CN106992570A - A kind of microbiological fuel cell energy harvesting and its self-powered circuit and method - Google Patents
A kind of microbiological fuel cell energy harvesting and its self-powered circuit and method Download PDFInfo
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- CN106992570A CN106992570A CN201710317906.XA CN201710317906A CN106992570A CN 106992570 A CN106992570 A CN 106992570A CN 201710317906 A CN201710317906 A CN 201710317906A CN 106992570 A CN106992570 A CN 106992570A
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- fuel cell
- microbiological fuel
- power point
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- 239000000446 fuel Substances 0.000 title claims abstract description 78
- 230000002906 microbiologic effect Effects 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000003306 harvesting Methods 0.000 title claims abstract description 18
- 238000004146 energy storage Methods 0.000 claims abstract description 24
- 230000005611 electricity Effects 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 7
- 230000006698 induction Effects 0.000 claims description 4
- 230000000813 microbial effect Effects 0.000 claims description 2
- 244000005700 microbiome Species 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fuel Cell (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention provides a kind of microbiological fuel cell energy harvesting and its self-powered circuit and method.It is deposit microbiological fuel cell using microorganism power supply, the battery biggest advantage of this kind of form is exactly non-maintaining, and endlessly electric energy is provided while environment is improved；Best power point tracking circuit is changed using digital signal processor according to microbiological fuel cell best power point, realizes that best power point is tracked by the reference voltage of serial bus control hysteresis comparator.Booster circuit is boosted using coupling inductance, and electric capacity, by controlling the booster circuit work logical time, makes circuit be operated under constant pressure and flow constant-resistance invariable power isotype as energy-storage travelling wave tube.The self-powered circuit is exactly that energy-storage travelling wave tube A can be electrically charged and be that best power point tracking circuit and booster circuit provide electric energy after initialization.
Description
Technical field
The present invention relates to microbiological fuel cell field, more particularly to a kind of microbiological fuel cell energy harvesting and its from
The circuit and method of power supply.
Background technology
Microbiological fuel cell is a kind of new fuel cell technology developed rapidly in recent years.Because it can be
Chemical energy in biomass can be converted into electric energy while degradation of contaminant, higher energy conversion efficiency can be obtained, be
Future alleviates the effective way of the energy and environmental problem, and the further investigation of researcher was caused in recent years.It is just only right
For " air-negative electrode " microbiological fuel cell prepared by laboratory, its maximum power density is in short several years from the past
Only 1mW m-26.9W m are developed into as leap-2.Traditional measure fuel battery power density method is to utilize a series of differences
The outer meeting resistance of value obtains its corresponding voltage value, or carries out Electrochemical Scanning using potentiostat.Within non-essential resistance is equal to
During portion's resistance, its maximum power density is just obtained.This measurement result represents the output potentiality of microbiological fuel cell, but not
Equal to the actual active power of battery, because the electric energy produced by battery changes into heat energy rather than by electronic product institute by outer meeting resistance
Utilize.In addition, the maximum power output of microbiological fuel cell is also with internal drag affecting parameters（Such as concentration of substrate, PH and temperature
Degree）Change and change.
For the electric energy effectively exported using microbiological fuel cell, most common method is passive using ultracapacitor
Collect the output electric energy of microbiological fuel cell in ground.This method can not maximize the output electric energy of microbiological fuel cell.Profit
Use maximum power point tracking technology（MPPT）Can when making the load resistance of microbiological fuel cell output end equal to its internal resistance of cell
To maximize the power output of microbiological fuel cell.Existing MPPT technique（Such as disturb and observation, gradient method）It is to pass through
Real-time optimization external load resistors value, makes microbiological fuel cell export electric energy and maximizes.Such method needs substantial amounts of control
Circuit.Traditional microbiological fuel cells applications circuit needs to configure external cell（Such as lithium battery, lead accumulator）For optimal work(
The circuits such as rate point tracking circuit, booster circuit are powered.Due to external cell restricted lifetime, answering for microbiological fuel cell is limited
With.
