CN113346104A - Metal fuel cell low-temperature heating structure - Google Patents
Metal fuel cell low-temperature heating structure Download PDFInfo
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- CN113346104A CN113346104A CN202110768563.5A CN202110768563A CN113346104A CN 113346104 A CN113346104 A CN 113346104A CN 202110768563 A CN202110768563 A CN 202110768563A CN 113346104 A CN113346104 A CN 113346104A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 98
- 239000000446 fuel Substances 0.000 title claims abstract description 83
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 54
- 239000002184 metal Substances 0.000 title claims abstract description 54
- 239000003792 electrolyte Substances 0.000 claims abstract description 103
- 230000011664 signaling Effects 0.000 claims abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 40
- 229910052760 oxygen Inorganic materials 0.000 claims description 40
- 239000001301 oxygen Substances 0.000 claims description 40
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000011160 research Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 3
- -1 aluminum ions Chemical class 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
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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
- H01M8/04223—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
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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
- H01M8/04223—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
- H01M8/04268—Heating of fuel cells during the start-up of the fuel cells
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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
- H01M8/04276—Arrangements for managing the electrolyte stream, e.g. heat exchange
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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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
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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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- 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 provides a low-temperature heating structure of a metal fuel cell, which comprises a fuel cell reactor 1, an electrolyte tank 2, an electrolyte circulation input pipeline 3, an electrolyte circulation output pipeline 4, a first temperature sensor 5, a controller 6, a heating assembly 7, an electric push rod assembly 8 and a cell stack fixing support 9, wherein the electrolyte circulation input pipeline 3 is connected with the electrolyte circulation output pipeline 4; one or more grooves are arranged at the top of the electrolyte tank 2; the electric push rod assembly 8 is fixed at the bottom of the fuel cell reactor 1, the tail end of the electric push rod assembly 8 is connected with the heating assembly 7, the electric push rod assembly 8 is positioned above the one or more grooves, and the electric push rod assembly 8 can go in and out of the one or more grooves; the first temperature sensor 5 is fixed outside the electrolyte tank 2 and used for acquiring a first temperature signal of the electrolyte tank 2; the controller 6 is fixed outside the electrolyte tank 2 and is used for receiving the first temperature signal and controlling the electric push rod assembly 8 to ascend or descend according to the first temperature signal.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a low-temperature heating structure of a metal fuel battery.
Background
The research direction of the battery energy storage technology at the present stage mainly focuses on reducing the mass of an energy storage system so as to achieve the purpose of improving the energy density of a power supply system, and the metal fuel battery becomes an important research direction in the field of new energy due to the characteristics of light mass, high energy storage density and the like. The metal aluminum has sufficient content in the earth crust, the electrode aluminum plate has the characteristics of lower material processing difficulty and processing cost and high specific energy, so that the fuel cell applying the metal aluminum, also called an aluminum-air cell, has high research value. The anode of the battery adopts an aluminum plate treated by a special process, the cathode is a porous air electrode, and the electrolyte is a strong alkaline solution or a salt solution, such as a more common potassium hydroxide solution. The discharge reaction is described simply as follows: the anode is oxidized, metal aluminum ions are combined with hydroxide ions, and electrons are lost while aluminum hydroxide is generated; the cathode generates oxygen reduction reaction, oxygen in the air, water in the electrolyte and the obtained electrons are combined to generate hydroxyl ions, so that the transfer of the electrons is completed, and the purpose of providing electric energy is realized.
From the above analysis, it can be known that the electrolyte is a tie connecting the air positive electrode and the aluminum negative electrode for transferring cations and anions generated in the electrochemical reaction, and is also a storage for storing aluminum hydroxide generated during the discharge of the battery. Therefore, the quality of the electrolyte directly determines the quality of the battery. Under low temperature environment, the performance of the battery is mainly limited by several aspects, such as the influence of the conductivity of the electrode material, the influence of the ion diffusion coefficient and the influence of the conductivity of the electrolyte. In particular, the reduction of the conductivity of the electrolyte in a low-temperature environment has a great influence on the performance of the aluminum metal battery. In addition, since the flow properties of air are also affected under low temperature conditions, the amount of oxygen supplied during the oxygen reduction reaction at the cathode is insufficient, and the discharge effect of the battery is also reduced.
