CN100452504C - Fuel cell system - Google Patents
Fuel cell system Download PDFInfo
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- CN100452504C CN100452504C CNB200610068027XA CN200610068027A CN100452504C CN 100452504 C CN100452504 C CN 100452504C CN B200610068027X A CNB200610068027X A CN B200610068027XA CN 200610068027 A CN200610068027 A CN 200610068027A CN 100452504 C CN100452504 C CN 100452504C
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- fuel cell
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- secondary cell
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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
- Y02E60/10—Energy storage using batteries
Abstract
A fuel cell system of the present invention includes a fuel cell stack, a fuel feeder that provides the fuel cell stack with fuel, a fuel cell DC/DC converter that converts the output voltage of the fuel cell stack to a predetermined voltage and then outputs it, a rechargeable battery that is an electric storage device, and a rechargeable battery DC/DC converter that converts the output voltage of the rechargeable battery to a predetermined voltage and then outputs it. The setting of a voltage at a node at which an output end of the fuel cell DC/DC converter and an output end of the rechargeable battery DC/DC converter are connected together is changeable, and the rechargeable battery is detachable. As a result, the fuel cell system of the present invention has high versatility.
Description
Technical field
The present invention relates to a kind of fuel cell system of parallel system of act as a fuel battery and electrical storage device.
Background technology
In recent years, develop the fuel cell system (for example, opening the 2004-71260 communique) of the parallel system of various act as a fuel battery and electrical storage devices with reference to the spy.At this, Fig. 6 shows a configuration example of fuel cell system in the past.
Fuel cell system in the past shown in Figure 6, be the parallel system of fuel cell and electrical storage device, possess: fuel battery 1, fuel supplying part 2, prevent that as secondary cell 3, the adverse current of electrical storage device diode D1, secondary cell are with DC/DC transducer 5 ' and system's lead-out terminal 7.System's lead-out terminal 7 is dc output end that are made of positive terminal and negative terminal.
Be connected with direct-flow input end of electric equipment (load) by system's lead-out terminal 7, power to electric equipment from the fuel cell system in the past shown in Fig. 6.Usually, be complementary with electric equipment and determine fuel battery 1, fuel supplying part 2, secondary cell 3, and secondary cell with DC/DC transducer 5 ' each specification, be output from system's lead-out terminal 7 with the electric voltage that is complementary.For example, at electric direct-flow input end is the 16V direct-flow input end period of the day from 11 p.m. to 1 a.m, decision fuel battery 1, fuel supplying part 2, secondary cell 3, and secondary cell with DC/DC transducer 5 ' each specification so that approximately be 16V from the voltage of system's lead-out terminal 7 outputs.
Thus, fuel cell system in the past shown in Figure 6, the specification that has become with specific electric equipment (for example, having the electric equipment of 16V direct-flow input end) specialization, versatility is not high.
At this, though consider to change the specification of secondary cell 3 as the secondary cell 3 of fuel cell system in the past shown in Figure 6 by ensconcing secondary cell in the electric equipment (load) that is connected with system lead-out terminal 7 in utilizing, but in this case, need on electric equipment, reset dc output end of output voltage of output secondary cell, exist the cost of electric equipment to improve or can not correspondence in existing electric equipment etc. problem.
Summary of the invention
The objective of the invention is to, provide a kind of versatility high fuel cell system.
To achieve the above object, relevant fuel cell system of the present invention possesses:
Fuel cell;
Fuel supplying part to described fuel cell fueling;
The output voltage of described fuel cell is converted to the voltage of regulation and the 1DC/DC transducer of output;
Electrical storage device; And
The output voltage of described electrical storage device is converted to the voltage of regulation and the 2DC/DC transducer of output, wherein,
Can change the setting of the tie point voltage between the output of the output of 1DC/DC transducer and 2DC/DC transducer,
Described electrical storage device loads and unloads freely,
Described 1DC/DC transducer is to change step-up DC/DC transducer that output voltage is set and the upper limit of step-up ratio is set, and described 2DC/DC transducer is to change the DC/DC transducer that output voltage is set,
Will be than the power output of described fuel cell the also little described fuel cell of the output voltage values of described fuel cell during for maximum output voltage values, with the multiplication value that the upper limit of the step-up ratio of described 1DC/DC transducer multiplies each other and obtains, be set at output voltage set point less than described 1DC/DC transducer.
As described electrical storage device, for example can enumerate secondary cell or double charge layer capacitor etc.
