CN102738844A - Line-interactive power control system - Google Patents
Line-interactive power control system Download PDFInfo
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- CN102738844A CN102738844A CN2011100952364A CN201110095236A CN102738844A CN 102738844 A CN102738844 A CN 102738844A CN 2011100952364 A CN2011100952364 A CN 2011100952364A CN 201110095236 A CN201110095236 A CN 201110095236A CN 102738844 A CN102738844 A CN 102738844A
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Abstract
The invention discloses a line-interactive power control system which is applied to an external element. The line-interactive power control system comprises at least a power converter, a plurality of charge-discharge controllers, an external element control unit, and a microcontroller. The power converter converts an input power to output at least a converted voltage. The plurality of charge-discharge controllers charges a first storage battery and a second storage battery according to the converted voltages. The external element control unit controls the external element according to the converted voltages, or the first storage battery and the second storage battery. The microcontroller detects a state of the line-interactive power control system, controls the plurality of charge-discharge controllers, to adjust the first and the second storage batteries' power supply for the external element control unit.
Description
Technical field
The present invention relates to a kind of online interaction formula (Line-Interactive) power control system; Especially the external multiple different input power supplys of a kind of ability of finger are changed; And through charging-discharging controller to outward element power supply and storage battery is discharged and recharged control and management; Improving the storage battery service efficiency with life-span and control and protect storage battery, and can increase redundant electric power system service time, and then keep the online interaction formula power control system of electronic equipment operating mechanism.
Background technology
Because it is its power source that drives electronic component that many electronic equipments all adopt DC power supply; But conventional electric power standby system major part is to adopt AC power to convert DC power supply at present; And then convert AC power to by DC power supply; Last again through the transformer of equipment end, convert AC power into DC power supply again, electronic equipment is provided the electric power of running.Simultaneously, at present the conventional electric power standby system mostly is used for the master with indoor, and the electric power standby system of outdoor electrical equipment is relegated to the category of things wanting.
Owing to passed through the conversion that repeatedly exchanges with DC power supply, cause the consume of redundant electric power resource after repeated multiple times interchange and direct current conversion of storage battery, wasted the expensive electric power resource of redundant electric power.Illustrate; The electrical efficiency of supposing the DC power supply of AC power conversion for the first time remains 85～90% approximately; The DC power supply electrical efficiency approximately surplus 80～90% that converts AC power to for the second time; The electrical efficiency of the last conversion of AC power for the third time DC power supply remains 85～90% approximately, so the actual power supply that obtains of back end electronics is about 57.8% (85%*85%*85%=57.8%) of initial power supply.
Moreover; The conventional electric power standby system is main with centralized power supply framework, and the electric power that can supply is subject to the battery capacity and the spatial constraints of being arranged in pairs or groups, not only the electronic equipment but also the concentrations of its running that couples; But when starting running together, needs the same time a large amount of power consumptions; Need to design with the heavy-current discharge mode so cause, obviously influence power supply benefit also causes power-on time therefore to shorten rapidly, run into main power interruptions after; The non-firm power of several minutes or several hours often can only be provided, let the electronic equipment can normal operation.When causing, natural factors such as earthquake, typhoon disaster caused by a windstorm, floods, thunderbolt have a power failure or power plant's fault outage or power failure etc. that other different factors cause; Often interruption duration can surpass more than 3 hours; When this moment, the conventional electric power standby system was brought into play effect just; But the conventional electric power standby system can't be brought into play to have and not interrupt providing electronic equipment electric power running effect because power-on time is too short.
With regard to actual outdoor system use aspect; Such as intersection monitoring system, road traffic lights system, highway detection system, emergency broadcast system ... wait public service system; When mains-supplied is interrupted; These distributings set up electronic equipment, more need the supply of urgent redundant electric power, with the benefit of bringing into play its running and the function of lasting public service.
With regard to actual indoor heating system application facet; General businessman or silverware shop or department stores, even be the household and company's row number, its relevant business equipment and supervision video equipment also shut down in the lump when having a power failure; But in case of emergency, but there is not effective supplementary measures subsystem or technology.
In addition; The conventional electric power standby system is if not big system equipment or the design of exclusive special applications mostly can't provide than effective power management mechanism; Can't be to the behaviour in service of storage battery and equipment; Carry out the control and management of effectively charge or discharge out of the ordinary or load operation, cause life-span that recycles of storage battery therefore to reduce or caused permanent damages, improve user's use cost burden indirectly because of storage battery is under the low-voltage state for a long time.
Summary of the invention
Therefore, in order to address the above problem, one of the object of the invention is a kind of online interaction formula (Line-Interactive) power control system of DC power supply DC power to be provided, can directly to adopt DC power supply as power source.
One of the object of the invention is that a kind of online interaction formula power control system is being provided, but distributing sets up and the far-end remote control management, and adopts the redundant electric power system of the current discharge of multiple power source and distributed system.
One of the object of the invention; Be that a kind of online interaction formula power control system is being provided; Can be with AC power through once converting DC power supply into; Reach the redundant electric power supply control system and only need carry out the primary power source conversion, both can directly DC power supply be provided, and reduce the unnecessary repeatedly interchange or the electric energy consume of direct current conversion electronic equipment.
One of the object of the invention is that a kind of online interaction formula power control system is being provided, can be through the DC power supply that green energy resource provided, and carry out the charging of redundant electric power and continue long-acting electric power to be provided DC electronic equipment.
One of the object of the invention is that a kind of online interaction formula power control system is being provided; Can carry out operating mechanisms such as electric power detection, voltage judgement and switching controls to multiple different classes of input power supply through microcontroller; Reach the polynary input of redundant electric power with charging and the stable benefit that discharges and recharges; And prolong electronic equipment service time and the capacitance of storage that increases the redundant electric power system, and then stablely power supply is provided and effectively uses the input power supply.
