CN101478049A - Mixed electric power device for fuel cell - Google Patents
Mixed electric power device for fuel cell Download PDFInfo
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- CN101478049A CN101478049A CNA2008100000576A CN200810000057A CN101478049A CN 101478049 A CN101478049 A CN 101478049A CN A2008100000576 A CNA2008100000576 A CN A2008100000576A CN 200810000057 A CN200810000057 A CN 200810000057A CN 101478049 A CN101478049 A CN 101478049A
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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
A fuel cell hybrid power device comprises a fuel cell power supply circuit including a fuel cell unit, a fuel cell voltage conversion unit and a detection unit; and a secondary battery power supply circuit further including a secondary battery and a charging unit, wherein the fuel cell power supply circuit is electrically connected with the secondary battery power supply circuit in parallel; the power input terminal of the secondary battery power supply circuit is electrically connected with the power output terminal of the fuel cell unit; the detection unit is used for adjusting the set voltage of the output terminal of the fuel cell power supply circuit and the set voltage of the output terminal of the secondary battery power supply circuit according to output power of the fuel cell power supply circuit to generate a difference between the two set voltages, and controlling the charging unit to charge the secondary battery unit; and the fuel cell unit outputs voltage at a set constant electric power.
Description
Technical field
The present invention is about a kind of mixed electric power device for fuel cell, and it particularly provides the electric adjustment of utilizing secondary cell and secondary cell electric power supply circuit in the fuel-cell device, and reaches the stable output control of fuel cell.
Background technology
In the known fuel cell, can be because the operating characteristic of fuel cell makes that its voltage-current characteristic can change along with the light or heavy of load when the load of fuel cell output power to.Be not enough to the electricity needs of offered load end when fuel cell, fuel cell can't produce enough electromotive force, possible consequential injury is to the running of fuel cell itself, so the present invention utilizes hybrid power installation, utilize other secondary cell or other DC power supply to assist, supplying with the electric power of guaranteeing load end does not have anxiety.
Moreover the fuel-cell device of this class is to utilize hydrogen-containing fuel and oxygenated fuel to see through chemical reaction and directly produce an electrical production device of electric power output, as direct methanol fuel cell (DMFC), proton exchange membrane type fuel cell (PEM) etc.Because the electric power of fuel cell output, except controlling the operating condition of fuel cell,, need cooperate the electric power of load to draw as temperature, fuel supply concentration etc., so that when the power demands of load is unstable, can cause the difficulty in the fuel battery operation control.Yet this types of fuel cells technology does not have relevant apparatus or the method for supplying with stable control at fuel cell power output electric power.
Therefore, the present invention is because the disappearance of known fuel cell output control, is the mixed electric power device for fuel cell of urgently thinking to invent a kind of this fuel cell output power of dynamic control that can be simply.
Summary of the invention
Main purpose of the present invention is to provide a mixed electric power device for fuel cell, the charhing unit that it has a secondary battery cell and provides this secondary battery cell to charge, in order to cooperate the required electric power in loop of fuel-cell device supply load, and power or voltage and size of current when regulating secondary cell charge simultaneously make fuel-cell device can export the electric power of stable size.
Another purpose of the present invention is to provide a mixed electric power device for fuel cell, and its fuel cell power supply circuit has sensing cell, in order to the electric power of sensing fuel-cell device output, and provides the foundation of controlling as relevant.
Still a further object of the present invention is to provide a mixed electric power device for fuel cell, and its fuel cell power supply circuit and secondary cell electric power supply circuit have voltage conversion unit respectively, in order to control the voltage that export in each loop.
For reaching above-mentioned purpose, a kind of mixed electric power device for fuel cell of the present invention, comprise: a fuel cell power supply circuit, it comprises a cell of fuel cell, a fuel battery voltage converting unit and a sensing cell, this cell of fuel cell is a fuel cell force generating apparatus, this fuel battery voltage converting unit is a voltage of power conversion equipment, the electricity characteristic that this fuel cell power supply circuit of this sensing cell sensing is exported, and output is to the electrical signal of electricity characteristic that should the cell of fuel cell output power; An and secondary cell electric power supply circuit, it further comprises a secondary cell and a charhing unit, this secondary cell is a chargeable electrical storage device, this charhing unit is a power control unit, and controls this secondary cell electric power supply circuit by this charhing unit and supply the electricity characteristic that this secondary cell charges; Wherein this fuel cell power supply circuit and electric being connected in parallel of this secondary cell electric power supply circuit, and the power input end of this secondary cell electric power supply circuit is electrically connected the power output end of this cell of fuel cell, the power output end of this secondary cell electric power supply circuit is electrically connected the power output end of this fuel cell power supply circuit, this fuel battery voltage converting unit of the electric series connection of this fuel cell is in this fuel cell power supply circuit, and this sensing cell is electrically connected this charhing unit; The electrical signal that this charhing unit is exported according to this sensing cell and determine this secondary cell electric power supply circuit to supply the electricity characteristic that this secondary cell charges; The transferring electric power of this fuel cell power supply circuit of this sense unit is regulated the setting voltage value of this fuel cell power supply circuit output and the setting voltage value of this secondary cell electric power supply circuit output, and have difference between this two setting voltage value, and control the charging that this charhing unit carries out this secondary battery cell; And the fixedly electric power output power of this cell of fuel cell to set.