The content of the invention
In order to overcome the shortcomings of that prior art is present, the present invention provide a kind of microbiological fuel cell energy harvesting and its from
The circuit and method of power supply.
To achieve the above object, the present invention is realized using following technical scheme：A kind of microbiological fuel cell energy harvesting
And its self-powered circuit, it is characterised in that：Including microbiological fuel cell, self-powered circuit, best power point tracking circuit
And booster circuit；The microbiological fuel cell one output be connected with the booster circuit one input, it is another export and it is described most
Good power points tracking circuit first input connection；Booster circuit output respectively with load, best power point tracking circuit the
Two input connections；Best power point tracks circuit output and is connected with another input of the booster circuit；Self-powered circuit export with
Best power point tracking circuit the 3rd input connection.
In an embodiment of the present invention, the self-powered circuit includes initialization module and the first energy-storage travelling wave tube.
In an embodiment of the present invention, the booster circuit output and best power point tracking circuit second are set between inputting
It is equipped with a diode；The diode anode connects booster circuit output, and the diode cathode connects best power point tracking circuit
Second input.
In an embodiment of the present invention, it is provided with a voltage-regulator diode between the booster circuit output and load；Voltage stabilizing
Diode cathode is exported with booster circuit, plus earth.
In an embodiment of the present invention, the booster circuit output is also connected with the second energy-storage travelling wave tube.
In an embodiment of the present invention, the best power point tracking circuit includes hysteresis comparator, phase inverter and numeral
Signal processor；The microbiological fuel cell output is inputted with hysteresis comparator one respectively, digital signal processor input connects
Connect；Another input of hysteresis comparator is connected with digital signal processor output；Hysteresis comparator is exported to be connected with phase inverter input；
Phase inverter output is connected with booster circuit.
In an embodiment of the present invention, set between best power point tracking circuit output and another input of the booster circuit
It is equipped with a metal-oxide-semiconductor.
The present invention also provides a kind of microbiological fuel cell energy harvesting and its self-powered method, it is characterised in that bag
Include following steps：S1：The first energy-storage travelling wave tube electric capacity is charged by initialization module, makes it have the ability to drive best power point
Circuit work is tracked, best power point tracking circuit produces control signal to booster circuit；S2：In best power point tracking circuit
Digital signal processor gathers the real-time voltage U and current value I of microbiological fuel cell, calculate the performance number P at the moment=
U*I；S3：CalculateIf,Then；Otherwise；Wherein,For the voltage of last moment,,For the electric current of last moment；The sluggishness for tracking circuit for best power point compares
Device now reference voltage level,The hysteresis comparator last moment reference voltage level of circuit is tracked for best power point,For
Hysteresis comparator reference voltage level increment；S4：Controlling switch pipe gate signal, it is ensured that microbiological fuel cell output voltage is all the time
Work near best power point voltage.
In an embodiment of the present invention, S4 comprises the following steps：Booster circuit is divided into by conducting according to metal-oxide-semiconductor gate signal
State and cut-off state：The electricity that microbiological fuel cell is filled in energy, inductor to the inductor of booster circuit in the on-state
Stream increase, inductor fills energy by magnetic induction loop to the second energy-storage travelling wave tube, and now microbiological fuel cell voltage is because of output electric energy
And its voltage is reduced；In the off state, booster circuit is disconnected because of loop, and energy neither increases nor declined in inductor, the
Two energy-storage travelling wave tubes only have discharge process, and now microbiological fuel cell voltage rises.
Compared with prior art, the present invention is powered using microorganism power supply, is coordinated best power point tracking circuit, is realized micro-
The self-powered function of biological fuel cell application circuit；The circuit system is by initializing, after whole circuit normal work, only
By microbiological fuel cell output without by external cell just can for load and microbiological fuel cell application
Circuit provides electric energy.
