CN203233232U - Power supply control circuit of backup power source - Google Patents
Power supply control circuit of backup power source Download PDFInfo
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- CN203233232U CN203233232U CN 201320295133 CN201320295133U CN203233232U CN 203233232 U CN203233232 U CN 203233232U CN 201320295133 CN201320295133 CN 201320295133 CN 201320295133 U CN201320295133 U CN 201320295133U CN 203233232 U CN203233232 U CN 203233232U
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Abstract
Provided by the utility model is a power supply control circuit of a backup power source. The power supply control circuit comprises a direct-current power supply module, an electrical storage device, a power supplying conversion module, and an electrical storage device charging control module. When the direct-current power supply module provides direct currents for user terminal equipment, the electrical storage device charging control module detects a voltage of the electrical storage device; if the voltage of the electrical storage device is greater than or equal to an upper threshold value of a preset voltage, the electrical storage device charging control module controls the electrical storage device to stop charging; and if the voltage of the electrical storage device is less than a lower threshold value of the preset voltage, the electrical storage device charging control module outputs a direct current of the electrical storage device. When the direct-current power supply module does not provide the direct current for other equipment, the power supplying conversion module controls the electrical storage device to power the user terminal equipment, so that normal working of the user terminal equipment is maintained and software and hardware of the equipment are protected from being damaged. The provided power supply control circuit with advantages of simple structure, low cost, and high stability and reliability is developed based on existing equipment of all users.
Description
Technical field
The utility model relates to a kind of reserve electric supply installation, specifically is a kind of back-up source power-supplying circuit, belongs to areas of information technology.
Background technology
Back-up source is the there won't be any problem power supply of a kind of automatic driving of a kind of drive circuit that effectively prevents subscriber terminal equipment when not having normal voltage, in order to the power supply that subscriber terminal equipment can operate as normal to be provided.
Back-up source can realize that to the power supply of all kinds of electric supply installations the zero-time switches, and the length of self power-on time is optional, and has the characteristics of voltage stabilizing, frequency stabilization, purification, is to ensure power supply stability and successional visual plant.Back-up source has solved problems such as the outage of existing electric power, under-voltage, overvoltage, makes the operation of power electronic equipment and computer system more safe and reliable.At present, the back-up source industries such as computer, traffic, bank, security, communication, medical treatment, Industry Control that have been widely used, and little by little entering family.
The operation principle of traditional back-up source is normally: when civil power, earlier civil power is become direct current by the AC/DC converter, this direct current is carried out power factor correction by the DC/DC converter, and then supply with subscriber terminal equipment after being reverse into alternating current by the DC/AC converter; When not having civil power, the direct current of storage battery boosts by the DC/DC conversion earlier, again by the DC/AC converter, supplies with subscriber terminal equipment after being reverse into alternating current.The voltage of civil power and storage battery all must be by secondary or cubic transformation, just can obtain the power supply that is complementary with subscriber terminal equipment, in this process electric energy loss big, thereby overall efficiency is low; Because the peripheral electron element is many, and the circuit complexity causes the mutual interference of interelement phase, failure rate height, stability and reliability are relatively low simultaneously.
In recent years, along with telecommunications, UNICOM and equipment such as mobile upgrading optical fiber and light cat need power supply, family has a power failure and just can't use the wireless fixed telephone phone to converse; Office space outage causes being unable to get through on the telephone, thereby notebook and computer do not have network signal can't normal office work; Wireless router, light cat, switch outage cause mobile phone, panel computer can not use WIFI.Along with people are more and more higher to the requirement of quality of life, many users also at home or back-up source is installed in some small-sized Administrative Areas, the communication network that occurs family when unusual or Administrative Area in order to civil power interrupts.
Modern back-up source is generally the back-up source of no-reverse change device, no power consumption, directly removes DC/DC converter, DC/AC inversion converter in the civil power communication channel; Remove DC/DC booster converter and DC/AC inversion converter in the storage battery direct current channel; After removing these four kinds of power inverters, whole back-up source is remaining static switch, storage battery and charge controller thereof only, when civil power just often, civil power is converted to direct current powers to subscriber terminal equipment, when mains failure, directly powered to subscriber terminal equipment by storage battery.