According to described formation, can change the setting of the tie point voltage between the output of the output of 1DC/DC transducer and 2DC/DC transducer, the electrical storage device loading and unloading freely therefore can be according to electric equipment (load) change from the setting of the voltage of fuel cell system output and the kind of electrical storage device.Thus can be corresponding with various electric equipments, the versatility height.Thereby the worry that the life-span that can eliminate described fuel cell reduces.
In addition, in described each fuel cell system that constitutes, also can possess a plurality of systems lead-out terminal, this a plurality of systems lead-out terminal is exported the tie point voltage between the output of the output of 1DC/DC transducer and 2DC/DC transducer to the outside, can also possess many to the electrical storage device terminal for connecting.
According to described formation, though for the shape of direct-flow input end of electric equipment (load) in the electric equipment of each specification different situation or the shape of electrical storage device different situations also can both be corresponding in the electrical storage device of each specification.
In addition, in described each fuel cell system that constitutes, can also possess the electrical storage device charging part, this electrical storage device charging part is utilized the tie point voltage between the output of the output of 1DC/DC transducer and 2DC/DC transducer and described electrical storage device is charged.
Therefore according to described formation, electrical storage device loads and unloads freely, by the electrical storage device charging part electrical storage device is charged, and fuel cell system can be used as the charger of electrical storage device.
In addition, in described each fuel cell system that constitutes, also can change at least one of higher limit of the lowest high-current value of 2DC/DC transducer and step-up ratio according to the kind of described electrical storage device.Thus, the protection of fuel cell system is further sought in the protection that can seek described electrical storage device.
Description of drawings
Fig. 1 is the figure of a configuration example of the relevant fuel cell system of the present invention of expression.
Fig. 2 is the figure of the concrete example of the relevant fuel cell system of the present invention of expression.
Fig. 3 is the figure of the concrete example of the relevant fuel cell system of the present invention of expression.
Fig. 4 is the figure of the concrete example of the relevant fuel cell system of the present invention of expression.
Fig. 5 is the figure of the concrete example of the relevant fuel cell system of the present invention of expression.
Fig. 6 is the figure that represents the concrete example of fuel cell system in the past.
Fig. 7 is the I-E characteristic of expression fuel battery and the figure of electric current-power characteristic.
Fig. 8 A is the figure of the behaviour in service of expression when relevant fuel cell system of the present invention is used as the power supply of notebook PC.
Fig. 8 B be expression with the battery of the secondary cell of relevant fuel cell system of the present invention connection and notebook PC between the figure of replacement situation.
Fig. 9 A is when being illustrated in editing operating, the figure of the behaviour in service when relevant fuel cell system of the present invention is used as the power supply of field camera.
Fig. 9 B is expression with the secondary cell of relevant fuel cell system of the present invention connection and is installed in the figure of the replacement situation between the battery on the field camera.
Embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described.Fig. 1 represents a configuration example of relevant fuel cell system of the present invention.In addition, in Fig. 1, add identical symbol for the part identical with Fig. 6.
Fuel cell system relevant of the present invention shown in Figure 1, be the parallel system of fuel cell and electrical storage device, possess: fuel battery 1, fuel supplying part 2, as the secondary cell 3 of electrical storage device, fuel cell with DC/DC transducer 4,, secondary cell is with DC/DC transducer 5, charging circuit for secondary battery 6 and system's lead-out terminal 7.System's lead-out terminal 7 is dc output end that are made of positive terminal and negative terminal.
Be connected with direct-flow input end of electric equipment (load) by system's lead-out terminal 7, power to electric equipment from fuel cell system relevant of the present invention shown in Figure 1.Fuel cell will be the direct voltage and the output of setting (PV1) from the DC voltage rising of fuel battery 1 output with DC/DC transducer 4, and secondary cell will be the direct voltage and the output of setting (PV2) from the DC voltage rising of secondary cell 3 outputs with DC/DC transducer 5.But has the upper limit with the step-up ratio of DC/DC transducer 4 for fuel cell, too small and will multiply each other from the higher limit of the direct voltage of fuel battery 1 output and step-up ratio when also not reaching setting (PV1) from the direct voltage of fuel battery 1 output, the output voltage of fuel cell usefulness DC/DC transducer 4 is littler than setting (PV1).
