CN107857198A - Power supply device, power supply method - Google Patents

Power supply device, power supply method Download PDF

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Publication number
CN107857198A
CN107857198A CN201711135465.8A CN201711135465A CN107857198A CN 107857198 A CN107857198 A CN 107857198A CN 201711135465 A CN201711135465 A CN 201711135465A CN 107857198 A CN107857198 A CN 107857198A
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CN
China
Prior art keywords
voltage values
target voltage
electrical storage
power supply
charge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201711135465.8A
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Chinese (zh)
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CN107857198B (en
Inventor
尾崎和基
森田克明
豊原尚
吉冈伸郎
古川佑纪
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Sumitomo Heavy Industries Material Handling Systems Co Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Sumitomo Heavy Industries Material Handling Systems Co Ltd
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Priority to JP2012-224249 priority Critical
Priority to JP2012224249A priority patent/JP6196764B2/en
Application filed by Mitsubishi Heavy Industries Ltd, Sumitomo Heavy Industries Material Handling Systems Co Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to CN201380039016.7A priority patent/CN104488164B/en
Publication of CN107857198A publication Critical patent/CN107857198A/en
Application granted granted Critical
Publication of CN107857198B publication Critical patent/CN107857198B/en
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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/12Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices

Abstract

A kind of power supply device, to electrical load supply electric power, including:Power-converting device, the direct current power that the alternating electromotive force supplied from power supply is transformed to the 1st target voltage values are supplied to the electrical load;Electrical storage device, the power-converting device is parallel-connected to the electrical load, discharge and recharge can be carried out;Charge-discharge controller, control discharge and recharge so that the magnitude of voltage of the electrical storage device is the 2nd target voltage values;And target voltage values setup unit, by the charge rate of the electrical storage device compared with threshold value, according to comparative result, increase and decrease at least one of the 1st target voltage values or the 2nd target voltage values.

Description

Power supply device, power supply method
The application is the divisional application of following patent application:The applying date is August in 2013 29, Application No. 201380039016.7 entitled " power supply device, power supply method and program ".
Technical field
The present invention relates to power supply device, power supply method and program.
This application claims the preferential of the Patent 2012-224249 filed an application based on October 9th, 2012 in Japan Power, its content edge is used for this.
Background technology
In the equipment such as hybrid goliath crane or hybrid vehicle or mixing rail truck, have with engine generator With the equipment of the tandem hybrid mode of electrical storage device.Moreover, in goliath crane, substituted engine generator and from lifting Power supply outside machine receives the equipment (for example, patent document 1) of power supply.
At these and for since the electric discharge of the electric power of engine generator or external power source etc. and electrical storage device electricity ,, can be with by also using the discharged power of electrical storage device except electric power in the state of electrical load is big in the equipment of power Make the maximum of the supply electric power from power supply reduce.
For example, receiving power supply from external power source and there is the goliath crane of electrical storage device, in low-load, lead to Crossing the electric power from external power source makes driving motor or rolls to be acted with the various loads such as motor, while by from this The electric power of external power source charges to electrical storage device.
On the other hand, roll lifting load when etc. high capacity when, electrical storage device is discharged, except from external power source Electric power, also to load provide the discharged power from electrical storage device.By electrical storage device to loading supply electric power, make from electricity The maximum of the supply electric power in source reduces, it is possible to reduces supply voltage.
Prior art literature
Patent document
Patent document 1:(Japan) JP 2007-166775 publications
The content of the invention
The invention problem to be solved
The equipment such as crane in the case where being acted using the electric power from power supply and the electric power from electrical storage device, Discharge and recharge is efficiently controlled to turn into problem according to the running-active status of equipment.For example, it is desirable to switch the discharge and recharge of electrical storage device rapidly And without sluggish carry out discharge and recharge.
The present invention provides power supply device, power supply method and program, for and with electric power and electric power storage dress The equipment for the discharged power put, discharge and recharge is efficiently controlled according to the running-active status of equipment and carries out power supply.
Means for solving the problems
The power supply device of the mode of the present invention, to electrical load supply electric power, including:Power-converting device, The alternating electromotive force supplied from power supply is transformed to the direct current power of the 1st target voltage values and is supplied to the electrical load;Electric power storage Device, the power-converting device is parallel-connected to the electrical load, discharge and recharge can be carried out;Charge-discharge controller, Control discharge and recharge so that the magnitude of voltage of the electrical storage device is the 2nd target voltage values;And target voltage values setup unit, will The charge rate of the electrical storage device, according to comparative result, increases and decreases the 1st target voltage values or the 2nd target voltage compared with threshold value What is be worth is at least one.
Moreover, the power supply device of another mode of the present invention is above-mentioned power supply device, the power load Load can generate regenerated electric power, and the threshold value is set to subtract the regeneration electricity from the state of the full charge of the electrical storage device Below charge rate obtained by the storage unit of power, the target voltage values setup unit is institute in the charge rate of the electrical storage device When stating more than threshold value, increase and decrease at least one of the 1st target voltage values or the 2nd target voltage values so that the described 2nd Target voltage values are more than the 1st target voltage values.
Moreover, the power supply device of another mode of the present invention is above-mentioned power supply device, the target electricity Pressure value setup unit when the charge rate of the electrical storage device is below the threshold value, make the 2nd target voltage values reduce and Less than the 1st target voltage values.
Moreover, the power supply device of another mode of the present invention is above-mentioned power supply device, the target electricity Pressure value setup unit when the charge rate of the electrical storage device is below the threshold value, make the 1st target voltage values increase and More than the 2nd target voltage values.
