CN105186602A - Power supply system output controlling method, device and system - Google Patents
Power supply system output controlling method, device and system Download PDFInfo
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- CN105186602A CN105186602A CN201510501997.3A CN201510501997A CN105186602A CN 105186602 A CN105186602 A CN 105186602A CN 201510501997 A CN201510501997 A CN 201510501997A CN 105186602 A CN105186602 A CN 105186602A
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- 238000012360 testing method Methods 0.000 claims description 19
- 230000001276 controlling effect Effects 0.000 claims description 15
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- 238000010168 coupling process Methods 0.000 claims description 11
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
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- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention discloses a power supply system output controlling method, device and system. The method comprises the steps that in a preset unit of time, whether the voltage of at least one battery in a fuel battery stack is below a preset threshold value is detected; if the detection result is yes, the voltage of the minimum battery in the fuel battery stack is used to adjust the first output power of the fuel battery stack, so as to acquire second output power, wherein the second output power is less than the first output power; whether an auxiliary power supply of a power supply system carries out over rate discharge is judged; and if the judgement result is no, the fuel battery stack is repaired, and the second output power is adjusted to the first output power. According to the invention, the technical problem of power interruption, which is caused by insufficient power supply of a fuel battery system and persistent voltage declining of batteries in the fuel battery stack, is solved.
Description
Technical field
The present invention relates to electrical applications technical field, in particular to a kind of method, the Apparatus and system that control electric power system and export.
Background technology
In existing electric power system, fuel cell is a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) chemical energy be stored in fuel and oxidant being converted into electric energy, due to the restriction not by Carnot cycle, the direct generation of electricity efficiency of fuel cell can up to more than 45%, there is the features such as environmental friendliness, energy conversion efficiency is high, the life-span is long, there is application prospect widely in fields such as Aero-Space, submarine, electric motor car, power station, mobile device, residential households.
In the fuel cell system belonging to fuel cell, in the start of this fuel cell system, operation, shutdown process, the battery pile be generally made up of multiple fuel cell and the booster battery of internal system export electric energy to load jointly, and battery pile and storage battery carry out work according to system-level control strategy in the process.General categories adopts two kinds of methods to control: the first, the instruction of fuel battery part receiving system level, exports electric energy with constant power to load; Storage battery is as supplementary energy, and the power fluctuation of load is supplied by storage battery as buffering/consumes; The second, fuel cell and the instruction of storage battery receiving system level export electric energy all in a dynamic way, i.e. P (load)=P (fuel cell)+P (storage battery), under P (load) stable state, P (fuel cell) and P (storage battery) is shifting relation, that is, when P (fuel cell) reduces, the power section that P (fuel cell) reduces is supplemented by P (storage battery).
Concrete, in the related, Fig. 1 is the structure chart being judged load power demand P disclosed in prior art by system, as shown in Figure 1, judges the power P required for load by system, and then controls fuel cell output power P by power stage control unit
1, then the power P born of storage battery
2for: | P-P
1|=P
2if P occurs to go up or decline, then P in t
1be adjusted to the bearing power of t-Δ t, unnecessary or insufficient section still has storage battery P
2bear.Fig. 2 is that control that prior art provides is powered the control logic figure exported, wherein, and P
fcfor fuel cell output power, P
outfor bearing power, P
batfor storage battery power, T is the time, and n is Native digits amount, and wherein, as shown in Figure 2, time from T (n) time period, fuel cell power stage controls fuel supply, that is, based on the system mode of a upper time period T (n-1): P
out(n-1)-P
bat(n-1) P is obtained
fc(n), and the real-time average power of bearing power: P
outn (), further according to " Wbat=[P
out(n)-P
fc(n)] * Tmax (n) " determine Tmax (n), now judge P
outn whether () be in 1.2P
fc(n)>=P
out(n)>=0.8P
fcn (), if the determination result is YES, then judges whether T (n) is greater than Tmax (n), if then enter the time period of T (n+1); If judged result is no, then judge whether T (n) is greater than Tmin (n), if then enter the time period of next T (n+1).Here when judging that T (n) is less than Tmax (n), or when T (n) is less than Tmin (n), then P is redefined
out(n).