In addition, fuel cell is set to greater than the output voltage values (PV2) of secondary cell with DC/DC transducer 5 with the output voltage values (PV1) of DC/DC transducer 4.Thus, at the exportable power of fuel battery 1 is that the desired power of electric equipment is when above, have only fuel cell to be fed in the electric equipment via system's lead-out terminal 7 with the power output of DC/DC transducer 4, at the exportable power of fuel battery 1 during less than the desired power of electric equipment, fuel cell reaches the upper limit with the step-up ratio of DC/DC transducer 4, fuel cell drops to the output voltage values (PV2) of secondary cell with DC/DC transducer 5 with the output voltage of DC/DC transducer 4, and fuel cell is fed in the electric equipment via system's lead-out terminal 7 with the power output of DC/DC transducer 4 and the secondary cell power output with DC/DC transducer 5.That is, at the exportable power of fuel battery 1 during less than the desired power of electric equipment, secondary cell 3 power (the exportable power of the desired power-fuel battery 1 of=electric equipment) of covering the shortage.
Charging circuit for secondary battery 6, the dump power (the exportable power-electric equipment desired power of=fuel battery 1) of the exportable power that utilizes fuel battery 1 during greater than the desired power of electric equipment or the power output of the fuel battery 1 when not working as the electric equipment of load come secondary cell 3 is charged.
In addition, fuel cell system relevant of the present invention shown in Figure 1 can change from the setting of the voltage of system's lead-out terminal 7 outputs.Promptly, fuel cell is DC/DC transducers of the upper limit setting of variable output voltage setting and step-up ratio with DC/DC transducer 4, secondary cell is DC/DC transducers that variable output voltage is set with DC/DC transducer 5, and fuel cell system relevant of the present invention shown in Figure 1 has and is used for changing that fuel cell is set with the output voltage of DC/DC transducer 4 and mechanism (not shown at Fig. 1) is changed in the setting that the upper limit is set and secondary cell is set with the output voltage of DC/DC transducer 5 of step-up ratio.Further, fuel cell system relevant of the present invention shown in Figure 1 has makes secondary cell 3 loading and unloading structure freely, can use various secondary cells to secondary cell 3.Fuel cell system relevant of the present invention shown in Figure 1 can be according to electric equipment (load) change from the setting of the voltage of system's lead-out terminal output and the kind of secondary cell, therefore can be corresponding with various electric equipments, and the versatility height.In addition, can utilize the power output of the fuel battery 1 when not working and charge by 6 pairs of secondary cells 3 of charging circuit for secondary battery as the electric equipment of load, secondary cell 3 can load and unload freely, therefore fuel cell system relevant of the present invention shown in Figure 1 charging gas equipment as secondary cell 3 can be used.
Below, 2 kinds the fuel cell system that is set at 16V and 12V with output voltage is an example, and the concrete example of relevant fuel cell system of the present invention shown in Figure 1 is described.The concrete example of relevant fuel cell system of the present invention shown in Figure 1 shown in Figure 2.In addition, in Fig. 2, add identical symbol and omit detailed explanation for the part identical with Fig. 1.
Fuel cell system shown in Figure 2 possesses voltage setting diverter switch 9 and is used as changing output voltage setting and the upper limit setting of step-up ratio and the setting change mechanism of the output voltage setting that secondary cell is used DC/DC transducer 5 of fuel cell with DC/DC transducer 4.In addition, fuel cell system shown in Figure 2 possesses secondary cell splicing ear 8A and 8B.And fuel cell system shown in Figure 2 possesses a plurality of lead-out terminal 7A of system and the 7B that is equivalent to system's lead-out terminal 7.
Fuel cell is connected with the positive terminal of lead-out terminal 7A of system and 7B respectively with the cathode output end of DC/DC transducer 4, the cathode output end that secondary cell is used DC/DC transducer 5, the electrode input end that reaches charging circuit for secondary battery 6.In addition, fuel cell is connected with the negative terminal of lead-out terminal 7A of system and 7B respectively with the cathode output end of DC/DC transducer 4, the cathode output end that secondary cell is used DC/DC transducer 5, the negative input that reaches charging circuit for secondary battery 6.In addition, the lead-out terminal 7A of system is the shape that can be connected with the 16V input terminal of electric equipment, and the lead-out terminal 7B of system is the shape that can be connected with the 12V input terminal of electric equipment.In addition, secondary cell splicing ear 8A is the shape that can be connected with the secondary cell with the matched specification of situation that fuel cell system is set at 16V, and secondary cell splicing ear 8B is the shape that can be connected with the secondary cell with the matched specification of situation that fuel cell system is set at 12V.