Moreover, the power supply device of another mode of the present invention is above-mentioned power supply device, the power load Load is crane equipment, and the electric power that the target voltage values setup unit does not have the electrical load more than the stipulated time changes In the case of, stop at least one of which of the charge or discharge of the electrical storage device.
Moreover, the power supply method of another embodiment of the invention is the power supply of power supply device Method, the power supply device include:Power-converting device, the alternating electromotive force supplied from power supply is transformed to the 1st target voltage The direct current power of value is supplied to electrical load;And electrical storage device, it is parallel-connected to the power converter with the electrical load Device, can carry out discharge and recharge, and the power supply method includes:Charge and discharge control step, control discharge and recharge so that the storage The magnitude of voltage of electric installation is the 2nd target voltage values;And target voltage values setting procedure, by the charge rate of the electrical storage device with Threshold value compares, and according to comparative result, increases and decreases at least one of the 1st target voltage values or the 2nd target voltage values.
Moreover, the program of another mode of the present invention is the journey for performing the computer of control power supply device Sequence, the power supply device include:Power-converting device, the alternating electromotive force supplied from power supply is transformed to the 1st target voltage The direct current power of value is supplied to electrical load;And electrical storage device, it is parallel-connected to the power converter with the electrical load Device, can carry out discharge and recharge, and described program includes:Charge and discharge control step, control discharge and recharge so that the electrical storage device Magnitude of voltage is the 2nd target voltage values;And target voltage values setting procedure, by the charge rate of the electrical storage device and threshold value ratio Compared with according to comparative result, increasing and decreasing at least one of the 1st target voltage values or the 2nd target voltage values.
The effect of invention
According to above-mentioned power supply device, power supply method and program, for and with electric power and electric power storage dress The equipment for the discharged power put, it can efficiently control discharge and recharge according to the running-active status of equipment and carry out power supply.
Brief description of the drawings
Fig. 1 is the outline drawing of the outline of the profile of the wheeled crane in the 1st embodiment for represent the present invention.
Fig. 2 is the summary construction diagram for the apparatus structure for representing the power supply device in the 1st embodiment.
Fig. 3 is saying for the example for the target voltage values for representing timer (sequencer) setting in the 1st embodiment Bright figure.
Fig. 4 is the explanation figure of the example of intermediate voltage value when representing the high capacity in the 1st embodiment.
Fig. 5 is the explanation figure of the example of intermediate voltage value when representing the regeneration in the 1st embodiment.
Fig. 6 is represented in the 1st embodiment, and timer sets the flow chart of the processing step of the 2nd target voltage values.
Fig. 7 is the summary construction diagram of the apparatus structure of the power supply device in the 2nd embodiment for represent the present invention.
Fig. 8 is the explanation figure of the example for the target voltage values for representing the timer setting in the 2nd embodiment.
Fig. 9 is represented in the 2nd embodiment, and timer sets the flow chart of the processing step of the 1st target voltage values.
Embodiment
Hereinafter, the present invention is illustrated by the embodiment of invention, but following embodiment does not limit claims Relevant invention.Moreover, be not necessarily for the solution of invention must for whole combinations of the feature illustrated in embodiments Must.
The embodiment > of < the 1st
Fig. 1 is wheeled crane (the Rubber Tired Gantry Crane in the 1st embodiment for represent the present invention; RTG the outline drawing of the outline of profile).
In the figure, the traveling lane L set on the road surface R that wheeled crane system 1 is located in container pool Y On, the tire 6a that making traveling mechanism 6 by driving motor has is rotated independently to be travelled on traveling lane L, is collected Vanning C handling.
More specifically, wheeled crane system 1 includes:The crane main body 3 travelled by tire 6a on the R of road surface; Extend from crane main body 3, the service cable 4 as cable being connected with traveling lane L ground power supply equipment 2;It is arranged on The cable drum 5 for batching and rolling out of service cable 4 is carried out in crane main body 3;And house power supply device and rise The chest 10 of the control device of heavy-duty machine main body 3 etc..
Crane main body 3 includes:Above-mentioned traveling mechanism 6;Set up with being generally parallel to each other, the row of traveling mechanism 6 can be passed through A pair of the foots 7 sailed;The beam portion 8 set up between foot 7 on top;And hang the hanging mechanism 9 for being located at beam portion 8.
A pair of foots 7 support beam portion 8 and hanging mechanism 9, beam portion 8 to be supported, so as to hanging hanging mechanism 9.Then, Guide rail 8a is set along the length direction of beam portion 8, hanging mechanism 9 can travel along guide rail 8a on the length direction of beam portion 8.
More specifically, hanging mechanism 9 includes:The trol(l)ey (-lly) 9a that can be travelled along the guide rail 8a of beam portion 8;Grasp packaging Case C suspender 9b;From trol(l)ey (-lly) 9a hanging suspenders 9b hanging rope 9c;And carry out rolling and rolling out for hanging rope 9c Hoist engine 9d.
In such a configuration, crane main body 3 carries out container C tripping action.Specifically, grasped in suspender 9b During container C, hoist engine 9d is rolled by rolling hanging rope 9c with the power of motor, so as to lift container C.Lifting collection Case in the state of C, hanging mechanism 9 (trol(l)ey (-lly) 9a) travels on the length direction of beam portion 8, moreover, crane main body edge Traveling lane L travelings, move container C.When container C is moved to destination locations, hoist engine 9d is by putting back to hanging Rope 9c winding, decline container C.
Here, crane main body 3 and with the electric power from ground power supply equipment 2 and the electric power that accommodates in comfortable chest 10 is carried out The electric power for the electrical storage device that feedway has, carry out the traveling of crane main body 3, the traveling of hanging mechanism 9, hoist engine 9d and enter Capable hanging rope 9c's the various actions such as rolls.