As from the foregoing, in the prior art, only considered bearing power and change the change of the coupling operational between internal system fuel cell and storage battery caused, this situation is only in stable state output state for fuel cell pack, but, the cascade that fuel cell pack is made up of more piece monocell forms, if the phenomenon of the joint monocell in this fuel cell pack or multiple monocell generation hydraulic performance decline, namely battery pile is in instability status, storage battery will promote power output, if but the batteries voltage of fuel cell pack continues to decline, then will cause storage battery cannot replenish lost power, and then finally there is the accident of power breakdown in fuel cell system generation electricity shortage.
Decline for the above-mentioned batteries voltage keeps owing to occurring in fuel cell pack, cause fuel cell system generation electricity shortage to cause the problem of power breakdown, not yet propose effective solution at present.
Summary of the invention
Embodiments provide a kind of method, the Apparatus and system that control electric power system and export, decline with the batteries voltage keeps at least solved owing to occurring in fuel cell pack, cause fuel cell system generation electricity shortage to cause the technical problem of power breakdown.
According to an aspect of the embodiment of the present invention, provide a kind of method controlling electric power system and export, comprising: within the default unit interval, whether detect the voltage of at least one batteries in fuel cell pack lower than predetermined threshold value; When the test results is yes, with the first power output of the minimum economize on electricity pressure fuel metering battery pile in fuel cell pack, obtain the second power output, the second power output is less than the first power output; Judge whether the accessory power supply of electric power system crosses multiplying power discharging; When judged result is no, repairs fuel cell pack, and the second power output is adjusted to the first power output.
According to the another aspect of the embodiment of the present invention, additionally provide a kind of device controlling electric power system and export, comprising: first detection module, within the default unit interval, whether detect the voltage of at least one batteries in fuel cell pack lower than predetermined threshold value; First adjustment module, for when the test results is yes, with the first power output of the minimum economize on electricity pressure fuel metering battery pile in fuel cell pack, obtain the second power output, the second power output is less than the first power output; Judge module, for judging whether the accessory power supply of electric power system crosses multiplying power discharging; Repair module, during for being no when judged result, repairing fuel cell pack, and the second power output is adjusted to the first power output.
According to another aspect of the embodiment of the present invention, provide a kind of system controlling electric power system and export, comprise: load, fuel cell pack, the fuel supply control device of corresponding fuel cell pack, accessory power supply, the accessory power supply state monitoring apparatus of corresponding accessory power supply, first power-converting device, second power-converting device and power stage control module, wherein, load, respectively with the first power-converting device, the output electrical connection of fuel cell pack and accessory power supply, for receiving the power output of the alternating current be electrically connected with the first power-converting device, and/or the 3rd power output of the first power output of fuel cell pack output and accessory power supply output, within the default unit interval, whether the fuel supply control device be electrically connected with fuel cell pack detects the voltage of at least one batteries in fuel cell pack lower than predetermined threshold value, when the test results is yes, the second power-converting device be electrically connected with the output of fuel cell pack is according to minimum joint voltage-regulation first power output in fuel cell pack, and obtain the second power output, the second power output is less than the first power output, accessory power supply state monitoring apparatus judges whether accessory power supply crosses multiplying power discharging, when judged result is no, power stage control module repairs fuel cell pack, and by the second power-converting device, the second power output is adjusted to the first power output.
In embodiments of the present invention, by within the default unit interval, whether detect the voltage of at least one batteries in fuel cell pack lower than predetermined threshold value; When the test results is yes, with the first power output of the minimum economize on electricity pressure fuel metering battery pile in fuel cell pack, obtain the second power output, the second power output is less than the first power output; Judge whether the accessory power supply of electric power system crosses multiplying power discharging; When judged result is no, repair fuel cell pack, and the second power output is adjusted to the first power output, reach the object maintaining fuel cell system power stability and export, thus achieve the technique effect avoiding fuel cell system generation electricity shortage to cause power breakdown, and then the batteries voltage keeps solved owing to occurring in fuel cell pack declines, fuel cell system generation electricity shortage is caused to cause the technical problem of power breakdown.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structure chart being judged load power demand P disclosed in prior art by system;
Fig. 2 is that control that prior art provides is powered the control logic figure exported;
Fig. 3 is the schematic flow sheet of the method exported according to the control electric power system of the embodiment of the present invention;
Fig. 4 is the power supply export control policy that the embodiment of the present invention provides;
Fig. 5 is the structural representation of the device exported according to a kind of optional control electric power system of the embodiment of the present invention two;
Fig. 6 is a kind of structural representation controlling the device that electric power system exports provided according to the embodiment of the present invention;
Fig. 7 is the structural representation that the another kind provided according to the embodiment of the present invention controls the device that electric power system exports;
Fig. 8 is the structural representation that another providing according to the embodiment of the present invention controls the device that electric power system exports;
Fig. 9 is the structural representation that another providing according to the embodiment of the present invention controls the device that electric power system exports;
Figure 10 is a kind of structural representation controlling the device that electric power system exports provided according to another embodiment of the present invention; And,
Figure 11 is a kind of structural representation controlling the system that electric power system exports provided according to the embodiment of the present invention.