Voltage is set diverter switch 9 and is operated switching 16V setting and 12V setting according to the user.
Use and the secondary cell that fuel cell system is set at the matched specification of situation of 16V as secondary cell 3, and under the state that secondary cell 3 has been connected with secondary cell splicing ear 8A, voltage is set diverter switch 9 and is operated according to the user and set 16V.When setting 16V, fuel cell is set at output voltage 16V and the upper limit of step-up ratio is set at the value that 16V sets usefulness according to the indication of setting diverter switch 9 from voltage with DC/DC transducer 4, secondary cell with DC/DC transducer 5 according to from the indication of voltage setting diverter switch 9 and output voltage is set at 15.5V.And, the 16V input terminal of electric equipment is connected with the lead-out terminal 7A of system.
On the other hand, use and the secondary cell that fuel cell system is set at the matched specification of situation of 12V as secondary cell 3, and under the state that secondary cell 3 has been connected with secondary cell splicing ear 8B, voltage is set diverter switch 9 and is operated according to the user and set 12V.When setting 12V, fuel cell is set at output voltage 12V and the upper limit of step-up ratio is set at the value that 12V sets usefulness according to the indication of setting diverter switch 9 from voltage with DC/DC transducer 4, and secondary cell is set at 11.5V according to the indication from voltage setting diverter switch 9 with output voltage with DC/DC transducer 5.And, the 12V input terminal of electric equipment is connected with the lead-out terminal 7B of system.
In addition, when the 16V of the electric equipment input terminal and the 12V input terminal of electric equipment are identical shape, can make lead-out terminal 7A of system and commonization of the lead-out terminal 7B of system, when being identical shape, can make secondary cell splicing ear 8A and commonization of secondary cell splicing ear 8B with the secondary cell of the matched specification of situation that fuel cell system is set at 16V and with the secondary cell of the matched specification of situation that fuel cell system is set at 12V.
Then, another concrete example of relevant fuel cell system of the present invention shown in Figure 1 shown in Figure 3.In addition, in Fig. 3, add identical symbol and omit detailed explanation for the part identical with Fig. 2.
Fuel cell system shown in Figure 3, be with the output voltage values of the secondary cell of the matched specification of situation that fuel cell system is set at 16V and the situation different structure as prerequisite with the output voltage values of the secondary cell of the matched specification of situation that fuel cell system is set at 12V.
Fuel cell system shown in Figure 3 possesses voltage setting control circuit 10 and is used as changing output voltage setting and the upper limit setting of step-up ratio and the setting change mechanism of the output voltage setting that secondary cell is used DC/DC transducer 5 of fuel cell with DC/DC transducer 4.
Voltage setting control circuit 10 switches 16V setting and 12V setting according to the output voltage of secondary cell 3.
Voltage is set control circuit 10 and is detected the output voltage of the secondary cell 3 that is connected with secondary cell splicing ear 8A and set 16V.When setting 16V, fuel cell is set at output voltage 16V and the upper limit of step-up ratio is set at the value that 16V sets usefulness according to the indication of setting control circuit 10 from voltage with DC/DC transducer 4, and secondary cell is set at 15.5V according to the indication from voltage setting control circuit 10 with output voltage with DC/DC transducer 5.And, the 16V input terminal of electric equipment is connected with the lead-out terminal 7A of system.
On the other hand, voltage setting control circuit 10 detects the output voltage of the secondary cell 3 that is connected with secondary cell splicing ear 8B and sets 12V.When setting 12V, fuel cell is set at output voltage 12V and the upper limit of step-up ratio is set at the value that 12V sets usefulness according to the indication of setting control circuit 10 from voltage with DC/DC transducer 4, and secondary cell is set at 11.5V according to the indication from voltage setting control circuit 10 with output voltage with DC/DC transducer 5.And, the 12V input terminal of electric equipment is connected with the lead-out terminal 7B of system.
In addition, when the 16V of the electric equipment input terminal and the 12V input terminal of electric equipment are identical shape, can make lead-out terminal 7A of system and commonization of the lead-out terminal 7B of system, when being identical shape, can make secondary cell splicing ear 8A and commonization of secondary cell splicing ear 8B with the secondary cell of the matched specification of situation that fuel cell system is set at 16V and with the secondary cell of the matched specification of situation that fuel cell system is set at 12V.