Specifically, cable side-connector 4a, the mains side with ground power supply equipment 2 are set in the front end of service cable 4 Connector 2a connections.Crane main body 3 receives electric power via service cable 4 from ground power supply equipment 2, by being accommodated in chest 10 Power supply device to each several part supply electric power of crane main body 3.Moreover, as described later, power supply device control stores The discharge and recharge of electric installation, except the electric power from ground power supply equipment 2, the discharged power of electrical storage device is also supplied into lifting owner The each several part of body 3.
Cable drum 5 is powered batching for the remainder of cable 4, so as not to meeting because service cable 4 is loose and right The traveling of crane main body 3 produces obstacle.
Then, reference picture 2 illustrates the structure of power supply device.
Fig. 2 is the summary construction diagram for the apparatus structure for representing power supply device 100.In the figure, power supply device 100 include:AC/DC converters 101;Electrical storage device 111;Charge-discharge controller 112;And timer 121.Moreover, Ground power-supply device 2 is shown in Fig. 2 and connects service cable 4, the electric power of ground power supply equipment 2 and power supply device 100 The load 90 of the supply electric power of feedway 100.
Ground power supply equipment 2 includes power supply side-connector 2a;Power subsystem 2b;And transformer 2c, by power subsystem 2b The alternating electromotive force of output exports by transformer 2c transformations, and from power supply side-connector 2a.As described above, in power supply side-connector The upper connecting cable side-connector 4a of 2a, service cable 4 will be by cable side-connector 4a from the 2 powered exchange of ground power supply equipment Power supply power supply device 100.
Moreover, one of the power supply that ground power supply equipment 2 corresponds in present embodiment.Power subsystem 2b both can be hair Electric equipment or to the powered power receiving equipment such as source power supply.Moreover, the power supply in present embodiment is not limited to ground The grade of face power-supply device 2 external power source (in the outside power supply set of power supply device).Such as can also be power supply dress Putting 100 has generator etc., and in power supply device 100, the inside of itself has power supply.
Load 90 be make tire 6a (Fig. 1) rotate so that crane main body 3 travel driving motor, as volume The control device etc. rolled with motor, crane main body 3 of power source when the machine 9d of raising rolls hanging rope 9c, crane main body The general name of electrical load in 3.
Particularly, load 90 can produce regenerated electric power.Specifically, braking of the traveling mechanism 6 in crane main body 3 When, driving motor is acted as regeneration brake, so as to be regenerated.Moreover, hoist engine 9d is by hanging rope When 9c is rewinded and made lifting load reduction, make to roll and acted by the use of motor as regeneration brake, carried so as to adjust lifting The decrease speed of lotus is regenerated simultaneously.
The alternating electromotive force supplied from ground power supply equipment 2 is transformed to the straight of the 1st target voltage values by AC/DC converters 101 Flow electric power and be supplied to load 90.In the present embodiment, the 1st target voltage values are preset as fixed magnitude of voltage.
Electrical storage device 111 has the secondary cell such as lead battery or lithium ion battery, carries out discharge and recharge.Here, store Electric installation 111 is parallel-connected to AC/DC converters 101 via charge-discharge controller 112 and load 90.Pass through such connection Relation, when the magnitude of voltage of the electric power from AC/DC converters 101 is higher than the magnitude of voltage of electrical storage device 111, electrical storage device 111 Floating charge is carried out by the electric power from AC/DC converters 101.On the other hand, in the electric power from AC/DC converters 101 Magnitude of voltage it is lower than the magnitude of voltage of electrical storage device 111 when, electrical storage device 111 is discharged and to loading 90 supply electric powers.
Moreover, electrical storage device 111 has BMU (Battery Management Unit, battery management unit), measurement two The charge rate of primary cell is simultaneously output to timer 121.
Charge-discharge controller 112 controls the discharge and recharge of electrical storage device 111 so that the voltage of electrical storage device 111 is the 2nd mesh Mark magnitude of voltage.In the present embodiment, the 2nd target voltage values are the variable magnitudes of voltage set by timer 121.
The charge rate of the secondary cell of electrical storage device 111 (below, is referred to simply as " electrical storage device 111 by timer 121 Charge rate ") compared with threshold value, according to comparative result make the 2nd target voltage values increase and decrease.Here, timer 121 prestores Electrical storage device 111 is switched into the discharge threshold ShA of electric discharge from charging, electrical storage device 111 is switched into filling for charging from electric discharge Electric threshold value ShB.Wherein, one of the threshold value that discharge threshold ShA corresponds in present embodiment.Moreover, the correspondence of timer 121 One of target voltage values setup unit in present embodiment.
Discharge threshold ShA is set to subtract the storage unit of regenerated electric power from the state of the full charge of electrical storage device 111 Below charge rate afterwards.Such as it is set to produce the situation for the regenerated electric power for making the electric power storage of electrical storage device 111, it is contemplated that in crane main body When the braking of 3 crane main body 3 when reaching the position of container, crane main body 3 reach container down position The braking of crane main body 3 and the braking of hoist engine when declining container.In this case, it is contemplated that in No. 2 cranes The aggregate value of caused regenerated electric power during the braking of main body 3 and No. 1 container decline, equivalent to the storage unit of regenerated electric power.
The attendant of wheeled crane system 1 calculates filling after the storage unit that regenerated electric power is subtracted from fully charged state Electric rate, i.e. predict the charge rate of the surplus for the regenerated electric power that can charge.Then, the attendant of wheeled crane system 1 will The charge rate calculated makes it be stored in advance in timer 121 as discharge threshold ShA.Or wheeled crane system 1 Attendant the charge rate of the balance for considering deterioration of battery etc. will can also be further subtracted from the charge rate calculated As discharge threshold ShA, it is stored in advance in timer 121.
