CN2515857Y

CN2515857Y - High voltage DC uniterruption power source

Info

Publication number: CN2515857Y
Application number: CN01251090U
Authority: CN
Inventors: 孙康; 孙宝库
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-20
Filing date: 2001-10-20
Publication date: 2002-10-09
Anticipated expiration: 2011-10-20

Abstract

The utility model discloses a high-voltage direct current uninterrupted power supply. The utility model uses the output of high-voltage direct current. The high level end of the output end is connecteThe utility model discloses a high-voltage DC uninterrupted power supply which is output in high-voltage DC. The high-level end of the output end of the power supply is connected with the high-level ed with the high level end of an energy-storage battery unit, and the low level end of the output end is connected with the low level end of the energy-storage battery unit. The utility model has simplnd of an energy storage battery and the low-level end of the output end is connected with the low-level end of the energy storage battery. The utility model has a simple circuit structure and the powee circuit structure, and has no need of secondary conversion of the power supply. Compared with the uninterrupted power supply outputted by the existing common high-voltage alternation current, the utr supply needs no secondary conversion. Compared with the general high-voltage AC output uninterrupted power supply, the utility model has the advantages of low production cost, low operation cost andility model has the advantages of low cost, low operation cost and high reliability, and is widely suitable for fields of various electronic devices of information and network industries with, etc. high reliability, widely applicable for various electronic apparatuses in information and network fields.

Description

The high voltage direct current uninterrupted power supply

The utility model relates to a kind of uninterruption power source, particularly a kind of uninterruption power source of high voltage direct current output.

Along with the fast development of information technology and network economy, show data safety problem day important.Therefore, the uninterrupted power supply as one of system patron has also obtained greatly developing and applying.At present, the fixed uninterrupted power supply that uses in worldwide is divided into two big classes: the first kind is the uninterruption power source that is exclusively used in the low-voltage direct current output of telecommunication system.In this class uninterrupted power supply, the energy-storage battery group adopts the battery pack series-fed (annotating: also can adopt 8 joint 6V or 24 to save the battery pack series-fed of 2V) of 4 joint 12V, and the nominal value of its output voltage is direct current 48V.Second class is the uninterruption power source that general high-voltage alternating is exported.What use in a large number in information and networking industry at present is exactly this class uninterrupted power supply, and its output voltage is single phase alternating current (A.C.) 220VAC or three-phase alternating current 380VAC in China.In this class high-voltage alternating uninterrupted power supply, energy-storage battery 1 joint 12V battery or a few joint 12V battery series-feds that adopt in the low power uninterrupted power supply more, the process power inverter is reverse into direct current energy after the AC energy, by step-up transformer output voltage is adjusted to 220VAC output again, and in the powerful uninterrupted power supply, energy-storage battery 16 joints that adopt to 32 joint 12V battery pack series-feds more, through power inverter direct current energy is reverse into AC energy and directly exports afterwards or export, produce the alternating voltage output of single-phase 220VAC or three-phase 380VAC by isolating transformer.

Because the various electronic equipments that use in information and networking industry have at present all adopted the Switching Power Supply power supply, with regard to its essence, these Switching Power Supplies do not need Alternating Current Power Supply, have direct current supply passable fully, only current current way is to obtain this direct current from alternating current after over commutation.Therefore, existing interchange output uninterrupted power supply is reverse into AC energy with the direct current energy in the battery, and it is also unreasonable to become the powering mode of direct current through over commutation again to load after.On the other hand, the direct voltage that is exclusively used in the DC uninterrupted power supply output of the 48V low-voltage of telecommunication system is too low again, can not guarantee the Switching Power Supply operate as normal on the various universal electronic devices.

The purpose of this utility model provides a kind of uninterruption power source that can effectively overcome the high voltage direct current output of above-mentioned two class uninterrupted power supply defectives.

The purpose of this utility model is achieved in that its employing high voltage direct current output, the high level end (V of output _O+) with the high level end (V of energy-storage battery group (B) _B+) join the low level end (V of output _O-) with the low level end (V of energy-storage battery group (B) _B-) join; In the system of single-phase 220VAC or three-phase 380VAC Alternating Current Power Supply, energy-storage battery group (B) can adopt 21 joints to 28 joint 12V battery pack series-feds, also can adopt 42 joints to 56 joint 6V battery pack or 126 to save to 168 joint 2V battery pack series-feds, the nominal value of its supply power voltage is direct current 252V to 336V; In the system of single-phase 110VAC or 115VAC Alternating Current Power Supply, energy-storage battery group (B) can adopt 11 joints to 14 joint 12V battery pack series-feds, also can adopt 22 joints to 28 joint 6V battery pack or 66 to save to 84 joint 2V battery pack series-feds, the nominal value of its supply power voltage is direct current 132V to 168V.