One of the object of the invention; Be that a kind of online interaction formula power control system is being provided; Carry out battery tension and the judgement of outward element load current through microcontroller; Storage battery is carried out different voltage chargings, storage battery is not charged, the voltage of storage battery just judged with decision charging priority ordering, the protection of charging cut-ff voltage, crossed low pressure and stop operating modes such as charge protection and discharge cut-off voltage protection, the protection of minimum termination discharge voltage, to improve storage battery service efficiency and the protection that storage battery is operated.
One of the object of the invention is that a kind of online interaction formula power control system is being provided, and the operating modes such as voltage judgement, discharge cut-off voltage protection and the protection of minimum termination discharge voltage of arranging in pairs or groups are to increase storage battery useful life and storage battery is operated protection.
One of the object of the invention; Be that a kind of online interaction formula power control system is being provided, through independent current source conversion, charge independence, and parallel way integrate discharge mechanism, can be according to user demand at least one storage battery of arranging in pairs or groups; Performance systems organization benefit is to save energy cost.
One of the object of the invention; Be that a kind of online interaction formula power control system is being provided, can be according to the discharge and the charge characteristic of different batteries, to judge the variety classes storage battery; Carry out charge and discharge mode control again and switch, reach storage battery optimal charge method and benefit different charge modes.
One of the object of the invention is that a kind of online interaction formula power control system is being provided, and the civil power that can an external street lamp or the DC power supply of other general civil powers or green energy resource etc. are as one of which input power supply.
One of the object of the invention; Be that a kind of online interaction formula power control system is being provided, can receive multiple DC power supply input simultaneously, as one of which redundant input power supply with different ports port form; With to the power supply of charge in batteries or outward element end, Ethernet power supply port for example.
One of the object of the invention; Be that a kind of online interaction formula power control system is being provided; The multiple DC power supply input of reception capable of using with different ports port form; As the mutual redundant input power supply of different system equipment room, with to charge in batteries or outward element power supply, for example Ethernet power supply port.
One of the object of the invention; Be in that a kind of online interaction formula power control system is provided, applicable at least one outward element, through microcontroller, charging-discharging controller, and storage battery couple discharge; Reach supply power voltage to outward element, and tool voltage stabilizing and anti-surging effect.
One of the object of the invention; Be that a kind of online interaction formula power control system is being provided; Can be according to the powering mode of street lamp civil power, a kind of do not interrupt electronic equipment running and long-acting redundant electric power system are provided, and high-low temperature resistant, high power capacity through following storage battery, reach high cycle battery life characteristic; Add the application of the DC power supply DC power of green energy resource, and through the long-acting redundant electric power system of the distributing that is set up in street lamp, solve the problem that outdoor electrical equipment obtains the power supply difficulty.
One of the object of the invention; Be that a kind of online interaction formula power control system is being provided; The electric power system of safety and effectivity redundant can be provided; Through explosion-proof high-low temperature resistant battery technology, the combining with green energy easily DC power system set up characteristic, can be supplied to electronic equipment tool safety and long-acting redundant electric power system.
One embodiment of the invention provide an a kind of online interaction formula power control system that is applicable at least one outward element, comprise at least one power supply changeover device, a plurality of charging-discharging controller, at least one outward element control unit, at least one power source switch control unit, a microcontroller and at least one charge mode switch control unit.One power supply changeover device is changed at least one input power supply, to export at least one changing voltage; Charging-discharging controller is coupled to power supply changeover device, and according to changing voltage one first storage battery and one second storage battery is discharged and recharged; The outward element control unit is coupled to power supply changeover device, and according to changing voltage or first or the electric power that provided of this second storage battery to outward element power supply and control; The power source switch control unit is coupled to power supply changeover device, with the source of the input power supply of switching power converter, and selects to outward element control unit, outward element, charging-discharging controller and storage battery power supply to be provided; Microcontroller detects the state in the online interaction formula power control system, and source, power supply classification and a priority of control input power supply, switches and voltage transitions to import power supply; Micro controller control this a plurality of charging-discharging controllers, with adjust this first and a power supply mechanism of this outward element control unit of this second couple; The charge mode switch control unit is coupled to power supply changeover device and charging-discharging controller, detects, reaches the result that other electricity characteristics detect according to discharge examination, the charging of microcontroller to those storage batterys, selects a charge and discharge mode; Wherein, power supply mechanism detects the state of power supply changeover device and switch control unit according to microcontroller, and outward element, this first storage battery and this second storage battery are discharged and recharged and start/control of interrupt power.
The online interaction formula power control system of the embodiment of the invention is avoided being supplied power and charge by single power supply, and reaching increases redundant electric power system service time and implement the invention workability, and the lifting that improves being utilized property of green energy resource and storage battery service efficiency.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute qualification of the present invention.In the accompanying drawings:
Fig. 1 is the sketch map of online interaction formula power control system one embodiment of the present invention;
Fig. 2 A is the operating mode that the lead acid accumulator of one embodiment of the invention discharges under room temperature;
Fig. 2 B is the operating mode that the lithium class storage battery of one embodiment of the invention discharges under room temperature;
Fig. 3 is the sketch map of online interaction formula power control system one embodiment of the present invention;
Fig. 4 is the sketch map of online interaction formula power control system one embodiment of the present invention;
Fig. 5 is the sketch map of online interaction formula power control system one embodiment of the present invention;
Fig. 6 is the sketch map of online interaction formula power control system one embodiment of the present invention.
Drawing reference numeral:
100,300～600 online interaction formula power control systems
11,12,13 power supply changeover devices
21,22 outward elements
31,32 outward element control units
41c, 42c, 43c charging-discharging controller
51 far-end control ports
61 temperature detecting units
71 power source switch control units
72 charge mode switch control units
88 accumulator cell charging and discharging protective circuits
89 conversion electric power commutation circuits
99 microcontrollers
B1, B2, B3 storage battery
The IV1 AC power
The IV2 DC power supply
The IV3 Ethernet supplies DC power supply
OV1, OV2, OV3 direct voltage
201～203 empty frames
302 civil power ammeters
401 road lamp power supply control cabinets
Embodiment
For making the object of the invention, technical scheme and advantage clearer, the embodiment of the invention is explained further details below in conjunction with accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as to qualification of the present invention.