Brief description of the drawings
The entire block diagram that Fig. 1 designs for the self-powered circuit of the present invention based on microbiological fuel cell.
Fig. 2 illustrates for self-powered flow in the self-powered circuit design of the present invention based on microbiological fuel cell
Figure.
Fig. 3 tracks for best power point in the self-powered circuit design of the present invention based on microbiological fuel cell
Circuit diagram.
Fig. 4 is digital signal processor work in the self-powered circuit design of the present invention based on microbiological fuel cell
Make schematic flow sheet.
Fig. 5 shows for boost circuit structure in the self-powered circuit design of the present invention based on microbiological fuel cell
It is intended to.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
The present invention provides a kind of microbiological fuel cell energy harvesting and its self-powered circuit, and it includes Microbial fuel
Battery, self-powered circuit, best power point tracking circuit and booster circuit；The output of microbiological fuel cell one and the liter
The input connection of volt circuit one, another output is connected with the best power point tracking input of circuit first；The booster circuit is defeated
Go out and be connected respectively with load, the tracking input of circuit second of best power point；Best power point tracks circuit output and the boosting
Another input connection of circuit；Self-powered circuit is exported to be connected with the best power point tracking input of circuit the 3rd.
Fig. 1 is the entire block diagram of the self-powered circuit system of the present invention based on microbiological fuel cell.
In an embodiment of the present invention, the self-powered circuit includes initialization module and the first energy-storage travelling wave tube.
Self-powered schematic flow sheet in self-powered circuit designs of the Fig. 2 based on microbiological fuel cell.Because in booster circuit
In addition to a small number of diodes, groundwork element is all energy-storage travelling wave tube, and loss power is low.Again because deposit microbiological fuel cell
It is that raw material sources are extensive using riverbed sludge or pollutant as organic matter.Unlike solar energy has the condition systems such as light application time, intensity
About, the condition that energy continues forever can substantially be reached.The self-powered circuit with initialization module that the present invention is designed does not include
Such as lithium battery, lead accumulator third party's energy storage equipment.When before integrated circuit start-up operation, initialization module is to energy storage member
Part electric capacity is charged.It is set to have the ability to drive the tracking circuit work of best power point, producing control signal makes booster circuit just
Often work.Energy-storage travelling wave tube electric capacity can power to load and best power point tracking circuit again through circuit storage output electric energy, be formed
Benign cycle, is finally reached self-powered purpose.
In an embodiment of the present invention, the booster circuit output and best power point tracking circuit second are set between inputting
It is equipped with a diode；The diode anode connects booster circuit output, and the diode cathode connects best power point tracking circuit
Second input.
In an embodiment of the present invention, it is provided with a voltage-regulator diode between the booster circuit output and load；Voltage stabilizing
Diode cathode is exported with booster circuit, plus earth.
In an embodiment of the present invention, the booster circuit output is also connected with the second energy-storage travelling wave tube.
In an embodiment of the present invention, the best power point tracking circuit includes hysteresis comparator, phase inverter and numeral
Signal processor；The microbiological fuel cell output is inputted with hysteresis comparator one respectively, digital signal processor input connects
Connect；Another input of hysteresis comparator is connected with digital signal processor output；Hysteresis comparator is exported to be connected with phase inverter input；
Phase inverter output is connected with booster circuit.
Fig. 3 is that best power point of the present invention tracks circuit diagram.After initialization, energy-storage travelling wave tube A electricity
Best power point can be driven to track circuit work.Digital signal processor collection microorganism in best power point tracking circuit
The real-time voltage and current value of fuel cell, calculate the performance number at the moment, then are compared with last moment performance number, press
Judge whether to increase according to the control flow shown in Fig. 4 or reduce hysteresis comparator reference voltage level UR, output different duty
The charge and discharge process time of inductance, makes the output voltage of microbiological fuel cell protect all the time in control signal, control booster circuit
Hold and be implemented around the purpose that microbiological fuel cell maximizes output in its best power point voltage.