After adopting high voltage direct current uninterrupted power supply of the present utility model, compare the secondary conversion of having saved power supply with existing universal ac uninterrupted power supply and cancelled following circuit: high power DC is to inverter circuit that exchanges and supporting with it interlock circuit; The frequency of output voltage, the detection of phase place and control circuit; Be various supervisory circuits, phase lock circuitry and corresponding software and the algorithm of realizing that multi-machine parallel connection adopts; Output boostering transformer or isolating transformer.Because the cancellation of these circuit makes high voltage direct current uninterrupted power supply of the present utility model have more performance: low production cost, low operating cost, high reliability, high efficiency and high benefit.Thereby has a tangible technological progress.

Below in conjunction with accompanying drawing in detail the utility model is described in detail.

Fig. 1 is the utility model theory of constitution block diagram.

Fig. 2 makees the theory of constitution block diagram of current sample element for the utility model adopts resistance (RI).

Fig. 3 adopts the theory of constitution block diagram of filter reactor (L) for the utility model.

Fig. 4 has the theory of constitution block diagram that exchanges the bypass output channel for the utility model adopts.

Fig. 5 is the power circuit diagram of main channel of the utility model embodiment.

Fig. 6 is the circuit diagram of the utility model embodiment single-chip microcomputer and control, demonstration, warning circuit.

In Fig. 1, KI is for exchanging input switch, and KO is a high voltage direct current output switch; B is the energy-storage battery group of series connection, C is a filter capacitor, HI is a current transformer, in the system of single-phase 220VAC or three-phase 380VAC Alternating Current Power Supply, B can adopt 21 joints to 28 joint 12V battery pack series-feds, also can adopt 42 joints to 56 joint 6V battery pack or 126 to save to 168 joint 2V battery pack series-feds, the nominal value of its supply power voltage is direct current 252V to 336V; In the system of single-phase 110VAC or 115VAC Alternating Current Power Supply, B can adopt 11 joints to 14 joint 12V battery pack series-feds, also can adopt 22 joints to 28 joint 6V battery pack or 66 to save to 84 joint 2V battery pack series-feds, the nominal value of its supply power voltage is direct current 132V to 168V; V _B+Be the high level end of energy-storage battery group, the high level end (V of it and output dc voltage _O+) be connected; (V _B-) be the low level end of energy-storage battery group, the low level end (V of it and output dc voltage _O-) be connected.

In Fig. 2, adopted the current transformer (HI) in the sampling resistor (RI) and voltage amplifier circuit alternate figures 1 cheaply, be used to detect the charge and discharge electric current of battery pack (B), this sample mode is applicable in the not too big power supply of power output.

In Fig. 3, at the high level end (V of battery pack (B) _B+) and rectifier between inserted a filter reactor (L), can improve the ripple characteristics of output dc voltage preferably.

In Fig. 4, L is for exchanging live wire, and N is for exchanging zero line, and JD is the switch unit of a dpdt double-pole double-throw (DPDT).When power output hour, JD can adopt quick heavy-current relay; When power output was big, JD can adopt electronic switch, as high-power silicon controlled rectifier.Exchange bypass channel owing to all there is one in most of high-voltage alternating uninterrupted power supplys, be used for maintenance of equipment or use in emergency circumstances, so in the high voltage direct current uninterrupted power supply, also can keep one and exchange bypass channel, JD is used to the switching that realizes that these two kinds of different output states are exported in high voltage direct current output and high-voltage alternating bypass.

Fig. 5 and Fig. 6 are specific embodiments of the utility model, and wherein Fig. 5 is the circuit diagram of power supply main channel, and Fig. 6 is the circuit diagram of single-chip microcomputer and control, demonstration, warning circuit.