See also Fig. 1, Fig. 1 is the sketch map of online interaction formula of the present invention (Line-Interactive) power control system 100 1 embodiment.Online interaction formula power control system 100 comprises power supply changeover device 11,12,13, outward element 21,22, outward element control unit 31,32, charging- discharging controller 41c, 42c, 43c, far-end control port 51, temperature detecting unit 61, power source switch control unit 71, charge mode switch control unit 72, accumulator charging/discharging circuit 88, power source conversion commutation circuit 89 and a microcontroller 99; And the charging-discharging controller 41c of online interaction formula power control system 100,42c, and 43c, respectively with microcontroller 99, power supply changeover device 11,12,13, outward element control unit 31,32, and storage battery B1, B2, B3 couple.
Through online interaction formula power control system 100; The power supply that the user can obtain according to the terrain environment; Take AC power IV1 or DC power supply IV2 or mutual Ethernet to supply DC power supply (Powerover Ethernet; POE) IV3 is with the source as at least one input electric power.
Online interaction formula power control system 100 utilizes separately independently charging-discharging controller 41c～43c design; Detect, judge, reach optionally charge and discharge mechanism through microcontroller 99; Can be according at least one input power source conversion power condition; To outward element 21,22 and storage battery B1～B3, carry out management of various modes charge and discharge and control, and storage battery B1～B3 is carried out charge and discharge protecting; Not only can increase storage battery B1～B3 life-span and efficiency for charge-discharge, also can make online interaction formula power control system 100 have crisis management and the adaptability to changes of taking precautions against natural calamities.
For the storage battery B1～B3 that stores redundant electric power; The user can be according to electronic equipment electrification characteristic demand; Adopt the voltage and the flash-over characteristic of different types of storage battery, variety classes storage battery; In other words, storage battery B1～B3 does not need with a kind of specification, adjusts its employed charge mode and charging circuit switching direction through manual adjustment microcontroller 99 or by microcontroller 99 according to detecting storage battery B1～B3 characteristic again; Let storage battery B1～B3 obtain optimal charge pattern and optimal charge protected mode, reach the high benefit that discharges and recharges of different charging voltages and electric current.
In the present embodiment, power supply changeover device 11,12,13 couples at least one input power supply respectively, changes to export at least one changing voltage according to the input power supply.Wherein, power supply changeover device 11 is coupled to an AC power IV1, changes out direct voltage OV1 through power supply changeover device 11; Power supply changeover device 12 is coupled to a direct current power supply IV2, changes out direct voltage OV2 through power supply changeover device 12; Power supply changeover device 13 is coupled to an Ethernet and supplies DC power supply IV3, changes out direct voltage OV3 through power supply changeover device 13.
Input electric source modes of being arranged in pairs or groups because of power supply changeover device 11,12 and 13 and voltage height are different; So the voltage of the DC power supply that is produced and electric current can be variant; So online interaction formula power control system 100 can pass through 99 pairs of voltage characteristics of microcontroller, current characteristics, waveform, frequency and other power supply characteristics one of which at least, detects judgement.Power source switch control unit 71 is coupled to power supply changeover device 11,12,13 and microcontroller 99 respectively again; Switch so carry out electric power, make online interaction formula power control system be able to the direct voltage OV1 after the conversion, OV2, reach the program that OV3 switches through microcontroller 99 control power source switch control units 71.
In addition, the power source of power supply changeover device 11～13 can be with a kind of power supply, but the present invention should also not can be multiple power supply and import simultaneously as limit.Illustrate, AC power IV1 converts the voltage 18V behind the DC power supply OV1 into, and the direct voltage OV1 after conversion this moment has than stable properties, for example: the voltage of direct voltage OV1 is 17.8V～18.2V; Green energy resource again; For example to convert the voltage behind the direct voltage OV2 to be 18V to the DC power supply IV2 through solar cell; But when actual operation, can because of solar cell with the different at any time changing condition of intensity of sunshine, so though voltage instability but still in the range of nominal tension; But have frequent height voltage fluctuation characteristic, for example: the voltage of direct voltage OV2 is 15.5V～18.5V; Voltage behind the DC power supply conversion dc voltage OV3 that imports through Ethernet power supply port is 18V; Because of belonging to the redundant power source; But the virtual voltage scope is about 17V～17.8V; But many with respect to the solar cell dc voltage stability, so microprocessor 99 can be judged power source through above-mentioned Characteristics Detection.
Please note at this; To different input voltages; Be AC power IV1, DC power supply IV2, Ethernet confession DC power supply IV3 in the present embodiment; Its power supply changeover device 11～13 can have at least one boosting or/and the changing voltage circuit (figure do not show) of at least one step-down respectively, boosts or the demand of step-down to provide.
In the present embodiment; Ethernet supplies DC power supply IV3 to supply power through an Ethernet power port; Also can reciprocally directly supply power to other Ethernet power ports or the external unit of Ethernet power supply by direct voltage OV3; Illustrate, when AC power IV1 and DC power supply IV2 can't supply power, can supply DC power supply IV3 that direct voltage OV3 is supplied power to online interaction formula power control system 100 through Ethernet; When AC power IV1 and Ethernet supply DC power supply IV3 to supply power; The direct voltage OV2 that can be changed through DC power supply IV2; Utilize power source switch control unit 71 to convert direct voltage OV2 to direct voltage OV3 through microcontroller 99 and be supplied to power supply changeover device 13; By power supply changeover device 13 direct voltage OV3 is passed through the path that Ethernet supplies DC power supply IV3 again, power supply is to other Ethernet power ports or the external unit of Ethernet power supply.
Carry out electric power transfer through Ethernet, can be divided into two generic ports, one of which is the feeder ear port, and it two is the receiving end port; In the present embodiment, Ethernet supplies DC power supply IV3, is equivalent to an Ethernet receiving end port, can insert power supply through an outside Ethernet power supply side port; In the present embodiment, another Ethernet power port is then played the part of the feeder ear port, according to power source switch control unit 71 and switch controller of power supply 13, changes out electric power output, is Ethernet feeder ear port.