On the other hand, charge threshold ShB is set to the value smaller than discharge threshold ShA.If moreover, charge threshold ShB ≤ discharge threshold ShA, then power supply device 100 (timer 121 and charge-discharge controller 112) electric power storage can be controlled Device 111, but in order to prevent from frequently occurring the switching of discharge and recharge, preferably set between charge threshold ShB and discharge threshold ShA Put dead band (hysteresis).
When the charge rate of electrical storage device 111 is more than discharge threshold ShA, power supply device 100 makes the 2nd target voltage Value increases and is more than the 1st target voltage values.Set according to the target voltage values, charge-discharge controller 112 makes electrical storage device 111 Discharged.On the other hand, when the charge rate of electrical storage device 111 is below charge threshold ShB, power supply device 100 makes 2nd target voltage values reduce and are less than the 1st target voltage values.Set according to the target voltage values, charge-discharge controller 112 makes Electrical storage device 111 is charged.
Fig. 3 is the explanation figure of the example for the target voltage values that representation program device 121 is set.In the figure, line L111 tables Show charge rate (the State Of Charge of electrical storage device 111;SOC example).Moreover, line L121 representation programs device 121 is set The example of the 2nd fixed target voltage values.Moreover, line L122 is represented between AC/DC converters 101 and charge-discharge controller 112 Intermediate voltage value example.
In the state of before the moment T11, the charge rate of electrical storage device 111 is less than discharge threshold ShA.Therefore, program fills Put 121 the target voltage values (the 2nd target voltage values) of electrical storage device 111 are set smaller than as the defeated of AC/DC converters 101 Go out the magnitude of voltage Vpset of voltage-target (the 1st target voltage values) magnitude of voltage Vdset0.Set according to the voltage-target, Charge-discharge controller 112 controls electrical storage device 111, and the magnitude of voltage for making electrical storage device 111 is magnitude of voltage Vdset0.Therefore, AC/ The voltage of the side of DC converters 101 is higher than the voltage of the side of electrical storage device 111, and electrical storage device 111 is carried out from AC/DC converters 101 Floating charge.
By floating charge, the charge rate of electrical storage device 111 rises, and charge rate reaches discharge threshold in moment T11 ShA.So, the target voltage values (the 2nd target voltage values) of electrical storage device 111 are set greater than AC/DC and turned by timer 121 The output voltage desired value (the 1st target voltage values) of parallel operation 101 is magnitude of voltage Vpset magnitude of voltage Vdset1.According to the voltage Desired value is set, and charge-discharge controller 112 controls electrical storage device 111 so that the magnitude of voltage of electrical storage device 111 is magnitude of voltage Vdset1.Therefore, the voltage of the side of electrical storage device 111 is higher than the voltage of the side of AC/DC converters 101, and electrical storage device 111 is to load 90 Discharged.
Due to electric discharge, the charge rate of electrical storage device 111 reduces, and in moment T12, charge rate reaches charge threshold ShB.This Sample, timer 121 is by target voltage values (the 2nd target voltage values) return voltage value Vdset0 of electrical storage device 111.Therefore, With moment T11 as before, the voltage of the side of AC/DC converters 101 is higher than the voltage of the side of electrical storage device 111, from AC/DC converters 101 pairs of electrical storage devices 111 carry out floating charge.
Moreover, in the example in figure 3, the electrical load for loading 90 is in less state, and the influence that voltage declines is small.Cause This, the intermediate voltage value that line L122 is represented turns into the value between the 1st target voltage values and the 2nd target voltage values.
Then, reference picture 4, electric discharge during high capacity is illustrated.
Fig. 4 is the explanation figure of the example of intermediate voltage value when representing high capacity.In the figure, line L211 representation programs fill Put the example of the 2nd target voltage values of 121 settings.In the example in fig. 4, timer 121 continues to set the 2nd target voltage values It is set to the magnitude of voltage Vdset0 less than the 1st target voltage values.
Moreover, line L212 represents the example of the intermediate voltage value between AC/DC converters 101 and charge-discharge controller 112 Son.
Before moment T21, the electrical load for loading 90 is in less state.Therefore, with before T11 at the time of Fig. 3 State it is identical, from AC/DC converters 101 to electrical storage device 111 carry out floating charge.
On the other hand, from moment T21 to moment T22, the electrical load for loading 90 is in larger state.Therefore, produce Voltage drop, so as to which the line L212 intermediate voltage values represented are less than the 2nd target voltage values of line L211 expressions.Therefore, electrical storage device 111 voltage turns into the state of the voltage higher than connection destination (particularly loading 90), and electrical storage device 111 is carried out to load 90 Electric discharge.
So, the 2nd target voltage values are set smaller than to the magnitude of voltage of the 1st target voltage values even in timer 121 In the state of, when the electrical load for loading 90 becomes big, electrical storage device 111 also discharges load 90.Therefore, can make to come Reduced from the maximum of the supply electric power of ground power supply equipment 2, supply voltage can be reduced.Therefore, transformer 2c (figures can be made 2) magnitude of voltage of output is smaller.
Moreover, in the state of the 2nd target voltage values are more than the 1st target voltage values, electrical storage device 111 can also incite somebody to action Regenerated electric power electric power storage.
Fig. 5 is the explanation figure of the example of intermediate voltage value when representing regeneration.In the figure, line L311 representation programs device The example of 2nd target voltage values of 121 settings.In the example of fig. 5, timer 121 continues to set the 2nd target voltage values For the magnitude of voltage Vdset1 more than the 1st target voltage values.