Aforementioned in addition mixed electric power device for fuel cell of the present invention comprises: a plurality of fuel cell power supply circuits, each fuel cell power supply circuit comprises a cell of fuel cell and a fuel battery voltage converting unit respectively, this cell of fuel cell is a fuel cell force generating apparatus, and this fuel battery voltage converting unit is a voltage of power conversion equipment; One sensing cell, the electricity characteristic that this fuel cell power supply circuit of its sensing is exported, and output is to the electrical signal of electricity characteristic that should the fuel cell power supply circuit; An and secondary cell electric power supply circuit, it further comprises a secondary cell and a charhing unit, this secondary cell is a chargeable electrical storage device, this charhing unit is a power control unit, and controls this secondary cell electric power supply circuit by this charhing unit and supply the electricity characteristic that this secondary cell charges; Mutual electric being connected in parallel of those fuel cell power supply circuits and this secondary cell electric power supply circuit wherein, connected in electrical series is in this fuel cell power supply circuit respectively for this fuel cell, this fuel battery voltage converting unit and this sensing cell, and this sensing cell is electrically connected this charhing unit; The electrical signal that this charhing unit is exported according to this sensing cell and determine this secondary cell electric power supply circuit to supply the electricity characteristic that this secondary cell charges; And the transferring electric power of this fuel cell power supply circuit of this sense unit and regulate voltage difference between this fuel cell power supply circuit output and this secondary cell electric power supply circuit output, and control the charging that this charhing unit carries out this secondary battery cell.
For understanding purpose of the present invention, feature and effect, now by following specific embodiment, and cooperate graphic, to the present invention illustrate in detail as after.
Description of drawings
Fig. 1 shows the component liaison figure of mixed electric power device for fuel cell first specific embodiment of the present invention;
Fig. 2 shows the signal control schematic diagram of mixed electric power device for fuel cell of the present invention;
Fig. 3 shows another signal control schematic diagram of mixed electric power device for fuel cell of the present invention;
Fig. 4 shows the component liaison figure of mixed electric power device for fuel cell second specific embodiment of the present invention; And
Fig. 5 shows the component liaison figure of mixed electric power device for fuel cell the 3rd specific embodiment of the present invention.
The primary clustering symbol description
Fuel cell power supply circuit 1
Cell of fuel cell 11
Fuel battery voltage converting unit 12
Sensing cell 13
Secondary cell electric power supply circuit 2
Charhing unit 21
Secondary battery cell 22
Load 3
Fuel cell power supply circuit 4
Cell of fuel cell 41
Fuel battery voltage converting unit 42
Sensing component 431
Secondary cell electric power supply circuit 5
Secondary cell voltage converting unit 53
Cell of fuel cell power output 1001
Load loss power 1002
Charhing unit electric power 1003
Secondary cell electric power supply circuit power output 1004
Fuel cell power supply circuit output setting voltage 1005
The first magnitude of voltage 1005a
The second magnitude of voltage 1005b
Tertiary voltage value 1005c
The 4th magnitude of voltage 1005d
Secondary cell electric power supply circuit output voltage 1006
Embodiment
With reference to shown in Figure 1, be the component liaison figure of mixed electric power device for fuel cell first specific embodiment of the present invention.The invention provides a kind of mixed electric power device for fuel cell, it comprises a fuel cell power supply circuit 1 and a secondary cell electric power supply circuit 2, the stable electric power of these cell of fuel cell 11 outputs, and according to a load 3 required electric powers, and determine this secondary cell electric power supply circuit 2 power outputs, or determining this cell of fuel cell 11 that part electric power is supplied with this secondary cell electric power supply circuit 2 charges.
In the aforementioned mixed electric power device for fuel cell of the present invention, fuel cell power supply circuit 1 comprises a cell of fuel cell 11, a fuel battery voltage converting unit 12 and a sensing cell 13, and wherein this cell of fuel cell 11 is to utilize hydrogen-rich fuel and oxygen to carry out chemical reaction and the power generating device that produces electric power output; This fuel battery voltage converting unit 12 is voltage conversion devices that an end is electrically connected a direct current electric power of this cell of fuel cell 11, and can include direct current power boost loop or direct current power reduction voltage loop, the direct current power of using the input of this cell of fuel cell 11 these fuel battery voltage converting units 12 of input is converted to the direct current power output with specific voltage; And this sensing cell 13 is electric power sensing devices that are electrically connected this fuel cell power supply circuit 1, the electricity characteristic that is transmitted in order to this fuel cell power supply circuit 1 of sensing, and output is to electrical signal that should electricity characteristic, for instance, this electricity characteristic can be size of current, voltage swing or the watt level of this part, fuel cell power supply circuit 1 loop.In addition, can be according to the circuit characteristic of this fuel cell power supply circuit 1, acquisition is to cell of fuel cell 11 output power characteristics that should fuel cell power supply circuit 1 loop local power characteristic, and its corresponding relation can utilize modes such as experiment, theoretical calculate or numerical method to obtain.
Moreover, in the aforementioned mixed electric power device for fuel cell of the present invention, this secondary cell electric power supply circuit 2 comprises a charhing unit 21 and a secondary battery cell 22, wherein this secondary battery cell 22 is a chargeable electrical storage device, this charhing unit 21 is a power control unit, and can supply electric power or electric current and the voltage swing that this secondary battery cell 22 is charged in order to control.The power input end of this charhing unit 21 is electrically connected this fuel cell power supply circuit 1, the power output end of this charhing unit 21 is electrically connected this secondary battery cell 22, and the power output end of this secondary battery cell 22 is electrically connected the power output end of this fuel cell power supply circuit 1.
Cell of fuel cell 11 power output ends in the aforesaid fuel cell power supply circuit 1 are electrically connected this secondary cell electric power supply circuit 2, the power output end of this fuel cell power supply circuit 1 is electrically connected the power output end of this secondary cell electric power supply circuit 2, make that this cell of fuel cell 11 can be from this fuel cell power supply circuit 1 output power to this secondary cell electric power supply circuit 2 or this load 3, and the cell of fuel cell in this fuel cell power supply circuit 1 11 can form mixed power supply with secondary battery cell 22 in this secondary cell electric power supply circuit 2 and gives this load 3.