Then, another concrete example of relevant fuel cell system of the present invention shown in Figure 1 shown in Figure 4.In addition, in Fig. 4, add identical symbol and omit detailed explanation for the part identical with Fig. 2.
Fuel cell system shown in Figure 4 possesses voltage and sets control circuit 10 ' be used as changing fuel cell is set with the output voltage of DC/DC transducer 4 and the setting change mechanism that the upper limit is set and secondary cell is set with the output voltage of DC/DC transducer 5 of step-up ratio.
Fuel cell system shown in Figure 4 by main part 11,1 accessory cables 12 and 2 cable accessory cables 13 constitute.Main part 11 has: fuel battery 1, fuel supplying part 2, secondary cell 3, fuel cell are set control circuit 10 ' and connector C1 with DC/DC transducer 4, secondary cell with DC/DC transducer 5, charging circuit for secondary battery 6, secondary cell splicing ear 8A and 8B, voltage.Secondary cell 3 relative main part 11 loading and unloading freely.The 1st accessory cables 12 has connector C2A and the lead-out terminal 7A of system, and the 2nd accessory cables 13 has connector C2B and the lead-out terminal 7B of system.
Connector C1 has: No. 1 conducting terminal, No. 2 conducting terminals, and No. 3 conducting terminals.No. 1 conducting terminal of connector C1, with fuel cell with the cathode output end of DC/DC transducer 4, secondary cell with the cathode output end of DC/DC transducer 5, and the electrode input end of charging circuit for secondary battery 6 be connected.No. 2 conducting terminals of connector C1, with fuel cell with the cathode output end of DC/DC transducer 4, secondary cell with the cathode output end of DC/DC transducer 5, and the negative input of charging circuit for secondary battery 6 be connected.No. 3 conducting terminals of connector C1 and voltage are set control circuit 10 ' be connected.
Connector C2A has: No. 1 conducting terminal, No. 2 conducting terminals, and No. 3 conducting terminals.No. 1 conducting terminal of connector C2A is connected with the positive terminal of the lead-out terminal 7A of system, and No. 2 conducting terminals of connector C2A are connected with the negative terminal of the lead-out terminal 7A of system, and No. 3 conducting terminals of connector C2A disconnect.
Connector C2B has: No. 1 conducting terminal, No. 2 conducting terminals, and No. 3 conducting terminals.No. 1 conducting terminal of connector C2B is connected with the positive terminal of the lead-out terminal 7B of system, and No. 2 conducting terminals and No. 3 conducting terminals of connector C2B are connected with the negative terminal of the lead-out terminal 7B of system.
Voltage is set control circuit 10 ' according to the current potential of No. 3 conducting terminals of connector C1 and is switched that 16V sets and the 12V setting.That is, voltage setting control circuit 10 ', if No. 3 conducting terminals of connector C1 disconnect then set, if earthing potential is then set as 12V as 16V.
Use and the secondary cell that fuel cell system is set at the matched specification of situation of 16V as secondary cell 3, and secondary cell 3 is connected with secondary cell splicing ear 8A, connector C1 is connected with connector C2A, thereby 1～No. 3 conducting terminal that makes connector C1 respectively with state that 1～No. 3 conducting terminal of connector C2A is electrically connected under, press and set control circuit 10 ' setting 16V.When setting 16V, fuel cell changes electric parallel operation 4 with DC/DC and according to the indication of setting control circuit 10 from voltage output voltage is set at 16V and the upper limit of step-up ratio is set at the value that 16V sets usefulness, secondary cell with DC/DC transducer 5 according to from voltage setting control circuit 10 ' indication output voltage is set at 15.5V.And, the 16V input terminal of electric equipment is connected with the lead-out terminal 7A of system.
On the other hand, use and the secondary cell that fuel cell system is set at the matched specification of situation of 12V as secondary cell 3, and secondary cell 3 is connected with secondary cell splicing ear 8B, connector C1 is connected with connector C2B, thereby 1～No. 3 conducting terminal that makes connector C1 respectively with state that 1～No. 3 conducting terminal of connector C2B is electrically connected under, voltage is set control circuit 10 ' setting 12V.When setting 12V, fuel cell with DC/DC transducer 4 according to set from voltage control circuit 10 ' indication output voltage is set at 12V and the upper limit of step-up ratio is set at the value that 12V sets usefulness, secondary cell with DC/DC transducer 5 according to from voltage setting control circuit 10 ' indication output voltage is set at 11.5V.And, the 12V input terminal of electric equipment is connected with the lead-out terminal 7B of system.
