CN2511033Y - Computer-comtrolled on-line UPS - Google Patents
Computer-comtrolled on-line UPS Download PDFInfo
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- CN2511033Y CN2511033Y CN 01232884 CN01232884U CN2511033Y CN 2511033 Y CN2511033 Y CN 2511033Y CN 01232884 CN01232884 CN 01232884 CN 01232884 U CN01232884 U CN 01232884U CN 2511033 Y CN2511033 Y CN 2511033Y
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Abstract
The utility model provides an online ups device which comprises an ac input part, a power output part, a battery unit charging part, a reverse circuit part, an auxiliary power part and a computer controller. The battery unit charging part comprises an integrated double circuit for automatically supplying the power for the reverse circuit part based on the power supplying state of the outer wire and the battery unit. The circuit uses a switching relay of a normal ups to make that a seamless switching of the type of the power output is realized. The ac input part comprises a zero-crossing and power off detecting circuit which gets rid of the conventional circuit composition model of the use of multiple calculation amplifiers. And a synchronization and lock phase circuit is canceled. The reverse circuit part comprises two power frequency switches which are alternatively communicated according to two ac voltage waveforms and thus the ac voltage is produced. The design which differs from the conventional reversing principle simplifies the circuit and improves the reversing efficiency.
Description
Technical field:
The utility model relates to a kind of online uninterrupted power supply.
Background technology:
Because uninterrupted power supply can continue to provide power supply to power consumption equipment when outside line is not powered, thereby obtain to use widely.The common more complicated of the circuit structure of traditional uninterrupted power supply, thus poor reliability caused, be easy to produce fault and higher cost.For example, 1. the voltage detecting circuit of crossing the zero-sum outage detection to AC power generally comprises a plurality of operational amplifiers, and the circuit complexity has increased the fault chance; 2. on the mode of power output, adopt transfer relay to carry out the switching of outside line power supply and inversion power supply, because switching to compare with electronics, the mechanical change action of relay easily breaks down, have higher cost, therefore increased trouble and the purchase cost used; 3. owing to there is the control circuit that more assurance power supply can reliably working in the inside of power supply, and these control circuits are normally separate, this has not only increased the complexity of circuit, also is unfavorable for the centralized management of whole power supply control, therefore is difficult to guarantee whole control precision.
Summary of the invention:
The purpose of this utility model is, provides a kind of control precision height, simple, the lower-cost computer of circuit to control online uninterrupted power supply(ups).
For achieving the above object, the computer that the utility model provides is controlled online uninterrupted power supply(ups), comprise the ac input division branch, power output part, the storage battery live part, the inverter circuit part, accessory power supply part and computer controller, this computer controller and above-mentioned ac input division branch, power output part, the storage battery live part, the inverter circuit part, the accessory power supply part interconnects respectively, described ac input division branch is exchanged input control, described power output part is carried out power output control, to described storage battery live part storage battery charging Detection ﹠ Controling, described inverter circuit is partly carried out inversion control, described accessory power supply is partly controlled;
Under the control of computer controller, the ac input division branch is converted to high direct voltage with 220 volts of interchanges of external AC power and exports to power output part, pulsation low pressure and dc low-voltage that power output part divides the high direct voltage that produces to be converted to big electric current described ac input division are for the storage battery live part provides charge power supply and partly provides the output of low-pressure high-power direct current for inverter circuit; The storage battery live part is delivered to computer controller with the storage battery electric weight of measuring, and to the storage battery charging and the control of charging, simultaneously, the low-pressure high-power direct current output that the storage battery live part provides storage battery output and power output part is mixed into a road direction inverter circuit and partly powers, and provides the inversion AC power by the inverter circuit part to load; The accessory power supply part provides the tributary low-tension supply of isolating with the AC power grid side for the predrive circuit of described power output part.
Described ac input division branch comprises zero passage and power failure detection circuit, low-pass filter circuit, electronic insurance circuit, first current rectifying and wave filtering circuit; The output of crossing the zero-sum power failure detection circuit is connected with the input of low-pass filter circuit, the output of low-pass filter circuit is connected with the input of electronic insurance circuit, the output of electronic insurance circuit is connected with the input of first current rectifying and wave filtering circuit, and first current rectifying and wave filtering circuit is output as the output that ac input division divides;
Cross the zero-sum Alternating Current Power Supply state of crossing that the zero-sum power failure detection circuit detects AC power, its output is fed to low-pass filter circuit, low-pass filter circuit carries out low-pass filtering and suppresses the High-frequency Interference clutter AC power, and the result exported to electronic insurance circuit, system is carried out soft start or at system's emerged in operation anything unexpected and the positive closing system, first current rectifying and wave filtering circuit of exporting to of electronic insurance circuit carries out rectifying and wave-filtering simultaneously by electronic insurance circuit in good time.