Moreover, line L312 is to represent the intermediate voltage value between AC/DC converters 101 and charge-discharge controller 112 Example.
Before moment T31, load 90 is without regeneration, electric power storage dress identical with the state from T11 at the time of Fig. 3 to T12 111 pairs of loads 90 are put to discharge.
On the other hand, from moment T31 to moment T32, load 90 is regenerated, by regenerated electric power, what line L312 was represented Intermediate voltage value rises, and intermediate voltage value is more than the 2nd target voltage values that line L311 is represented.Therefore, the voltage of electrical storage device 111 As the state of the voltage less than connection destination (particularly loading 90), the charging regenerated electric power of electrical storage device 111.
So, the 2nd target voltage values are set greater than to the magnitude of voltage of the 1st target voltage values even in timer 121 In the state of, if load 90 is regenerated, the charging regenerated electric power of electrical storage device 111.So, due to regeneration can not be wasted Electric power and carry out electric power storage this point, power supply device 100 can efficiently control storage according to the running-active status of crane main body 3 The discharge and recharge of electric installation 111, power supply is carried out to load 90.
Moreover, as noted previously, as charge-discharge controller 112 is controlled by predicting the surplus of chargeable regenerated electric power The discharge and recharge of electrical storage device 111, also will not overcharge so charging regenerated electric power even if electrical storage device 111.
Referring next to Fig. 6, illustrate the action of power supply device 100.
Fig. 6 is the flow chart for the processing step that representation program device 121 sets the 2nd target voltage values.Timer 121 exists The power supply of connection (ON) itself and when turning into operating state, carry out the processing of the figure.
In Fig. 6 processing, the 2nd target voltage values are initially set less than the 1st target voltage by timer 121 first The magnitude of voltage Vdset0 (step S101) of value.As described above, in the state of the 2nd target voltage values turn into magnitude of voltage Vdset0, Although electrical storage device 111 is charged, the load 90 is discharged when load 90 is high capacity.
Then, timer 121 judges whether the charge rate of electrical storage device 111 is more than discharge threshold ShA (step S102).(the step S102 in the case where being determined as insufficient discharge threshold ShA:It is no), return to step S102.That is, timer The charge rate of 121 wait electrical storage devices 111 turns into more than discharge threshold ShA.
On the other hand, in step s 102, the charge rate for being determined as electrical storage device 111 is more than discharge threshold ShA feelings (step S102 under condition:It is), the 2nd target voltage values are set greater than the magnitude of voltage of the 1st target voltage values by timer 121 Vdset1 (step S103).As described above, in the state of the 2nd target voltage values turn into magnitude of voltage Vdset1, although electric power storage fills Put 111 pairs of loads 90 to discharge, but when load 90 is regenerated, charge regenerated electric power.
Then, timer 121 judges whether the charge rate of electrical storage device 111 is (step below charge threshold ShB S104).(the step S104 in the case where being judged to being more than charge threshold ShB:It is no), return to step S104.That is, timer The charge rate of 121 wait electrical storage devices 111 turns into below charge threshold ShB.
On the other hand, in step S104, it is being determined as that the charge rate of electrical storage device 111 is below charge threshold ShB In the case of (step S104:It is), the 2nd target voltage values are set as magnitude of voltage Vdset0 (step S105) by timer 121.
Afterwards, return to step S102.
As described above, charge-discharge controller 112 makes storage by the 2nd target voltage values set according to timer 121 The voltage change of electric installation 111, switch the discharge and recharge of electrical storage device 111.Therefore, because electric power storage need not be switched using switch The discharge and recharge of device 111, so moment disconnection does not occur.That is, do not occur to come from electrical storage device 111 caused by switching switching action The delay that starts of power supply or electrical storage device 111 the delay that starts of charging.In this point, power supply device 100 The discharge and recharge of electrical storage device 111 can be efficiently controlled according to the running-active status of crane main body 3, electric power confession is carried out to load 90 Give.
Moreover, the 2nd target voltage values are set smaller than to the shape of the magnitude of voltage of the 1st target voltage values in timer 121 Under state, if the electrical load of load 90 becomes big, electrical storage device 111 discharges load 90.Therefore, can make from ground The maximum of the supply electric power of face power-supply device 2 declines, and can reduce supply voltage.Therefore, transformer 2c (Fig. 2) can be made defeated The magnitude of voltage gone out is smaller.
Moreover, the 2nd target voltage values are set greater than to the shape of the magnitude of voltage of the 1st target voltage values in timer 121 Under state, if load 90 is regenerated, the charging regenerated electric power of electrical storage device 111.So, by the way that regenerated electric power can not be abandoned And electric power storage this point is carried out, power supply device 100 efficiently can control electric power storage to fill according to the running-active status of crane main body 3 111 discharge and recharge is put, power supply is carried out to load 90.
It is additionally, since charge-discharge controller 112 and predicts the surplus of chargeable regenerated electric power to control electrical storage device 111 Discharge and recharge, also will not overcharge so charging regenerated electric power even if electrical storage device 111.
Moreover, by timer 121 can by the charge rate only referring to electrical storage device 111 come sets target magnitude of voltage, So as to control the discharge and recharge this point of electrical storage device 111, the discharge and recharge of simple structure control electrical storage device 111 can be passed through.
Moreover, in power supply device 100, there is no the switching of output voltage setting value in AC/DC converters 101 In the case of function, the discharge and recharge of electrical storage device 111 can also be controlled.
Moreover, in power supply device 100, charge-discharge controller 112 carries out the switching of voltage setting value.Therefore, In compared with the situation of switching of voltage setting value is carried out with AC/DC converters 101, following effect is obtained.
