CN104578392A - Off-network type uninterruptible power supply - Google Patents
Off-network type uninterruptible power supply Download PDFInfo
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- CN104578392A CN104578392A CN201510036809.4A CN201510036809A CN104578392A CN 104578392 A CN104578392 A CN 104578392A CN 201510036809 A CN201510036809 A CN 201510036809A CN 104578392 A CN104578392 A CN 104578392A
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Abstract
The invention discloses an off-network type uninterruptible power supply. A single chip microcomputer control circuit, a mains supply voltage stabilization switching circuit and an output selection circuit are arranged in the off-network type uninterruptible power supply; in addition, in the working process of the uninterruptible power supply, the single chip microcomputer control circuit can perform automatic control over the mains supply voltage stabilization switching circuit and the output selection circuit, so input mains supply voltage can be switched automatically through the mains supply voltage stabilization switching circuit and mains supply working voltages corresponding to two mains supply voltage systems respectively are obtained, and the output selection circuit can selectively output the corresponding mains supply working voltage according to the mains supply voltage system selected by a user; accordingly, the uninterruptible power supply can achieve the function of double voltage inputs and double voltage outputs, has a global mains supply compatibility and high generality, and is beneficial to application and popularization; in addition, the uninterruptible power supply can achieve automatic switching in the process of working, so the phenomenon that the uninterruptible power supply is burned out due to mains supply input switching by manual work can be avoided.
Description
Technical field
The present invention relates to power technique fields, particularly relate to a kind of off-grid type uninterrupted power supply.
Background technology
Current global civil power is 120V and 220V, frequency 50HZ and 60HZ two kinds, and city's electrical quantity that various countries' electric equipment products use is also different, the particularly power supply of the configuration such as the electrical equipment of import and instrument and equipment, because supply city electrical quantity is different, and bring very large trouble, particularly maintenance aspect is extremely inconvenient.
Off-grid type uninterrupted power supply mostly in the market is the single output of single input (220V/50HZ or 120V/60HZ mains system) (220V/50HZ or 120V/60HZ) pattern, also single output (220V/50HZ or the 120V/60HZ) pattern of dual input (220V/50HZ and 120V/60HZ mains system is compatible) is had, but the output voltage of the uninterrupted power supply of these patterns only has one (120V or 220V), make its versatility not strong, be unfavorable for promoting the use of; In addition, these uninterrupted power supplys need the input of artificial conversion civil power, uninterrupted power supply can be electrically connected with city after user needs selecting properly voltage, and in transfer process and easily make mistakes and burn out uninterrupted power supply.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of off-grid type uninterrupted power supply, to solve the above-mentioned technical problem existed in prior art.
The embodiment of the present invention provides a kind of off-grid type uninterrupted power supply, comprising: single chip machine controlling circuit, civil power voltage stabilizing change-over circuit and output select circuit;
Described single chip machine controlling circuit comprises switch instruction electronic circuit, wherein, described switch instruction electronic circuit is used for its operation, the line voltage system needed for user being input to described single chip machine controlling circuit according to user, the line voltage of described single chip machine controlling circuit to the described uninterrupted power supply of input gathers, and send changeover control signal according to the effective value of the line voltage gathering gained to described civil power voltage stabilizing change-over circuit, described civil power voltage stabilizing change-over circuit carries out voltage stabilizing and conversion successively according to the line voltage of the described changeover control signal received to the described uninterrupted power supply of input, the civil power operating voltage corresponding respectively with two line voltage systems is obtained after conversion, one in wherein said two the line voltage systems line voltage system needed for user,
Described output select circuit is selected to export described civil power and is stablized that change-over circuit produces and corresponding with default line voltage system civil power operating voltage, described single chip machine controlling circuit gathers the described civil power operating voltage that described output select circuit exports, line voltage system needed for the civil power operating voltage of collection gained and user is compared, and export selection control signal according to comparative result to described output select circuit, described output select circuit is selected to export the civil power operating voltage corresponding with the line voltage system needed for user according to described selection control signal.
Further, described uninterrupted power supply also comprises: charging circuit, battery component and inverter circuit; Described charging circuit utilizes the line voltage of the described uninterrupted power supply of input to charge to described battery component, described battery component is connected with described inverter circuit, and the direct voltage that described battery component exports is transformed into alternating voltage and exports to described output select circuit by described inverter circuit.