Described power output part comprises predrive circuit, high frequency power switching circuit, switch transformer, rectification circuit, filter circuit, voltage fluctuation testing circuit; The output of predrive circuit is connected with the input of high frequency power switching circuit, the input of switch transformer is connected with the output of high frequency power switching circuit, the input of rectification circuit respectively with output, and the input of filter circuit is connected with the output of rectification circuit and the input of voltage fluctuation testing circuit respectively with output;
Predrive circuit produce for high-frequency signal is sent to the high frequency power switching circuit, the power electric current that flows to switch transformer is connected and is closed in control; Switch transformer is under the control of described high frequency power switching circuit, by continuous switch change, be implemented in the piezoelectricity conversion output that motivates low-voltage, high-current on secondary, this output is sent to rectification circuit and filter circuit and carries out voltage sampling through the voltage fluctuation testing circuit;
Described storage battery live part comprises charging control circuit, charging testing circuit, forward choked flow circuit, dual-electric-in-one circuit and storage battery; The input and output side of storage battery is connected with the output of charging control circuit, the input of charging testing circuit, the input of forward choked flow circuit respectively, storage battery is in the charging control of accepting charging control circuit, provide detection signal to the charging testing circuit, whether reach predetermined power shortage value to detect battery voltage, and provide battery power to forward choked flow circuit; The input of dual-electric-in-one circuit is connected with the output of forward choked flow circuit, chooses the described inverter circuit of a road direction automatically and partly change power supply among the power supply of the filter circuit output of out-put supply that forward choked flow circuit provides and power output part.
Described inverter circuit partly comprises: inverter power switch, inversion high frequency switch transformer, second current rectifying and wave filtering circuit, the first power frequency switch, the second power frequency switch; The input of inversion high frequency switch transformer is connected with the output of inverter power switch and the input of second current rectifying and wave filtering circuit respectively with output, and the different output of second current rectifying and wave filtering circuit is connected with the input of the first power frequency switch, the second power frequency switch respectively;
The power electric current that flows to the inversion high frequency switch transformer is connected and is closed in the control of inverter power switch, realize the conversion of low-voltage direct inversion for exchanging, the output of this conversion is sent to the inversion high frequency switch transformer, by continuous switch change, on secondary, motivate high frequency, high-pressure pulsating voltage, this voltage is delivered to the first power frequency switch and the second power frequency switch behind the second current rectifying and wave filtering circuit rectifying and wave-filtering, carry out conducting to electric according to the voltage waveform of alternating current in different phase places by the first power frequency switch and the second power frequency switch.
The described zero-sum power failure detection circuit of crossing comprises: rectifier BD2, diode D1, resistance R 1 to R6, capacitor C 33, triode T1, infraluminescence are to managing L1 to L2 and photoelectronic coupler U1;
Grid alternating current is connected with the input of rectifier BD2, the cathode output end of rectifier BD2 is connected with the anode of diode D1 and an end of resistance R 1, the negative electrode of diode D1 is connected with the positive pole of capacitor C 33 and an end of resistance R 3, and the other end of resistance R 1 is connected with an end of resistance R 2 and the base stage of triode T1; The other end of resistance R 3 is connected with an end of resistance R 6 and the end of the photoelectronic coupler U1 that is connected triode T1 collector circuit; The other end of resistance R 2 is connected with the anode of infraluminescence to pipe L1 with the emitter of triode T1; The cathode output end of rectifier BD2 is connected with the negative electrode of infraluminescence to pipe L1 with the negative pole of capacitor C 33, the other end of resistance R 6.
Described dual-electric-in-one circuit comprises: choked flow diode D1 and storage battery S; The anode of described diode D1 is connected with the positive pole of storage battery S.
Because the utility model adopts computer controller that ac input division branch, power output part, storage battery live part, inverter circuit part, accessory power supply are partly controlled, and promptly helps the centralized management of whole supply unit, can improve control precision again.The zero-sum power failure detection circuit of crossing that the utility model adopts has been broken away from traditional pattern that a plurality of operational amplifiers are formed this circuit of passing through, synchronous and phase lock circuitry have been cancelled, only just finished outage detection and over-current detection and finished the overvoltage detection simultaneously with a pair of luminous and photodiode and triode, photoelectronic coupler and several high-power resistances, several rectifier diodes, simplify circuit, reduced cost; The dual-electric-in-one circuit that adopts only comprises a fly-wheel diode, has promptly realized seamless switching on the mode of power output, owing to cancelled the transfer relay and the accessory circuit thereof of conventional uninterrupted power supply, more can realize the purpose of this utility model; The inverter circuit that adopts produces the positive and negative two-way high pressure that the mid point ground wire is arranged with direct voltage low pressure by high frequency conversion and rectification, this two-way voltage is respectively by a power frequency switch, above-mentioned power frequency switch is according to the voltage waveform of alternating current, promptly one just, a negative alternate conduction, and be connected to ground wire by load, thereby produced alternating voltage, this working method that is different from traditional inversion principle has been simplified circuit design, has been improved inversion efficiency.
Description of drawings:
Fig. 1 is the utility model embodiment block diagram;
Fig. 2 is the dual-electric-in-one circuit figure of employing embodiment illustrated in fig. 1;
Fig. 3 is the figure of zero-sum power failure detection circuit excessively of employing embodiment illustrated in fig. 1;
Fig. 4 is the storage battery live part circuit diagram of employing embodiment illustrated in fig. 1;
Fig. 5 is the accessory power supply partial circuit figure of employing embodiment illustrated in fig. 1;
Fig. 6 is the ac input division parallel circuit figure of employing embodiment illustrated in fig. 1;
Fig. 7 is the power output part circuit diagram of employing embodiment illustrated in fig. 1;
Fig. 8 is the inverter circuit partial circuit figure of employing embodiment illustrated in fig. 1;
Fig. 9 is the computer control part circuit diagram of employing embodiment illustrated in fig. 1.