Therefore, the direct current power that this cell of fuel cell 11 is exported can transfer to this fuel battery voltage converting unit 12 via this fuel cell power supply circuit 1, export the direct current power of a specific voltage with the voltage transitions of carrying out direct current power, and transfer to this load 3, for the required direct current power of this load 3.Moreover, this sensing cell 13 can be detected electric current, voltage or the electric power power state of this fuel cell power supply circuit 1, and the result that detects is fed back to this fuel battery voltage converting unit 12 with the signal of a correspondence, use the running of this fuel battery voltage converting unit 12 of control.
In aforementioned this fuel cell power supply circuit 1 and this secondary cell electric power supply circuit 2 electric in parallel, but the power output end connected in electrical series one diode (not shown) of the secondary battery cell 22 of this secondary cell electric power supply circuit 2 is used the power output end that prevents from this fuel cell power supply circuit 1 and is caused reverse current to enter the power output end of the secondary battery cell 22 of this secondary cell electric power supply circuit 2.In addition, if the power output end of this secondary battery cell 22 has in the situation of direct current power electric pressure converter, can ignore the setting of this diode.Because this class prevents that the technology of reverse current from belonging to the general technology of electric power system, so on behalf of the present invention, just explanation use as an example of the reverse current mode that the present invention carried limit in the disclosed mode of specification and reached the purpose that prevents reverse current.
Cooperation simultaneously in addition again with reference to shown in Figure 2, is the signal control schematic diagram of mixed electric power device for fuel cell of the present invention with reference to figure 1.In aforementioned mixed electric power device for fuel cell of the present invention, the electric power that the cell of fuel cell 11 of this fuel cell power supply circuit 1 is produced is a cell of fuel cell power output 1001, this electric power also carries out power conversions and output power via this fuel battery voltage converting unit 12, and output voltage is a fuel cell power supply circuit output setting voltage 1005, the power that these load 3 runnings are consumed is load loss power 1002, the power that this charhing unit 21 is accepted these cell of fuel cell 11 supplies is a charhing unit electric power 1003, the exportable electric power of electric power that the secondary battery cell 22 of this secondary cell electric power supply circuit 2 produces is a secondary cell electric power supply circuit power output 1004, and output voltage is a secondary cell electric power supply circuit output voltage 1006.
Aforementioned this cell of fuel cell power output 1001 mainly is to output power power that should cell of fuel cell 11, in fact must consider the power consumption in this fuel cell power supply circuit 1, when for example carrying out power conversions via this fuel battery voltage converting unit 12, have the generation of power consumption, be only the electric power of being exported through this fuel cell power supply circuit 1 after making this cell of fuel cell power output 1001 must deduct the power consumption of this fuel battery voltage converting unit 12, but these power consumptions can be estimated, and can compensate the judgment value of this cell of fuel cell power output 1001 through the design of this sensing cell 13.
In the aforementioned signal shown in Figure 2 control schematic diagram, when equaling load loss power 1002, this cell of fuel cell power output 1001 is defined as the Zhong Zai district, when this cell of fuel cell power output 1001 is defined as the low district of carrying during greater than this load loss power 1002, when this cell of fuel cell power output 1001 is defined as Gao Zaiqu during less than this load loss power 1002.Wherein when in the situation in Zhong Zai district, this fuel cell power supply circuit output setting voltage 1005 is a little more than this secondary cell electric power supply circuit output voltage 1006, and the charhing unit electric power 1003 that this cell of fuel cell 11 exports this charhing unit 21 to is zero, the secondary cell electric power supply circuit power output 1004 that this secondary cell electric power supply circuit 2 is exported is zero, and this cell of fuel cell power output 1001 just provides the load loss power 1002 of this load 3, this charhing unit 21 does not carry out the charging of this secondary battery cell 22, this secondary battery cell 22 also not output power to this load 3; When carrying in the situation of distinguishing low, this fuel cell power supply circuit output setting voltage 1005 is a little more than this secondary cell electric power supply circuit output voltage 1006, and the secondary cell electric power supply circuit power output 1004 that makes this secondary cell electric power supply circuit 2 be exported is zero, it is non-vanishing that this cell of fuel cell 11 exports the charhing unit electric power 1003 of this charhing unit 21 to, and make this cell of fuel cell 11 keep the same power output in He Zhongzai district, the electric power that this cell of fuel cell 11 is exported is except the load loss power 1002 of supplying with this load 300, this cell of fuel cell 11 also is supplied to other excrescent electric power this charhing unit 21 and carries out the charging of this secondary battery cell 22, and this secondary battery cell 22 can output power yet to this load 3; And when in the situation of Gao Zaiqu, this sensing cell 13 carries out the voltage transitions of this fuel battery voltage converting unit 12 of regulating and controlling according to the power state of this fuel cell power supply circuit 1, make and produce a difference between this fuel cell power supply circuit output setting voltage 1005 and this secondary cell electric power supply circuit output voltage 1006, and make the cell of fuel cell 11 of this fuel cell power supply circuit 1 and the secondary battery cell 22 of this secondary cell electric power supply circuit 2 work in coordination with output powers to this load 3, make this cell of fuel cell 11 keep the same power output in He Zhongzai district simultaneously, under the defeated damage of the biography of not considering fuel cell power supply circuit 1 Mao, the power output summation of this cell of fuel cell power output 1001 and this secondary cell electric power supply circuit power output 1004 equals the load loss power 1002 of this load 3.Therefore, mixed electric power device for fuel cell of the present invention can be stablized the output power of the cell of fuel cell 11 of this fuel cell power supply circuit 1, and the electric power output that can see through the voltage control of this fuel battery voltage converting unit 12 simultaneously and cooperate the secondary battery cell 22 of this secondary cell electric power supply circuit 2 is stable and quantitative output and the electricity needs that can satisfy this load 3 with the electric power of keeping this cell of fuel cell 11 simultaneously.