Further, described single chip machine controlling circuit respectively to the charging voltage of described charging circuit with sample to the cell voltage of described battery component, and controls the size of the charging voltage of described charging circuit and the unlatching of described battery component or closedown according to the size of described cell voltage;
Described single chip machine controlling circuit is sampled to the alternating voltage that described inverter circuit exports, and controls the alternating voltage of described inverter circuit output according to the effective value of the alternating voltage of sampling gained.
Further, the alternating voltage of described inverter circuit output and the civil power operating voltage of described civil power voltage stabilizing change-over circuit output synchronously export to described output select circuit.
Further, described uninterrupted power supply also comprises: exchange output unit, wherein, described interchange output unit is connected with described output select circuit and described single chip machine controlling circuit respectively, selects the alternating voltage exported whether to export to outside load described output select circuit for controlling.
Further, described single chip machine controlling circuit also comprises single chip control unit and connected switch drive unit;
The line voltage of described single chip control unit to the described uninterrupted power supply of input gathers, and produce described changeover control signal according to the effective value of the line voltage gathering gained, and the described civil power operating voltage that described output select circuit exports is gathered, line voltage system needed for the civil power operating voltage of collection gained and user is compared, and produces described selection control signal according to comparative result;
The changeover control signal that described single chip control unit produces by described switch drive unit and selection control signal are amplified, and the changeover control signal after amplifying is exported to described civil power voltage stabilizing change-over circuit and the selection control signal after amplifying is exported to described output select circuit.
Further, described civil power voltage stabilizing change-over circuit comprises the first switch element, second switch unit, the 3rd switch element, the 4th switch element and autotransformer, wherein, described first switch element to described 4th switch element is all connected with described switch drive unit;
Described first switch element is used for controlling line voltage according to described changeover control signal and inputs described civil power voltage stabilizing change-over circuit;
OV tap and the 10V tap of described second switch unit and described autotransformer are connected, OV tap and the 20V tap of described 3rd switch element and described autotransformer are connected, and the coil that described second switch unit and described 3rd switch element are respectively used to control according to changeover control signal corresponding autotransformer carries out voltage stabilizing process to the line voltage that described first switch element exports;
Described 4th switch element is connected with tap corresponding with two line voltage systems in described autotransformer, the coil that described 4th switch element is used for controlling according to changeover control signal corresponding autotransformer is changed the line voltage that described 3rd switch element exports, and obtains the civil power operating voltage corresponding respectively with two line voltage systems.
Further, described output select circuit comprises the 5th switch element, wherein, described 5th switch element is connected with described switch drive unit, and described 5th switch element is used for selecting to export the civil power operating voltage corresponding with the line voltage system needed for user according to described selection control signal.
Further, described first switch element to described 5th switch element is relay, electronic type transfer switch or mechanical type change over switch.
Further, described two line voltage systems comprise 120V line voltage system and 220V line voltage system.
The off-grid type uninterrupted power supply that the embodiment of the present invention provides, by arranging single chip machine controlling circuit in off-grid type uninterrupted power supply, civil power voltage stabilizing change-over circuit and output select circuit, and in the process of uninterrupted power supply work, the single chip machine controlling circuit be arranged in uninterrupted power supply can control automatically to civil power voltage stabilizing change-over circuit and output select circuit, the line voltage inputted is made automatically to change through civil power voltage stabilizing change-over circuit and obtain the civil power operating voltage corresponding respectively with two line voltage systems, and output select circuit can export corresponding civil power operating voltage by the line voltage Systematic selection needed for user, such uninterrupted power supply can realize the function of twin voltage input dual output, thus make it have the compatible and stronger versatility of global civil power, and be conducive to promoting the use of, in addition, because above-mentioned uninterrupted power supply can be changed in the course of the work automatically, therefore, can also avoid by the phenomenon burning out uninterrupted power supply manually changed caused by civil power input.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of off-grid type uninterrupted power supply that the embodiment of the present invention provides;
Fig. 2 is the local circuit schematic diagram of a kind of off-grid type uninterrupted power supply that the embodiment of the present invention provides.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not entire infrastructure.
