CN100423405C - Fuel battery power output control method and application thereof - Google Patents
Fuel battery power output control method and application thereof Download PDFInfo
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- CN100423405C CN100423405C CNB2005101034542A CN200510103454A CN100423405C CN 100423405 C CN100423405 C CN 100423405C CN B2005101034542 A CNB2005101034542 A CN B2005101034542A CN 200510103454 A CN200510103454 A CN 200510103454A CN 100423405 C CN100423405 C CN 100423405C
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- fuel cell
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- power
- voltage changer
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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
Abstract
This invention discloses a power production control method of a fuel cell and its application, which provides a DC voltage converter and fuel cells and connects the input of the DC voltage converter with the output of the cell, in which, the DC voltage converter utilizes the output current of the fuel cell to convert the output to an output fixed voltage and maintain the input of which in a fixed current sphere, namely, to maintain the output current of the fuel cell in a preset sphere of a fixed current, in which, the current preset sphere of a fixed current is designed based on the set number of the membrane electrode of the cell and the current sphere of the optimum power region generated by the membrane electrode. This invention also can be used in fuel cell matched with other power energy output devices to provide multi-energy.
Description
Technical field
The present invention relates to a kind of fuel battery power output control method and application thereof, relate in particular to and see through the current value that dc voltage changer is controlled the input of dc voltage changer, making it keep one decides within the current range, thus, allow fuel cell operate being lower than or being under maximum power output or the optimum efficiency output state, and can cooperate other electric power energy output device to carry out supply of electric power with power save mode.
Background technology
Existing dc voltage changer (DC Converter) for example is used for the existing dc voltage changer of secondary cell, when design, need only consider the stability Design that voltage is decided in output usually, its output current can be according to load variations, and the voltage of not worrying the electric power that secondary cell produces is for the influence of existing dc voltage changer, and because but secondary cell is to belong to after a kind of charging the just energy container of storage power, make in use because of the discharge released energy, if and when secondary cell discharges the electric weight abundance, then the output current of secondary cell can maintain certain electric current, so secondary cell can be considered the certain voltage assembly under electric power is enough.Yet, fuel cell is to belong to a kind of energy converter, its energy pre-storage of not going ahead of the rest, like this, if the fuel cell collocation is used when having dc voltage changer now, owing to fuel cell its current value of the electric power that produces can be because extraneous load have very big variation, like this, at this moment, existing dc voltage changer is still the input current that utilizes after fuel cell changes and changes, though existing dc voltage changer still can provide load required power, the result who is caused is that to allow fuel cell may not be certain be to operate under the best power output state.
Moreover, common in the electronic system of using fuel cell, can arrange in pairs or groups other electric power energy output device, for example secondary cell of rechargeable type lithium battery.Especially in portable electronic system, because can't know the electric power that when can replenish secondary cell, and the life-span of secondary cell can shorten because of frequent discharging and recharging, but the fuel of fuel cell can be filled at any time, so must reduce the electric power output of secondary cell as far as possible, and electric power output is supplied based on fuel cell, and then reaches the energy-conservation purpose of secondary cell.
The present inventor is because existing dc voltage changer can't provide the operator scheme of best power output state running to fuel cell, be urgently to think invention and improve a kind of fuel battery power output control method, make that fuel cell is running always under the best power output state, and this control method is applied in multipotency source supplying system in conjunction with fuel cell and other electric power energy output device.
Summary of the invention
Main purpose of the present invention is to provide a kind of fuel battery power output control method and application thereof, allow dc voltage changer except the function that output current can maintain certain electric current is provided, allow the fuel cell be running always under the best power output state simultaneously.
In order to reach above-mentioned purpose of the present invention, the invention provides a kind of fuel battery power output control method and application thereof, comprise the following steps: to provide dc voltage changer (DC Converter) and at least one fuel cell and at least one second battery, and the input of dc voltage changer is connected with the output of fuel cell; Dc voltage changer utilizes the output power of fuel cell, and conversion is output as output and decides voltage; And, dc voltage changer makes the input of dc voltage changer maintain one to decide within the electric current preset range, even also the output current of fuel cell maintains one and decides within the electric current preset range,, be less than or equal to current value I and keep this fuel cell institute output current value
Max, and the electric power exported of this fuel cell is enough to supply load and takes, and makes this dc voltage changer select to stop the state that second battery provides electric power; Keep this fuel cell institute output current value in addition and be less than or equal to current value I
Max, and the power shortage exported of this fuel cell taken to supply with load, makes the state of this dc voltage changer selection with second battery and fuel cell parallel operation; Wherein, decide the electric current preset range and be mea quantity and the current range below the mea institute output best power district, set this and decide its current range value of electric current preset range according to fuel cell.Wherein, this best power district is that the selection mea can produce the arbitrary state in output of maximum power power and the output of mea maximum power under fuel specific.