More particularly, in the Gao Zaiqu output allocation proportion under stable state output, be to make when this cell of fuel cell power output 1001 is higher than this secondary cell electric power supply circuit power output 1004, this cell of fuel cell power output 1001 is to adopt one first voltage setting value 1005a in the Gao Zai district, and this first voltage setting value 1005a is a little more than this secondary cell electric power supply circuit output setting voltage 1006.In addition, in the Gao Zaiqu output allocation proportion under stable state output, be to make when this cell of fuel cell power output 1001 is lower than this secondary cell electric power supply circuit power output 1004, this cell of fuel cell power output 1001 is to adopt one second voltage setting value 1005b in the Gao Zai district, and this second voltage setting value 1005b is a little less than this secondary cell electric power supply circuit output voltage 1006.Aforementioned in the Gao Zai district, the first voltage setting value 1005a of this fuel cell power supply circuit output setting voltage 1005 and the difference of this secondary cell electric power supply circuit output voltage 1006, or the second voltage setting value 1005b and the difference of this secondary cell electric power supply circuit output voltage 1006 of this fuel cell power supply circuit output setting voltage 1005, can determine the ratio of this cell of fuel cell power output 1001 and this secondary cell electric power supply circuit power output 1004.
Voltage, electric current or the power of the direct current power that aforesaid sensing cell 13 can be exported in order to this cell of fuel cell 11 of sensing, making can be according to the electrical signal of these sensing cell 13 feedbacks, control the direct current power conversion proportion of this fuel battery voltage converting unit 12, and then keep the electric power output of this cell of fuel cell 11.
Again with reference to shown in Figure 3, be another signal control schematic diagram of mixed electric power device for fuel cell of the present invention in addition.During in the foregoing embodiments Gao Zai district, mixed electric power device for fuel cell of the present invention is to see through this sensing cell 13 to detect to such an extent that the result is fed back to this fuel battery voltage converting unit 12 with the signal of a correspondence and uses the cell of fuel cell 11 of this fuel cell power supply circuit 1 of control to form the tertiary voltage set point 1005c of high potential be the voltage signal form of reciprocating vibration at Gao Zaiqu with the 4th voltage setting value 1005d than electronegative potential, wherein can see through the difference of this fuel cell power supply circuit output setting voltage 1005 of control and this secondary cell electric power supply circuit output voltage 1006, use the output allocation proportion of this cell of fuel cell power output 1001 of control and this secondary cell electric power supply circuit power output 1004, under the defeated damage of the biography of not considering fuel cell power supply circuit 1 Mao, make this cell of fuel cell power output 1001 and the summation of this secondary cell electric power supply circuit power output 1004 be reached this load 3 needed load loss power 1002.In addition, also can see through this fuel cell power supply circuit output setting voltage 1005 tertiary voltage set point 1005c and the 4th formed cycle of voltage setting value 1005d reciprocating vibration (duty cycle) in the Gao Zai district of control, use the output allocation proportion of this cell of fuel cell power output 1001 of control and this secondary cell electric power supply circuit power output 1004, under the defeated damage of the biography of not considering fuel cell power supply circuit 1 Mao, make this cell of fuel cell power output 1001 and the summation of this secondary cell electric power supply circuit power output 1004 be reached this load 3 needed load loss power 1002.
With reference to shown in Figure 4, be the component liaison figure of mixed electric power device for fuel cell second specific embodiment of the present invention.In the previous embodiment, this secondary cell electric power supply circuit 5 may further include a secondary cell voltage converting unit 53, this secondary cell voltage converting unit 53 is the circuit of a direct current electric power energy storage and release energy machine system, its connected in electrical series is connected in the rear end of the secondary battery cell 52 of this secondary cell electric power supply circuit 5, the electric power that makes this secondary battery cell 52 be exported can be exchanged into stable voltage output, and in parallelly with these fuel cell power supply circuit 4 output powers export this load 6 to, to provide this load 6 required electric power.This secondary cell voltage converting unit 53 can have common electric current restriction scheme, and can see through rational controlling signal, the output voltage that the size of current of this secondary cell voltage converting unit 53 of control input or the size of current of this secondary cell voltage converting unit 53 outputs are no more than a load current value and regulate these secondary cell voltage converting unit 53 conversions.Therefore, aforementioned seeing through in the control method of regulating this fuel cell power supply circuit 4 and these secondary cell electric power supply circuit 5 output power voltages, also can see through regulate the output voltage behind secondary cell voltage converting unit 53 these secondary battery cell 52 electric power of conversion of this secondary cell electric power supply circuit 5 and reach, or the voltage setting value of regulating the secondary cell voltage converting unit 53 of the voltage setting value of fuel battery voltage converting unit 42 of this fuel cell power supply circuit 4 and this secondary cell electric power supply circuit 5 is simultaneously reached.That is be meant, show that as Fig. 2 and Fig. 3 this fuel cell power supply circuit output setting voltage 1005 is relativenesses with this secondary cell electric power supply circuit output voltage 1006, it mainly is to mix output when the cell of fuel cell 41 of this fuel cell power supply circuit 4 with the electric power of the secondary battery cell 52 of this secondary cell electric power supply circuit 5, be that the pressure reduction that sees through between this fuel cell power supply circuit output setting voltage 1005 of control and this secondary cell electric power supply circuit output voltage 1006 is regulated, or the variation of this pressure reduction.