The outward element 21,22 of online interaction formula power control system 100; In the present embodiment, be respectively coupled to outward element control unit 31,32, and by 31,32 controls of outward element control unit; Comprise voltage, electric current, load protection, unlatching/interrupt switch etc.; So outward element control unit 31 and 32 testing results according to microcontroller 99 are with the power supply unlatching/interruption of decision outward element 21 and 22.
Note that at this outward element control unit 31 or 32 for separately independently, in the time of can avoiding arbitrary outward element 21 or 22 faults or short-circuit state to take place, produces the normal operation to other outward elements.
Outward element control unit 31 and 32 is coupled to power supply changeover device 11,12 respectively, reaches 13; The electric power that direct voltage OV1 or OV2 after the conversion or OV3 or storage battery B1 or B2 or B3 are provided; Outward element 21,22 is supplied power, make outward element control unit 31,32 be able to control outward element 21,22.
In other words; When external input power supply is in not off-position; Outward element control unit 31,32; Can receive the DC power supply that direct voltage OV1 or OV2 or OV3 after the conversion are provided, and, control the power supply of outward element 21,22 according to building the setting of software program or user's operation in the microcontroller 99.Accordingly; Supply DC power supply IV3 if when being in the interruption of power supply state at the AC power IV1, DC power supply IV2, Ethernet of input; Then change by storage battery B1 or B2 automatically or B3 supplies power separately or parallelly connected sharing mode power supply; Guaranteeing that outward element control unit 31,32 can have enough electric power to offer outward element 21,22, and control.
In addition, when the AC power IV1 of input is in the interruption of power supply state (for example the street lamp civil power is in power down mode), supply DC power supply IV3 to supply power by DC power supply IV2 or Ethernet.The charging demand of outward element 21,22 and storage battery B1, B2, B3 if the DC power supply institute supply of current of input can't be loaded simultaneously; Microcontroller 99 will start safeguards the running defence program; Interruption is charged to storage battery B1, B2, B3, and thus, electric power can keep to outward element control unit 31 and to outward element 21,22 provides electric power; When treating that street lamp civil power or civil power alternating current restore electricity, continue again storage battery B1, B2, B3 are charged.
When the AC power IV1 of input is in the interruption of power supply state; It is main input power supply that its input power supply supplies DC power supply IV3 by DC power supply IV2 or Ethernet; In other words, DC power supply IV2 or Ethernet confession DC power supply IV3 is the DC power supply of redundant input.Can't deal with the charging demand of outward element 21,22 and storage battery B1, B2, B3 simultaneously when input DC power IV2 institute supply of current; Microcontroller 99 will start safeguards the running defence program; To import power supply switches to Ethernet by DC power supply IV2 and supplies DC power supply IV3 mode to operate; If still can't deal with the charging demand of outward element 21,22 and storage battery B1, B2, B3 simultaneously; Microcontroller 99 will start once more safeguards the running defence program, interrupt storage battery B1, B2, B3 are charged, only with electric power offer outward element control unit 31 with to outward element 21,22; When treating the street lamp civil power or recovering the civil power ac-powered, recover again storage battery B1, B2, B3 are charged.
Illustrate; Through street lamp with set up solar energy system; And the formed mutual redundant electric power system of supplying power of collocation Ethernet, surpass the power supply capacity time that solar electric power supply system designed when the continuous overcast and rainy time, if there is not the electric power system that switches to the mutual redundant of Ethernet; Under continuous overcast and rainy situation on daytime, frame will cause and can't operate in road lamp electric equipment because of non-transformer or brownout; If switch to the mutual redundant electric power system of Ethernet, just can solve the powerup issue under special weather of this type and the special emergency situation.
Storage battery B1, B2 and the B3 of online interaction formula power control system 100; In the present embodiment; Control by charging-discharging controller 41c, 42c, 43c respectively; To the relevant protection mechanisms such as charging voltage, charging current, discharge voltage, discharging current, charging cut-ff voltage, discharge cut-off voltage protection and the protection of minimum termination discharge voltage of storage battery B1, B2 and B3,, take the program of due reply according to the running instruction of building software program in the microcontroller 99.Accordingly; Independently charging-discharging controller 41c, 42c and 43c separately; According to the software program of building in the microcontroller 99; Get rid of storage battery B1, B2 and B3 are carried out different voltage chargings, charging, high-low pressure charging priority ordering, cross low pressure and stop operating modes such as charge protection and the protection of minimum termination discharge voltage, to improve storage battery service efficiency and protection the storage battery running.
Charging-discharging controller 41c～43c; Take independent charge-discharge control system pattern and be respectively coupled to storage battery B1～B3; Owing to have charge independence and independent discharge or the common flash-over characteristic of parallel way between charging-discharging controller 41c～43c; Can not cause fault or short circuit, make charging-discharging controller 41c～43c fault, discharge and recharge benefit so can reach protection and the increase of storage battery B1～B3 because of storage battery B1～B3 specification difference or property difference.
Please note at this; Because the running of discharge cut-off voltage protection and the protection of minimum termination discharge voltage; Its running opportunity is that storage battery B1, B2, B3 are because of parallelly connected direction formula discharge; And satisfying the discharge cut-off voltage value that microcontroller 99 sets, microcontroller 99 will be controlled outward element control unit 31 and 32 pairs of outward elements 21 and 22 interruption of power supply automatically this moment, but storage battery B1, B2, reach B3 still to microcontroller 99 continued powers.When storage battery B1, B2, and B3 parallel connection direction formula continued power give microcontroller 99; All parallelly connected storage battery B1, B2, and the cell voltage of B3 drop to the minimum termination discharge voltage value that microcontroller 99 sets; Microcontroller 99 will cut out all runnings of online interactive power control system 100 automatically, with protection storage battery B1, B2, and B3 because of brownout but still the situation of the permanent damage that continuous discharge was produced take place.