Existing patent documentation CN1750355A discloses a kind of green UPS, comprise storage battery, rectifier, sinusoidal cutting level, capability correction level, inverter stage and filtering stage, civil power not filtering by the rectifier paraphase, after obtaining monolateral sinusoidal voltage, keep first-harmonic composition wherein, when civil power is less than or equal to rated value, with the power adjusting level monolateral sinusoidal voltage is carried out power factor correction and voltage compensation; When civil power is too high, adopt sinusoidal cutting level, the part that exceeds rated value in the monolateral sinusoidal voltage is fed back to input stage carry out the voltage compensation of input voltage with this, carry out power factor correction then; When civil power interrupts, relay switches to storage battery power supply, by sine cutting level the storage battery direct current is cut into monolateral sinusoidal voltage and carry out voltage compensation, and the remainder of monolateral sinusoidal voltage under the cutting in the battery tension is fed back to input, by the monolateral sinusoidal voltage behind the low-voltage compensation, be reduced into sinewave output voltage by inverter stage again, be smoothed to direct voltage by filtering stage.
The current electrical network quality of power supply is more and more higher, can satisfy the demand of general domestic consumer, and required power is not proofreaied and correct; Because modern terminal equipment all has its own power source adapter, i.e. rectifier, terminal equipment itself just have and can reach the voltage stabilizing requirement of system according to the function of the variation control output amplitude of dispatch from foreign news agency, do not need to add a rectification circuit again; Simultaneously, electronic component is many in the technique scheme circuit, and circuit complexity, integrated level are not high, causes the interference between components and parts bigger, thereby influences stability and the reliability of circuit; Therefore, need on the basis of the existing terminal equipment of public users, utilize the modern power electronic device, develop a kind of brief, stability and high back-up source power-supplying circuit of reliability of designing.
The utility model content
Technical problem to be solved in the utility model is that existing back-up source control circuit electronic component is many, the circuit complexity, and stability and the not high problem of reliability, thus a kind of brief, stability and high back-up source power-supplying circuit of reliability of designing is provided.
For solving the problems of the technologies described above, the utility model is achieved through the following technical solutions:
A kind of back-up source power-supplying circuit comprises:
DC power supplier comprises an output, and described DC power supplier is used for externally providing DC power supply;
Electrical storage device comprises an input and an output, and described electrical storage device is used for externally providing DC power supply;
The power supply modular converter, comprise for the galvanic first input end that receives described DC power supplier output, be used for receiving galvanic second input and output that described electrical storage device is exported, the first input end of described power supply modular converter is connected with the output of described DC power supplier, is used for receiving the direct current that described DC power supplier provides; Second input of described power supply modular converter is connected with the output of described electrical storage device, is used for receiving the DC power supply that described electrical storage device provides; The output of described power supply modular converter is connected with subscriber terminal equipment; Described power supply modular converter is used for the power supply conversion of the described DC power supplier of control and described electrical storage device, when described DC power supplier externally provides direct current, the direct current that described power supply modular converter is controlled described DC power supplier offers subscriber terminal equipment, when described DC power supplier did not externally provide direct current, the direct current that described power supply modular converter is controlled described electrical storage device offered subscriber terminal equipment;
The electrical storage device charge control module comprises an input and an output, and the input of described electrical storage device charge control module is connected with the output of described DC power supplier, is used for receiving the DC power supply that described DC power supplier provides; The output of described electrical storage device charge control module is connected with the input of described electrical storage device, is used for the described electrical storage device of control and whether is in charged state; When described DC power supplier externally provides direct current, described electrical storage device charge control module detects the voltage of described electrical storage device, if the voltage of described electrical storage device is less than the lower threshold value of predeterminated voltage, the output of described electrical storage device charge control module is to the input output DC source of described electrical storage device, if the voltage of described electrical storage device is greater than or equal to the upper threshold value of described predeterminated voltage, the output of described electrical storage device charge control module stops the input output DC source to described electrical storage device.