In an embodiment of the present invention, set between best power point tracking circuit output and another input of the booster circuit
It is equipped with a metal-oxide-semiconductor.
Fig. 5 illustrates for boost circuit structure in the self-powered circuit design of the present invention based on microbiological fuel cell
Figure.Because needing to allow microbiological fuel cell output voltage to work all the time near best power point voltage, so the liter of the present invention
Volt circuit must operate under continuous mode.Booster circuit can be divided into according to metal-oxide-semiconductor gate signal by conducting state and cut-off shape
State.The electric current increase that microbiological fuel cell is filled in energy, inductor to inductance in the on-state.Inductor passes through magnetic induction loop
Energy is filled to as the electric capacity of energy-storage travelling wave tube.Now because of output electric energy, its voltage is reduced microbiological fuel cell voltage.In cut-off
Under state, booster circuit disconnects because of loop, and energy neither increases nor declined in inductor.Energy-storage travelling wave tube electric capacity, which only has, to discharge
Journey.Now microbiological fuel cell voltage rises.
The present invention also provides a kind of microbiological fuel cell energy harvesting and its self-powered method, and it includes following step
Suddenly：S1：The first energy-storage travelling wave tube electric capacity is charged by initialization module, makes it have the ability to drive best power point tracking circuit
Work, best power point tracking circuit produces control signal to booster circuit；S2：Data signal in best power point tracking circuit
Processor gathers the real-time voltage U and current value I of microbiological fuel cell, calculates the performance number P=U*I at the moment；S3：Meter
CalculateIf,Then；Otherwise；Wherein,To be upper
The voltage at one moment,,For the electric current of last moment；The hysteresis comparator of circuit is tracked for best power point now
Reference voltage level,The hysteresis comparator last moment reference voltage level of circuit is tracked for best power point,For sluggishness ratio
Compared with device reference voltage level increment；S4：Control booster circuit is operated in continuous mode, it is ensured that microbiological fuel cell output voltage begins
Work is arrived near best power point voltage eventually.
In an embodiment of the present invention, S4 comprises the following steps：Booster circuit is divided into by conducting according to metal-oxide-semiconductor gate signal
State and cut-off state：The electricity that microbiological fuel cell is filled in energy, inductor to the inductor of booster circuit in the on-state
Stream increase, inductor fills energy by magnetic induction loop to the second energy-storage travelling wave tube, and now microbiological fuel cell voltage is because of output electric energy
And its voltage is reduced；In the off state, booster circuit is disconnected because of loop, and energy neither increases nor declined in inductor, the
Two energy-storage travelling wave tube B only have discharge process, and now microbiological fuel cell voltage rises.
Above is presently preferred embodiments of the present invention, all changes made according to technical solution of the present invention, produced function is made
During with scope without departing from technical solution of the present invention, protection scope of the present invention is belonged to.
Claims (9)
1. a kind of microbiological fuel cell energy harvesting and its self-powered circuit, it is characterised in that：Including Microbial fuel electricity
Pond, self-powered circuit, best power point tracking circuit and booster circuit；The output of microbiological fuel cell one and the boosting
The input connection of circuit one, another output is connected with the best power point tracking input of circuit first；The booster circuit output
It is connected respectively with load, the tracking input of circuit second of best power point；Best power point tracks circuit output and the boosting electricity
Another input connection in road；Self-powered circuit is exported to be connected with the best power point tracking input of circuit the 3rd.
2. microbiological fuel cell energy harvesting according to claim 1 and its self-powered circuit, it is characterised in that：Institute
Stating self-powered circuit includes initialization module and the first energy-storage travelling wave tube.
3. microbiological fuel cell energy harvesting according to claim 1 and its self-powered circuit, it is characterised in that：Institute
State and be provided with a diode between booster circuit output and the tracking input of circuit second of best power point；The diode anode connects
Booster circuit is exported, and the diode cathode connects best power point tracking circuit second and inputted.