Note that at this storage battery B1 of the present invention, B2, B3 can be lead acid accumulator, lithium class storage battery and cadmium-nickel storage cell etc., but the present invention should also can not realized as limit by the various storage battery that develop future.
So charging-discharging controller 41c, 42c, and 43c can detect the characteristic of charging under the characteristic of charging under the characteristic of discharging under characteristic that storage battery B1, B2 and B3 discharge when the room temperature or the high low temperature or the room temperature or the high low temperature or the characteristic of other different size storage batterys via microcontroller 99; Judging storage battery B1, B2 and B3 kind, and through charge mode switch control unit 72 adjustment charging-discharging controller 41c, 42c, reach 43c to storage battery B1, B2, the charge mode (for example: pulse mode is charged or linear mode charges) that reaches B3, charging voltage, charging current, charging method, charging rate, charging interval ... etc.
Palpus attention person, different types of storage battery needs different charge modes, and the present invention can make corresponding charging control to different batteries.Among one embodiment, suppose that storage battery B1 can be the lead acid accumulator of 12V, storage battery B2 can be 12V lithium class storage battery; Please consult Fig. 2 A and Fig. 2 B simultaneously; Fig. 2 A shows the operating mode that lead acid accumulator discharges under room temperature, Fig. 2 B shows the operating mode that lithium class storage battery discharges under room temperature, wherein; Abscissa shows the load operation time (T), and ordinate shows load voltage (V).
Because lead-acid battery is when discharge; The very average phenomenon of the magnitude of voltage decline of its load voltage; So it is preceding in lead-acid battery discharge latter stage (when this moment, charge capacity remained 5～10% electric weight approximately); Magnitude of voltage decrease speed and load service time, present identical fall (shown in empty frame 201) to equal proportion; Lithium class battery is then when the initial stage of discharge; The magnitude of voltage decline of load voltage is phenomenon (shown in empty frame 202) very slowly; But at load discharge latter stage (when this moment, charge capacity remained 5～10% electric weight approximately); Magnitude of voltage is decrease speed very fast (shown in empty frame 203) but, so the magnitude of voltage decrease speed difference at the discharge latter stage of lithium class battery and initial stage is quite big, the voltage decrease speed can reach about more than 10 times.
In addition; Online interaction formula power control system 100 comprises temperature detecting unit 61; In the present embodiment; Temperature detecting unit 61 is respectively to the placement space of storage battery B1～B3, and the motherboard superjacent air space of online interaction formula power control system 100 or other can produce the element of heat energy, to carry out temperature detection.The temperature data of being obtained when temperature detecting unit 61 transfers to microcontroller 99; Judge by the software program of building in the microcontroller 99 this moment; When if temperature is too high, microcontroller 99 decisions are interrupted charging-discharging controller 41c, 42c, 43c or outward element control unit 31,32 or the discharge of outward element 21,22 are controlled ... supervisor; But when temperature be reduced to online interaction formula power control system 100 when defining the safe operation temperature, recover to carry out the 100 due functions of the equipments runnings of online interaction formula power control system again.Thus, online interaction formula power control system 100 is through the temperature detection management control of microcontroller 99, and the power supply running of storage battery at particular surroundings use and outward element further protected in the effectively normal operation of the power control system of protection own.
So microcontroller 99 can be with measured temperature information; The characteristic of charging under characteristic of charging under characteristic of discharging under characteristic of discharging when the room temperature according to storage battery B1～B3 or the high low temperature or the room temperature or the high low temperature; For example: storage battery B1 and B2 are carried out after the short time discharges and recharges detection in advance the charge mode to storage battery B1 and B2 (for example: pulse mode is charged or linear mode charges) of decision charging-discharging controller 41c and 42c.
When off-position not; AC power IV1 or DC power supply IV2 or Ethernet that power supply changeover device 11 or 12 or 13 will be imported power supply supply DC power supply IV3 to convert direct voltage OV1 or OV2 or OV3 to; Provide so that outward element control unit 31,32 is carried out electric power, storage battery B1, B2, B3 then carry out charge in batteries through charging-discharging controller 41c, 42c, 43c.
Fig. 1 is consulted in R. S. V. P.; Charging-discharging controller 41c, 42c, and 43c, according to building software program in the microcontroller 99, to storage battery B1, B2, and B3 carry out the charging running of associative mode; Get rid of to carry out different voltage chargings, charge in batteries storage battery, the charge capacity of storage battery just determines to charge priority, the protection of charge in batteries cut-ff voltage, storage battery stop charge protection because of brownout; Illustrate, for example: charge in batteries is got rid of for the load voltage of storage battery B1 is 12.9V, surpasses the preset charging load magnitude of voltage that ends; So belong to full state during storage battery B1, get rid of storage battery B1 and charge; If the load voltage of storage battery B3 is 6.8V, be lower than preset trouble accumulator load voltage value, storage battery B3 belongs to malfunction, gets rid of storage battery B3 and charges.
In addition, in one embodiment, earlier the lower storage battery of charge capacity is charged, storage battery B1 and B2 carry out charge capacity earlier relatively, as if storage battery B2 with respect to storage battery B1 for being in low-voltage state, then storage battery B2 preferentially charges.Illustrate, when power down mode termination (city power recovery power supply), storage battery B3 load voltage at this moment is 10.6V; Storage battery B1, B2, and its voltage of B3 be minimum, cause permanent damages for avoiding storage battery B3 because of brownout, microcontroller 99 control charging-discharging controller 43c; Preferentially storage battery B3 is charged; After the load voltage of treating its storage battery B3 returns back to the charging cut-ff voltage, the load voltage that carries out storage battery B1, B2 and B3 for the second time more relatively, to determine new charging order.
Thus, above-mentioned method all can improve storage battery service efficiency and the protection that storage battery B1～B3 is operated.