That is, add and set in the electric rolling cartridge type goliath crane without electrical storage device for installation AC/DC converters In the case of putting charge-discharge controller and electrical storage device, it is not necessary to add output voltage setting value to AC/DC converters and cut Change function.In the point, busy work can be cut down.
Moreover, the situation that present embodiment is applied to goliath crane is explained above, but the applicable model of the present invention Enclose not limited to this.For example, the present invention can be applied to the hybrid vehicle or mixing rail truck of tandem hybrid mode Deng, and with the various equipment of the electric power from power supply and the electric power from electrical storage device.For the 2nd embodiment described later Equally.
Moreover, timer 121 can also make target voltage value changes according to the running-active status of crane main body 3.For example, Within the time of setting, the feelings of (any one acted for coiling action and traveling) are changed in the electric power of no load 90 Under condition, according to the instruction of timer 121, charge-discharge controller 112 can make the charge or discharge of electrical storage device 111 At least one of which stops.Then, in the case where detecting that load electric changes, charge-discharge controller 112 can also make Electrical storage device 111 reverts to original state.
It can thus be avoided in the case of changing (any one of coiling action and traveling action) without load electric Useless discharge and recharge action repeatedly.It is same for the 2nd embodiment that then illustrates.
The embodiment > of < the 2nd
Being explained above timer 121 makes the situation of the 2nd target voltage value changes, but timer 121 can also Substitute the 2nd target voltage values and make the 1st target voltage value changes.Hereinafter, this point is illustrated.
Fig. 7 is the summary construction diagram of the apparatus structure of the power supply device in the 2nd embodiment for represent the present invention. In the figure, power supply device 200 includes:AC/DC converters 201;Electrical storage device 111;Charge-discharge controller 212;And Timer 221.Moreover, figure 7 illustrates:Ground power supply equipment 2;And connection ground power supply equipment 2 and power supply dress Put 100 service cable 4;The load 90 of the supply electric power of power supply device 100.In the figure 7, for each several part pair with Fig. 2 Should and the part with identical function, assign identical symbol (2,2a, 2b, 2c, 4,4a, 5,90,111) and omit the description.
Moreover, the profile of the wheeled crane in the 2nd embodiment with the 1st embodiment reference picture 1 illustrate it is identical, Omit diagram and explanation.
In wheeled crane system 1b, substitute the 2nd target voltage values in timer 221 and make the 1st target voltage values Change this point, it is different from the situation of wheeled crane system 1 (Fig. 2).
Timer 221 increases the 1st target voltage values when the charge rate of electrical storage device 111 is more than discharge threshold ShA Add and be more than the 2nd target voltage values.
The 1st target voltage values that AC/DC converters 201 are set according to timer 221, make AC/DC converters 201 itself Output voltage value changes.
Charge-discharge controller 212 is stored as charge-discharge controller 112 by being controlled according to the 2nd target voltage values The magnitude of voltage of electric installation 111, control the discharge and recharge of electrical storage device 111.Wherein, in charge-discharge controller 212, the 2nd target Be worth for fixed value this point it is different from charge-discharge controller 112.
Fig. 8 is the explanation figure of the example for the target voltage values that representation program device 221 is set.In the figure, line L411 tables Show charge rate (the State Of Charge of electrical storage device 111;SOC example).Moreover, line L421 representation programs device 221 is set The example of the 1st fixed target voltage values.
In the state of before the moment T41, the charge rate of electrical storage device 111 is less than discharge threshold ShA.Therefore, program fills Put 221 and the output voltage desired value (the 1st target voltage values) of AC/DC converters 201 is set greater than the mesh of electrical storage device 111 Mark magnitude of voltage (the 2nd target voltage values) is magnitude of voltage Vdset magnitude of voltage Vpset1.Set according to the voltage-target, AC/DC Converter 201 controls AC/DC converters 201 itself so that output voltage values are magnitude of voltage Vpset1.Therefore, AC/DC converters The voltage of 201 sides is higher than the voltage of the side of electrical storage device 111, and floating charge is carried out to electrical storage device 111 from AC/DC converters 201.
By floating charge, the charge rate of electrical storage device 111 rises, and charge rate reaches discharge threshold in moment T41 ShA.So, the output voltage desired value (the 1st target voltage values) of AC/DC converters 201 is set smaller than by timer 221 The target voltage values (the 2nd target voltage values) of electrical storage device 111 are magnitude of voltage Vdset magnitude of voltage Vpset0.According to the voltage Desired value is set, and AC/DC converters 201 control AC/DC converters 201 itself so that output voltage values are magnitude of voltage Vpset0. Therefore, the voltage of the side of electrical storage device 111 is higher than the voltage of the side of AC/DC converters 201, and electrical storage device 111 is put to load 90 Electricity.
By electric discharge, the charge rate of electrical storage device 111 reduces, and charge rate reaches charge threshold ShB in moment T42.This Sample, timer 221 make output voltage desired value (the 1st target voltage values) return voltage value of AC/DC converters 201 Vpset1.Therefore, with moment T41 as before, the voltage of the side of AC/DC converters 201 is higher than the voltage of the side of electrical storage device 111, Floating charge is carried out to electrical storage device 111 from AC/DC converters 201.
So, in power supply device 200, electric power storage dress can also be switched as the situation of power supply device 100 Put 111 discharge and recharge.
During high capacity on load 90, also as reference picture 4 illustrates, in timer 221 by the 1st target voltage Value is set greater than in the state of the magnitude of voltage of the 2nd target voltage values, if the electrical load of load 90 becomes big, electrical storage device 111 pairs of loads 90 are discharged.Therefore, the maximum of the supply electric power from ground power supply equipment 2 can be made reduce, make power supply Voltage declines.Therefore, the magnitude of voltage that can export transformer 2c (Fig. 2) is smaller.