Embodiment:
For further understanding the utility model, the utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model embodiment block diagram.Computer shown in Figure 1 is controlled online uninterrupted power supply(ups), comprise that ac input division divides 1, power output part 2, storage battery live part 3, inverter circuit part 4, accessory power supply part 5 and computer controller 6, this computer controller 6 divides 1 with above-mentioned ac input division, power output part 2, storage battery live part 3, inverter circuit part 4, the accessory power supply part interconnects respectively, divide 1 to exchange input control to described ac input division, described power output part 2 is carried out power output control, storage battery charging Detection ﹠ Controling to described storage battery live part 3, described inverter circuit part 4 is carried out inversion control, described accessory power supply part 5 is controlled;
Ac input division divides 1: be used for external AC power under the control of computer controller, 220 volts exchanged be converted to high direct voltage output.Described ac input division branch comprises:
Described ac input division branch comprises zero passage and power failure detection circuit 11, low-pass filter circuit 12, electronic insurance circuit 13, first current rectifying and wave filtering circuit 14; The output of crossing zero-sum power failure detection circuit 11 is connected with the input of low-pass filter circuit 12, the output of low-pass filter circuit 12 is connected with the input of electronic insurance circuit 13, the output of electronic insurance circuit 13 is connected with the input of first current rectifying and wave filtering circuit 14, and first current rectifying and wave filtering circuit 14 is output as ac input division and divides 1 output.
Cross zero-sum power failure detection circuit 11: the zero-sum Alternating Current Power Supply state of crossing that is used to detect AC power;
Low-pass filter circuit 12: be used for AC power is carried out low-pass filtering;
Electronic insurance circuit 13: be used for the soft start of system and system and be in operation and anything unexpected occur and the positive closing system, so that the circuit of protection system does not suffer bigger damage;
First current rectifying and wave filtering circuit 14: be used for AC power is carried out rectifying and wave-filtering.
After uninterrupted power supply was connected AC power, because the effect of electronic insurance circuit 13, whole uninterrupted power supply circuit was not connected.But the zero-sum power failure detection circuit 11 of crossing in the circuit has been started working.Uninterrupted power supply work if desired, soft switch that can start-up system, i.e. the enabling signal switch of computer controller, computer controller is started working, and its detects zero passage of the AC power in several cycles earlier, makes the work of computer controller synchronous with it then.The one-period one-period ground conducting amount that strengthens electronic insurance circuit 13 gradually realizes that the soft of uninterrupted power supply open then.In the reality, described electronic insurance circuit 13 can be made of bidirectional triode thyristor and related device, plays the effect of soft start when uninterrupted power supply starts; If it is unexpected that the work back occurs, as short circuit, then under the control of computer controller, close the exterior line power supply of uninterrupted power supply and force whole uninterrupted power supply is closed, prevent from the circuit of system is caused bigger infringement.After the soft switch opens, alternating current becomes direct voltage, electric current through rectifying and wave-filtering, to about high voltage direct current of 310 volts of power switch output.
Power output part 2: be used for the pulsation low pressure and the dc low-voltage that divide the high direct voltage that produces to be converted to big electric current described ac input division, for the storage battery live part provides charge power supply and partly provides the output of low-pressure high-power direct current for inverter circuit; Described power output part 2 comprises predrive circuit 21, high frequency power switching circuit 22, switch transformer 23, rectification circuit 24, filter circuit 25, voltage fluctuation testing circuit 26; The output of predrive circuit 21 is connected with the input of high frequency power switching circuit 22, the input of switch transformer 23 is connected with the output of high frequency power switching circuit 22, the input of rectification circuit 24 respectively with output, and the input of filter circuit 25 is connected with the output of rectification circuit 24 and the input of voltage fluctuation testing circuit 26 respectively with output;
Predrive circuit 21: be used for pre-driver as the high frequency power switch;
High frequency power switching circuit 22: be used to control and connect and close the power electric current that flows to switch transformer;
Switch transformer 23: be used under the control of described high frequency power switching circuit,, be implemented in the piezoelectricity conversion that motivates low-voltage, high-current on secondary by continuous switch change;
Rectification circuit 24: be used for the pulse low-voltage of described switch transformer output is carried out rectification;
Filter circuit 25: be used for filtering is carried out in the output of rectification circuit;
Voltage fluctuation testing circuit 26: be used for voltage sampling is carried out in the output of described filter circuit.
The effect of described power output part 2 has two: the one, and be treated to storage battery by high frequency voltage descending and carry a stable pulse charging current; The 2nd, for inverter circuit partly provides an online supply power voltage and stable current source.
When the outside line AC power is connected, after computer control part 6 was passed through the zero-sum relevant parameter excessively of zero-sum power failure detection circuit 11 acquisition AC power, control the circuit working of this part immediately, like this on switch transformer 23 secondary, produce the pulse low-voltage of the high electric current of two-way, one tunnel process rectifying and wave-filtering, voltage stabilizing provide stable electric current for computer controller with relevant testing circuit; Other one the tunnel has two purposes: the one, behind over commutation, do not carry out filtering directly to charging current of storage battery output, this charging current is controlled, variable current source, the variation of its magnitude of current is consistent with the charge characteristic of storage battery, therefore can provide good condition for the energy storage usefulness of giving full play to storage battery, the while also provides maximum performance to guarantee the continual characteristic of uninterrupted power supply; The 2nd, by the stable direct current of filter circuit 25 output, think that inverter circuit partly powers.Output connection voltage fluctuation testing circuit 26 at filter circuit 25 carries out voltage sampling, and sampled signal is admitted to computer control part 6, thinks that the closed-loop control of whole uninterrupted power supply provides condition.