Note that the charging of recovery electric power high-low pressure priority ordering and different voltage charging operating modes at this, is special to being designed by the road lamp power supply supply when importing power supply, through the uniqueness running charge mode of online interaction formula power control system 100.
When off-position, storage battery B1, B2, and B3 then through charging-discharging controller 41c, 42c, and 43c carry out the independent or parallelly connected direction formula discharge of storage battery, output dc voltage OV1～OV3 to outward element control unit 31, and 32 supply power.
Charging-discharging controller 41c, 42c, and 43c; Software program according to microcontroller 99; To storage battery B1, B2, and B3 carry out the discharge prevention of associative mode, comprise discharge cut-off voltage protection, the protection of minimum termination discharge voltage, stop outward element 21,22 discharges ... etc.Wherein, the discharge prevention of microcontroller 99 comprises discharge cut-off voltage protection and minimum termination discharge voltage protection, illustrates; The voltage of the discharge cut-off voltage protection of presetting as the user is 11.5V; The voltage of minimum termination discharge is 11V, if the load voltage of storage battery B3 is 11.4V, has been lower than by protection voltage; But do not reach the voltage 11V of minimum termination discharge as yet, therefore no longer outward element 21 or 22 is supplied power; If the load voltage of storage battery B3 is 10.9V, be lower than the voltage of minimum termination discharge, so the time storage battery B3 be set to no longer discharge, avoid storage battery B3 because of the brownout permanent damages.
Please note at this; When off-position; Storage battery B1～B3 takes the common discharge of parallel connection operating mode, is to be designed by the road lamp power supply supply to device power supply (DPS) especially, through the uniqueness running discharge mode of online interaction formula power control system 100; Can prolong electronic equipment and in the daytime during interruption of power supply, prolong the redundant power supply time at street lamp.
Generally speaking; Power supply changeover device 11,12, and 13 with power source switch control unit 71 respectively according to the signal of microcontroller 99; Adjustment changing voltage and selection input power supply; To provide stable and to meet voltage and the electric current of outward element control unit 31,32 and charging-discharging controller 41c, 42c, 43c, make outward element 21,22 and storage battery B1, B2, B3 acquisition optimum load voltage, charging voltage and charging current.But because under the special statuss such as circuit loss or supply power voltage shakiness or the generation of burst large current load; Cause the brownout or the shakiness of giving charging-discharging controller 41c or 42c or 43c supplying with; Cause charging voltage be lower than storage battery B1 or, B2 or B3; Or the unstable situation of charging voltage takes place, then online interaction formula power control system 100 can close charging-discharging controller 41c or, 42c or 43c.In other words, microcontroller 99 may command charging-discharging controller 41c, 42c, 43c do not charge under this situation, to avoid excessive or voltage instability or brownout because of burst current, cause the overheated and situation about damaging of storage battery.Therefore, the present invention has crisis management and takes precautions against natural calamities adaptability to changes.
When power supply changeover device 11～13 all can't provide changing voltage; Storage battery B1 or, B2 or B3 can give microcontroller 99 through charging-discharging controller 41c～43c automatic power; Microcontroller 99 is judged storage battery B1, B2, B3 voltage condition according to detecting; Take the program of discharge cut-off voltage protection and minimum termination discharge voltage protection mechanism earlier, according to being in the storage battery quantity under the up state, outward element 21～22 is carried out separately in decision or parallel way is supplied power to outward element control unit 31,32 again; So can guarantee the normal operation of outward element 21,22; All be discharged to the magnitude of voltage that cut-ff voltage is protected up to all storage batterys, microcontroller 99 will lose electric power automatically with outward element 21,22 and can't operate at this moment, thus; Can keep the longest running time of online interactive power control system 100; Avoid storage battery B1, B2 simultaneously, reach B3 when losing charge power supply,, cause storage battery B1, B2, B3 to cause battery permanent damages or blast equivalent risk because of chemical action produces heat energy because of the charge-discharge characteristic generation mutually of height voltage difference.
Please note at this; The circuit design of online interaction formula power control system 100 adopts standalone module charging separately; Parallel way discharge when off-position not, standalone module is controlled discharge separately when off-position, can be separately or parallel way integrate and discharge; So that outward element control unit 31,32 is supplied power; Guarantee the normal operation of outward element 21,22, supply by general mains powered and road lamp power supply owing to import power supply, so can bring into play the Application Design of maximum operation effect.
The far-end control port 51 of online interaction formula power control system 100; In the present embodiment; Except carry out far-end control through the specification of general RS-232 or RS-485, supply the RJ-45 port of DC power supply to carry out long distance network through Ethernet simultaneously and link, reach the far-end remote control purpose.In addition; Power-supply system manager or user; Can carry out far-end control through computer; Such as the situation that microcontroller 99 detected, judges, controls, carries out all can obtain data by 51 of far-end control ports, and by the running of user at remote controller 51 remote control online interaction formula power control systems 100.
The power source switch control unit 71 of online interaction formula power control system 100; In the present embodiment; Power source switch control unit 71, power supply changeover device 11,12,13, outward element control unit 31,32, and charging-discharging controller 41c～43c couple; Change by 71 pairs of power source switch control units input power supply (AC power IV1, DC power supply IV2, and Ethernet supply DC power supply IV3 one of which at least) respectively; Pass through 99 pairs of input voltages of microcontroller, input current, changing voltage, load current, waveform, frequency and other power supply characteristics one of which at least again; Carry out at least a detection and judgement, import direct voltage OV1 or OV2 or the OV3 entering online interaction formula power control system 100 that power supply is changed out with decision.
The charge mode switch control unit 72 of online interaction formula power control system 100; In the present embodiment; Charge mode switch control unit 72; The one of which at least of charging voltage, charging current, load voltage, load current, discharge voltage, discharging current, waveform, frequency and other battery characteristics through 99 couples of storage battery B1 of microcontroller, B2, B3 then; Carrying out at least a detection judges; With the different charge modes that determine to take microcontroller 99 to set to storage battery B1, B2, B3; Comprise that pulse mode is charged, linear mode charges, the charging of different magnitude of voltage, different electric current charge and difference discharge and recharge management controls such as cut-ff voltage value, because of online interaction formula power control system 100 adopts charging-discharging controller 41c, 42c, the design of 43c independence charging-discharging controller, switch so charge mode switch control unit 72 can be simultaneously carries out charge and discharge mode at least a or more than one dissimilar storage battery B1, B2, B3.