Embodiment
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in specification of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiment one
Embodiments provide a kind of method controlling electric power system and export, the method is applicable to the electric power system containing fuel cell, wherein, fuel cell is a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) chemical energy be stored in fuel and oxidant being converted into electric energy, due to the restriction not by Carnot cycle, the direct generation of electricity efficiency of this fuel cell can up to more than 45%, there is the features such as environmental friendliness, energy conversion efficiency is high, the life-span is long, there is application prospect widely in fields such as Aero-Space, submarine, electric motor car, power station, mobile device and residential households.With Proton Exchange Membrane Fuel Cells (ProtonExchangemembranefuelcell, be called for short PEMFC) be example, Proton Exchange Membrane Fuel Cells core electricity generation module: pile, this pile is composed in series by several single batteries, and single battery forms sandwich structure by the cooperation of membrane electrode assembly, positive plate and minus plate (or bipolar plates).Wherein the primary clustering of membrane electrode assembly is proton exchange membrane, and positive plate and minus plate are carved with runner, for reacting gas provides transport channel.Fuel hydrogen is distributed in the anode-side of membrane electrode along positive plate runner, electronics and proton is dissociated under the effect of anode catalyst, electronics arrives negative electrode through external circuit, and proton directly arrives negative electrode through membrane electrode assembly, generates water with cathode reaction gas oxygen reaction.The product of this process is electric energy, Re Heshui.Take pile as core, the modules such as electric power system is integrated with power management, heat management, have the feature of gas, electricity, heat, water overall management.Concrete, according to the embodiment of the present invention, provide a kind of embodiment of the method controlling electric power system and export, it should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
Fig. 3 is the schematic flow sheet of the method exported according to the control electric power system of the embodiment of the present invention, and as shown in Figure 3, the method comprises the steps:
Whether step S302, within the default unit interval, detect the voltage of at least one batteries in fuel cell pack lower than predetermined threshold value;
Concrete, in the method that the control electric power system that the embodiment of the present invention provides exports, the fuel supply control device be connected with fuel cell pack in electric power system detects that whether the voltage of at least one batteries in this fuel cell pack is lower than predetermined threshold value, wherein, fuel supply control device detects the current value that this fuel cell pack exports and magnitude of voltage.Wherein, in the method that the control electric power system that the embodiment of the present invention provides exports, the first power output can be denoted as P
1.
Step S304, when the test results is yes, with the first power output of the minimum economize on electricity pressure fuel metering battery pile in fuel cell pack, obtain the second power output, the second power output is less than the first power output;
Here the load in electric power system, after Alternating Current Power Supply breaks down, with default export ratio under the control of fuel cell pack and the accessory power supply power stage control module in electric power system, provides power output to load.Suppose, if the power output needed for load is P, the first power output of fuel cell pack is P
1, then the power output P of accessory power supply
2for: P
2=P-P
1.
Concrete, shut down to prevent electric power system or destroy, power stage control module promotes the output voltage of fuel cell pack, with minimum joint voltage-regulation first power output in fuel cell pack, and the second power output after being adjusted.Wherein, in the method that the control electric power system that the embodiment of the present invention provides exports, the second power output can be denoted as P
1', minimum economize on electricity pressure can be denoted as V
min.
Step S306, judges whether the accessory power supply of electric power system crosses multiplying power discharging;
Wherein, accessory power supply can be the energy storage device of lead acid accumulator, lithium battery, super capacitor class.The embodiment of the present application is described for storage battery, and the method that the control electric power system provided to realize the embodiment of the present application exports is as the criterion, and does not specifically limit.
Step S308, when judged result is no, repairs fuel cell pack, and the second power output is adjusted to the first power output.