The embodiment of the present invention provides a kind of off-grid type uninterrupted power supply.Fig. 1 is the structural representation of a kind of off-grid type uninterrupted power supply that the embodiment of the present invention provides.As shown in Figure 1, described off-grid type uninterrupted power supply comprises: single chip machine controlling circuit 210, civil power voltage stabilizing change-over circuit 220 and output select circuit 230, described single chip machine controlling circuit 210 comprises switch instruction electronic circuit 211, wherein, described switch instruction electronic circuit 211 is for being input to described single chip machine controlling circuit 210 to its operation by the line voltage system needed for user according to user, the line voltage of described single chip machine controlling circuit 210 to the described uninterrupted power supply of input gathers, and send changeover control signal according to the effective value of the line voltage gathering gained to described civil power voltage stabilizing change-over circuit, described civil power voltage stabilizing change-over circuit carries out voltage stabilizing and conversion successively according to the line voltage of the described changeover control signal received to the described uninterrupted power supply of input, the civil power operating voltage corresponding respectively with two line voltage systems is obtained after conversion, one in wherein said two the line voltage systems line voltage system needed for user, described output select circuit 230 is selected to export described civil power and is stablized that change-over circuit produces and corresponding with default line voltage system civil power operating voltage, described single chip machine controlling circuit 210 gathers the described civil power operating voltage that described output select circuit 230 exports, line voltage system needed for the civil power operating voltage of collection gained and user is compared, and export selection control signal according to comparative result to described output select circuit 230, described output select circuit 230 is selected to export the civil power operating voltage corresponding with the line voltage system needed for user according to described selection control signal.
Particularly, above-mentioned line voltage can be provided by mains system 200.In embodiments of the present invention, described two line voltage systems comprise 120V line voltage system and 220V line voltage system.Wherein, the line voltage scope 80V ~ 150V of described 120V line voltage system, the line voltage scope of described 220V line voltage system is 180V ~ 260V.
It should be noted that, for the uninterrupted power supply used first, described default line voltage system is the 120V line voltage system of factory default; For the uninterrupted power supply reused, described default line voltage system is the required line voltage system that last user is arranged.
Line voltage due to input can belong to any one in two line voltage systems, and therefore off-grid type uninterrupted power supply of the present invention belongs to the uninterrupted power supply of twin voltage input.The line voltage of input obtains the civil power operating voltage corresponding respectively with two line voltage systems after the conversion of civil power voltage stabilizing change-over circuit 220, and can line voltage system needed for user, selected to export corresponding civil power operating voltage by output select circuit 230, therefore, uninterrupted power supply of the present invention can realize dual output.And in the process of uninterrupted power supply work, the single chip machine controlling circuit 210 be arranged in uninterrupted power supply can control automatically to civil power voltage stabilizing change-over circuit 220 and output select circuit 230, to realize automatically changing the line voltage of input and civil power operating voltage corresponding to the line voltage system needed for user of exporting.Based on foregoing description, off-grid type uninterrupted power supply provided by the invention not only can be avoided manually changing and burn out uninterrupted power supply phenomenon caused by civil power input, and can also realize global civil power compatible, versatility is comparatively strong, and is conducive to promoting the use of.
The line voltage effective value of above-mentioned single chip machine controlling circuit 210 gained can obtain by the following method: single chip machine controlling circuit 210 carries out multiple repairing weld to the line voltage being input to uninterrupted power supply, each sampling obtains the mean value of line voltage, then passes through formula
calculate line voltage effective value.In above-mentioned formula, V
rMSfor line voltage effective value, V
nfor gathering the line voltage mean value of gained at every turn, N is the number of times gathered line voltage.
After described single chip machine controlling circuit 210 calculates the line voltage effective value of input, according to civil power standard criterion, 80V ~ 150V line voltage scope is 120V line voltage system and 180V ~ 260V line voltage scope is 220V line voltage system, the line voltage that single chip machine controlling circuit 210 automatic discrimination goes out to input belongs to 120V line voltage system and still belongs to 220V line voltage system, single chip machine controlling circuit 210 is according to obtained line voltage effective value T.G Grammar control signal simultaneously, and is sent to described civil power voltage stabilizing change-over circuit 220.