Storage battery live part 3: be used to measure the storage battery electric weight, storage battery is charged and the control of charging; The low-pressure high-power direct current output that is used for that also storage battery output and power output part are provided is mixed into a road direction inverter circuit and partly powers; Described storage battery live part 3 comprises charging control circuit 31, charging testing circuit 32, forward choked flow circuit 33, dual-electric-in-one circuit 34 and storage battery 35; The input and output side of storage battery 35 is connected with the output of charging control circuit 31, the input of charging testing circuit 32, the input of forward choked flow circuit 33 respectively, storage battery is in the charging control of accepting charging control circuit, provide detection signal to the charging testing circuit, whether reach predetermined power shortage value to detect battery voltage, and provide battery power to forward choked flow circuit; The input of dual-electric-in-one circuit 34 is connected with the output of forward choked flow circuit 33, chooses the described inverter circuit part 4 conversion power supplies of a road direction automatically among the power supply of filter circuit 25 outputs of out-put supply that forward choked flow circuit 33 provides and power output part 2.
Charging control circuit 31: be used under the control of described computer controller, opening or closing charging path to storage battery;
Charging testing circuit 32: be used to detect battery voltage and whether reach predetermined power shortage value;
Forward choked flow circuit 33: be used for storage battery is exported
Dual-electric-in-one circuit 34: be used for partly changing power supply from the described inverter circuit of trend according to the power supply state of described forward choked flow circuit and the output of described filter circuit.
A road of the power output of described power output part 2 is exported a controlled variable charging current to storage battery 35 behind over commutation, when computer controller 6 detects storage battery when charging voltage reaches rated value by charging testing circuit 32, under the control of computer controller 6, charging control circuit stops to charge to storage battery; When computer controller 6 detected the storage battery power shortage by charging testing circuit 32, computer controller 6 control charging control circuits 31 charged to storage battery.By charging testing circuit 32, computer controller 6 is by the detection to battery voltage, and decision is to fill by force or trickle charge to the charged state of storage battery.The output of described filter circuit 25 and described storage battery 35 provide inverter by dual-electric-in-one circuit 34 to inverter circuit part 4 through the output of forward choked flow circuit 33.The maximum characteristics of this circuit are: cancelled the switching relay of mains-supplied and inversion power supply, by dual-electric-in-one circuit 34, can change power supply automatically according to power supply state, realized the bumpless transfer of no switching time.
Inverter circuit part 4: be used for providing the inversion AC power to load; Described inverter circuit part 4 comprises inverter power switch 41, inversion high frequency switch transformer 42, second current rectifying and wave filtering circuit 43, the first power frequency switch 44, the second power frequency switch 45; The input of inversion high frequency switch transformer 42 is connected with the output of inverter power switch 41 and the input of second current rectifying and wave filtering circuit 43 respectively with output, and the different output of second current rectifying and wave filtering circuit 43 is connected with the input of the first power frequency switch 44, the second power frequency switch 45 respectively
Inverter power switch 41: be used to control the opening and closing of inversion high frequency switch transformer;
Inversion high frequency switch transformer 42: be used for converting Dc low voltage power supply to high-frequency and high-voltage power supply;
Second current rectifying and wave filtering circuit 43: be used for described high-frequency and high-voltage power supply is carried out rectifying and wave-filtering;
The first power frequency switch 44: be used for carrying out conducting according to the voltage waveform of alternating current and with the second power frequency switch opposite phases;
The second power frequency switch 45: be used for carrying out conducting according to the voltage waveform of alternating current and with the first power frequency switch opposite phases.
Inverter circuit part 4 under the control of inverter power switch 41, by the high frequency conversion of inversion high frequency switch transformer 42 and the rectifying and wave-filtering of current rectifying and wave filtering circuit 43, produces a positive and negative two-way high pressure that the mid point ground wire is arranged with direct voltage low pressure.This two-way voltage respectively has a power frequency switch, these two power frequency switches are according to the voltage waveform of alternating current, i.e. one just (10 milliseconds), the mode alternate conduction of negative (10 milliseconds), described conducting all is connected to ground wire by load, has therefore produced the alternating voltage to load.The mode that above-mentioned inverting is different from existing inverter circuit fully is innovation of the present utility model.
Accessory power supply part 5: for described power output part provides and the isolation tributary low-tension supply of AC power grid side and detection, the maintenance that is used for entire equipment, for computer controller provides computer condition detection signal and the clock synchronous with AC power.
The utility model is different from traditional circuit in specific implementation process part describes below.
Fig. 2 is the dual-electric-in-one circuit figure of employing embodiment illustrated in fig. 1.Circuit shown in Figure 2 adopts sustained diode 1 to continue.This circuit comprises choked flow diode D1 and storage battery S; The anode of described diode D1 is connected with the positive pole of storage battery S.When mains supply just often, the 220V grid alternating current is transformed to low-voltage DC (this example for 27V) through power output part and partly provides the energy to inverter circuit because the voltage of reserve battery is 24V usually, this moment, D1 did not work.Have only when mains supply voltage to descend or have a power failure the voltage that causes power output when being lower than 24V, standby 24V battery just continues through D1 the energy is provided, and realizes contactless continuing.