Described electrical storage device charge control module comprises direct-flow voltage regulation unit and voltage detecting control unit.
Described direct-flow voltage regulation unit comprises an input and an output, and the input of described direct-flow voltage regulation unit is connected with the output of described DC power supplier; Described direct-flow voltage regulation unit is used for keeping the galvanic voltage constant of described DC power supplier output, and provides DC power supply to the voltage detecting control unit;
Described voltage detecting control unit, comprise first input end, second input and an output, the first input end of described voltage detecting control unit is connected with the output of described DC power supplier, is used for receiving the direct current of described DC power supplier output; Second input of described voltage detecting control unit is connected with the output of described direct-flow voltage regulation unit, is used for the direct current of the described direct-flow voltage regulation unit output of reception as working power, the described electrical storage device of output termination of described voltage detecting control unit; Described voltage detecting control unit is for detection of the voltage of described electrical storage device and control the charging of described electrical storage device, when the voltage of described electrical storage device during less than the lower threshold value of predeterminated voltage, described voltage detecting control unit sends charging signals, charge to described electrical storage device after the direct current transformation with described DC power supplier output, when the voltage of described electrical storage device is greater than or equal to the upper threshold value of predeterminated voltage, described voltage detecting control unit sends and stops filling signal, controls described DC power supplier and stops to described electrical storage device charging.
Described power supply modular converter comprises the transfer contact 1,2 and diode D7 of coil, the relay J 1 of relay J 1, J2; The normally opened contact of one end of the negative pole of described diode D7, described relay J 1, J2 coil, the transfer contact 1 of described relay J 1 connects the back and is connected with the output head anode of described DC power supplier as the first input end of described power supply modular converter is anodal jointly, and the normally opened contact of the other end of the positive pole of described diode D7, described relay J 1, J2 coil, the transfer contact 2 of described relay J 1 connects the back connects described DC power supplier jointly as the first input end negative pole of described power supply modular converter negative pole of output end; The normally-closed contact of the transfer contact 1 of described relay J 1 is connected with the output head anode of described electrical storage device as second input anode of described power supply modular converter, and the common of the transfer contact 1 of described relay J 1 is connected with the positive pole of subscriber terminal equipment as the output head anode of described power supply modular converter; The normally-closed contact of the transfer contact 2 of described relay J 1 is connected with the negative pole of output end of described electrical storage device as second input cathode of described power supply modular converter, and the common of the transfer contact 2 of described relay J 1 is connected with the negative pole of subscriber terminal equipment as the negative pole of output end of described power supply modular converter.
Described electrical storage device comprises storage power, the transfer contact 1 of fuse F1 and relay J 2,2, the positive pole of described storage power connects the end of described fuse F1, the common of the transfer contact 1 of the described relay J 2 of another termination of described fuse F1, the normally-closed contact of the transfer contact 1 of described relay J 2 is as the output head anode of described electrical storage device, the normally opened contact of the transfer contact 1 of described relay J 2 connects the output head anode of described electrical storage device charge control module as the input anode of described electrical storage device, the negative pole of described storage power connects the common of the transfer contact 2 of described relay J 2, the normally-closed contact of the transfer contact 2 of described relay J 2 is as the negative pole of output end of described electrical storage device, and the normally opened contact of the transfer contact 2 of described relay J 2 connects the negative pole of output end of described electrical storage device charge control module as the input cathode of described electrical storage device.
Described direct-flow voltage regulation unit comprises voltage stabilizing chip 7809, polar capacitor C1, C2, capacitor C 3, C4; The end anodal and described capacitor C 4 of the Vin pin of described voltage stabilizing chip 7809, described polar capacitor C1 links together jointly, simultaneously as the output of the input of described direct-flow voltage regulation unit, described DC power supplier, the first input end of described voltage detecting control unit; One end common ground of the GND pin of the negative pole of the other end of described capacitor C 4, described polar capacitor C1, described voltage stabilizing chip 7809, the negative pole of described polar capacitor C2 and described capacitor C 3, the Vout pin of the positive pole of the other end of described capacitor C 3, described polar capacitor C2 and described voltage stabilizing chip 7809 links together jointly, and the Vout pin of described voltage stabilizing chip 7809 is connected with second input of described voltage detecting control unit as the output of described direct-flow voltage regulation unit.