After described civil power voltage stabilizing change-over circuit 220 receives changeover control signal, first voltage stabilizing operation is carried out to the line voltage of input uninterrupted power supply.This is because the line voltage excursion of input uninterrupted power supply is larger, and the loaded work piece that is connected with uninterrupted power supply can be made unstable, therefore, after voltage stabilizing process by civil power voltage stabilizing change-over circuit 220, can make the excursion of line voltage in ± 10%, thus load stabilization requirements of one's work can be met.Line voltage after voltage stabilizing is automatically changed again, can generate the corresponding operating voltage corresponding to two line voltage systems after conversion.
In embodiments of the present invention, described switch instruction electronic circuit 211 can comprise start and button detecting unit, 5V reference voltage generation unit and Auto Power On unit, wherein, 5V reference voltage generation unit for generation of 5V reference voltage using the reference voltage compared as described single chip machine controlling circuit.
In embodiments of the present invention, as shown in Figure 1, described uninterrupted power supply also comprises: charging circuit 240, battery component 250 and inverter circuit 260; Described charging circuit 240 utilizes the line voltage of the described uninterrupted power supply of input to charge to described battery component 250, described battery component 250 is connected with described inverter circuit 260, and the direct voltage that described battery component 250 exports is transformed into alternating voltage and exports to described output select circuit 230 by described inverter circuit 260.
It should be noted that, above-mentioned charging circuit 240, battery component 250 and inverter circuit 260 can adopt charging circuit, battery component and inverter circuit in any uninterrupted power supply of the prior art to realize.
Further, described single chip machine controlling circuit 210 respectively to the charging voltage of described charging circuit 240 with sample to the cell voltage of described battery component 250, and controls the size of the charging voltage of described charging circuit 240 and the unlatching of described battery component 250 or closedown according to the size of described cell voltage.Such as, when cell voltage is less, single chip machine controlling circuit 210 is by the sampling to the charging voltage of charging circuit 240 and the cell voltage to battery component 250, send charging control signal respectively to charging circuit 240 and send discharge control signal to battery component 250, be in higher value to make the charging voltage of charging circuit 240 and make battery component 250 be in closed condition; Otherwise, when cell voltage is larger, single chip machine controlling circuit 210 is by the sampling to the charging voltage of charging circuit 240 and the cell voltage to battery component 250, send charging control signal respectively to charging circuit 240 and send discharge control signal to battery component 250, be in smaller value to make the charging voltage of charging circuit 240 and make battery component 250 be in opening.In addition, whether single chip machine controlling circuit 210 also can carry out inversion process, with the electric discharge preventing battery component 250 excessive to the direct voltage that battery component 250 exports according to the size control inverter circuit 260 of collected cell voltage.
Further, described single chip machine controlling circuit 210 is sampled to the alternating voltage that described inverter circuit 260 exports, and controls the alternating voltage of described inverter circuit 260 output according to the effective value of the alternating voltage of sampling gained.Particularly, single chip machine controlling circuit 210 is according to the effective value of the alternating voltage of gained of sampling to inverter circuit 260, inverter control signal is sent to inverter circuit 260, producing alternating voltage (the different PWM ripples that this alternating voltage can be produced by inverter circuit 260 are formed) for controlling inverter circuit 260, producing stable alternating voltage to control inverter circuit 260.
In embodiments of the present invention, the alternating voltage of described inverter circuit 260 output and the civil power operating voltage of described civil power voltage stabilizing change-over circuit 220 output synchronously can export to described output select circuit 230.
In embodiments of the present invention, as shown in Figure 1, described uninterrupted power supply also comprises: exchange output unit 270, wherein, described interchange output unit 270 is connected with described output select circuit 230 and described single chip machine controlling circuit 210 respectively, is selected by described output select circuit 230 alternating voltage exported whether to export to outside load for controlling.
Particularly, single chip machine controlling circuit 210 can be sampled to the output voltage of described interchange output unit 270, and judge that whether the output voltage of the interchange output unit 270 of sampling gained is normal, if single chip machine controlling circuit 210 judges that the output voltage of the interchange output unit 270 of sampling gained is as abnormal, then single chip machine controlling circuit 210 sends output control signal and opens interchange output unit 270, now, open circuit is formed, to play the effect of protection to the load of outside between output select circuit 230 and the load of outside; Otherwise single chip machine controlling circuit 210 sends output control signal and closes interchange output unit 270, now forms path between output select circuit 230 and the load of outside.