Fig. 3 is the figure of zero-sum power failure detection circuit excessively of employing embodiment illustrated in fig. 1.Circuit shown in Figure 3 designs for realizing line voltage monitoring and UPS soft start.This circuit comprises: rectifier BD2, diode D1, resistance R 1 to R6, capacitor C 33, triode T1, infraluminescence are to managing L1 to L2 and photoelectronic coupler U1.
Grid alternating current is connected with the input of rectifier BD2, the cathode output end of rectifier BD2 is connected with the anode of diode D1 and an end of resistance R 1, the negative electrode of diode D1 is connected with the positive pole of capacitor C 33 and an end of resistance R 3, and the other end of resistance R 1 is connected with an end of resistance R 2 and the base stage of triode T1; The other end of resistance R 3 is connected with an end of resistance R 6 and the end of the photoelectronic coupler U1 that is connected triode T1 collector circuit; The other end of resistance R 2 is connected with the anode of infraluminescence to pipe L1 with the emitter of triode T1; The cathode output end of rectifier BD2 is connected with the negative electrode of infraluminescence to pipe L1 with the negative pole of capacitor C 33, the other end of resistance R 6.
Adopt above-mentioned connection, grid alternating current inputs to rectifier BD2 after by filtering and does rectification, thereby obtains the sine pulse direct current of 100Hz.This pulse direct current is divided into two-way, leads up to diode D1 after capacitor C 33 filtering, carries out dividing potential drop by resistance R 3, R6, and U1 provides driving voltage for photoelectronic coupler; Another road keeps its pulse characteristic, by resistance R 1, R2 dividing potential drop, for triode T1, L1 provide drive signal.Because the forward voltage drop of L1 is very little, so L1 is except that ending near the zero point of input pulse, all the other states are conducting, L1, L2 are that infraluminescence is to pipe, its effect is the Signal Spacing input, the conducting of L2 and by synchronous with L1, thus can obtain at the anode tap of L2 and the corresponding burst pulse zero passage detection of pulse direct current electrical zero signal.Simultaneously, when the pressure drop of pulse direct current on R2 reaches certain amplitude, will make the T1 conducting, and then make U1 output electronegative potential, otherwise the output high potential, its pulse duration of outage detection pulse signal that is obtained is corresponding with the effective value of line voltage.Its frequency is 100Hz.Owing to adopt 5V to drive,, be beneficial to single-chip microcomputer and handle so the outage detection signal is consistent with the TTL storage battery with the zero passage detection signal.R4, R5 are load resistance among the figure.
Fig. 4 is the storage battery live part circuit diagram of employing embodiment illustrated in fig. 1.Circuit shown in the figure adopts pulse charging, and triode T2, T3 constitute Darlington formula constant-current circuit, can adjust the maximum of charging current by the ratio that changes resistance R 3, R4.The work of whole charging circuit is as follows: the C-E that the filter circuit that the voltage of storage battery constitutes by inductance L 1, electrochemical capacitor E1, E2 and capacitor C 1 is added in output, resistance R 2 and the triode T1 of resistance R 1 and photoelectronic coupler U1 ties, and resistance R 2 is the output protection resistance of triode T1.When the charge switch control signal was " height ", U1 exported electronegative potential, and T1 ends, and T2, T3 also end, and do not carry out pulse current charge to battery.When the charge switch control signal was " low ", U1 exported high potential, and T1 obtains forward bias and conducting, T2, T3 also therefore and conducting, pulse charging current charges to storage battery by T2, T3.In the reality, by regularity to the charging control circuit input control signal, use discrete pulse current to battery charge thereby reach, obtain desirable charging effect.Resistance R 5, R6, R7 and variable resistor P1, voltage-stabiliser tube W1 (model TL431) constitute the battery undervoltage detection circuit among the figure, can adjust the parameter of the under-voltage standard of storage battery by the position of adjusting the P1 convertible tip.When battery voltage is not lower than under-voltage standard (as 22V), battery under-voltage signal is about the electronegative potential about 1V, when storage battery makes voltage drop to under-voltage standard because of discharge, battery under-voltage signal is upgraded to high potential rapidly, thereby make single-chip microcomputer obtain battery under-voltage signal, close the output of uninterrupted power supply, prevent that storage battery from damaging because of over-discharge can.
Fig. 5 is the accessory power supply partial circuit figure of employing embodiment illustrated in fig. 1.Circuit shown in the figure is the auto-excitation type anti exciting converter of core with 555 integrated circuit U1.Can adjust the operating frequency and the pulsewidth of converter by changing resistance R 1, R2 and capacitor C 1.When no enabling signal, triode T1 ends, and 4 pin of U1 are electronegative potential, and converter is not worked.After enabling signal occurring, the T1 conducting, 4 pin of U1 are high potential, converter starts.The protective circuit that the output of U1 is formed by capacitor C 3, resistance R 3 provides base drive signal to triode T2, makes T2 be operated on off state.T2 work makes the pulse of the about 17V of transformer L10 secondary output, and capacitor C 4, resistance R 7 are formed the spike circuit that disappears.After the secondary output of L10 is carried out rectification, filtering by diode D1, electrochemical capacitor E1, capacitor C 5, inductance L 1; carry out voltage stabilizing by three terminal regulator (model is 7815); provide the accessory power supply of 15V to circuit, the diode D2 among the figure is the protection diode of three terminal regulator.