Moreover the present invention also can be applicable to fuel cell and cooperates other electric power energy output device and the output of multipotency source is provided.
For making those of ordinary skill in the art understand purpose of the present invention, feature and effect, now by following specific embodiment, and cooperate appended graphic, to the present invention illustrate in detail as after.
Description of drawings
Fig. 1 is fuel battery power output control method of the present invention and the circuit connection diagram that is applied to a load thereof.
Fig. 2 is the electric current-power characteristic figure of the single mea of the employed fuel cell of fuel battery power output control method of the present invention.
Fig. 3 is the flow chart of fuel battery power output control method of the present invention and application thereof.
The explanation of figure number numbering
The second battery output 21
Dc voltage changer input 31
Dc voltage changer output 32
Load 4
101,103,105 steps
Embodiment
Fig. 1 is fuel battery power output control method of the present invention and the circuit connection diagram that is applied to a load thereof.Please refer to shown in Figure 1, at least one fuel cell 1 of the present invention and at least one second battery 2 are electrically connected to a direct current electric pressure converter 3 (DC Converter) respectively, in order to carry out the voltage transitions of this fuel cell 1 and 2 output powers of second battery, utilize this dc voltage changer 3 to be electrically connected to a load 4 again, use in order to the electric power behind these dc voltage changer 3 changing voltages is supplied with this load 4.Wherein, this fuel cell 1 is to carry out a kind of energy converter that electrochemical reaction produces electric power by hydrogen-rich fuel (as methanol fuel), oxygen fuel and catalytic substance, this fuel cell 1 has fuel cell output 11, in order to export the electric power that this fuel cell 1 is produced; This second battery 2 is another power generating device, it can be the primary cell or the secondary cell that the chemical energy that stores can be converted to electric energy, and has second a battery output 21, in order to export the electric power that this second battery 1 is produced, for instance, this second battery 2 can be the primary cell of alkaline battery or the secondary cell of lithium battery; This dc voltage changer 3 has respectively should fuel cell 1 and several dc voltage changer inputs 31 of second battery 2 and the dc voltage changer output 32 with corresponding load 4, and this dc voltage changer 3 can see through the running of step-down logic (buck logic) or boost logic (boost logic), cooperate the required voltage of load 4, and the power conversions that this fuel cell 1 or second battery 2 are exported is formed corresponding voltage swing; And this load 4 can be an electronic building brick or electronic system, and the electric power by this dc voltage changer 3 burning voltage of exporting, and can carry out the running of this load 4.
The fuel cell output 11 electric property of above-mentioned fuel cell 1 are connected in the direct current electric pressure converter input 31 in this dc voltage changer 3, and the second battery output, the 21 electric property of this second battery 2 are connected in another dc voltage changer input 31 in this dc voltage changer 3, the electric power transfer that fuel cell 1 and second battery 2 are produced is to this dc voltage changer 3 thus, and the dc voltage changer output 32 electric property that see through in this dc voltage changer 3 are connected in this load 4, thus electric power transfer to this load 4 of specific voltage are used.
Above-mentioned fuel cell 1 is the fuel cell that utilizes the manufacturing of printed circuit board (PCB) processing procedure.
Fig. 2 is the electric current-power characteristic figure of the single mea of the employed fuel cell of fuel battery power output control method of the present invention; And Fig. 3 is the flow chart of fuel battery power output control method of the present invention and application thereof.Please refer to shown in Figure 1, according to the dc voltage changer 3 that control method of the present invention provided, it is decided voltage and offers the function of load 4 except possessing output, the current value of dc voltage changer input 31 can also be maintained always one decides within the current range, and under the running of load 4, promptly can produce this corresponding current value via step-down logic (buck logic) or boost logic (boost logic) with specific power and operating voltage.Moreover this dc voltage changer 3 has the maximum current output valve of the fuel cell 1 of restriction running.Please further with reference to shown in Figure 2, corresponding power output valve of current output value meeting of each mea in this fuel cell 1, wherein when each mea in the fuel cell 1 produces output current value Imax, can correspondingly produce peak power output Pmax, and the maximum current output valve of this dc voltage changer 3 fuel cell 1 running promptly maintains the current value I max that is less than or equal to maximum power output, and this fuel cell 1 of promptly representing this moment is to operate under the state that is less than or equal to peak power output Pmax.Wherein, control method of the present invention includes step 101, step 103 and step 105, respectively explanation as following interior literary composition.Please refer to Fig. 1 and shown in Figure 3, step 101 provides dc voltage changer 3 and fuel cell 1, and the dc voltage changer input 31 of dc voltage changer 3 is connected with the fuel cell output 11 of fuel cell 1, and the mea in this fuel cell 1 produces electric power and sees through fuel cell output 11 and output current to dc voltage changer input 31 via electrochemical reaction.