Moreover among the aforesaid embodiment, an embodiment of the sensing cell 43 of this fuel cell power supply circuit 4 can further comprise a sensing component 431 and a microcontroller 433.Wherein this sensing component 431 is electrically connected in this fuel cell power supply circuit 4, in order to export the electrical signal of a correspondence according to institute's transferring electric power in this fuel cell power supply circuit 4 to this microcontroller 433; And this microcontroller 433 can be according to the electrical signal of input and the voltage signal of exportable correspondence, and this microprocessor 433 is electrically connected this sensing component 431, this fuel battery voltage converting unit 42 and this secondary cell voltage converting unit 53, and the electricity characteristic signal that is provided according to this sensing component 431, produce the voltage signal of a correspondence, again this voltage signal is fed back to this fuel battery voltage converting unit 42 or this secondary cell voltage converting unit 53, use the voltage swing of the electric power of being exported after the voltage transitions of setting this fuel battery voltage converting unit 42 or this secondary cell voltage converting unit 53, and reach the distributing electric power output control of this fuel cell power supply circuit 42 with this secondary cell electric power supply circuit 53 of previous embodiment.
Sensing component 431 in the aforesaid sensing cell 43 can be selected from circuit, Hall subassembly and the sensor chip that differential amplifier forms one or several assemblies and constitute, therefore can be according to 4 electric current transmitted values of this fuel cell power supply circuit, magnitude of voltage or electrical power value, export the electrical signal of a correspondence, this electrical signal can provide this microprocessor 433 to carry out logic calculus required in the control program.Or this sensing cell 43 also can omit the use of this microprocessor 433, and directly the electrical signal of this sensing component 431 is directly controlled the distributing electric power of this fuel cell power supply circuit 42 and this secondary cell electric power supply circuit 53.
In addition, this sensing cell 43 also can be arranged on this fuel cell power supply circuit 4, and at the electric connecting point of this fuel cell power supply circuit 4 and these secondary cell electric power supply circuit 5 output powers between this load 6, electric power quantity delivered or other electrical characteristic contributed in order to the cell of fuel cell 41 in the detecting fuel cell power supply circuit 4.
With reference to shown in Figure 5, be the component liaison figure of mixed electric power device for fuel cell the 3rd specific embodiment of the present invention.The invention provides a kind of mixed electric power device for fuel cell, it comprises a plurality of fuel cell power supply circuits 4 and a secondary cell electric power supply circuit 5, those fuel cell power supply circuits 4 are exported stable electric power respectively, and according to a load 6 required electric powers, and determine this secondary cell electric power supply circuit 5 power outputs, or determining each this fuel cell power supply circuit 4 that part electric power is supplied with this secondary cell electric power supply circuit 5 charges.
In the aforementioned mixed electric power device for fuel cell of the present invention, those fuel cell power supply circuits 4 comprise a cell of fuel cell 41 and a fuel battery voltage converting unit 42 respectively, and those fuel cell power supply circuits 4 see through the electric power that a sensing cell 43 is detected each fuel cell power supply circuit 4 transmission respectively, and wherein this cell of fuel cell 41 is to utilize hydrogen-rich fuel and oxygen to carry out chemical reaction and produce the power generating device that electric power is exported; This fuel battery voltage converting unit 42 is voltage conversion devices that an end is electrically connected a direct current electric power of this cell of fuel cell 41, and can include direct current power boost loop or direct current power reduction voltage loop, the direct current power of using the input of this cell of fuel cell 41 these fuel battery voltage converting units 42 of input is converted to the direct current power output with specific voltage; And this sensing cell 43 is electrically connected each this fuel cell power supply circuit 4, the electricity characteristic that is transmitted in order to this fuel cell power supply circuit 4 of sensing, and output is to electrical signal that should electricity characteristic, for instance, this electricity characteristic can be size of current, voltage swing or the watt level of these fuel cell power supply circuit 4 minor loops.
Moreover, in the aforementioned mixed electric power device for fuel cell of the present invention, this secondary cell electric power supply circuit 5 comprises a charhing unit 51 and a secondary battery cell 52, wherein this secondary battery cell 52 is a chargeable electrical storage device, this charhing unit 51 is a power control unit, and can supply electric power or electric current and the voltage swing that this secondary battery cell 52 is charged in order to control.The power input end of this charhing unit 51 is electrically connected this fuel cell power supply circuit 4, the power output end of this charhing unit 51 is electrically connected this secondary battery cell 52, the power output end of this secondary battery cell 52 is electrically connected this secondary cell voltage converting unit 53, the power output end of electric this fuel cell power supply circuit 4 that is connected in parallel of the power output end of this secondary cell voltage converting unit 53.
In the aforesaid fuel cell power supply circuit 4, cell of fuel cell 41 power output ends of a fuel cell power supply circuit 4 at least wherein are electrically connected this secondary cell electric power supply circuit 5, the power output end of electric this secondary cell electric power supply circuit 5 that is connected in parallel of the power output end of those fuel cell power supply circuits 4, make that those cell of fuel cell 41 can be from pairing fuel cell power supply circuit 4 output powers to this secondary cell electric power supply circuit 5 or this load 6, and the cell of fuel cell in those fuel cell power supply circuits 4 41 can form mixed power supply with secondary battery cell 52 in this secondary cell electric power supply circuit 5 and gives this load 6.
Aforesaid in addition secondary cell electric power supply circuit 5 can further comprise a secondary cell voltage converting unit 53, this secondary cell voltage converting unit 53 is the circuit of a direct current electric power energy storage and release energy machine system, its connected in electrical series is connected in the rear end of the secondary battery cell 52 of this secondary cell electric power supply circuit 5, the electric power that makes this secondary battery cell 52 be exported can be exchanged into stable voltage output, and in parallelly with the output power of the cell of fuel cell 41 of this fuel cell power supply circuit 4 export this load 6 to, to provide this load 6 required electric power.This secondary cell voltage converting unit 53 can have common electric current restriction scheme, and can see through rational controlling signal, the output voltage that the size of current of this secondary cell voltage converting unit 53 of control input or the size of current of this secondary cell voltage converting unit 53 outputs are no more than a load current value and regulate these secondary cell voltage converting unit 53 conversions.