As a specific embodiment of the present invention, as shown in Figure 2, described single chip machine controlling circuit also comprises single chip control unit 212 and connected switch drive unit 213; The line voltage of described single chip control unit 212 to the described uninterrupted power supply of input gathers, and produce described changeover control signal according to the effective value of the line voltage gathering gained, and the described civil power operating voltage that described output select circuit 230 exports is gathered, line voltage system needed for the civil power operating voltage of collection gained and user is compared, and produces described selection control signal according to comparative result; The changeover control signal that described single chip control unit 212 produces by described switch drive unit 213 and selection control signal are amplified, and the changeover control signal after amplifying is exported to described civil power voltage stabilizing change-over circuit 220 and the selection control signal after amplifying is exported to described output select circuit 230.In fig. 2, L/IN represents the live wire input of civil power, and N/IN represents the zero line input of civil power, and L/O represents the fire wire output end of civil power, and N/O represents the zero line output of civil power.
It should be noted that, above-mentioned changeover control signal and selection control signal can be the control signal of switching value; Above-mentioned single chip control unit 212 can adopt single-chip microcomputer of the prior art to realize; Above-mentioned switch drive unit 213 can adopt and realize changeover control signal and the device selecting control signal can play amplification and humidification.
In fig. 2, further, described civil power voltage stabilizing change-over circuit comprises the first switch element 221, second switch unit 222, the 3rd switch element 223, the 4th switch element 224 and autotransformer 225, wherein, described first switch element 221 is all connected with described switch drive unit 213 to described 4th switch element 224; Described first switch element 221 inputs described civil power voltage stabilizing change-over circuit for controlling line voltage according to described changeover control signal; OV tap and the 10V tap of described second switch unit 222 and described autotransformer are connected, OV tap and the 20V tap of described 3rd switch element 223 and described autotransformer 225 are connected, and the coil that described second switch unit 222 and described 3rd switch element 223 are respectively used to control according to changeover control signal corresponding autotransformer 225 carries out voltage stabilizing process to the line voltage that described first switch element 221 exports; Described 4th switch element 224 is connected with tap corresponding with two line voltage systems (being 120V line voltage system and 220V line voltage system in fig. 2) in described autotransformer 225, described 4th switch element 224 is changed the line voltage that described 3rd switch element 223 exports for the coil controlling corresponding autotransformer 225 according to changeover control signal, and obtains the civil power operating voltage corresponding respectively with two line voltage systems.In fig. 2, VCC represents power supply, for providing operating voltage for each switch element.
It should be noted that, if the line voltage of input uninterrupted power supply belongs to 120V line voltage system, line voltage then after second switch unit 222 and the 3rd switch element 223 voltage stabilizing enters from the tap that the 120V line voltage system of autotransformer 225 is corresponding through the 4th switch element 224, export from the zero line output N/O of civil power again, obtain the civil power operating voltage corresponding with 120V line voltage system, simultaneously, the coil at the tap place that autotransformer 225 pairs of 220V line voltage systems are corresponding charges, and produce the civil power operating voltage corresponding with 220V line voltage system, if the line voltage of input uninterrupted power supply belongs to 220V line voltage system, line voltage then after second switch unit 222 and the 3rd switch element 223 voltage stabilizing enters from the tap that the 220V line voltage system of autotransformer 225 is corresponding through the 4th switch element 224, export from the zero line output N/O of civil power again, obtain the civil power operating voltage corresponding with 220V line voltage system, simultaneously, the coil at the tap place that autotransformer 225 pairs of 120V line voltage systems are corresponding charges, and produce the civil power operating voltage corresponding with 120V line voltage system.It can thus be appreciated that the 4th switch element 224 can be changed the line voltage that the 3rd switch element 223 exports by the coil of autotransformer 225, and obtain the civil power operating voltage corresponding respectively with two line voltage systems.
In fig. 2, further, described output select circuit comprises the 5th switch element 231, wherein, described 5th switch element 231 is connected with described switch drive unit 213, for selecting to export the civil power operating voltage corresponding with the line voltage system needed for user according to described selection control signal.