Concrete, integrating step S302 is to step S306, when the voltage of at least one batteries in fuel cell pack continues to reduce within the default unit interval, then need storage battery power output to make up the power output of fuel cell pack disappearance, and then storage battery will there will be the phenomenon of multiplying power discharging, in order to ensure storage battery will to be caused to cross multiplying power discharging because of the decline of the voltage of at least one batteries in fuel cell pack, monitor by the running status of battery condition monitoring device to storage battery in electric power system, when not there is multiplying power discharging in storage battery, the power stage being repaired fuel cell pack by the power stage control module in electric power system is recovered, control the second power output P of fuel cell pack
1' return to the first power output P
1, to ensure that electric power system can long-time steady operation, ensure that the power supply reliability of electric power system.
By above-mentioned steps, within the default unit interval, whether detect the voltage of at least one batteries in fuel cell pack lower than predetermined threshold value; When the test results is yes, with the first power output of the minimum economize on electricity pressure fuel metering battery pile in fuel cell pack, obtain the second power output, the second power output is less than the first power output; Judge whether the accessory power supply of electric power system crosses multiplying power discharging; When judged result is no, repair fuel cell pack, and the second power output is adjusted to the first power output, reach the object maintaining fuel cell system power stability and export, thus achieve the technique effect avoiding fuel cell system generation electricity shortage to cause power breakdown, and then the batteries voltage keeps solved owing to occurring in fuel cell pack declines, fuel cell system generation electricity shortage is caused to cause the technical problem of power breakdown.
Optionally, whether detect the voltage of at least one batteries in fuel cell pack in step s 302 lower than before predetermined threshold value, the method that the control electric power system of the embodiment of the present invention exports also comprises:
Step S300, detects the power output of accessory power supply, obtains the 3rd power output;
Step S301, first power output that is coupled and the 3rd power output, obtain the driving power of load in electric power system.
Concrete, still with the first power output of the fuel cell pack mentioned in step S302 to step S308 for P
1, accessory power supply is for storage battery, and the power output of storage battery is P
2, load power demand is P is example, and in step S300 and step S301, the power output of storage battery can be denoted as the 3rd power output P
2, when fuel cell pack and storage battery are stablized load output power, fuel cell pack and storage battery received power output control module export the mode of dynamic instruction, to load output power, that is, and P=P
1+ P
2, P under this stable state, P
1and P
2for shifting relation, if that is, P occurs to go up or decline, then P in t
1be adjusted to the bearing power of t-Δ t, the P that unnecessary or insufficient section is still exported by storage battery
2bear.
Optionally, whether detect the voltage of at least one batteries in fuel cell pack in step s 302 lower than after predetermined threshold value, before judging in step S306 whether the accessory power supply of electric power system crosses multiplying power discharging, the method that the control electric power system of the embodiment of the present invention exports also comprises:
Step S303, when testing result is no, according to the running status of accessory power supply, regulates the export ratio of the first power output and the 3rd power output, obtains the driving power of load.
Wherein, the running status of storage battery at least comprises: battery electric quantity, gas fill rat and the 3rd power output.
Concrete, integrating step 300 and step S301, and step S302 is to step S308, when the fuel supply control device in electric power system detects the voltage of at least one batteries in fuel cell pack not lower than predetermined threshold value, namely, electric power system is in stable state, now according to the battery electric quantity in storage battery, gas fill rat and the 3rd power output P
2, according to export ratio together with the first power output, provide driving power to the load in electric power system dynamically.
Optionally, in step S304, according to minimum joint voltage-regulation first power output of batteries every in fuel cell pack, the step obtaining the second power output comprises:
Step1, according to the minimum economize on electricity pressure of batteries every in fuel cell pack, detects the output current I of fuel cell pack;
Step2, regulate the first power output according to the cell number n in output current I, minimum economize on electricity pressure and fuel cell pack, obtain the second power output, n is natural number, and n is more than or equal to 1.
Concrete, in the method for the control electric power system output of the embodiment of the present invention, the minimum economize on electricity pressure of every batteries can be denoted as V
min, the output current I of fuel cell pack can be obtained by the output current integrating dynamic adjustment fuel cell pack.Wherein, the process of integration can be: V
minowing to being the minimum economize on electricity pressure of every batteries, shut down to prevent electric power system or destroy, therefore the power control module in electric power system controls the output current that the second power converter module reduces fuel cell pack, because output current and economize on electricity press V inversely, thus can by the voltage V of every batteries
minbring up to safe range.