Currently, many researches on organic additives of electrolytes in metal fuel cells are carried out, and many results are obtained. However, the research on the low-temperature performance of the battery, which is an indispensable technical index of the battery, has been less advanced.
In order to solve the problem that in the prior art, the metal fuel cell has poor discharging effect in a low-temperature severe environment, no effective solution is provided.
Disclosure of Invention
In view of this, embodiments of the present invention provide a low-temperature heating structure for a metal fuel cell, so as to solve the problem in the prior art that the metal fuel cell has a poor discharging effect in a low-temperature severe environment.
The invention provides a low-temperature heating structure of a metal fuel cell, which comprises: the device comprises a fuel cell reactor 1, an electrolyte tank 2, an electrolyte circulation input pipeline 3, an electrolyte circulation output pipeline 4, a first temperature sensor 5, a controller 6, a heating assembly 7, an electric push rod assembly 8 and a reactor fixing support 9;
the fuel cell reactor 1 is fixed above the electrolyte tank 2 by the reactor fixing bracket 9;
the electrolyte tank 2 is communicated with the interior of the fuel cell reactor 1 through the electrolyte circulation input pipeline 3 and the electrolyte circulation output pipeline 4;
one or more grooves are formed in the top of the electrolyte tank 2;
the electric push rod assembly 8 is fixed at the bottom of the fuel cell reactor 1, the tail end of the electric push rod assembly 8 is connected with the heating assembly 7, the electric push rod assembly 8 is positioned above the one or more grooves, and the electric push rod assembly 8 can go in and out of the one or more grooves;
the first temperature sensor 5 is fixed outside the electrolyte tank 2 and used for acquiring a first temperature signal of the electrolyte tank 2;
the controller 6 is fixed outside the electrolyte tank 2 and is used for receiving the first temperature signal and controlling the electric push rod assembly 8 to ascend or descend according to the first temperature signal.
Optionally, when the first temperature signal is lower than a first set threshold, the controller 6 controls the electric push rod assembly 8 to descend, so that the heating assembly 7 descends to the corresponding groove, and controls the heating assembly 7 to start heating.
Optionally, the controller 6 is further configured to obtain a heating time of the heating assembly 7, and when the heating time is greater than a second set threshold, control the electric push rod assembly 8 to move upward, pull the heating assembly 7 out of the one or more grooves, and stop heating the electrolyte tank 2.
Optionally, a second temperature sensor 10 is further included, and the second temperature sensor 10 is fixed outside the fuel cell reactor 1 and is used for detecting a second temperature signal of the electrolyte in the fuel cell reactor 1;
and the controller 6 is used for controlling the starting of the heat dissipation device when the second temperature signal is greater than a third set threshold value.
Optionally, the external structure of the heating assembly 7 is a porous sealed shell, and when the heating assembly 7 is in operation, heat is transferred from the porous structure to the electrolyte tank 2.
Optionally, the bottom of the electric push rod assembly 8 is connected with the top of the porous packaging shell of the heating assembly 7 through a suspension device.
Optionally, an oxygen candle is disposed inside the heating assembly 7, and the oxygen candle inside the heating assembly 7 releases oxygen while heating.
Optionally, the fuel cell system further comprises an oxygen concentration sensor 11, wherein the oxygen concentration sensor 11 is fixed outside the fuel cell reactor 1 and is configured to collect an oxygen concentration signal and input the oxygen concentration signal to the controller 6, and the controller 6 is configured to control the ventilation device to exhaust oxygen when the oxygen concentration signal is greater than a fourth set threshold.
Optionally, the electric push rod assembly 8 is composed of a motor and a linear push rod, the rotation direction of the motor is controlled by the controller 6, and the rotation direction of the motor controls the movement direction of the linear push rod.
Optionally, the metal fuel cell low-temperature heating structure further includes a circulation pump 12, an electrolyte circulation system is formed by the electrolyte circulation input pipeline 3, the electrolyte circulation output pipeline 4 and the circulation pump 12, and the controller 6 controls the circulation pump 12 to complete circulation of the electrolyte in the metal fuel cell.