Particularly, for the uninterrupted power supply used first, the 5th switch element 231 exports civil power operating voltage corresponding to 120V line voltage system, can play the effect of protection like this to the load of the outside be connected with uninterrupted power supply.For the uninterrupted power supply reused, the civil power operating voltage that the line voltage system that when the 5th switch element 231 exports last use, user is arranged is corresponding.When uninterrupted power supply works, user can indicate electronic circuit 211 to arrange required line voltage system by switch, such as 120V line voltage system or 220V line voltage system, and required line voltage system is input to single chip control unit 212, single chip control unit 212 is sampled to the civil power operating voltage that the 5th switch element 231 exports, and the line voltage system needed for the civil power operating voltage of sampling gained and user is compared, if the civil power operating voltage of gained belongs to the line voltage system needed for user, then the 5th switch element 231 continues to export corresponding civil power operating voltage, if the civil power operating voltage of gained does not belong to the line voltage system needed for user, then single chip control unit 212 sends to the 5th switch element 231 and selects control signal, 5th switch element 231 is selected to export the civil power operating voltage corresponding with the line voltage system needed for user according to received selection control signal.
In fig. 2, exchange output unit and comprise the 6th switch element 271, wherein, described 6th switch element 271 is connected with described switch drive unit 213, and the control signal of the switching value sent by single chip control unit 212 controls the on off state of the 6th switch element 271, and then control the output of uninterrupted power supply.
Particularly, single chip control unit 212 can be sampled to the output voltage of the 6th switch element 271, and judge that whether the output voltage of the 6th switch element 271 of sampling gained is normal, if single chip control unit 212 judges that the output voltage of the 6th switch element 271 of sampling gained is as abnormal, then single chip control unit 212 sends output control signal and opens the 6th switch element 272, now, open circuit is formed, to play the effect of protection to the load of outside between output select circuit 230 and the load of outside; Otherwise single chip control unit 212 sends output control signal and closes the 6th switch element 272, now forms path between output select circuit 230 and the load of outside.
In fig. 2, the first switch element 221 is relay to the 4th switch element 224, the 5th switch element 231 and the 6th switch element 271, and represents with RY21 ~ RY26 respectively.This is only the present invention about arranging the first switch element to one of the 6th switch element concrete example, in other concrete example, first switch element also can be electronic type transfer switch or mechanical type change over switch to the 6th switch element, as long as can make to comprise the civil power voltage stabilizing change-over circuit of respective switch unit, output select circuit and exchange output unit and realize respective function, in this no limit.
Next, the operation principle of the off-grid type uninterrupted power supply shown in Fig. 2 is described further.
As shown in Figure 2, when uninterrupted power supply is started working, single chip control unit 212 starts to sample to all signals, comprise the line voltage of input, the output voltage of output select circuit and the output voltage etc. exchanging output unit, by opening relay R Y21, the live wire of civil power enters uninterrupted power supply.When the line voltage inputted belongs to 120V line voltage system and line voltage system needed for user is 220V line voltage system, the line voltage collection of single chip control unit 212 to input is gone forward side by side row relax, and the operating state of relay R Y21 ~ RY25, following several situation may be comprised:
If line voltage effective value is less than 110V and is greater than 90V, then relay R Y22 is open-minded, the live wire of civil power enters the 10V tap of autotransformer 225, from its 0V tap out, relay R Y23 does not work, relay R Y24 is open-minded, the live wire of civil power enters the 120V tap of autotransformer 225, the zero line of civil power is back to from its N tap, relay R Y25 opens and selects 220V tap to carry out output voltage, and the voltage namely exported from relay R Y25 is civil power operating voltage corresponding to 220V line voltage system.
If the line voltage effective value of input is greater than 80V and is less than 90V, then closed relay RY22, the live wire of civil power enters the 0V tap of autotransformer 225, and from its 20V tap out, relay R Y23 works, relay R Y24 is open-minded, the live wire of civil power enters the 120V tap of autotransformer 225, the zero line of civil power is back to from its N tap, relay R Y25 opens and selects 220V tap to carry out output voltage, and the voltage namely exported from relay R Y25 is civil power operating voltage corresponding to 220V line voltage system.
If line voltage effective value is 110V, then relay R Y22 and relay R Y23 closes, relay R Y24 is open-minded, the live wire of civil power enters the 120V tap of autotransformer 225, and the zero line of civil power is back to from its N tap, realize straight-through lower conversion, relay R Y25 opens and selects 220V tap to carry out output voltage, namely from the voltage of relay R Y25 output be civil power operating voltage corresponding to 220V line voltage system.