In conjunction with Step1 and Step2, the second power output is denoted as P
1', obtaining the minimum economize on electricity pressure V of every batteries in fuel cell pack
minand after output current I, concrete, according to cell number n and the I in fuel cell pack and V
minproduct, obtain the second power output P
1', can be denoted as: P
1'=I*V
min* n.
Wherein, the minimum economize on electricity pressure in the embodiment of the present application can be the minimum value of cell voltage or the voltage minimum of fuel cell pack in fuel cell pack, and the method that the control electric power system provided to realize the embodiment of the present application exports is as the criterion, and does not specifically limit.
Optionally, in step s 304 when the test results is yes, after the first power output of the minimum economize on electricity pressure fuel metering battery pile in fuel cell pack, the method that the control electric power system of the embodiment of the present invention exports also comprises:
Step S305, according to the second power output and the driving power of load that obtains in advance, the 3rd power output of adjustment accessory power supply, obtains the 4th power output;
Step S307, coupling the 4th power output and the second power output, the driving power of adjusted back loading.
Concrete, the second power output P that in integrating step S304, Step1 and Step2 obtains
1', calculating accumulator is the required power exported now, i.e. the 4th power output, the 4th power output can be denoted as P
2', wherein, because load power demand is known quantity P, then P
2' can be P and P
1' do poor obtaining, that is, P
2'=P-P
1'.Last according to P
1' and P
2' power stage relation (that is, be coupled), provide driving power to load.
Optionally, after judging in step S306 whether accessory power supply crosses multiplying power discharging, the method that the control electric power system of the embodiment of the present invention exports also comprises:
Step S309, when judged result is for being, cuts off the non-core services in load, controls electric power system and enters low power mode of operation.
Concrete, in embodiments of the present invention, because electric power system is for powering to the load, when the systematic electricity deliverability of powering is not enough, this load just can cut-off parts non-core services and the power consumption requirements reducing oneself normally work to meet core business, so just can reduce the requirement of electric power system (i.e. fuel cell system).This pattern is second mode of operation, and in embodiments of the present invention, when storage battery was multiplying power discharging, control load was cut off non-core services by electric power system, and then control electric power system enters low power mode of operation.
As from the foregoing, Fig. 4 is the power supply export control policy that the embodiment of the present invention provides, and specifically as shown in Figure 4, in the method that the control electric power system provided in conjunction with the embodiment of the present invention exports, step S300 is to step S309, proposes following control strategy:
The start time of S1, alternating current AC fault is T
0;
S2, the first power output P of electric power system fuel cell pack now
1with the 3rd power output P of storage battery
2, according to P=P
1+ P
2relation provide driving power P to the load in electric power system;
S3, detects fuel cell normal to whether, that is, whether fuel cell pack is within the default unit interval, the first power output P
1the power output of fuel cell pack in ratio is exported lower than predetermined power;
S4, if normally, then according to the battery electric quantity of storage battery, gas fill rat and the 3rd power output P
2, automatically adjust P
1and P
2export ratio;
S5, if abnormal, then with the minimum economize on electricity pressure V of batteries every in fuel cell pack
minadjustment P
1, the second power output P ' after being adjusted
1with the 4th power output P '
2;
S6, detects storage battery and whether multiplying power discharging occurred;
S7, if so, then enters low power mode of operation, that is, second mode of operation by electric power system adjustment;
S8, if fuel cell pack multiplying power discharging did not occur, then according to P '
1repair fuel cell pack, regulate P '
1to P
1.
The method that the control electric power system that the embodiment of the present invention provides exports, can avoid the output current occurring to increase fuel cell pack, thus continues to cause drops of economizing on electricity, and the situation then causing electric power system to be shut down occurs.And due to the energy conversion rate=economize on electricity pressure/1.25 of electric power system, the method that the control electric power system adopting the embodiment of the present invention to provide exports, can prevent economize on electricity pressure to be in low-end trim, namely ensure that high energy conversion rate.Wherein 1.25 is the theoretical value of the economize on electricity pressure of fuel cell technology.On the other hand, after electric power system shutdown, need some treatment measures, these treatment measures need the participation of unstrpped gas, and this participation process directly unstrpped gas " waste " has been fallen, but not become electric energy, so the method that the control electric power system adopting the embodiment of the present invention to provide exports, frequently can shut down by anti-locking system, thus avoid gas to waste, increase operation rate.Wherein, the method that the control electric power system that theoretical value 1.25 only provides to realize the embodiment of the present invention exports is as the criterion, and does not specifically limit.