Moreover, during regeneration on load 90, also as reference picture 5 illustrates, timer 221 is by the 1st target In the state of voltage value is the magnitude of voltage less than the 2nd target voltage values, if load 90 is regenerated, electrical storage device 111 charging regenerated electric powers.So, electric power storage this point is carried out due to regenerated electric power can not be abandoned, power supply device 200 can Efficiently to control the discharge and recharge of electrical storage device 111 according to crane main body 3b running-active status, electricity can be carried out to load 90 Power supplies.
Moreover, as the situation of charge-discharge controller 112, charge-discharge controller 212 by predict it is chargeable again The discharge and recharge of the surplus control electrical storage device 111 of raw electric power.Therefore, charging regenerated electric power even if electrical storage device 111 also will not mistake Charging.
Referring next to Fig. 9, illustrate the action of power supply device 200.
Fig. 9 is the flow chart for the processing step that representation program device 221 sets the 1st target voltage values.Timer 221 connects When being connected to the power supply of body and turning into operating state, the processing of the figure is carried out.
In Fig. 9 processing, the 1st target voltage values are initially set more than the 2nd target voltage by timer 221 first The magnitude of voltage Vpset1 (step S201) of value.As described above, in the state of the 1st target voltage values are magnitude of voltage Vpset1, though Right electrical storage device 111 is charged, but the load 90 is discharged when load 90 is high capacity.
Then, timer 221 judges whether the charge rate of electrical storage device 111 is more than discharge threshold ShA (step S202).(the step S202 in the case where being determined as insufficient discharge threshold ShA:It is no), return to step S202.That is, timer The charge rate of 221 wait electrical storage devices 111 turns into more than discharge threshold ShA.
On the other hand, the charge rate for being determined as electrical storage device 111 in step S202 is more than discharge threshold ShA situation Under (step S202:It is), the 1st target voltage values are set smaller than the magnitude of voltage of the 2nd target voltage values by timer 221 Vpset0 (step S203).As described above, in the state of the 2nd target voltage values are magnitude of voltage Vpset0, although electrical storage device 111 carry out the electric discharge to load 90, but regenerated electric power is charged when loading 90 regeneration.
Then, timer 221 judges whether the charge rate of electrical storage device 111 is (step below charge threshold ShB S204).(the step S204 in the case where being judged to being more than charge threshold ShB:It is no), return to step S204.That is, timer The charge rate of 221 wait electrical storage devices 111 is below charge threshold ShB.
On the other hand, the charge rate for being determined as electrical storage device 111 in step S204 is below charge threshold ShB situation Under (step S204:It is), the 1st target voltage values are set as magnitude of voltage Vpset1 (step S205) by timer 221.
Afterwards, return to step S202.
As described above, AC/DC converters 201 make AC/DC by the 1st target voltage values set according to timer 221 The output voltage value changes of converter 201 itself, switch the discharge and recharge of electrical storage device 111.Therefore, because switch need not be used To switch the discharge and recharge of electrical storage device 111, so not producing moment disconnection.That is, come from caused by not producing switch switching action The delay that the power supply of electrical storage device 111 starts or the delay that the charging of electrical storage device 111 starts.In the point, electric power Feedway 200 can efficiently control the discharge and recharge of electrical storage device 111, Ke Yijin according to crane main body 3b running-active status Power supply of the row to load 90.
Moreover, the 1st target voltage values are set greater than to the magnitude of voltage of the 2nd target voltage values even in timer 221 In the state of, if the electrical load of load 90 becomes big, electrical storage device 111 carries out the electric discharge to load 90.Therefore, can make The maximum of supply electric power from ground power supply equipment 2 reduces, and declines supply voltage.Therefore, transformer 2c (figures can be made 2) magnitude of voltage of output is smaller.
Moreover, the 1st target voltage values are set smaller than to the magnitude of voltage of the 2nd target voltage values even in timer 221 In the state of, if load 90 is regenerated, the charging regenerated electric power of electrical storage device 111.So, due to regeneration can not be abandoned Electric power and carry out electric power storage this point, power supply device 200 can efficiently control according to crane main body 3b running-active status The discharge and recharge of electrical storage device 111, power supply is carried out to load 90.
Moreover, charge-discharge controller 212 by predicting the surplus of chargeable regenerated electric power due to controlling electrical storage device 111 discharge and recharge, also will not overcharge so charging regenerated electric power even if electrical storage device 111.
Being additionally, since timer 221 can be by the charge rate only referring to electrical storage device 111 come sets target magnitude of voltage So as to control the discharge and recharge this point of electrical storage device 111, it is possible to pass through the charge and discharge of simple structure control electrical storage device 111 Electricity.
Moreover, in power supply device 200, there is no voltage instruction value switching in charge-discharge controller 212 In the case of function, the discharge and recharge of electrical storage device 111 can also be controlled.
Furthermore, it is also possible to it will be used to realize charge-discharge controller 112 or charge-discharge controller 212, timer 121 Or the program of all or part function of timer 221 is recorded in computer-readable recording medium, makes calculating Machine system reads in the program recorded in the recording medium, and carries out the processing of each unit by performing.It is moreover, referred to herein " computer system ", include the hardware such as OS or peripheral equipment.
Moreover, if using WWW system situation, then " computer system " it is (or aobvious also to provide environment comprising homepage Show environment).