If line voltage effective value is greater than 130V and is less than 150V, then relay R Y22 is open-minded, the live wire of civil power enters the 10V tap of autotransformer 225, from its 0V tap out, relay R Y23 works, then the live wire of civil power from the 20V tap of autotransformer 225 out, relay R Y24 is open-minded, the live wire of civil power enters the 120V tap of autotransformer 225, and the zero line of civil power is back to from its N tap, relay R Y25 opens and selects 220V tap to carry out output voltage, namely the voltage exported from relay R Y25 is civil power operating voltage corresponding to 220V line voltage system.
It should be noted that, when the line voltage inputted belongs to 120V line voltage system and line voltage system needed for user is 120V line voltage system, and when the line voltage inputted belong to 220V line voltage system and line voltage system needed for user be 120V line voltage system or 220V line voltage system time, the line voltage collection of single chip control unit 212 to input is gone forward side by side row relax, and the operating state of relay R Y21 ~ RY25, belong to 120V line voltage system to when the line voltage inputted and line voltage system needed for user is 220V line voltage system time situation similar, specifically can with reference to the above-mentioned description about the correlation circumstance when the line voltage inputted belongs to 120V line voltage system and line voltage system needed for user is 220V line voltage system, do not repeat them here.
The off-grid type uninterrupted power supply that the embodiment of the present invention provides, by arranging single chip machine controlling circuit in off-grid type uninterrupted power supply, civil power voltage stabilizing change-over circuit and output select circuit, and in the process of uninterrupted power supply work, the single chip machine controlling circuit be arranged in uninterrupted power supply can control automatically to civil power voltage stabilizing change-over circuit and output select circuit, the line voltage inputted is made automatically to change through civil power voltage stabilizing change-over circuit and obtain the civil power operating voltage corresponding respectively with two line voltage systems, and output select circuit can export corresponding civil power operating voltage by the line voltage Systematic selection needed for user, such uninterrupted power supply can realize the function of twin voltage input dual output, thus make it have the compatible and stronger versatility of global civil power, and be conducive to promoting the use of, in addition, because above-mentioned uninterrupted power supply can be changed in the course of the work automatically, therefore, can also avoid by the phenomenon burning out uninterrupted power supply manually changed caused by civil power input.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (10)
1. an off-grid type uninterrupted power supply, is characterized in that, comprising: single chip machine controlling circuit, civil power voltage stabilizing change-over circuit and output select circuit;
Described single chip machine controlling circuit comprises switch instruction electronic circuit, wherein, described switch instruction electronic circuit is used for its operation, the line voltage system needed for user being input to described single chip machine controlling circuit according to user, the line voltage of described single chip machine controlling circuit to the described uninterrupted power supply of input gathers, and send changeover control signal according to the effective value of the line voltage gathering gained to described civil power voltage stabilizing change-over circuit, described civil power voltage stabilizing change-over circuit carries out voltage stabilizing and conversion successively according to the line voltage of the described changeover control signal received to the described uninterrupted power supply of input, the civil power operating voltage corresponding respectively with two line voltage systems is obtained after conversion, one in wherein said two the line voltage systems line voltage system needed for user,
Described output select circuit is selected to export described civil power and is stablized that change-over circuit produces and corresponding with default line voltage system civil power operating voltage, described single chip machine controlling circuit gathers the described civil power operating voltage that described output select circuit exports, line voltage system needed for the civil power operating voltage of collection gained and user is compared, and export selection control signal according to comparative result to described output select circuit, described output select circuit is selected to export the civil power operating voltage corresponding with the line voltage system needed for user according to described selection control signal.
2. off-grid type uninterrupted power supply according to claim 1, is characterized in that, described uninterrupted power supply also comprises: charging circuit, battery component and inverter circuit; Described charging circuit utilizes the line voltage of the described uninterrupted power supply of input to charge to described battery component, described battery component is connected with described inverter circuit, and the direct voltage that described battery component exports is transformed into alternating voltage and exports to described output select circuit by described inverter circuit.