The direct current power that aforesaid each cell of fuel cell 41 is exported can transfer to this fuel battery voltage converting unit 42 via pairing fuel cell power supply circuit 4, export the direct current power of a specific voltage with the voltage transitions of carrying out direct current power, and transfer to this load 6, for the required direct current power of this load 6.Moreover, this sensing cell 43 can be detected electric current, voltage or the electric power power state of each this fuel cell power supply circuit 4, and the result that detects is fed back to this fuel battery voltage converting unit 42 with the signal of a correspondence, use the running of this fuel battery voltage converting unit 42 of control.
In the present embodiment, this sensing cell 43 is the voltage difference control methods that can see through previous embodiment, regulate the output voltage behind these secondary battery cell 52 electric power of secondary cell voltage converting unit 53 conversion of those fuel battery voltage converting units 42 or this secondary cell electric power supply circuit 5 and reach, or the fuel battery voltage converting unit 42 of regulating those fuel cell power supply circuits 4 is simultaneously reached with the secondary cell voltage converting unit 53 of this secondary cell electric power supply circuit 5.
Though the present invention discloses as above with specific embodiment; right its disclosed specific embodiment is not in order to limit the present invention; anyly be familiar with this skill person; 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 as the criterion when looking the claim person of defining.
Claims (27)
1, a kind of mixed electric power device for fuel cell comprises:
One fuel cell power supply circuit, it comprises a cell of fuel cell, a fuel battery voltage converting unit and a sensing cell, this cell of fuel cell is a fuel cell force generating apparatus, this fuel battery voltage converting unit is a voltage of power conversion equipment, the electricity characteristic that this fuel cell power supply circuit of this sensing cell sensing is exported, and output is to the electrical signal of electricity characteristic that should the cell of fuel cell output power; And
One secondary cell electric power supply circuit, it further comprises a secondary cell and a charhing unit, this secondary cell is a chargeable electrical storage device, this charhing unit is a power control unit, and controls this secondary cell electric power supply circuit by this charhing unit and supply the electricity characteristic that this secondary cell charges;
Wherein this fuel cell power supply circuit and electric being connected in parallel of this secondary cell electric power supply circuit, and the power input end of this secondary cell electric power supply circuit is electrically connected the power output end of this cell of fuel cell, the power output end of this secondary cell electric power supply circuit is electrically connected the power output end of this fuel cell power supply circuit, this fuel battery voltage converting unit of the electric series connection of this fuel cell is in this fuel cell power supply circuit, and this sensing cell is electrically connected this charhing unit; The electrical signal that this charhing unit is exported according to this sensing cell and determine this secondary cell electric power supply circuit to supply the electricity characteristic that this secondary cell charges; The transferring electric power of this fuel cell power supply circuit of this sense unit is regulated the setting voltage value of this fuel cell power supply circuit output and the setting voltage value of this secondary cell electric power supply circuit output, and have difference between this two setting voltage, and control the charging that this charhing unit carries out this secondary battery cell; And the fixedly electric power output power of this cell of fuel cell to set.
2, mixed electric power device for fuel cell as claimed in claim 1, it is characterized in that: the electric power that this fuel cell power supply circuit is exported is lower than in the state of the electric power that this cell of fuel cell exports, this sensing cell is regulated the setting voltage value of this fuel cell power supply circuit output or the setting voltage value of this secondary cell electric power supply circuit output, make this fuel cell power supply circuit output power and this secondary cell electric power supply circuit output stop output power, and this sensing cell selects the charhing unit of this secondary cell electric power supply circuit to carry out the charging of this secondary cell, this sensing cell is regulated the electric power in the charging process of this charhing unit, makes this cell of fuel cell keep the fixedly electric power output power to set.
3, mixed electric power device for fuel cell as claimed in claim 2, it is characterized in that: the setting voltage value that this sensing cell is controlled this fuel cell power supply circuit output voltage is higher than the setting voltage value of this secondary cell electric power supply circuit output voltage, to select to stop this secondary cell electric power supply circuit output power.
4, mixed electric power device for fuel cell as claimed in claim 3 is characterized in that: this sensing cell is regulated the difference between this fuel battery voltage converting unit output voltage and this secondary cell electric power supply circuit output voltage.
5, mixed electric power device for fuel cell as claimed in claim 4, it is characterized in that: this secondary cell electric power supply circuit power output end further comprises a secondary cell voltage converting unit, and this secondary cell voltage converting unit is a voltage of power conversion equipment; And this sensing cell is regulated the difference between this fuel battery voltage converting unit output voltage and this secondary cell voltage converting unit output voltage.
6, mixed electric power device for fuel cell as claimed in claim 4, it is characterized in that: this secondary cell electric power supply circuit power output end further comprises a secondary cell voltage converting unit, and this secondary cell voltage converting unit is a voltage of power conversion equipment; And the difference that this sensing cell is regulated between the setting voltage of the setting voltage of this fuel battery voltage converting unit output voltage and this secondary cell voltage converting unit output voltage forms the voltage signal with specific period, in order to control the power output allocation proportion of this fuel cell power supply circuit and this secondary cell electric power supply circuit.
7, mixed electric power device for fuel cell as claimed in claim 1, it is characterized in that: this fuel cell power supply circuit institute output power is higher than in the state of the electric power that this cell of fuel cell exports, this sensing cell is regulated the setting voltage value of this fuel cell power supply circuit output and the setting voltage value of this secondary cell electric power supply circuit output, and this sensing cell selects the charhing unit of this secondary cell electric power supply circuit to stop the charging of this secondary cell, make all output powers of this fuel cell power supply circuit and this secondary cell electric power supply circuit output, and make this cell of fuel cell keep fixedly electric power output power to set.