The low-temperature heating structure of the metal fuel cell provided in the embodiment of the application comprises a fuel cell reactor 1, an electrolyte tank 2, an electrolyte circulation input pipeline 3, an electrolyte circulation output pipeline 4, a first temperature sensor 5, a controller 6, a heating assembly 7, an electric push rod assembly 8 and a stack fixing support 9; the fuel cell reactor 1 is fixed above the electrolyte tank 2 by a reactor fixing bracket 9; the electrolyte tank 2 is communicated with the interior of the fuel cell reactor 1 through an electrolyte circulation input pipeline 3 and an electrolyte circulation output pipeline 4; one or more grooves are formed in the top of the electrolyte tank 2; the electric push rod assembly 8 is fixed at the bottom of the fuel cell reactor 1, the tail end of the electric push rod assembly 8 is connected with the heating assembly 7, the electric push rod assembly 8 is positioned above one or more grooves, and the electric push rod assembly 8 can go in and out of the one or more grooves; the first temperature sensor 5 is fixed outside the electrolyte tank 2 and used for acquiring a first temperature signal of the electrolyte tank 2; the controller 6 is fixed outside the electrolyte tank 2 and used for receiving a first temperature signal and controlling the electric push rod assembly 8 to ascend or descend according to the first temperature signal. The problem of among the prior art, metal fuel cell discharges the effect poor under microthermal adverse circumstances is solved, can realize heating electrolyte rapidly in low temperature environment, has improved the electric conductivity of electrolyte, has shortened the time of battery full load work.
Drawings
Further details, features and advantages of the disclosure are disclosed in the following description of exemplary embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural view showing a low-temperature heating structure of a metal fuel cell according to an exemplary embodiment of the present invention;
fig. 2 shows another schematic structural view of a metal fuel cell low-temperature heating structure according to an exemplary alternative of the present invention.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is to be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.
It should be understood that the various steps recited in the method embodiments of the present disclosure may be performed in a different order, and/or performed in parallel. Moreover, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the present disclosure is not limited in this respect.
The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to". The term "based on" is "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions for other terms will be given in the following description. It should be noted that the terms "first", "second", and the like in the present disclosure are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence relationship of the functions performed by the devices, modules or units. It is noted that references to "a", "an", and "the" modifications in this disclosure are intended to be illustrative rather than limiting, and that those skilled in the art will recognize that "one or more" may be used unless the context clearly dictates otherwise. The names of messages or information exchanged between devices in the embodiments of the present disclosure are for illustrative purposes only, and are not intended to limit the scope of the messages or information.
The invention provides a metal fuel cell low-temperature heating structure, fig. 1 shows a schematic structural diagram of the metal fuel cell low-temperature heating structure according to an exemplary embodiment of the invention, and as shown in fig. 1, the metal fuel cell low-temperature heating structure comprises: the device comprises a fuel cell reactor 1, an electrolyte tank 2, an electrolyte circulation input pipeline 3, an electrolyte circulation output pipeline 4, a first temperature sensor 5, a controller 6, a heating assembly 7, an electric push rod assembly 8 and a reactor fixing support 9. The fuel cell reactor 1 is fixed above the electrolyte tank 2 by a stack fixing bracket 9, for example, the stack fixing bracket 9 is installed on the electrolyte tank 2 by bolt connection, and the upper part of the stack fixing bracket 9 is connected with the fuel cell reactor 1. The electrolyte tank 2 is communicated with the interior of the fuel cell reactor 1 through an electrolyte circulation input pipeline 3 and an electrolyte circulation output pipeline 4. The top of the electrolyte tank 2 is provided with one or more grooves, for example, the shape of the grooves matches the shape of the heating elements 7, and the number of the grooves is the same as the number of the heating elements 7, for example, the number of the grooves can be 1, 2 or 3, so that the heating elements 7 can be completely placed in the grooves on the top of the electrolyte tank 2. The electric push rod assembly 8 is fixed at the bottom of the fuel cell reactor 1, for example, the upper end of the electric push rod assembly 8 is connected with a hanging ring at the lower part of the fuel cell reactor 1 through a fixing device. The end of the electric push rod assembly 8 is connected with the heating assembly 7, for example, the end of the electric push rod assembly 8 is connected with the top of the heating assembly 7 through a connecting device fixed at the end of the electric push rod assembly 8. The power putter assembly 8 is vertically positioned above one or more recesses into and out of which the power putter assembly 8 may be inserted and removed. The first temperature sensor 5 is fixed outside the electrolyte tank 2, for example, near the interface between the electrolyte tank 2 and the electrolyte circulation input line 3. The controller 6 is arranged outside the electrolyte tank 2, and the controller 6 is a control core of the fuel cell and is used for receiving the first temperature signal and controlling the electric push rod assembly 8 to ascend or descend according to the first temperature signal. For example, a single chip microcomputer microprocessor is used as a control system, receives a first temperature signal sent by the first temperature sensor 5, judges whether the first temperature signal is greater than or less than a first set threshold value, and controls the electric push rod assembly 8 to ascend or descend.