Fig. 6 is the ac input division parallel circuit figure of employing embodiment illustrated in fig. 1.Circuit shown in the figure passes through capacitor C 1, C14, C16, C15, C17, C19, C18, resistance R 1, R38, and the two-stage passive filtering that inductance L 1, L2, L4, L5 form carries out filtering and suppresses electric network pollution grid alternating current.Form the startup surge that soft starting circuit suppresses circuit by resistance R 39, R43, R53, U7 (MOC3063), VS1.When soft start is controlled to be " height ", U7 will control VS1 and open, and make grid alternating current enter rectifier BD1 by VS1 and do rectification, and the high voltage direct current of about 310V is provided to circuit; When soft start is controlled to be " low ", U7 will control VS1 and close, and grid alternating current and circuit are disconnected.
Fig. 7 is the power output part circuit diagram of employing embodiment illustrated in fig. 1.Circuit shown in the figure has adopted the semibridge system switch converters.L7 is that main transformer changes switch transformer, and L3 is the isolation drive transformer.T3, T4 are the power drive pipe, and D3, D4 are respectively the protection diode of T4, T3.T1, T2 are power switch pipe, and D5, D6 are respectively the protection diodes of T2, T1.Capacitor C 1 is half-bridge output balancing capacitance.The base drive signal of T3, T4 is the anti-phase pumping signal that has the dead band.When the base drive signal of T3, T4 was electronegative potential, T3, T4 all ended, at this moment the half-bridge converter no-output.When the base drive signal of T3 is high, the base drive signal of T4 when low, the T3 conducting, T4 ends, the electric current of end 6 appears being flowed to by end 7 in the former limit of L3, secondary induces by end 4 to end 5, end 1 is to the electric current of end 2, end 3.The T1 drive circuit of being made up of D1, R5, R1, R6, E1 makes that T1 is full rapidly to close conducting, and the T2 drive circuit of being made up of D2, R3, R2, R4, E2 ends T2 rapidly.Electric current is from 220V rectification+flow to the mid point of equalizing capacitance E3, E4 and protective resistance R7, R8 through the C-E of T1 knot, 1,3 ends of L3, the former limit of C1, L7.Otherwise, when the base drive signal of T4 is high, the base drive signal of T3 when low, the T4 conducting, T3 ends, T2 is full rapidly to close conducting, T1 ends rapidly.Electric current from the mid point of E3, E4 and R7, R8 through the former limit of L7, the C-E knot of 3,1 end of C1, L3, T2, flow to the 220V rectification-.In this half-bridge circuit, E1, E2 can shorten ON time and the deadline of T1, T2, improve the switching characteristic of T1, T2.C1 is the half-bridge balancing capacitance.
Along with T1, T2 alternate conduction with end, rightabout electric current alternately appears in the former limit of L7, the induced current of its secondary gained is after T11 does full-wave rectification, and one the tunnel exports as pulse charging current, and another road provides dc supply to inverter circuit after L1, R6, L2, E5, filtering.
Fig. 8 is the inverter circuit partial circuit figure of employing embodiment illustrated in fig. 1.Inverter circuit is the inversion of 50Hz quasi sine.The push-pull type power switch circuit is adopted on the former limit of contravariant transformer T1, and Q9, Q10 are power switch pipes, and Q8, Q7, R12, R10 form the promotion circuit of Q9, and Q6, Q5, R9, R11 form the promotion circuit of Q10.After the 24V reserve battery carries out LC filtering by E5, L1, E4, be that 7812 voltage stabilizing circuit carries out voltage stabilizing by model again, the 12V direct current of its output promotes circuit accessory power supply is provided for two groups after E5 filtering.Two groups of pumping signals that promote circuit of Q7, Q8 and Q5, Q6 are the anti-phase pumping signals that have the dead band, and when pumping signal is when low, Q6, Q8 end, Q7, Q5 satisfy and close conducting, it is low that thereby the grid potential that makes Q9, Q10 is, and Q9, Q10 end, the output of inversion inactivity.If the pumping signal of Q7, Q8 is high, when the pumping signal of Q5, Q6 is low, Q8, Q5 conducting, Q6, Q7 end, and the grid potential of Q9 is the height conducting, and the grid potential of Q10 is ended for low, and source current flows to 7 ends by 8 ends of T1; When the pumping signal of Q7, Q8 is low, when the pumping signal of Q5, Q6 is high, Q9 is ended, the Q10 conducting, source current flows to 6 ends by 8 ends of T1.Along with the alternate conduction of Q9, Q10, induce 30KHz among secondary winding A, the B of T1 respectively, common port 2 and 5 amplitudes are about the square wave of 300V, the common port of two windings links to each other through the end of R14 as inversion output.1,3 ends of winding A form the E utmost point that the high pressure of common port+300V is added on Q4 after the forward full-wave rectification, R18, C5 form its high pressure dummy load; 4,6 ends of winding B form the E utmost point that the high pressure of common port-300V is added on Q3 after the negative sense full-wave rectification, R17, C4 are its dummy loads.The induction output of auxiliary tap 7 ends of winding A provides work accessory power supply to T2 through the D8 rectification after E2, the C6 filtering, and R16, R12 be the protective resistance of accessory power supply for this reason, and D2 is its clamp diode, makes its operating voltage be no more than 15V, and C2 is its filter capacitor.The effect of auxiliary tap 8 ends of winding B is identical with the effect of auxiliary tap 7 ends of winding A, provides the work accessory power supply to T1, and R15, R11 be the protective resistance of accessory power supply for this reason, and D1 is its clamp diode, and C1 is its filter capacitor.