Embodiment two
According to the embodiment of the present invention, additionally provide a kind of control of embodiment of the method exported for implementing above-mentioned control electric power system and to power the device exported.Fig. 5 is the structural representation of the device exported according to a kind of optional control electric power system of the embodiment of the present invention two, and as shown in Figure 5, this device comprises: first detection module 52, first adjustment module 54 judge module 56 and repair module 58, wherein,
Whether first detection module 52, within the default unit interval, detect the voltage of at least one batteries in fuel cell pack lower than predetermined threshold value;
First adjustment module 54, set up with first detection module 52 and be electrically connected, for when the test results is yes, with the first power output of the minimum economize on electricity pressure fuel metering battery pile in fuel cell pack, obtain the second power output, the second power output is less than the first power output;
Judge module 56, for judging whether the accessory power supply of electric power system crosses multiplying power discharging;
Repair module 58, set up with judge module 56 and be electrically connected, during for being no when judged result, repairing fuel cell pack, and the second power output is adjusted to the first power output.
Whether the device that the control electric power system that the embodiment of the present invention provides exports, within the default unit interval, detect the voltage of at least one batteries in fuel cell pack lower than predetermined threshold value; When the test results is yes, with the first power output of the minimum economize on electricity pressure fuel metering battery pile in fuel cell pack, obtain the second power output, the second power output is less than the first power output; Judge whether the accessory power supply of electric power system crosses multiplying power discharging; When judged result is no, repair fuel cell pack, and the second power output is adjusted to the first power output, reach the object maintaining fuel cell system power stability and export, thus achieve the technique effect avoiding fuel cell system generation electricity shortage to cause power breakdown, and then the batteries voltage keeps solved owing to occurring in fuel cell pack declines, fuel cell system generation electricity shortage is caused to cause the technical problem of power breakdown.
Optionally, Fig. 6 is a kind of structural representation controlling the device that electric power system exports provided according to the embodiment of the present invention, and as shown in Figure 6, the device that the control electric power system that the embodiment of the present invention provides exports also comprises: the second detection module 50 and the first coupling module 51, wherein
Second detection module 50, for before whether the voltage detecting at least one batteries in fuel cell pack is lower than predetermined threshold value, detects the power output of accessory power supply, obtains the 3rd power output;
First coupling module 51, for the first power output and the 3rd power output of being coupled, obtains the driving power of load in electric power system.
Optionally, Fig. 7 is the structural representation that the another kind provided according to the embodiment of the present invention controls the device that electric power system exports, and as shown in Figure 7, the device that the control electric power system that the embodiment of the present invention provides exports also comprises: the second adjustment module 55, wherein,
Second regulates mould 55, for after whether the voltage detecting at least one batteries in fuel cell pack is lower than predetermined threshold value, before judging whether the accessory power supply of electric power system crosses multiplying power discharging, when testing result is no, according to the running status of accessory power supply, regulate the export ratio of the first power output and the 3rd power output, obtain the driving power of load in corresponding electric power system.
Optionally, Fig. 8 is the structural representation that another providing according to the embodiment of the present invention controls the device that electric power system exports, and as shown in Figure 8, the first adjustment module 54 comprises: detecting unit 541 and regulon 542, wherein,
Detecting unit 541, for according to minimum economize on electricity pressure, detects the output current I obtaining fuel cell pack;
Regulon 542, for regulating the first power output according to the cell number n in output current I, minimum economize on electricity pressure and fuel cell pack, obtain the second power output, n is natural number, and n is more than or equal to 1.
Optionally, Fig. 9 is the structural representation that another providing according to the embodiment of the present invention controls the device that electric power system exports, and as shown in Figure 9, the device that the control electric power system that the embodiment of the present invention provides exports also comprises: the 3rd adjustment module 55 and the second coupling module 57, wherein
3rd adjustment module 55, for after pressing the first power output of fuel metering battery pile with the minimum economize on electricity in fuel cell pack, according to the second power output and the driving power of load that obtains in advance, the 3rd power output of adjustment accessory power supply, obtains the 4th power output;
Second coupling module 57, for the 4th power output and the second power output of being coupled, the driving power of adjusted back loading.