Through the above-mentioned embodiment, 8 downstream of electric putter subassembly are controlled through controller 6, put into the corresponding recess at 2 tops of electrolyte case with heating element 7, heating element 7 carries out the process of heating to electrolyte case 2, the conductivity of electrolyte in the electrolyte case 2 has been improved, thereby the problem that metal fuel cell inefficiency under low temperature environment has been solved, the quick electrolyte temperature that improves at low temperature has been reached, strengthen the chemical reaction effect at low temperature, metal fuel cell generating efficiency is improved, the effect of extension metal fuel cell's environment suitability.
When the ambient temperature is low and heating is needed, in some optional embodiments, the controller 6 receives a signal sent by the first temperature sensor 5, and when the first temperature signal is lower than a first set threshold, the first set threshold can be flexibly selected according to the actual situation. After processing, two paths of forward signals are output, the electric push rod assembly 8 is controlled to descend in the first path, for example, a motor is started, the push rod is pushed to move downwards, the heating assembly 7 is completely arranged in a groove corresponding to the top of the electrolyte tank 2, the limit switch signal triggers at the moment, the motor stops rotating, and the electric push rod assembly 8 and the heating assembly 7 stop moving downwards. The second forward signal controls the heating element 7 to power up and start heating. The temperature rise speed of the electrolyte in the electrolyte tank 2 is further accelerated, and the starting speed and the discharge efficiency of the metal fuel cell at low temperature are improved.
When the heating assembly 7 is heated for a limited time to meet the requirement of the discharge efficiency of the metal fuel cell, in some optional embodiments, the controller 6 is further configured to obtain the heating time of the heating assembly 7, and as can be seen from multiple heating experiments, heat generated by a heating process such as oxygen candle burning is mainly released within the first thirty minutes, and particularly within the first ten minutes, the heat can reach a peak value, and the electrolyte temperature can be raised by 20 ℃. Meanwhile, the chemical reaction inside the metal fuel cell can release heat to heat the electrolyte, so that the heating time is longer than a second set threshold value, the second set threshold value can be flexibly selected according to the actual condition, for example, 30 minutes, the controller enables the motor to rotate reversely, controls the electric push rod assembly 8 to move upwards, pulls the heating assembly 7 out of the one or more grooves, and stops heating the electrolyte tank 2. The energy waste in the working process of the metal fuel cell can be reduced, and the stability and the safety in the working process of the low-temperature heating structure of the metal fuel cell are improved.
When the temperature of the fuel cell reactor 1 is too high, in some alternative embodiments, as shown in fig. 2, a second temperature sensor 10 is also included. The second temperature sensor 10 is fixed outside the fuel cell reactor 1 and configured to detect a second temperature signal of the electrolyte in the fuel cell reactor 1, and the controller 6 is configured to control to start a heat dissipation device, such as a fan, to reduce the operating temperature when the second temperature signal is greater than a third set threshold, so as to avoid a danger occurring during the operation of the metal fuel cell.