Step 103 is the output power that dc voltage changer 3 utilizes fuel cell 1, and conversion is output as output and decides voltage.The electric power that dc voltage changer 3 is produced fuel cell 1, utilize circuitry means and see through step-down logic (buck logic) or boost logic (boost logic), this power conversions is exported for deciding voltage, and voltage is decided in this output outwards exported via dc voltage changer output 32, use to offer load 4.Certainly, voltage is decided in the output of dc voltage changer 3, is not limited to only export a kind of voltage of deciding, and according to the actual demand of load, dc voltage changer 3 can also be modified to possesses the ability that voltage is decided in different outputs.
Step 105 is decided within the electric current preset range for dc voltage changer 3 makes dc voltage changer input 31 maintain one, just making fuel cell output 11 maintain this decides within the electric current preset range, wherein should decide the electric current preset range be mea quantity and the current range value Imax below this mea institute output maximum power district according to fuel cell 1, limit this and decide the electric current predetermined range value.
In the above-mentioned steps, this dc voltage changer 3 sees through judges that whether size of current that this load 4 is required or watt level are greater than fuel cell 1 pairing current value I max or peak power output Pmax.If these load 4 required size of current or watt levels are less than or equal to fuel cell 1 pairing current value I max or peak power output Pmax, it is required that promptly the electric power exported of fuel cell 1 is enough to supply load 4; If size of current that this load 4 is required or watt level be greater than fuel cell 1 pairing current value I max or peak power output Pmax, promptly the power shortage exported of fuel cell 1 is required to supply with load 4.
In the above-mentioned steps, when maintaining, 1 output current value of fuel cell is less than or equal to current value I max, and the electric power that fuel cell 1 is exported is enough to supply load 4 and takes, this dc voltage changer 3 selects to stop the state that second battery 2 provides electric power, and through the power conversions that this dc voltage changer 3 is exported fuel cell 1 is burning voltage and electric current, supplies with these load 4 required electric powers via its dc voltage changer output 32.
In the above-mentioned steps, when maintaining, 1 output current value of fuel cell is less than or equal to current value I max, and the power shortage that fuel cell 1 is exported is taken to supply with load 4, this dc voltage changer 3 selects second battery 2 that the state of electric power is provided, and seeing through the power conversions that this dc voltage changer 3 exported fuel cell 1 and second battery 2 is burning voltage and electric current, supplies with these load 4 required electric powers via its dc voltage changer output 32.
In addition, in the above-mentioned steps, also can see through the performance number of fuel cell 1 output, decision selects second battery 2 whether to provide electric power.That is, when maintaining, 1 output power value of fuel cell is less than or equal to Pmax, and the electric power that fuel cell 1 is exported is enough to supply load 4 and takes, this dc voltage changer 3 selects to stop the state that second battery 2 provides electric power, and through the power conversions that this dc voltage changer 3 is exported fuel cell 1 is burning voltage and electric current, supplies with these load 4 required electric powers via its dc voltage changer output 32.Moreover, when maintaining, 1 output power value of fuel cell is less than or equal to Pmax, and the power shortage that fuel cell 1 is exported is taken to supply with load 4, this dc voltage changer 3 is selected the state of second battery 2 and fuel cell 1 parallel operation, and seeing through the power conversions that this dc voltage changer 3 exported fuel cell 1 and second battery 2 is burning voltage and electric current, supplies with these load 4 required electric powers via its dc voltage changer output 32.
In the above-mentioned steps, when fuel cell 1 is enough to supply separately the required electric power of this load 4, this dc voltage changer 3 can be selected to stop second battery 2 and continue supply capability to load 4, and selects this fuel cell 1 supply capability to the second battery 2 simultaneously, carries out the charging of second battery 2 thus.