Described voltage detecting control unit comprises the NE556 chip, transformer T2, field effect transistor VD, resistance R 1, R2, R3, R4, R5, R6, R8, R9, capacitor C 5, C6, C7, diode D5; 13 pins of described NE556 chip are connected with the output of described direct-flow voltage regulation unit through second input that resistance R 1 and 14 pins, 4 pins of NE556 chip link together as described voltage detecting control unit; 12 pins of described NE556 chip are connected with 13 pins of described NE556 chip through described resistance R 2,11 pins of described NE556 chip are through described capacitor C 7 ground connection, 10 pins of described NE556 chip are connected with 5 pins, 8 pins of described NE556 chip are connected the back with 12 pins of described NE556 chip common through described capacitor C 5 back ground connection, 3 pins of described NE556 chip are through described capacitor C 6 ground connection, 9 pins of described NE556 chip are through described resistance R 3 and the grid that connects described field effect transistor after an end of described resistance R 6 is connected jointly, the other end ground connection of described resistance R 6; The drain electrode of described field effect transistor is connected with second input of described transformer T2, and the first input end of described transformer T2 is connected with the output of described DC power supplier 1 as the first input end of described voltage detecting control unit; The positive pole of described diode D5 is connected with first output of described transformer T2, and the output head anode that an end of the negative pole of described diode D5, described resistance R 8, an end of described resistance R 9 link together jointly as described voltage detecting control unit is connected with the input anode of described electrical storage device; The end of the common connecting resistance R4 of 6 pins of described resistance R 8 other ends and described NE556 chip, 2 pins of described resistance R 9 other ends and described NE556 chip connect an end of described resistance R 5 jointly; 7 pins of the other end of the other end of described resistance R 4, resistance R 5, the source electrode of described field effect transistor, described NE556 chip, second output of transformer T2 link together jointly, are connected with the input cathode of described electrical storage device as the negative pole of output end of described voltage detecting control unit.
Described electrical storage device charge control module also comprises for the direct current to the output of described DC power supplier carries out the secondary rectification and judges the rectification unit of galvanic both positive and negative polarity.
Described rectification unit comprises diode D1, D2, D3, D4, described diode D1, D2, D3, D4 constitutes full bridge rectifier, described rectification unit comprises first input end, second input, cathode output end and cathode output end, the link of the positive pole of described diode D1 and described diode D2 negative pole connects the negative pole of output end of described DC power supplier as the first input end of described rectification unit, the link of the positive pole of described diode D3 and described diode D4 negative pole is as the output head anode of the described DC power supplier of the second input termination of described rectification unit, the link of the negative pole of described diode D1 and described diode D3 negative pole connects the input of described direct-flow voltage regulation unit as the cathode output end of described rectification unit, the first input end of described voltage detecting control unit, the link of the positive pole of described diode D2 and described diode D4 positive pole is as the cathode output end ground connection of described rectification unit.
Described back-up source power-supplying circuit also comprises for the energy-conservation driver module that drives described power supply modular converter.
Described energy-conservation driver module comprises resistance R 10 and polar capacitor C8; One end of described resistance R 10, the positive pole of described polar capacitor C8 connect the back jointly as the output head anode of the described DC power supplier of input termination of described energy-conservation driver module, and the negative pole of the other end of described resistance R 10, described polar capacitor C8 connects the back and is connected with the first input end of described power supply modular converter as the output of described energy-conservation driver module jointly.
Described back-up source power-supplying circuit also comprises and is used to indicate the discharge indicating module whether described electrical storage device is in discharge condition; Described discharge indicating module comprises resistance R 11 and light-emitting diode D8; The positive pole of described light-emitting diode D8 is connected with an end of described resistance R 11, and the other end of described resistance R 11 is connected with the output head anode of described electrical storage device, and the negative pole of described light-emitting diode D8 is connected with the negative pole of output end of described electrical storage device.