When the temperature is required to be rapidly increased in a short time to improve the heating efficiency, in some alternative embodiments, the external structure of the heating assembly 7 is a porous packaging shell, and when the heating assembly 7 works, the generated heat is transferred to the electrolyte tank 2 from the porous structure, for example, the porous packaging shell of the heating assembly 7 is barrel-shaped, and the heat generated in the working process heats the electrolyte tank 2 through the porous structure on the side surface of the barrel. The porous packaging shell can enable heat generated inside the heating assembly 7 to be transferred into the electrolyte more quickly, reduce energy loss in the heating process and improve the starting speed of the metal fuel cell at low temperature.
In some alternative embodiments, the bottom of the electric putter assembly 8 is connected to the top of the porous enclosing housing of the heating assembly 7 by a suspension means. For example, the bottom of the electric push rod assembly 8 is connected with the top of the heating assembly 7 through a metal bracket, and the shell of the heating assembly 7 is fixed at the same time, so that the shell is prevented from shaking in the movement process, and the stability and the safety of the metal fuel cell low-temperature heating structure in work are further improved.
When the oxygen concentration in the metal fuel cell working environment is low and an additional oxygen-assisting work is required, in some optional embodiments, oxygen candles are arranged inside the heating assembly 7, for example, the oxygen candles are uniformly distributed inside the porous packaging shell, and the oxygen candles in the heating assembly 7 release oxygen while heating. When the controller 6 judges that the first temperature signal detected by the first temperature sensor 5 is greater than the first threshold value, the electric push rod assembly 8 does not work, only the oxygen candle in the heating assembly 7 is started to realize oxygen assistance, and oxygen generated by the oxygen candle is used for being provided for the air electrode to perform oxygen reduction reaction. The metal fuel cell can work under the severe conditions of low temperature and oxygen deficiency, the environmental adaptability of the metal fuel cell is further improved, and the application environment range of the metal fuel cell is wider.
When the oxygen concentration in the metal fuel cell working environment is too high and needs to be reduced, in some alternative embodiments, as shown in fig. 2, the oxygen concentration sensor 11 is further included, the oxygen concentration sensor 11 is fixed outside the fuel cell reactor 1, for example, at an inlet of the electrolyte circulation input pipeline 3 on the fuel cell reactor 1, and is configured to collect an oxygen concentration signal and input the oxygen concentration signal to the controller 6, and the controller 6 is configured to control a ventilation device, for example, a fan, to exhaust oxygen when the oxygen concentration signal is greater than a fourth set threshold, so as to ensure safety and stability during the operation of the cell.
When the metal fuel cell has higher requirements on environmental conditions, in some optional embodiments, the electric push rod assembly 8 consists of a motor and a linear push rod, the rotation direction of the motor is controlled by the controller 6, and the rotation direction of the motor controls the movement direction of the linear push rod.
In some optional embodiments, the metal fuel cell low-temperature heating structure further includes a circulation pump 12, an electrolyte circulation system is formed by the electrolyte circulation input pipeline 3, the electrolyte circulation output pipeline 4 and the circulation pump 12, and the controller 6 controls the circulation pump 12 to complete circulation of the electrolyte in the metal fuel cell. For example, when the battery is started, the circulating pump 12 starts to work, the electrolyte is conveyed to different galvanic pile monomers through the electrolyte circulation input pipeline 3 to perform discharge reaction, the metal aluminum anode is oxidized to generate aluminum hydroxide, and the alkali liquor in the galvanic pile monomers also enters the electrolyte tank 2 again through the electrolyte circulation output pipeline 4 to complete circulation. During operation of the battery, chemical energy is converted to electrical energy and provided to an external circuit.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. A metal fuel cell low temperature heating structure, comprising: the device comprises a fuel cell reactor (1), an electrolyte tank (2), an electrolyte circulation input pipeline (3), an electrolyte circulation output pipeline (4), a first temperature sensor (5), a controller (6), a heating assembly (7), an electric push rod assembly (8) and a reactor fixing support (9);
the fuel cell reactor (1) is fixed above the electrolyte tank (2) by the reactor fixing support (9);
the electrolyte tank (2) is communicated with the interior of the fuel cell reactor (1) through the electrolyte circulation input pipeline (3) and the electrolyte circulation output pipeline (4);
one or more grooves are formed in the top of the electrolyte tank (2);
the electric push rod assembly (8) is fixed at the bottom of the fuel cell reactor (1), the tail end of the electric push rod assembly (8) is connected with the heating assembly (7), the electric push rod assembly (8) is positioned above the one or more grooves, and the electric push rod assembly (8) can go in and out of the one or more grooves;
the first temperature sensor (5) is fixed outside the electrolyte tank (2) and is used for acquiring a first temperature signal of the electrolyte tank (2);
the controller (6) is fixed outside the electrolyte tank (2) and used for receiving the first temperature signal and controlling the electric push rod assembly (8) to ascend or descend according to the first temperature signal.