The accumulator cell charging and discharging protective circuit 88 of online interaction formula power control system 100; In the present embodiment, be coupled to charging-discharging controller 41c, 42c, 43c and microcontroller 99, power source switch control unit 71, charge mode switch control unit 72 respectively.Accumulator cell charging and discharging protective circuit 88 is excessive in order to the protection discharging current; Cause storage battery B1～B3 excessive impaired because of electric current; Further, 88 pairs of battery discharging protective circuits are charging-discharging controller 41c, 42c, 43c independently, has directivity charging, charge independence and integration in parallel connection current discharge; Avoid because of charging-discharging controller 41c, 42c, 43c and storage battery B1, B2, the arbitrary fault of B3 or short circuit, cause the online interaction formula power control system 100 can't normal operation.
The power source conversion commutation circuit 89 of online interaction formula power control system 100 in the present embodiment, is coupled to power source switch control unit 71, power supply changeover device 11,12,13 and charging-discharging controller 41c, 42c, 43c and microcontroller 99 respectively.Power source conversion commutation circuit 89 in order to the supplier of electricity of the direct voltage OV1 after the switch transition or OV2 or OV3 to; For instance; When the input power supply (for example: AC power IV1) interrupt, power source switch control unit 71 can determine by direct voltage OV2 or OV3 come to outward element control unit 31,32, and charging-discharging controller 41c, 42c, 43c supply power.
The microcontroller 99 of online interaction formula power control system 100; In the present embodiment; Be responsible for all detections, judgement, control, execution, management, response supervisor; And,, detect, carry out, manage, control power supply changeover device 11,12,13, outward element control unit 31,32, charging-discharging controller 41c, 42c, 43c, power source switch control unit 71, charge mode switch control unit 72 etc. through the interior designed software program of building; Its detailed operation explanation is discussed in preceding text, gives unnecessary details no longer separately at this.
Please note at this; The online interaction formula power control system 100 of one embodiment of the invention; What disclosed is that unique software and hardware running design encounters problems with special protection circuit-mode and various practice application institute, proposes feasible solution, for the various power supply changeover devices that couple, outward element control unit, outward element, charging-discharging controller, storage battery, power source conversion switch control unit, charge mode switch control unit, detector unit, far-end control port etc.; Restriction only not can be single number; Designer and user can need according to the practice use, and increase and decrease quantity is to reach the present invention's purpose of dealing with problems.
For instance, wherein outward element 21 can be network switch, infrared ray projecting lamp, card-punching system, detection system, wireless device, monitor, burglary-resisting installation, fire-fighting equipment, traffic sign, the equipment of taking precautions against natural calamities, medical instruments and equipment ... etc.
In other words; Online interaction formula power control system 100 can be according to user's demand; Be coupled to and be external in various use direct current electronic equipments arbitrarily, and under the power failure situation, carry out powered by direct current by online interaction formula power control system 100, can normal operation to guarantee those electronic equipments.
See also Fig. 3, Fig. 3 is the sketch map of online interaction formula power control system 300 1 embodiment of the present invention.Wherein, the input power supply can be coupled to the power supply behind the civil power ammeter 302 of a street lamp, in other words; The input power supply can be coupled to the AC power of electric pole circuit; The user does not need the extra input power supply that provides, and all the other principles are same as described above, do not give unnecessary details separately at this for the sake of clarity.
See also Fig. 4; Fig. 4 is the sketch map of online interaction formula power control system 400 1 embodiment of the present invention; Wherein, The input power supply can be coupled to the power supply behind the civil power ammeter of a road lamp power supply control cabinet 401, and the difference of Fig. 3 and Fig. 4 mainly is the application feasibility that use is set up with regard to the substantive distributing.All the other principles are same as described above, do not give unnecessary details separately at this for the sake of clarity.
See also Fig. 5; Fig. 5 is the sketch map of online interaction formula power control system 500 1 embodiment of the present invention; Online interaction formula power control system 500 can be coupled to buildings in general civil power distribution board or arbitrary supply socket; To obtain stable and difficult AC power of interrupting, all the other principles are same as described above, do not give unnecessary details separately at this for the sake of clarity.
See also Fig. 6; Fig. 6 is the sketch map of online interaction formula power control system 100 1 embodiment of the present invention, and online interaction formula power control system 100 can be coupled to the DC power system of green energy resource; For example: sun-generated electric power, wind-force power supply, water conservancy power supply etc.; At present embodiment is that the DC power supply of solar energy is used as its input power supply, so online interaction formula power control system 600 can be arranged at meagrely-populated place, but the present invention should be as limit; All the other principles are same as described above, do not give unnecessary details separately at this for the sake of clarity.
In sum; Online interaction formula power control system utilizes the situation of each transducer of microcontroller monitoring, controller, control unit, switch unit and storage battery; To adjust the mode of its charge or discharge; And utilize multiple external direct current power supply (for example: wind-force power supply, sun-generated electric power, and Ethernet power supply ... etc.) or the combination of AC power; Avoid being supplied power and charge by single power supply, reaching increases redundant electric power system service time and implements the invention workability, and the lifting that improves being utilized property of green energy resource and storage battery service efficiency.