Optionally, Figure 10 is a kind of structural representation controlling the device that electric power system exports provided according to another embodiment of the present invention, and as shown in Figure 10, the device that the control electric power system that the embodiment of the present invention provides exports also comprises: control module 59, wherein,
Control module 59, for after judging whether accessory power supply crosses multiplying power discharging, when judged result is for being, cutting off the non-core services in load, controlling electric power system and entering low power mode of operation.
Embodiment three
According to the embodiment of the present invention, the system that the control electric power system additionally providing a kind of embodiment of the method for implementing the method that above-mentioned control electric power system exports exports.Figure 11 is a kind of structural representation controlling the system that electric power system exports provided according to the embodiment of the present invention, as shown in figure 11, this system comprises: accessory power supply state monitoring apparatus 1105, first power-converting device 1106, second power-converting device 1107 of the fuel supply control device 1103 of load 1101, fuel cell pack 1102, corresponding fuel cell pack 1102, accessory power supply 1104, corresponding accessory power supply 1104 and power stage control module 1108, wherein
Load 1101, be electrically connected with the output of the first power-converting device 1106, fuel cell pack 1102 and accessory power supply 1104 respectively, for receiving the power output of the alternating current be electrically connected with the first power-converting device 1106, and/or the 3rd power output of the first power output of fuel cell pack 1102 output and accessory power supply 1104 output; Within the default unit interval, whether the fuel supply control device 1103 be electrically connected with fuel cell pack 1102 detects the voltage of at least one batteries in fuel cell pack 1102 lower than predetermined threshold value; When the test results is yes, the second power-converting device 1107 be electrically connected with the output of fuel cell pack 1102 is according to minimum joint voltage-regulation first power output in fuel cell pack 1102, obtain the second power output, the second power output is less than the first power output; Accessory power supply state monitoring apparatus 1105 judges whether accessory power supply 1104 crosses multiplying power discharging; When judged result is no, power stage control module 1108 repairs fuel cell pack 1102, and by the second power-converting device 1107, second power output is adjusted to the first power output.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In the above embodiment of the present invention, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiments that the application provides, should be understood that, disclosed technology contents, the mode by other realizes.Wherein, device embodiment described above is only schematic, the such as division of described unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of unit or module or communication connection can be electrical or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple unit.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, server or the network equipment etc.) perform method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1. control the method that electric power system exports, it is characterized in that, comprising:
Within the default unit interval, whether detect the voltage of at least one batteries in fuel cell pack lower than predetermined threshold value;
When the test results is yes, with the first power output of fuel cell pack described in the minimum joint voltage-regulation in described fuel cell pack, obtain the second power output, described second power output is less than described first power output;
Judge whether the accessory power supply of electric power system crosses multiplying power discharging;
When judged result is no, repair described fuel cell pack, and described second power output is adjusted to described first power output.
2. method according to claim 1, is characterized in that, before whether the voltage detecting at least one batteries in fuel cell pack is lower than predetermined threshold value, described method also comprises:
Detect the power output of described accessory power supply, obtain the 3rd power output;
Described first power output that is coupled and described 3rd power output, obtain the driving power of load in described electric power system.
3. method according to claim 2, is characterized in that, after whether the voltage detecting at least one batteries in fuel cell pack lower than predetermined threshold value, described judge whether the accessory power supply of electric power system crosses multiplying power discharging before, described method also comprises:
When described testing result is no, according to the running status of described accessory power supply, regulate the export ratio of described first power output and described 3rd power output, obtain the driving power of described load.
4. method according to claim 1, is characterized in that, when the test results is yes described, and with the first power output of fuel cell pack described in the minimum joint voltage-regulation in described fuel cell pack, the step obtaining the second power output comprises:
According to described minimum economize on electricity pressure, detect the output current I obtaining described fuel cell pack;
Regulate described first power output according to the cell number n in described output current I, described minimum economize on electricity pressure and described fuel cell pack, obtain described second power output, described n is natural number, and n is more than or equal to 1.
5. method according to claim 4, is characterized in that, when the test results is yes, after the first power output of fuel cell pack described in the minimum joint voltage-regulation in described fuel cell pack, described method also comprises:
According to described second power output and the driving power of described load that obtains in advance, regulate the 3rd power output of described accessory power supply, obtain the 4th power output;
Be coupled the driving power of described 4th power output and described second power output, adjusted rear described load.