In the above-mentioned steps, for making dc voltage changer input 31 maintain one, decides within the electric current preset range dc voltage changer 3, just making fuel cell output 11 maintain this decides within the electric current preset range, wherein should decide the electric current preset range be according to the current range value below the power output area of the mea quantity of fuel cell 1 and this mea institute output optimum working efficiency, limit this and decide the electric current predetermined range value.Wherein, the output of the power of this mea institute output optimum working efficiency is meant mea under fuel specific, can produce the state of maximum power power output.
Though the present invention with the specific embodiment explanation as above; right its specific embodiment of narrating is not in order to limit the present invention; any those of ordinary skill in the art; without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations; its change of doing all belongs to category of the present invention with retouching, and protection scope of the present invention is when looking being as the criterion that claim defines.
Claims (5)
1. a fuel battery power output control method is characterized in that, comprises the following steps:
One direct current electric pressure converter and at least one fuel cell and at least one second battery are provided, and the input of described dc voltage changer is connected with the output of described fuel cell; Another input of described dc voltage changer is connected with the output of described second battery;
This dc voltage changer is with the output power of this fuel cell, and conversion is output as an output and decides voltage;
This dc voltage changer makes the input of dc voltage changer maintain one to decide be less than or equal to current value I and keep this fuel cell institute output current value within the electric current preset range
Max, and the electric power exported of this fuel cell is enough to supply load and takes, and makes this dc voltage changer select to stop the state that second battery provides electric power; Keep this fuel cell institute output current value in addition and be less than or equal to current value I
Max, and the power shortage exported of this fuel cell taken to supply with load, makes the state of this dc voltage changer selection with second battery and fuel cell parallel operation;
Wherein, this decides the electric current preset range is mea quantity and the current range value below this mea institute output best power district according to fuel cell, limits this and decides the electric current predetermined range value.
2. fuel battery power output control method as claimed in claim 1, it is characterized in that this best power district is that the selection mea can produce the arbitrary state in output of maximum power power and the output of mea maximum power under fuel specific.
3. fuel battery power output control method as claimed in claim 1, it is characterized in that, further comprise the following steps: when fuel cell is enough to supply separately the required electric power of this load, this dc voltage changer is selected to stop second battery and is continued supply capability to load, and select this fuel cell supply capability to the second battery, carry out the charging of second battery thus.
4. fuel battery power output control method as claimed in claim 1 is characterized in that, this fuel cell is the fuel cell that utilizes the manufacturing of printed circuit board (PCB) processing procedure.
5. fuel battery power output control method as claimed in claim 1 is characterized in that, this second battery is for selecting the arbitrary battery in primary cell and the secondary cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101034542A CN100423405C (en) | 2005-09-15 | 2005-09-15 | Fuel battery power output control method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101034542A CN100423405C (en) | 2005-09-15 | 2005-09-15 | Fuel battery power output control method and application thereof |
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| Publication Number | Publication Date |
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| CN1933282A CN1933282A (en) | 2007-03-21 |
| CN100423405C true CN100423405C (en) | 2008-10-01 |
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| CNB2005101034542A Expired - Fee Related CN100423405C (en) | 2005-09-15 | 2005-09-15 | Fuel battery power output control method and application thereof |
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| CN110040038B (en) * | 2019-04-24 | 2020-03-17 | 中通客车控股股份有限公司 | Energy management control method and system for hydrogen-electricity hybrid fuel cell passenger car |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030113595A1 (en) * | 2001-12-19 | 2003-06-19 | Jungreis Aaron M. | Fuel cell system power control method and system |
| US20050095471A1 (en) * | 2003-11-04 | 2005-05-05 | Vince Winstead | Method of operating a hybrid power system within a state of charge window |
| CN1877481A (en) * | 2005-06-08 | 2006-12-13 | 胜光科技股份有限公司 | Method for controlling power output of fuel cell |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030113595A1 (en) * | 2001-12-19 | 2003-06-19 | Jungreis Aaron M. | Fuel cell system power control method and system |
| US20050095471A1 (en) * | 2003-11-04 | 2005-05-05 | Vince Winstead | Method of operating a hybrid power system within a state of charge window |
| CN1877481A (en) * | 2005-06-08 | 2006-12-13 | 胜光科技股份有限公司 | Method for controlling power output of fuel cell |
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| CN1933282A (en) | 2007-03-21 |
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Granted publication date: 20081001 Termination date: 20110915 |