Moreover, so-called " computer-readable recording medium " refers to, floppy disk, photomagneto disk, ROM, CD-ROM etc. are removable The storage devices such as medium, the hard disk for being built in computer system.Moreover, " computer-readable recording medium " also includes:Passing through As the order wire in the case of the communication line transmission program such as the networks such as internet or telephone line, during the short time Dynamically keep program person, the volatile memory for turning into server or the inside computer system of client in this case It is such, certain time keep program person.Moreover, said procedure both can be a part of person for realizing above-mentioned function, And then can also be can be by the combination of the program recorded in above-mentioned function and computer system come implementor.
More than, describe embodiments of the present invention in detail referring to the drawings, but specific structure is not limited to the embodiment party Formula, in addition to do not depart from the design alteration of the scope of idea of the invention etc..
Industrial applicability
The present invention relates to the power supply device to electrical load supply electric power, including:Power-converting device, will be from power supply The alternating electromotive force of supply is transformed to the direct current power of the 1st target voltage values and is supplied to the electrical load;Electrical storage device, with institute State electrical load and be parallel-connected to the power-converting device, discharge and recharge can be carried out;Charge-discharge controller, control charge and discharge Electricity so that the magnitude of voltage of the electrical storage device is the 2nd target voltage values;Target voltage values setup unit, by the electrical storage device Charge rate compared with threshold value, according to comparative result, increase and decrease at least one of the 1st target voltage values or the 2nd target voltage values.
According to the present invention, for and with electric power and electrical storage device discharged power equipment, can be according to equipment Running-active status efficiently controls discharge and recharge and carries out power supply.
Label declaration
1st, 1b wheeled cranes system
2 ground power supply equipment
2a power supply side-connectors
2b power subsystems
2c transformers
3rd, 3b crane main bodies
4 service cables
4a cable side-connectors
5 cable drums
90 loads
100th, 200 power supply device
101st, 201 AC/DC converters
111 electrical storage devices
112nd, 212 charge-discharge controller
121st, 221 timer

Claims (6)

1. a kind of power supply device, the electrical load supply electric power to regenerated electric power can be generated, including:
Power-converting device, the alternating electromotive force supplied from power supply is transformed to the direct current power of the 1st target voltage values and is supplied to The electrical load;
Electrical storage device, the power-converting device is parallel-connected to the electrical load, discharge and recharge can be carried out;
Charge-discharge controller, as be arranged on the power-converting device and the electrical load and the electrical storage device it Between charge-discharge controller, by being controlled so that the magnitude of voltage of the electrical load side of the charge-discharge controller For the 2nd target voltage values, the discharge and recharge of the electrical storage device is controlled;And
Target voltage values setup unit, by the charge rate of the electrical storage device compared with threshold value, in the charging of the electrical storage device Rate be it is more than the threshold value in the case of, increase and decrease at least the one of the 1st target voltage values or the 2nd target voltage values It is individual,
The target voltage values setup unit is set in the case where the charge rate of the electrical storage device is more than the threshold value It is fixed, increase and decrease at least one of the 1st target voltage values or the 2nd target voltage values so that the 2nd target voltage values More than the 1st target voltage values, and carry out the increase and decrease so that be more than the 1st target in the 2nd target voltage values The load is when being regenerated in the state of magnitude of voltage, between the power-converting device and the charge-discharge controller in Between magnitude of voltage be more than the 2nd desired value, the electrical storage device charges regenerated electric power.
2. power supply device as claimed in claim 1,
The electrical load can generate regenerated electric power,
The threshold value is set to subtract the storage unit institute of the regenerated electric power from the state of the full charge of the electrical storage device Below the charge rate obtained.
3. power supply device as claimed in claim 1,
The target voltage values setup unit makes the 2nd mesh when the charge rate of the electrical storage device is more than the threshold value Mark magnitude of voltage increases and is more than the 1st target voltage values.
4. power supply device as claimed in claim 1,
The target voltage values setup unit makes the 1st mesh when the charge rate of the electrical storage device is more than the threshold value Mark magnitude of voltage reduces and is less than the 2nd target voltage values.
5. power supply device as claimed in claim 1,
The electrical load is crane equipment,
In the case that the target voltage values setup unit does not have the electric power variation of the electrical load more than the stipulated time, make At least one of which of the charge or discharge of the electrical storage device stops.
6. a kind of power supply method of power supply device,
The power supply device includes:
Power-converting device, the direct current power that the alternating electromotive force supplied from power supply is transformed to the 1st target voltage values are supplied to energy Enough generate the electrical load of regenerated electric power;
Electrical storage device, the power-converting device is parallel-connected to the electrical load, discharge and recharge can be carried out;And
Charge-discharge controller, it is arranged between the power-converting device and the electrical load and the electrical storage device,
The power supply method includes:
Charge and discharge control step, control discharge and recharge so that the magnitude of voltage of the electrical load side of the charge-discharge controller For the 2nd target voltage values;And
Target voltage values setting procedure, by the charge rate of the electrical storage device compared with threshold value, in the charging of the electrical storage device Rate be it is more than the threshold value in the case of, increase and decrease at least the one of the 1st target voltage values or the 2nd target voltage values It is individual,
In the target voltage values setting procedure, in the case where the charge rate of the electrical storage device is more than the threshold value, Set, increase and decrease at least one of the 1st target voltage values or the 2nd target voltage values so that the 2nd target Magnitude of voltage is more than the 1st target voltage values, and carries out the increase and decrease so that is more than in the 2nd target voltage values described When the load is regenerated in the state of 1st target voltage values, the power-converting device and the charge-discharge controller Between intermediate voltage value be more than the 2nd desired value, the electrical storage device charges regenerated electric power.
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WO2014057739A1 (en) 2014-04-17
IN2015DN00649A (en) 2015-06-26
CN107857198B (en) 2020-03-03
JP2014079051A (en) 2014-05-01

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