In addition, when being identical shape, can make secondary cell splicing ear 8A and commonization of secondary cell splicing ear 8B with the secondary cell of the matched specification of situation that fuel cell system is set at 16V and with the secondary cell of the matched specification of situation that fuel cell system is set at 12V.
Then, another concrete example of relevant fuel cell system of the present invention shown in Figure 1 shown in Figure 5.In addition, in Fig. 5, add identical symbol and omit detailed explanation for the part identical with Fig. 2.
Fuel cell system shown in Figure 5, be with the situation of the signal (voltage setting signal) set from the relevant voltage of direct-flow input end output of the electric equipment (load) that connects with the lead-out terminal 7A of system or 7B structure as prerequisite, can not be corresponding with existing electric equipment.Therefore, compare with structure shown in Figure 5 and preferably make Fig. 2～structure shown in Figure 4.
Fuel cell system shown in Figure 5 possesses voltage and sets control circuit 10 " is used as changing output voltage setting and the upper limit setting of step-up ratio and the setting change mechanism that secondary cell with the output voltage of DC/DC transducer 5 set of fuel cell with DC/DC transducer 4.
Voltage is set control circuit 10 " according to from the dc output end output of electric equipment (load) and switch to the voltage setting signal of lead-out terminal 7A of system or 7B input that 16V sets and the 12V setting.
Use and the secondary cell that fuel cell system is set at the matched specification of situation of 16V as secondary cell 3, it " setting 16V by the voltage setting signal from direct-flow input end of the electric equipment that is connected with lead-out terminal 7A, and under the state that secondary cell 3 has been connected with secondary cell splicing ear 8A, voltage is set control circuit 10.When setting 16V, fuel cell with DC/DC transducer 4 according to setting control circuit 10 from voltage " indication output voltage is set at 16V and the upper limit of step-up ratio is set at the value that 16V sets usefulness, secondary cell with DC/DC transducer 5 according to from voltage setting control circuit 10 " indication output voltage is set at 15.5V.
On the other hand, use and the secondary cell that fuel cell system is set at the matched specification of situation of 12V as secondary cell 3, it " setting 12V by the voltage setting signal from direct-flow input end of the electric equipment that is connected with lead-out terminal 7B, and under the state that secondary cell 3 has been connected with secondary cell splicing ear 8B, voltage is set control circuit 10.When setting 12V, fuel cell with DC/DC transducer 4 according to setting control circuit 10 from voltage " indication output voltage is set at 12V and the upper limit of step-up ratio is set at the value that 12V sets usefulness, secondary cell with DC/DC transducer 5 according to from voltage setting control circuit 10 " indication output voltage is set at 11.5V.
In addition, when the 16V of the electric equipment input terminal and the 12V input terminal of electric equipment are identical shape, can make lead-out terminal 7A of system and commonization of the lead-out terminal 7B of system, when being identical shape, can make secondary cell splicing ear 8A and commonization of secondary cell splicing ear 8B with the secondary cell of the matched specification of situation that fuel cell system is set at 16V and with the secondary cell of the matched specification of situation that fuel cell system is set at 12V.
Output is set at 2 kinds in the above-described embodiment, but the present invention is not limited thereto, and it also can be more than 3 kinds that output is set.In addition, in the above-described embodiment, used secondary cell, but replaced secondary cell and also can use other electrical storage devices (for example double charge layer capacitor etc.) as electrical storage device.
In the above-described embodiment, fuel supplying part 2 is supplied with the fuel of ormal weight termly to fuel battery 1, so the I-E characteristic of fuel battery 1 and electric current-power characteristic become as shown in Figure 7.T among Fig. 7
I-V, T
I-PRepresent the output current-output voltage characteristic curve of fuel battery 1, the output current-characteristics of output power curve of fuel battery 1 respectively.
Consider the characteristic of such fuel battery 1, it is relatively good with the upper limit of the step-up ratio of DC/DC transducer 4 to set fuel cell.Promptly, preferably set the upper limit of fuel cell, also do not reach setting (PV1) even make the output voltage of fuel battery 1 of galvanic areas (unstable region) that will be bigger and fuel cell multiply each other with the upper limit of the step-up ratio of DC/DC transducer 4 than Ipmax with the step-up ratio of DC/DC transducer 4.