4. microbiological fuel cell energy harvesting according to claim 1 and its self-powered circuit, it is characterised in that：Institute
State and be provided with a voltage-regulator diode between booster circuit output and load；Voltage-regulator diode negative electrode is exported with booster circuit, anode
Ground connection.
5. microbiological fuel cell energy harvesting according to claim 1 and its self-powered circuit, it is characterised in that：Institute
Booster circuit output is stated also to be connected with the second energy-storage travelling wave tube.
6. microbiological fuel cell energy harvesting according to claim 1 and its self-powered circuit, it is characterised in that：Institute
Stating best power point tracking circuit includes hysteresis comparator, phase inverter and digital signal processor；The microbiological fuel cell
Output is inputted with hysteresis comparator one respectively, digital signal processor input is connected；Another input of hysteresis comparator and numeral letter
The output connection of number processor；Hysteresis comparator is exported to be connected with phase inverter input；Phase inverter output is connected with booster circuit.
7. microbiological fuel cell energy harvesting according to claim 1 and its self-powered circuit, it is characterised in that：Most
A metal-oxide-semiconductor is provided between good power points tracking circuit output and another input of the booster circuit.
8. a kind of microbiological fuel cell energy harvesting and its self-powered method, it is characterised in that comprise the following steps：
S1：The first energy-storage travelling wave tube electric capacity is charged by initialization module, makes it have the ability to drive best power point tracking electricity
Road works, and best power point tracking circuit produces control signal to booster circuit；
S2：Digital signal processor gathers the real-time voltage U and electric current of microbiological fuel cell in best power point tracking circuit
Value I, calculates the performance number P=U*I at the moment；
S3：CalculateIf,Then；Otherwise；Wherein,For the voltage of last moment,,For the electric current of last moment；Circuit is tracked for best power point
Hysteresis comparator now reference voltage level,The hysteresis comparator last moment of circuit is tracked with reference to electricity for best power point
Pressure value,For hysteresis comparator reference voltage level increment；
S4：Control booster circuit is operated in continuous mode, it is ensured that microbiological fuel cell output voltage works to optimal work(all the time
Near rate point voltage.
9. microbiological fuel cell energy harvesting according to claim 8 and its self-powered method, it is characterised in that：S4
Comprise the following steps：Booster circuit is divided into by conducting state and cut-off state according to metal-oxide-semiconductor gate signal：It is micro- in the on-state
Biological fuel cell to the inductor of booster circuit fill can, the electric current increase in inductor, inductor is by magnetic induction loop to the
Two energy-storage travelling wave tubes fill energy, and now because of output electric energy, its voltage is reduced microbiological fuel cell voltage；In the off state, boost
Circuit because loop disconnects, and energy neither increases nor declined in inductor, and the second energy-storage travelling wave tube only has discharge process, now micro- life
Thing fuel battery voltage rises.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710317906.XA CN106992570B (en) | 2017-05-08 | 2017-05-08 | Microbial fuel cell energy acquisition and self-powered circuit and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710317906.XA CN106992570B (en) | 2017-05-08 | 2017-05-08 | Microbial fuel cell energy acquisition and self-powered circuit and method |
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| CN106992570A true CN106992570A (en) | 2017-07-28 |
| CN106992570B CN106992570B (en) | 2023-04-07 |
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| CN107733056A (en) * | 2017-10-12 | 2018-02-23 | 中科宇图（北京）资源环境科学研究有限公司 | Microbiological fuel cell electric power system applied to AA/O sewage treatment process |
| CN107831201A (en) * | 2017-09-30 | 2018-03-23 | 中国农业大学 | One kind can self-powered water quality monitoring prior-warning device and method |
| CN113109532A (en) * | 2021-04-14 | 2021-07-13 | 齐鲁工业大学 | Water quality monitoring device based on microbial fuel cell |
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| Publication number | Publication date |
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| CN106992570B (en) | 2023-04-07 |
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