VIN is an ac input end among Fig. 5, and L is a live wire, and N is a zero line, and G is a ground wire, and KA is a mains switch, and FA1 is the input insurance; RV is a piezo-resistance, optional 390V or 430V in the 220V electric power system; CA1, CA2, CA3 are high-voltage capacitance, and they become alternating current filter with inductance TL0 mutual group, the input and output of blocking-up High-frequency Interference, and TL1 is from the corner transformer, is used for the adjustment of input voltage; JA1, JA2, JA3 are the single-pole double throw relay, and the upper right contact of each relay is a normally closed contact among the figure; DB1 is the high-voltage great-current rectifier bridge, and model is a KBPC series; KS is an one-way SCR, and model is a KP series; IC1 is a thyristor output type photoelectrical coupler, and model is MOC3021, and it and R1, R2 form the gate trigger circuit of KS, and R0 and C0 are used to prevent the KS false triggering; B is a battery pack, can adopt 24 joint 12V batteries to be composed in series in the present embodiment; L is a filter reactor; C1 and C2 are high-voltage filtering capacitor; FD1 is an export insurance; JD is the dpdt double-pole double-throw (DPDT) heavy-current relay, and the upper left contact of each cutter is a normally closed contact among the figure; V _OUTBe output, do not move when JD, when cutter is connected with normally closed contact, V _OUTWith exchange bypass channel and join, the output AC electricity, when the JD action, when cutter is connected with normal opened contact, output DC; HI1 and HI2 are pulse output type current transformer, wherein HI1 detects the charging and discharging currents of battery pack (B), HI2 detects the output current of power supply, also HI1 can be placed on the position of HI1 ', and at this moment the charging and discharging currents of battery pack (B) is the difference of HI1 ' and HI2; HV is a pulse output type voltage transformer, is used to detect the size of output dc voltage; IC2 and IC3 are photoelectrical coupler TLP521, are made up of R3, R4, DW and IC2 to exchange live wire (L) voltage detecting circuit; TL2 is a miniature transformer, FA2 is insurance, DB2 is little current commutates bridge, also can replace with 4 diode IN4001, T0 is triode 2SC9013, and DA1 is diode IN4001, forms the alternating voltage zero-crossing testing circuit by above-mentioned components and parts and R5, R6, R7, R36, C3, C4, when the input ac voltage zero passage, this circuit produces a negative pulse at the INT0 end; SD is a direct-current switch power supply, exports two groups of direct voltage V _CCAnd V ₁₂, V wherein _CCBe positive 5V, V ₁₂Be positive 12V, GND is the two public ground, and KD is a push-button switch, and JB is a heavy-current relay, is used to the self-insurance of powering, and FD2 is insurance; C5, C6 are V ₁₂Filtering, C7, C8 are V _CCFiltering.

Among Fig. 6, U0 is single-chip microcomputer 89C52, is the core component of this power supply control.8 controls that all are used for LED 1 to LED8 of this single-chip microcomputer P0 mouth, wherein, LED1 is used to show powered battery, and LED2 is used for showing the interchange bypass power supply, LED3 is used to show normal direct current supply, LED4 is used to show the output current overload, and LED5 to LED8 is used to show the size of battery reserve of electricity, represents battery reserve of electricity maximum when these four LED are bright, bright is few more, the battery reserve of electricity is more little, and four LED represent the battery discharge end of a period when not working, will shut down automatically; In the P1 mouth except that P10 is used for the input of pulse signal of voltage transformer HV, all the other 7 all are used for control output, wherein P11 is used to control the conducting of KS, and P12 to P16 is used to control the action of five relay J B, JA1, JA2, JA3 and JD, and P17 is used to control the warning of alarm SP; In the P2 mouth, the state of P20 input AC by-pass switch K1, P20 was low when K1 was closed, power supply changes the interchange bypass condition over to, the state of P21 input powered battery K switch 2, P21 was low when K2 was closed, and power supply changes the powered battery state over to, if K1 and K2 are closed, then the priority of K2 is higher than K1, by changing powered battery control over to, the signal of P22 input AC live wire (L) voltage detecting circuit is when live wire (L) voltage is higher than zero line (N) certain value, P22 is low, otherwise P22 is high, and five of all the other in the P2 mouth are not used, and uses during expanded function after reserving; In the P3 mouth, INT0 is used to receive the zero passage interrupt signal of alternating current, INT1 is used to receive the shutdown interrupt signal that is produced by button switch K 3, the pulse signal of T0 received current instrument transformer HI1, the pulse signal of T1 received current instrument transformer HI2, four of all the other of P3 mouth are not used, and use during expanded function after reserving.C9 and R21 form electrify restoration circuit; TX is a crystal, forms oscillating circuit jointly with capacitor C X1 and CX2; T1 to T7 is triode 2SC9012, and D0 to D4 is diode IN4001; JB, JA1, JA2, JA3, JD are the heavy-current relay of 12V power supply.