8, mixed electric power device for fuel cell as claimed in claim 7, it is characterized in that: this sensing cell is controlled the setting voltage value of the setting voltage value of this fuel cell power supply circuit output voltage a little more than this secondary cell electric power supply circuit output voltage, keeping the fixedly electric power output power of this cell of fuel cell to set, and the output power power of this secondary cell electric power supply circuit output is lower than the output power power of this cell of fuel cell; And this sensing cell is controlled the setting voltage value of the setting voltage value of this fuel cell power supply circuit output voltage a little less than this secondary cell electric power supply circuit output voltage, keeping the fixedly electric power output power of this cell of fuel cell to set, and the output power power of this secondary cell electric power supply circuit output is higher than the output power power of this cell of fuel cell.
9, mixed electric power device for fuel cell as claimed in claim 8 is characterized in that: this sensing cell is regulated the difference between this fuel battery voltage converting unit output voltage and this secondary cell electric power supply circuit output voltage.
10, mixed electric power device for fuel cell as claimed in claim 9, it is characterized in that: this secondary cell electric power supply circuit power output end further comprises a secondary cell voltage converting unit, and this secondary cell voltage converting unit is a voltage of power conversion equipment; And this sensing cell is regulated the difference between this fuel battery voltage converting unit output voltage and this secondary cell voltage converting unit output voltage.
11, mixed electric power device for fuel cell as claimed in claim 7, it is characterized in that: the difference that this sensing cell is regulated between the setting voltage of the setting voltage of this fuel cell power supply circuit output voltage and this secondary cell electric power supply circuit output voltage forms the voltage signal with specific period, in order to control the power output allocation proportion of this fuel cell power supply circuit and this secondary cell electric power supply circuit.
12, mixed electric power device for fuel cell as claimed in claim 11, it is characterized in that: the setting voltage that this sensing cell is regulated this fuel battery voltage converting unit output forms the voltage signal with specific period, and reach the voltage signal that difference formation between the setting voltage of the setting voltage of regulating this fuel cell power supply circuit output voltage and this secondary cell electric power supply circuit output voltage has specific period, in order to control the power output allocation proportion of this fuel cell power supply circuit and this secondary cell electric power supply circuit.
13, mixed electric power device for fuel cell as claimed in claim 12, it is characterized in that: this secondary cell electric power supply circuit power output end further comprises a secondary cell voltage converting unit, and this secondary cell voltage converting unit is a voltage of power conversion equipment; And the difference that this sensing cell is regulated between the setting voltage of the setting voltage of this fuel battery voltage converting unit output voltage and this secondary cell voltage converting unit output voltage forms the voltage signal with specific period, in order to control the power output allocation proportion of this fuel cell power supply circuit and this secondary cell electric power supply circuit.
14, mixed electric power device for fuel cell as claimed in claim 1, it is characterized in that: the electric power that this fuel cell power supply circuit is transmitted equals in the state of the electric power that this cell of fuel cell exports, this sensing cell is regulated the setting voltage value of this fuel cell power supply circuit output and the setting voltage value of this secondary cell electric power supply circuit output, and this sensing cell selects the charhing unit of this secondary cell electric power supply circuit to stop the charging of this secondary cell, makes this fuel cell power supply circuit output power and this secondary cell electric power supply circuit output stop output power and this cell of fuel cell and keeps fixedly electric power output power to set.
15, mixed electric power device for fuel cell as claimed in claim 1 is characterized in that: this fuel battery voltage converting unit comprises at least one direct current power booster circuit and at least one direct current power reduction voltage circuit.
16, mixed electric power device for fuel cell as claimed in claim 1, it is characterized in that: this sensing cell further comprises a sensing component and a microcontroller, this sensing component is electrically connected in this fuel cell power supply circuit, and the electrical signal of exporting a correspondence according to electric power that this fuel cell power supply circuit transmitted is to this microcontroller, and this sensing cell sees through this microcontroller and regulates the voltage difference between this fuel cell power supply circuit output and this secondary cell electric power supply circuit output and control the charging that this charhing unit carries out this secondary battery cell.
17, mixed electric power device for fuel cell as claimed in claim 1 is characterized in that: this sensing cell selects to be arranged at the high potential place of this fuel cell power supply circuit and the arbitrary position in the electronegative potential place.
18, mixed electric power device for fuel cell as claimed in claim 1, it is characterized in that: this sensing cell comprises a sensing component, this sensing component is selected from the assembly in circuit, a Hall subassembly and the sensor chip that a differential amplifier forms, and, export the electrical signal of a correspondence according to current value, magnitude of voltage or electrical power value that this fuel cell power supply circuit is exported.
19, a kind of mixed electric power device for fuel cell comprises:
A plurality of fuel cell power supply circuits, each fuel cell power supply circuit comprises a cell of fuel cell and a fuel battery voltage converting unit respectively, this cell of fuel cell is a fuel cell force generating apparatus, and this fuel battery voltage converting unit is a voltage of power conversion equipment;
One sensing cell, the electricity characteristic that this fuel cell power supply circuit of its sensing is exported, and output is to the electrical signal of electricity characteristic that should the fuel cell power supply circuit; And
One secondary cell electric power supply circuit, it further comprises a secondary cell and a charhing unit, this secondary cell is a chargeable electrical storage device, this charhing unit is a power control unit, and controls this secondary cell electric power supply circuit by this charhing unit and supply the electricity characteristic that this secondary cell charges;
Wherein those fuel cell power supply circuits and electric being connected in parallel of this secondary cell electric power supply circuit, and the power input end of this secondary cell electric power supply circuit is electrically connected the power output end of those cell of fuel cell, the power output end of this secondary cell electric power supply circuit is electrically connected the power output end of those fuel cell power supply circuits, the fuel battery voltage converting unit of the electric series connection correspondence of those fuel cells is in pairing fuel cell power supply circuit, and this sensing cell is electrically connected this charhing unit; The electrical signal that this charhing unit is exported according to this sensing cell and determine this secondary cell electric power supply circuit to supply the electricity characteristic that this secondary cell charges; The transferring electric power of this fuel cell power supply circuit of this sense unit is regulated the setting voltage value of those fuel cell power supply circuit outputs and the setting voltage value of this secondary cell electric power supply circuit output, and the voltage difference that has between these those setting voltage values, and control the charging that this charhing unit carries out this secondary battery cell; And those cell of fuel cell are stably exported the constant power electric power of setting with the fixedly electric power of setting respectively.