In addition; further seek the viewpoint of the protection of fuel cell system from the protection of seeking electrical storage device; in the above-described embodiment, preferably can according to as the kind of the secondary cell 3 of electrical storage device by automatic setting or manually set and change secondary cell with at least one of the higher limit of the lowest high-current value of DC/DC transducer 5 and step-up ratio.No matter thus, can set maximum current and maximum power as the secondary cell 3 of electrical storage device according to the kind of secondary cell 3, be which type of secondary cell 3 also can suitably be protected therefore.When automatic setting, the mechanism with (also can the receive only) information of giving and accepting as the secondary cell 3 of electrical storage device is set, get final product according to this information-change secondary cell at least one with the higher limit of the lowest high-current value of DC/DC transducer 5 and step-up ratio.On the other hand, when manually setting, operation by the user is set makes and set the configuration switch that switches, this configuration switch change secondary cell gets final product with at least one of the higher limit of the lowest high-current value of DC/DC transducer 5 and step-up ratio.
Below, the occupation mode example of relevant fuel cell system of the present invention is described.
At first, to relevant fuel cell system of the present invention as the power supply of notebook PC and situation about using describe.
Fig. 8 A is the figure of the behaviour in service of expression when relevant fuel cell system of the present invention is used as the power supply of notebook PC.Relevant fuel cell system of the present invention 101 is set on the desk 103 of meeting room etc.The lead-out terminal 7A of system of relevant fuel cell system of the present invention 101 or 7B are (not shown in figure gA, with reference to Fig. 2～Fig. 5) be connected with the power input terminal (not shown) of notebook PC102, the secondary cell 3 of the kind identical with battery in being installed in notebook PC102 be connected the secondary cell splicing ear gA of relevant fuel cell system of the present invention or 8B (not shown in figure gA, with reference on Fig. 2～Fig. 5).Set diverter switch 9 (with reference to Fig. 2) or set control circuit 10,10 ' or 10 " (, and set the output voltage of relevant fuel cell system 101 of the present invention by user's operating voltage with reference to the control action of Fig. 3～Fig. 5) by voltage.In above-mentioned behaviour in service, relevant fuel cell system of the present invention is used as the power supply of notebook PC, therefore can with under the identical state of the situation that is connected with the AC adapter on the notebook PC, use notebook PC.Thereby, do not worry the battery allowance of notebook PC, can prolong the service time of notebook PC.
On the other hand, use under the situation of notebook PC102 in the place that is not provided with another place of fuel cell system 101 in the present invention or does not have an AC power supplies, as shown in Figure 8, owing to can will replace with the battery (not shown) of notebook PC102 with the secondary cell 3 that relevant fuel cell system 101 of the present invention connects, maybe secondary cell 3 can be led out as accessory power supply, therefore can realize the long use of notebook PC.
Then, to relevant fuel cell system of the present invention as the power supply of field camera and situation about using describe.
Field camera, usually when photography with battery as power supply, when editing operating, the AC adapter is used as power supply.The general charging gas equipment (AC adapter) that field camera is used can not charge to battery while carrying out editing operating.
Fig. 9 A is when being illustrated in editing operating, with relevant fuel cell system of the present invention as the power supply of field camera and the figure of the behaviour in service when using.The lead-out terminal 7A or the 7B of relevant fuel cell system of the present invention 201 are (not shown in Fig. 9, with reference to Fig. 2～Fig. 5) be connected with the power input terminal (not shown) of field camera 202 via feed cable 203, the secondary cell 3 of the kind identical or the battery itself that is installed in field camera 202 with the battery that is installed in field camera 202 via the secondary cell splicing ear 8A of feed cable 204 and relevant fuel cell system of the present invention or 8B (not shown in Fig. 9 A, with reference to Fig. 2～Fig. 5) connect.In addition, also can be about fuel cell system 201 of the present invention and the field camera 202 direct-connected mode via feed cable 203 not, also can be about fuel cell system 201 of the present invention and the secondary cell 3 direct-connected mode via feed cable 204 not.Set diverter switch 9 (with reference to Fig. 2) or set control circuit 10,10 ' or 10 " (, and set the output voltage of relevant fuel cell system 201 of the present invention by user's operating voltage with reference to the control action of Fig. 3～Fig. 5) by voltage.In above-mentioned behaviour in service, the exportable power of the fuel battery that is possessed at relevant fuel cell system 201 of the present invention is during greater than field camera 202 desired power, carry out the charging of secondary cell 3, therefore the general charging gas equipment of using with field camera (AC adapter) is different, while can carry out editing operating battery is charged.