The course of work of present embodiment is as follows:

The closed KA of elder generation, alternating voltage process bypass channel and JD are from V _OUTKD is pressed in output again, and the voltage of battery pack (B) is direct-current switch power supply SD power supply, SD output+5V voltage V through KD _CCWith+12V voltage V ₁₂Single-chip microcomputer U0 holds output low level in the end back that powers on from P12, make the JB action, be embodied as the self-insurance of SD power supply by the JB-1 closure, the input signal of the HV of the closed connection of JB-2 simultaneously, initialization finishes the conducting of back U0 from P11 end control KS, and the size of the control KS angle of flow determines by two factors, and the firstth, output voltage V _O, the secondth, the charging current of battery pack (B) should satisfy the two requirement simultaneously.After C1 and C2 were full of electricity, during for low level, U0 was from P16 end output low level control JD action, output dc voltage, at this moment V at the P22 end _OUTEqual V _OWhen the angle of flow of KS big (or less), output voltage V _OStill lower (or higher), then V _OCan pass through P13, P14 or P15 control JA1, JA2 or JA3 action (or recovery), guarantee output voltage V _OComparatively stable, at this moment U0 holds output low level from P02, and LED3 is bright, indicates the operating state of normal direct current output.With TL2, DB2, T0 and IC3 is the circuit generation alternating current zero-crossing pulse INT0 of main components and parts, and this signal is one of sign of Alternating Current Power Supply existence, also is the benchmark of U0 control KS angle of flow size.When Alternating Current Power Supply is had no progeny V suddenly _ODischarge with capacitor C 1, C2 reduces to some extent, works as V _OWhen being reduced to the discharge voltage of battery pack (B), output voltage is kept by battery power discharge, and power supply is transformed into battery-powered state automatically.At this moment the electric current that flows through HI1 no longer is a charging current, but reverse discharging current, and equates that with the electric current of HI2 U0 holds output low level from P00, and from P02 end output high level, LED1 is bright, and LED3 does not work, pilot cell powered operation state.When the battery reserve of electricity was sufficient, U0 was from P04 to P07 output low level, make LED5 to LED8 totally four all bright, after the battery reserve of electricity reduced gradually along with discharge, LED5 to LED7 did not work thereupon yet.When the minimizing of battery reserve of electricity, when having only LED8 bright, U0 is from the low pulse of P17 mouth output gap, make alarm SP send the interruption chimes of doom, when the battery reserve of electricity closes on discharge at the end, LED8 does not work, and U0 is from P17 mouth output low level, SP sends continuous alarm sound, discharge at the end when the battery reserve of electricity arrives, U0 is from whole output ports output high level, all relay recovery normally offs, the holding function of JB-1 loses, and power supply quits work along with cutting off of power supply.

After the end that normally powers on, if K1 and K2 all do not have closure, then power supply is by normal direct current output state work, if the K1 closure, then change the interchange bypass condition when low at P22, if the K2 closure, then U0 no longer sends out trigger impulse from the P11 end, and KS is conducting no longer, power supply changes the powered battery state over to, when K1 and K2 were closed, the priority of K2 was higher than K1, by powered battery control output.After pressing shut down switch K3 during shutdown, when U0 elder generation is low at the P22 end, from P16 end output high level, make JD recover normally off, power supply changes the interchange bypass condition over to, then with all control delivery outlet output high level, the holding function of JB-1 loses, power supply quits work, and at this moment cuts off KA, output voltage V _OUTBe zero.HI2 is used to detect the size of output current, when overload appears in power supply, U0 is from P03 and P17 output low level, send sound and light alarm simultaneously with LED4 and SP, when overload is less, power supply can be kept direct current output services state, and when overload is big, U0 will control power supply and change interchange bypass operating state over to.

Claims

1, a kind of uninterruption power source is characterized in that: it adopts high voltage direct current output, the high level end (V of output _O+) with the high level end (V of energy-storage battery group (B) _B+) join the low level end (V of output _O-) with the low level end (V of energy-storage battery group (B) _B-) join; In the system of single-phase 220VAC or three-phase 380VAC Alternating Current Power Supply, energy-storage battery group (B) can adopt 21 joints to 28 joint 12V battery pack series-feds, also can adopt 42 joints to 56 joint 6V battery pack or 126 to save to 168 joint 2V battery pack series-feds, the nominal value of its supply power voltage is direct current 252V to 336V; In the system of single-phase 110VAC or 115VAC Alternating Current Power Supply, energy-storage battery group (B) can adopt 11 joints to 14 joint 12V battery pack series-feds, also can adopt 22 joints to 28 joint 6V battery pack or 66 to save to 84 joint 2V battery pack series-feds, the nominal value of its supply power voltage is direct current 132V to 168V.