In inverter circuit, the ac-excited signal of two-way 50Hz is fixing reverse energization signal, when making U1, pumping signal opens, and when U2 closes, the Q1 conducting, Q2 ends; Thereby make the Q3 conducting, Q4 ends.Inverter current is returned 4,6 ends of T1 through C-E knot, D5 and the D4 of R14, inversion load, R13, Q3 by the common port of T1; When making U2, pumping signal opens, when U1 closes, and the Q2 conducting, Q1 ends; Thereby make the Q4 conducting, Q3 ends.Inverter current by 4,6 ends of T1 through C-E knot, L2, R13, inversion load, the R14 of D6 and D7, Q4, return the common port of T1.Along with the alternate of the ac-excited signal of two-way 50Hz, will form alternating voltage at inversion load two ends.In inverter circuit, R13, R14 are temperature coefficient of resistance, and circuit is carried out temperature-compensating, and L2, C will eliminate the spike interference of inversion output and the effect of smothing filtering.
Fig. 9 is the computer control part circuit diagram of employing embodiment illustrated in fig. 1.Circuit shown in the figure is made of jointly PIC1657 and two single-chip microcomputers of PIC1673, in order to control the operation of whole uninterrupted power supply(ups).
Claims (7)
1, a kind of computer is controlled online uninterrupted power supply(ups), comprise the ac input division branch, power output part, the storage battery live part, the inverter circuit part, the accessory power supply part, it is characterized in that: also comprise computer controller, this computer controller and above-mentioned ac input division branch, power output part, the storage battery live part, the inverter circuit part, the accessory power supply part interconnects respectively, described ac input division branch is exchanged input control, described power output part is carried out power output control, to described storage battery live part storage battery charging Detection ﹠ Controling, described inverter circuit is partly carried out inversion control, described accessory power supply is partly controlled;
Under the control of computer controller, the ac input division branch is converted to high direct voltage with 220 volts of interchanges of external AC power and exports to power output part, pulsation low pressure and dc low-voltage that power output part divides the high direct voltage that produces to be converted to big electric current described ac input division are for the storage battery live part provides charge power supply and partly provides the output of low-pressure high-power direct current for inverter circuit; The storage battery live part is delivered to computer controller with the storage battery electric weight of measuring, and to the storage battery charging and the control of charging, simultaneously, the low-pressure high-power direct current output that the storage battery live part provides storage battery output and power output part is mixed into a road direction inverter circuit and partly powers, and provides the inversion AC power by the inverter circuit part to load; The accessory power supply part provides the tributary low-tension supply of isolating with the AC power grid side for the predrive circuit of described power output part.
2, uninterrupted power supply(ups) according to claim 1 is characterized in that: described ac input division branch comprises zero passage and power failure detection circuit, low-pass filter circuit, electronic insurance circuit, first current rectifying and wave filtering circuit; The output of crossing the zero-sum power failure detection circuit is connected with the input of low-pass filter circuit, the output of low-pass filter circuit is connected with the input of electronic insurance circuit, the output of electronic insurance circuit is connected with the input of first current rectifying and wave filtering circuit, and first current rectifying and wave filtering circuit is output as the output that ac input division divides;
Cross the zero-sum Alternating Current Power Supply state of crossing that the zero-sum power failure detection circuit detects AC power, its output is fed to low-pass filter circuit, low-pass filter circuit carries out low-pass filtering and suppresses the High-frequency Interference clutter AC power, and the result exported to electronic insurance circuit, system is carried out soft start or at system's emerged in operation anything unexpected and the positive closing system, first current rectifying and wave filtering circuit of exporting to of electronic insurance circuit carries out rectifying and wave-filtering simultaneously by electronic insurance circuit in good time.
3, uninterrupted power supply(ups) according to claim 1 is characterized in that: described power output part comprises predrive circuit, high frequency power switching circuit, switch transformer, rectification circuit, filter circuit, voltage fluctuation testing circuit; The output of predrive circuit is connected with the input of high frequency power switching circuit, the input of switch transformer is connected with the output of high frequency power switching circuit, the input of rectification circuit respectively with output, and the input of filter circuit is connected with the output of rectification circuit and the input of voltage fluctuation testing circuit respectively with output;
Predrive circuit produce for high-frequency signal is sent to the high frequency power switching circuit, the power electric current that flows to switch transformer is connected and is closed in control; Switch transformer is under the control of described high frequency power switching circuit, by continuous switch change, be implemented in the piezoelectricity conversion output that motivates low-voltage, high-current on secondary, this output is sent to rectification circuit and filter circuit and carries out voltage sampling through the voltage fluctuation testing circuit;
4, uninterrupted power supply(ups) according to claim 1 is characterized in that: described storage battery live part comprises charging control circuit, charging testing circuit, forward choked flow circuit, dual-electric-in-one circuit and storage battery; The input and output side of storage battery is connected with the output of charging control circuit, the input of charging testing circuit, the input of forward choked flow circuit respectively, storage battery is in the charging control of accepting charging control circuit, provide detection signal to the charging testing circuit, whether reach predetermined power shortage value to detect battery voltage, and provide battery power to forward choked flow circuit; The input of dual-electric-in-one circuit is connected with the output of forward choked flow circuit, chooses the described inverter circuit of a road direction automatically and partly change power supply among the power supply of the filter circuit output of out-put supply that forward choked flow circuit provides and power output part.