Owing to while carrying out editing operating battery is charged as described above, therefore after finishing, can at once battery be used as power supply and photograph editing operating.
After editing operating finishes, shown in Fig. 9 B, the secondary cell 3 that can connect with relevant fuel cell system of the present invention 201 is replaced and be photographed with being installed in battery (not shown) in the field camera 202, maybe secondary cell 3 can be led out as accessory power supply.
Claims (6)
1, a kind of fuel cell system possesses:
Fuel cell;
Fuel supplying part to described fuel cell fueling;
The output voltage of described fuel cell is converted to the voltage of regulation and the 1DC/DC transducer of output;
Electrical storage device; And
The output voltage of described electrical storage device is converted to the voltage of regulation and the 2DC/DC transducer of output, wherein,
Can change the setting of the tie point voltage between the output of the output of 1DC/DC transducer and 2DC/DC transducer,
Described electrical storage device loads and unloads freely,
Described 1DC/DC transducer is to change step-up DC/DC transducer that output voltage is set and the upper limit of step-up ratio is set, and described 2DC/DC transducer is to change the DC/DC transducer that output voltage is set,
Will be than the power output of described fuel cell the also little described fuel cell of the output voltage values of described fuel cell during for maximum output voltage values, with the multiplication value that the upper limit of the step-up ratio of described 1DC/DC transducer multiplies each other and obtains, be set at output voltage set point less than described 1DC/DC transducer.
2, fuel cell system according to claim 1 is characterized in that,
Described electrical storage device is a secondary cell.
3, fuel cell system according to claim 1 is characterized in that,
Described electrical storage device is a double charge layer capacitor.
4, fuel cell system according to claim 1 is characterized in that,
Possess a plurality of systems lead-out terminal, this a plurality of systems lead-out terminal is exported the tie point voltage between the output of the output of 1DC/DC transducer and 2DC/DC transducer to the outside,
Possess many to the electrical storage device terminal for connecting.
5, fuel cell system according to claim 1 is characterized in that,
Possess the electrical storage device charging part, this electrical storage device charging part is utilized the tie point voltage between the output of the output of 1DC/DC transducer and 2DC/DC transducer and described electrical storage device is charged.
6, want 1 described fuel cell system according to right, it is characterized in that,
Change at least one of higher limit of the lowest high-current value of 2DC/DC transducer and step-up ratio according to the kind of described electrical storage device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005097857 | 2005-03-30 | ||
| JP2005097857 | 2005-03-30 | ||
| JP2006065470 | 2006-03-10 |
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| Publication Number | Publication Date |
|---|---|
| CN1841824A CN1841824A (en) | 2006-10-04 |
| CN100452504C true CN100452504C (en) | 2009-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610068027XA Expired - Fee Related CN100452504C (en) | 2005-03-30 | 2006-03-23 | Fuel cell system |
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| CN (1) | CN100452504C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166244A (en) * | 2011-12-19 | 2013-06-19 | 联想(北京)有限公司 | Distributed power supply system and method |
| TWI705641B (en) | 2018-09-06 | 2020-09-21 | 財團法人工業技術研究院 | Power supply device, flying tool using same and power supply method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6656618B2 (en) * | 1998-06-25 | 2003-12-02 | Toyota Jidosha Kabushiki Kaisha | Fuel cells system and method of controlling cells |
| JP2004071260A (en) * | 2002-08-02 | 2004-03-04 | Toshiba Corp | Fuel cell device |
| US20040136211A1 (en) * | 2003-01-10 | 2004-07-15 | Nissan Motor Co., Ltd. | Power source device for electric motor |
-
2006
- 2006-03-23 CN CNB200610068027XA patent/CN100452504C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6656618B2 (en) * | 1998-06-25 | 2003-12-02 | Toyota Jidosha Kabushiki Kaisha | Fuel cells system and method of controlling cells |
| JP2004071260A (en) * | 2002-08-02 | 2004-03-04 | Toshiba Corp | Fuel cell device |
| US20040136211A1 (en) * | 2003-01-10 | 2004-07-15 | Nissan Motor Co., Ltd. | Power source device for electric motor |
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| CN1841824A (en) | 2006-10-04 |
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