6. method according to claim 2, is characterized in that, after judging whether accessory power supply crosses multiplying power discharging, described method also comprises:
When judged result is for being, cutting off the non-core services in described load, controlling described electric power system and entering low power mode of operation.
7. control the device that electric power system exports, it is characterized in that, comprising:
Whether first detection module, within the default unit interval, detect the voltage of at least one batteries in fuel cell pack lower than predetermined threshold value;
First adjustment module, for when the test results is yes, with the first power output of fuel cell pack described in the minimum joint voltage-regulation in described fuel cell pack, obtain the second power output, described second power output is less than described first power output;
Judge module, for judging whether the accessory power supply of electric power system crosses multiplying power discharging;
Repair module, during for being no when judged result, repair described fuel cell pack, and described second power output is adjusted to described first power output.
8. device according to claim 7, is characterized in that, described device also comprises:
Second detection module, for before whether the voltage detecting at least one batteries in fuel cell pack is lower than predetermined threshold value, detects the power output of described accessory power supply, obtains the 3rd power output;
First coupling module, for described first power output and described 3rd power output of being coupled, obtains the driving power of load in described electric power system.
9. device according to claim 8, is characterized in that, described device also comprises:
Second adjustment module, for after whether the voltage detecting at least one batteries in fuel cell pack is lower than predetermined threshold value, before whether the described accessory power supply judging electric power system crosses multiplying power discharging, when described testing result is no, according to the running status of described accessory power supply, regulate the export ratio of described first power output and described 3rd power output, obtain the driving power of described load.
10. device according to claim 7, is characterized in that, described first adjustment module comprises:
Detecting unit, for according to described minimum economize on electricity pressure, detects the output current I obtaining described fuel cell pack;
Regulon, for regulating described first power output according to the cell number n in described output current I, described minimum economize on electricity pressure and described fuel cell pack, obtain described second power output, described n is natural number, and n is more than or equal to 1.
11. devices according to claim 10, is characterized in that, described device also comprises:
3rd adjustment module, for after with the first power output of fuel cell pack described in the minimum joint voltage-regulation in described fuel cell pack, according to described second power output and the driving power of described load that obtains in advance, regulate the 3rd power output of described accessory power supply, obtain the 4th power output;
Second coupling module, for described 4th power output and described second power output of being coupled, the driving power of adjusted rear described load.
12. devices according to claim 8, is characterized in that, described device also comprises:
Control module, for after judging whether accessory power supply crosses multiplying power discharging, when judged result is for being, cutting off the non-core services in described load, controlling described electric power system and entering low power mode of operation.
13. 1 kinds of systems controlling electric power system and export, it is characterized in that, comprise: the accessory power supply state monitoring apparatus of the fuel supply control device of load, fuel cell pack, corresponding described fuel cell pack, accessory power supply, corresponding described accessory power supply, the first power-converting device, the second power-converting device and power stage control module, wherein
Described load, be electrically connected with the output of described first power-converting device, described fuel cell pack and described accessory power supply respectively, for receiving the power output of the alternating current be electrically connected with described first power-converting device, and/or the 3rd power output of the first power output of described fuel cell pack output and the output of described accessory power supply; Within the default unit interval, whether the described fuel supply control device be electrically connected with described fuel cell pack detects the voltage of at least one batteries in described fuel cell pack lower than predetermined threshold value; When the test results is yes, described second power-converting device be electrically connected with the output of described fuel cell pack is according to the first power output described in the minimum joint voltage-regulation in described fuel cell pack, obtain the second power output, described second power output is less than described first power output; Described accessory power supply state monitoring apparatus judges whether described accessory power supply crosses multiplying power discharging; When judged result is no, described power stage control module repairs described fuel cell pack, and by described second power-converting device, described second power output is adjusted to described first power output.
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| CN116344874A (en) * | 2023-03-31 | 2023-06-27 | 上海氢晨新能源科技有限公司 | Method for judging state of electric pile of fuel cell, optimizing method and application |
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Effective date of registration: 20200821 Address after: 610000 No. 18 West core road, hi tech Zone, Chengdu, Sichuan Patentee after: Dongfang Electric (Chengdu) Hydrogen Fuel Cell Technology Co.,Ltd. Address before: 611731, No. 18, West core road, hi tech West District, Sichuan, Chengdu Patentee before: DONGFANG ELECTRIC Corp. |