5, uninterrupted power supply(ups) according to claim 1 is characterized in that: described inverter circuit partly comprises: inverter power switch, inversion high frequency switch transformer, second current rectifying and wave filtering circuit, the first power frequency switch, the second power frequency switch; The input of inversion high frequency switch transformer is connected with the output of inverter power switch and the input of second current rectifying and wave filtering circuit respectively with output, and the different output of second current rectifying and wave filtering circuit is connected with the input of the first power frequency switch, the second power frequency switch respectively;
The power electric current that flows to the inversion high frequency switch transformer is connected and is closed in the control of inverter power switch, realize the conversion of low-voltage direct inversion for exchanging, the output of this conversion is sent to the inversion high frequency switch transformer, by continuous switch change, on secondary, motivate high frequency, high-pressure pulsating voltage, this voltage is delivered to the first power frequency switch and the second power frequency switch behind the second current rectifying and wave filtering circuit rectifying and wave-filtering, carry out conducting to electric according to the voltage waveform of alternating current in different phase places by the first power frequency switch and the second power frequency switch.
6, uninterrupted power supply(ups) according to claim 2, it is characterized in that the described zero-sum power failure detection circuit of crossing comprises: rectifier BD2, diode D1, resistance R 1 to R6, capacitor C 33, triode T1, infraluminescence are to managing L1 to L2 and photoelectronic coupler U1;
Grid alternating current is connected with the input of rectifier BD2, the cathode output end of rectifier BD2 is connected with the anode of diode D1 and an end of resistance R 1, the negative electrode of diode D1 is connected with the positive pole of capacitor C 33 and an end of resistance R 3, and the other end of resistance R 1 is connected with an end of resistance R 2 and the base stage of triode T1; The other end of resistance R 3 is connected with an end of resistance R 6 and the end of the photoelectronic coupler U1 that is connected triode T1 collector circuit; The other end of resistance R 2 is connected with the anode of infraluminescence to pipe L1 with the emitter of triode T1; The cathode output end of rectifier BD2 is connected with the negative electrode of infraluminescence to pipe L1 with the negative pole of capacitor C 33, the other end of resistance R 6.
7, uninterrupted power supply(ups) according to claim 4 is characterized in that described dual-electric-in-one circuit comprises: choked flow diode D1 and storage battery S; The anode of described diode D1 is connected with the positive pole of storage battery S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01232884 CN2511033Y (en) | 2001-08-08 | 2001-08-08 | Computer-comtrolled on-line UPS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01232884 CN2511033Y (en) | 2001-08-08 | 2001-08-08 | Computer-comtrolled on-line UPS |
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| Publication Number | Publication Date |
|---|---|
| CN2511033Y true CN2511033Y (en) | 2002-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01232884 Expired - Fee Related CN2511033Y (en) | 2001-08-08 | 2001-08-08 | Computer-comtrolled on-line UPS |
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| CN (1) | CN2511033Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600834A (en) * | 2015-02-11 | 2015-05-06 | 深圳市金优科技有限公司 | Emergency power supply circuit and power supply circuit conversion method |
| TWI484710B (en) * | 2013-03-19 | 2015-05-11 | Delta Electronics Inc | Electronic fuse apparatus and method of operating the same |
| CN106787088A (en) * | 2017-01-18 | 2017-05-31 | 西北工业大学 | It is applied to the self powered supply management circuit of discontinuous piezoelectric energy acquisition system |
| CN107769314A (en) * | 2012-12-11 | 2018-03-06 | 斯马特浪潮科技公司 | Power management system for distributor |
| CN107846060A (en) * | 2017-11-22 | 2018-03-27 | 深圳市助尔达电子科技有限公司 | A kind of power charging circuit |
| CN108377098A (en) * | 2018-04-23 | 2018-08-07 | 顺德职业技术学院 | A kind of constant voltage outputting circuit of twin-stage input inverter |
| CN112271918A (en) * | 2020-09-16 | 2021-01-26 | 浙江吉利控股集团有限公司 | Soft start method and system for charging vehicle-mounted power supply |
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2001
- 2001-08-08 CN CN 01232884 patent/CN2511033Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769314A (en) * | 2012-12-11 | 2018-03-06 | 斯马特浪潮科技公司 | Power management system for distributor |
| CN107769314B (en) * | 2012-12-11 | 2020-12-01 | 斯马特浪潮科技股份有限公司 | Power management system for dispensers |
| TWI484710B (en) * | 2013-03-19 | 2015-05-11 | Delta Electronics Inc | Electronic fuse apparatus and method of operating the same |
| CN104600834A (en) * | 2015-02-11 | 2015-05-06 | 深圳市金优科技有限公司 | Emergency power supply circuit and power supply circuit conversion method |
| CN106787088A (en) * | 2017-01-18 | 2017-05-31 | 西北工业大学 | It is applied to the self powered supply management circuit of discontinuous piezoelectric energy acquisition system |
| CN107846060A (en) * | 2017-11-22 | 2018-03-27 | 深圳市助尔达电子科技有限公司 | A kind of power charging circuit |
| CN108377098A (en) * | 2018-04-23 | 2018-08-07 | 顺德职业技术学院 | A kind of constant voltage outputting circuit of twin-stage input inverter |
| CN108377098B (en) * | 2018-04-23 | 2023-10-03 | 顺德职业技术学院 | Constant voltage output circuit of two-stage input inverter power supply |
| CN112271918A (en) * | 2020-09-16 | 2021-01-26 | 浙江吉利控股集团有限公司 | Soft start method and system for charging vehicle-mounted power supply |
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