Above-described specific embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely specific embodiment of the present invention; And be not used in qualification protection scope of the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1. an online interaction formula power control system that is applicable at least one outward element is characterized in that, comprises:
At least one power supply changeover device is changed at least one input power supply, to export at least one changing voltage;
A plurality of charging-discharging controllers are coupled to said power supply changeover device, and according to said changing voltage one first storage battery and one second storage battery are discharged and recharged;
At least one outward element control unit is coupled to said power supply changeover device, and according to said changing voltage or said first or the electric power that provided of said second storage battery to said outward element power supply with control;
At least one power source switch control unit; Be coupled to said power supply changeover device; With the source of the said input power supply that switches said power supply changeover device, and select power supply to be provided to said outward element control unit, said outward element, said charging-discharging controller and said storage battery;
One microcontroller detects the state in the said online interaction formula power control system, and controls source, power supply classification and a priority of said input power supply, switches and voltage transitions to carry out said input power supply; Said micro controller is controlled said a plurality of charging-discharging controller, with adjust said first with said second storage battery to a power supply mechanism of said outward element control unit; And
At least one charge mode switch control unit; Be coupled to said power supply changeover device and said charging-discharging controller; Detect, reach the result that other electricity characteristics detect according to of discharge examination, the charging of said microcontroller, select a charge and discharge mode said storage battery;
Wherein, said power supply mechanism detects the state of said power supply changeover device and said switch control unit according to microcontroller, and said outward element, said first storage battery and said second storage battery are discharged and recharged and start/control of interrupt power.
2. online interaction formula power control system as claimed in claim 1 is characterized in that, said input power supply can comprise that an AC power or a direct current power supply or an Ethernet supply DC power supply.
3. online interaction formula power control system as claimed in claim 2; It is characterized in that; Said power supply changeover device comprises at least one boosting or the changing voltage circuit of at least one step-down, and said changing voltage is at least one to boost or the function of at least one step-down to provide.
4. online interaction formula power control system as claimed in claim 3; It is characterized in that; The voltage characteristic of the said changing voltage of said power source switch control unit foundation, current characteristics, waveform, frequency be one of which at least; Through the said conversion electric power commutation circuit of said microprocessor controls, a supplier of electricity that decides said changing voltage to.
5. online interaction formula power control system as claimed in claim 4; It is characterized in that; The changing voltage that said AC power or said DC power supply are changed out through said power supply changeover device has at least one difference; The voltage, electric current, waveform, frequency that said microcontroller detects said changing voltage is one of which at least, makes said power source switch control unit determine an order of said input power supply.
6. online interaction formula power control system as claimed in claim 4 is characterized in that, said order is that AC power is first preferential, and said DC power supply is second preferential, and it is the 3rd preferential that said Ethernet supplies DC power supply.
7. online interaction formula power control system as claimed in claim 4 is characterized in that, online interaction formula power control system comprises Ethernet power supply port, and said Ethernet power supply port can receive said input power supply or transmit said changing voltage.
8. online interaction formula power control system as claimed in claim 7 is characterized in that, said changing voltage can be to said first and second charge in batteries or to said outward element power supply.
9. online interaction formula power control system as claimed in claim 1 is characterized in that, said charging-discharging controller is for independence or parallel way are discharged separately.
10. online interaction formula power control system as claimed in claim 9; It is characterized in that; When said input power supply does not cut off the power supply; Said microcontroller according to said first with the voltage height of said second storage battery, through charging-discharging controller carry out that different voltage chargings, charging are got rid of, high-low pressure charging priority ordering, the protection of charging cut-ff voltage, cross low pressure stop charge protection and discharge cut-off voltage protection, and minimum termination discharge voltage protect the program of one of which at least.
11. online interaction formula power control system as claimed in claim 2; It is characterized in that; When said AC interruptions, said power source switch control unit switches to said DC power supply or said Ethernet supplies DC power supply to supply power, to avoid said input power interruptions.
12. online interaction formula power control system as claimed in claim 2; It is characterized in that; When the magnitude of current of said DC power supply input is not enough to power supply and uses for said outward element; The said charging-discharging controller of said microprocessor controls to said first with said second storage battery with parallel way, supply power, to said microcontroller, said outward element control unit, and said outward element supply power.
13. online interaction formula power control system as claimed in claim 12; It is characterized in that; Said first when reducing to the magnitude of voltage of cut-ff voltage protection voltage with the discharge voltage of said second storage battery, stops said microcontroller and the power supply of said outward element control unit.
14. online interaction formula power control system as claimed in claim 1; It is characterized in that; Said microcontroller detects with said second storage battery said first in a predetermined period, and said microcontroller carries out a discharge cut-off voltage to said first with said second storage battery according to testing result and protects the program of protecting with a minimum termination discharge voltage.
15. online interaction formula power control system as claimed in claim 1; It is characterized in that; When said input power up is supplied power; Behind said power supply changeover device changing voltage, directly microcontroller, said outward element control unit and said charging-discharging controller are given in power supply, to charge with said second storage battery to said first.
16. online interaction formula power control system as claimed in claim 2; It is characterized in that, said AC power can be coupled to a street lamp a mains supply or an indoor and outdoor distribution board civil power or a socket civil power or convert alternating current electric power to through a green energy resource.
17. online interaction formula power control system as claimed in claim 1; It is characterized in that; Online interaction formula power control system comprises at least one temperature detecting unit, is coupled to said microcontroller, and said temperature detecting unit detects an ambient temperature of said online interaction formula power control system.Wherein, Said ambient temperature comprises a battery temp or a motherboard temperature or space environment temperature; When said testing environment temperature surpasses microcontroller one dangerous preset temperature, said microcontroller will be forbidden said charging-discharging controller and outward element control unit, carry out the charge or discharge running; When treating that said ambient temperature promotes or be reduced to a safe preset temperature, recover to fill said discharge controller and the normal operation of said outward element control unit again.
18. online interaction formula power control system as claimed in claim 1; It is characterized in that; Online interaction formula power control system comprises a remote controller; Said remote controller is coupled to said microcontroller; And a user can pass through said remote controller, controls said microcontroller program software to adjust the running of said power supply changeover device, said charging-discharging controller, said outward element control unit, said power source switch control unit, said charge mode switch unit, said temperature detection Control Parameter.
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| CN2011100952364A CN102738844A (en) | 2011-04-15 | 2011-04-15 | Line-interactive power control system |
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Application publication date: 20121017 |