2. The metal fuel cell low-temperature heating structure according to claim 1, wherein when the first temperature signal is lower than a first set threshold, the controller (6) controls the electric push rod assembly (8) to descend, so that the heating assembly (7) descends to the corresponding groove, and controls the heating assembly (7) to start heating.
3. The metal fuel cell low-temperature heating structure according to claim 1, wherein the controller (6) is further configured to obtain a heating time of the heating assembly (7), and when the heating time is greater than a second set threshold, the controller controls the electric push rod assembly (8) to move upwards to pull the heating assembly (7) out of the one or more grooves, and stops heating the electrolyte tank (2).
4. The metal fuel cell low-temperature heating structure according to claim 1, further comprising a second temperature sensor (10), the second temperature sensor (10) being fixed outside the fuel cell reactor (1) for detecting a second temperature signal of an electrolyte in the fuel cell reactor (1);
and the controller (6) is used for controlling the starting of the heat dissipation device when the second temperature signal is greater than a third set threshold value.
5. The metal fuel cell low temperature heating structure according to claim 1, wherein the external structure of the heating assembly (7) is a porous encapsulated shell, and when the heating assembly (7) is operated, heat is transferred from the porous structure to the electrolyte tank (2).
6. The metal fuel cell low temperature heating structure according to claim 1, wherein the bottom of the electric push rod assembly (8) is connected with the top of the porous packaging shell of the heating assembly (7) through a suspension device.
7. The metal fuel cell low temperature heating structure according to claim 1, wherein an oxygen candle is provided inside the heating assembly (7), and the oxygen candle inside the heating assembly (7) releases oxygen while heating.
8. The metal fuel cell low-temperature heating structure according to claim 1 or 7, further comprising an oxygen concentration sensor (11), wherein the oxygen concentration sensor (11) is fixed outside the fuel cell reactor (1) and used for collecting an oxygen concentration signal and inputting the oxygen concentration signal to the controller (6), and the controller (6) is used for controlling a ventilation device to exhaust oxygen when the oxygen concentration signal is greater than a fourth set threshold value.
9. The metal fuel cell low-temperature heating structure according to claim 1, wherein the electric push rod assembly (8) is composed of a motor and a linear push rod, the rotation direction of the motor is controlled by the controller (6), and the rotation direction of the motor controls the movement direction of the linear push rod.
10. The metal fuel cell low-temperature heating structure according to any one of claims 1 to 7, further comprising a circulation pump (12), wherein an electrolyte circulation system is formed by the electrolyte circulation input pipeline (3), the electrolyte circulation output pipeline (4) and the circulation pump (12), and the circulation pump (12) is controlled by the controller (6) to complete circulation of the electrolyte in the metal fuel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110768563.5A CN113346104A (en) | 2021-07-07 | 2021-07-07 | Metal fuel cell low-temperature heating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110768563.5A CN113346104A (en) | 2021-07-07 | 2021-07-07 | Metal fuel cell low-temperature heating structure |
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| CN114335820A (en) * | 2021-12-16 | 2022-04-12 | 中国人民解放***箭军工程大学 | Aluminum-air power supply electrolyte temperature-changing operation system and method |
| CN116706347A (en) * | 2023-08-02 | 2023-09-05 | 德阳市东新机电有限责任公司 | Aluminum fuel cell for rapidly heating reactor electrolyte and rapid heating method |
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