3. off-grid type uninterrupted power supply according to claim 2, it is characterized in that, described single chip machine controlling circuit respectively to the charging voltage of described charging circuit with sample to the cell voltage of described battery component, and controls the size of the charging voltage of described charging circuit and the unlatching of described battery component or closedown according to the size of described cell voltage;
Described single chip machine controlling circuit is sampled to the alternating voltage that described inverter circuit exports, and controls the alternating voltage of described inverter circuit output according to the effective value of the alternating voltage of sampling gained.
4. the off-grid type uninterrupted power supply according to Claims 2 or 3, is characterized in that, the alternating voltage that described inverter circuit exports and the civil power operating voltage that described civil power voltage stabilizing change-over circuit exports synchronously export to described output select circuit.
5. the off-grid type uninterrupted power supply according to any one of claim 1-3, it is characterized in that, described uninterrupted power supply also comprises: exchange output unit, wherein, described interchange output unit is connected with described output select circuit and described single chip machine controlling circuit respectively, selects the alternating voltage exported whether to export to outside load described output select circuit for controlling.
6. off-grid type uninterrupted power supply according to claim 1, is characterized in that, described single chip machine controlling circuit also comprises single chip control unit and connected switch drive unit;
The line voltage of described single chip control unit to the described uninterrupted power supply of input gathers, and produce described changeover control signal according to the effective value of the line voltage gathering gained, and the described civil power operating voltage that described output select circuit exports is gathered, line voltage system needed for the civil power operating voltage of collection gained and user is compared, and produces described selection control signal according to comparative result;
The changeover control signal that described single chip control unit produces by described switch drive unit and selection control signal are amplified, and the changeover control signal after amplifying is exported to described civil power voltage stabilizing change-over circuit and the selection control signal after amplifying is exported to described output select circuit.
7. off-grid type uninterrupted power supply according to claim 6, it is characterized in that, described civil power voltage stabilizing change-over circuit comprises the first switch element, second switch unit, the 3rd switch element, the 4th switch element and autotransformer, wherein, described first switch element to described 4th switch element is all connected with described switch drive unit;
Described first switch element is used for controlling line voltage according to described changeover control signal and inputs described civil power voltage stabilizing change-over circuit;
OV tap and the 10V tap of described second switch unit and described autotransformer are connected, OV tap and the 20V tap of described 3rd switch element and described autotransformer are connected, and the coil that described second switch unit and described 3rd switch element are respectively used to control according to changeover control signal corresponding autotransformer carries out voltage stabilizing process to the line voltage that described first switch element exports;
Described 4th switch element is connected with tap corresponding with two line voltage systems in described autotransformer, the coil that described 4th switch element is used for controlling according to changeover control signal corresponding autotransformer is changed the line voltage that described 3rd switch element exports, and obtains the civil power operating voltage corresponding respectively with two line voltage systems.
8. off-grid type uninterrupted power supply according to claim 7, it is characterized in that, described output select circuit comprises the 5th switch element, wherein, described 5th switch element is connected with described switch drive unit, and described 5th switch element is used for selecting to export the civil power operating voltage corresponding with the line voltage system needed for user according to described selection control signal.
9. off-grid type uninterrupted power supply according to claim 8, is characterized in that, described first switch element to described 5th switch element is relay, electronic type transfer switch or mechanical type change over switch.
10. the off-grid type uninterrupted power supply according to claim 1 or 7, is characterized in that, described two line voltage systems comprise 120V line voltage system and 220V line voltage system.
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| CN107579590A (en) * | 2016-07-05 | 2018-01-12 | 伊顿飞瑞慕品股份有限公司 | Off-grid type uninterrupted power source |
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| CN104578392B (en) | 2017-01-11 |
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Application publication date: 20150429 Assignee: Guangdong Yaoda Financial Leasing Co.,Ltd. Assignor: FOSHAN UNIPOWER ELECTRONIC Co.,Ltd. Contract record no.: X2022980008110 Denomination of invention: An off grid uninterruptible power supply Granted publication date: 20170111 License type: Exclusive License Record date: 20220621 |
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Denomination of invention: An off grid uninterruptible power supply Effective date of registration: 20220622 Granted publication date: 20170111 Pledgee: Guangdong Yaoda Financial Leasing Co.,Ltd. Pledgor: FOSHAN UNIPOWER ELECTRONIC Co.,Ltd. Registration number: Y2022980008524 |