20, mixed electric power device for fuel cell as claimed in claim 19, it is characterized in that: the arbitrary electric power that transmits in those fuel cell power supply circuits is lower than in the state of the electric power that this cell of fuel cell exports, this sensing cell is regulated the setting voltage value of pairing fuel cell power supply circuit output and the setting voltage value of this secondary cell electric power supply circuit output, make pairing fuel cell power supply circuit output power and this secondary cell electric power supply circuit output stop output power, and this sensing cell selects the charhing unit of this secondary cell electric power supply circuit to carry out the charging of this secondary cell, this sensing cell is regulated the electric power in the charging process of this charhing unit, makes corresponding cell of fuel cell keep the fixedly electric power output power to set.
21, mixed electric power device for fuel cell as claimed in claim 19, it is characterized in that: arbitrary electric power that transmits of those fuel cell power supply circuits is higher than in the state of the electric power that this cell of fuel cell exports, this sensing cell is regulated the setting voltage value of corresponding fuel cell power supply circuit output and the setting voltage value of this secondary cell electric power supply circuit output, and this sensing cell selects the charhing unit of this secondary cell electric power supply circuit to stop the charging of this secondary cell, feasible corresponding fuel cell power supply circuit and this secondary cell electric power supply circuit output be output power all, and makes corresponding cell of fuel cell keep the fixedly electric power output power to set.
22, mixed electric power device for fuel cell as claimed in claim 19, it is characterized in that: arbitrary electric power that transmits of those fuel cell power supply circuits equals in the state of the electric power that this cell of fuel cell exports, this sensing cell is regulated the setting voltage value of corresponding fuel cell power supply circuit output and the setting voltage value of this secondary cell electric power supply circuit output, and this sensing cell selects the charhing unit of this secondary cell electric power supply circuit to stop the charging of this secondary cell, makes corresponding fuel cell power supply circuit output power, this secondary cell electric power supply circuit output stops output power and corresponding cell of fuel cell and keeps fixedly electric power output power to set.
23, mixed electric power device for fuel cell as claimed in claim 19 is characterized in that: those fuel battery voltage converting units comprise at least one direct current power booster circuit and at least one direct current power reduction voltage circuit respectively.
24, mixed electric power device for fuel cell as claimed in claim 19, it is characterized in that: this sensing cell further comprises a plurality of sensing components and a microcontroller, those sensing components are electrically connected in respectively in the corresponding fuel cell power supply circuit, and the electrical signal of exporting a correspondence according to the corresponding electric power that the fuel cell power supply circuit transmitted is to this microcontroller, and this sensing cell sees through this microcontroller and regulates the voltage difference between the setting voltage of the setting voltage of this fuel cell power supply circuit output and this secondary cell electric power supply circuit output and control the charging that this charhing unit carries out this secondary battery cell.
25, mixed electric power device for fuel cell as claimed in claim 19 is characterized in that: this sensing cell selects to be arranged at the high potential place of those fuel cell power supply circuits and the arbitrary position in the electronegative potential place.
26, mixed electric power device for fuel cell as claimed in claim 19, it is characterized in that: this sensing cell further comprises a sensing component and a microcontroller, those sensing components are electrically connected in each corresponding fuel cell power supply circuit respectively, and the electrical signal of exporting a correspondence according to the corresponding electric power that the fuel cell power supply circuit transmitted respectively is to this microcontroller, and this sensing cell sees through this microcontroller and regulates the voltage difference between pairing fuel cell power supply circuit output and this secondary cell electric power supply circuit output and control the charging that this charhing unit carries out this secondary battery cell.
27, mixed electric power device for fuel cell as claimed in claim 19, it is characterized in that: this sensing cell comprises a sensing component, this sensing component is selected from the assembly in circuit, a Hall subassembly and the sensor chip that a differential amplifier forms, and, export the electrical signal of a correspondence according to current value, magnitude of voltage or electrical power value that this fuel cell power supply circuit is exported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100000576A CN101478049A (en) | 2008-01-03 | 2008-01-03 | Mixed electric power device for fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100000576A CN101478049A (en) | 2008-01-03 | 2008-01-03 | Mixed electric power device for fuel cell |
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| CN101478049A true CN101478049A (en) | 2009-07-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951004A (en) * | 2012-11-20 | 2013-03-06 | 北京慧峰聚能科技有限公司 | Hybrid power system of fuel cell forklift |
| CN105280990A (en) * | 2015-04-15 | 2016-01-27 | 成都国佳电气工程有限公司 | Kilowatt-scale fuel cell/lithium-ion cell hybrid power device and energy management method thereof |
-
2008
- 2008-01-03 CN CNA2008100000576A patent/CN101478049A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951004A (en) * | 2012-11-20 | 2013-03-06 | 北京慧峰聚能科技有限公司 | Hybrid power system of fuel cell forklift |
| CN105280990A (en) * | 2015-04-15 | 2016-01-27 | 成都国佳电气工程有限公司 | Kilowatt-scale fuel cell/lithium-ion cell hybrid power device and energy management method thereof |
| CN105280990B (en) * | 2015-04-15 | 2018-05-08 | 成都国佳电气工程有限公司 | Multikilowatt fuel cell/lithium ion battery hybrid power device and its energy management method |
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