Described electrical storage device is lithium battery.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) a kind of back-up source power-supplying circuit described in the utility model comprises DC power supplier, electrical storage device, power supply modular converter and electrical storage device charge control module; When described DC power supplier provides direct current to subscriber terminal equipment, described electrical storage device charge control module detects the voltage of described electrical storage device, when the voltage of described electrical storage device is greater than or equal to the upper threshold value of predeterminated voltage, described electrical storage device charge control module is controlled described electrical storage device and is stopped charging, when the voltage of electrical storage device during less than the lower threshold value of predeterminated voltage, the electrical storage device charge control module is to the electrical storage device output DC; When described DC power supplier did not externally provide direct current, described power supply modular converter was controlled described electrical storage device and is powered to subscriber terminal equipment, made subscriber terminal equipment keep operate as normal and protected the unlikely damage of its software and hardware.The utility model circuit structure is simple, and cost is low, is on the basis of public users existing equipment, utilizes the modern power electronic device, has developed the relative higher back-up source power-supplying circuit with reliability of a kind of stability.Above-mentioned back-up source power-supplying circuit has effectively been avoided back-up source power-supplying circuit complexity in the prior art, and unreasonable structure causes stability and the not high problem of reliability of circuit.
(2) core of the described voltage detecting control unit of back-up source power-supplying circuit described in the utility model is 556 timing circuits, described 556 timing circuits comprise two 555 timers, first 555 timer and peripheral electron element constitute a comparator, described resistance R 8, R9 are transferred to detected signal described comparator respectively and judge whether to stop charging, simultaneously output voltage and charge initiation voltage, by change described resistance R 8, R9 regulates its voltage swing; Thereby whether the oscillator that second 555 timer and peripheral electron element constitute comes the work control of control transformer T2 to charge to electrical storage device.Relatively for prior art, use less electronic devices and components to design, circuit structure is simple, the distribution space of electronic devices and components is relatively large in the circuit board of same size, interference each other is less, thereby effectively avoided charging control circuit circuit complexity in the prior art, stability and the not high problem of reliability.
(3) back-up source power-supplying circuit described in the utility model, described reserve power supply circuits also comprise for the energy-conservation driver module that drives described power supply modular converter, described energy-conservation driver module comprises polar capacitor and resistance, inverse electromotive force when utilizing the polar capacitor discharge strengthens the energy-conservation drive current of relay coil, accelerate the responsiveness of transfer contact, after action, utilize resistance to reduce the electric current of the relay of flowing through, reach and reduce the relay power consumption, play energy-conservation effect, when reducing power consumption, improved the reliability of circuit.
Description of drawings
Content of the present utility model is easier clearly to be understood in order to make, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein,
Fig. 1 is the structured flowchart of an embodiment of back-up source power-supplying circuit described in the utility model;
Fig. 2 is the johning knot composition of embodiment 1 described back-up source power-supplying circuit;
Fig. 3 is the johning knot composition of embodiment 2 described back-up source power-supplying circuits;
Fig. 4 is the johning knot composition of embodiment 3 described back-up source power-supplying circuits;
Fig. 5 is the back-up source charge control module circuit connection structure figure of back-up source power-supplying circuit described in the utility model.
Reference numeral: 1-DC power supplier; The 101-direct-flow voltage regulation unit; 102-voltage detecting control unit; The 103-rectification unit; 2-electrical storage device module; The 3-modular converter of powering; 4-electrical storage device charge control module; The energy-conservation driver module of 5-; The 6-indicating module that discharges.
Embodiment
Embodiment 1:
Present embodiment provides a kind of back-up source power-supplying circuit, its structured flowchart as shown in Figure 1, it comprises DC power supplier 1, electrical storage device 2, power supply modular converter 3 and electrical storage device charge control module 4.
Described DC power supplier 1 comprises an output, and described DC power supplier 1 is used for externally providing DC power supply.
In the present embodiment, described DC power supplier 1 comprises AC power and rectifier, wherein, described rectifier is used for AC rectification is become direct current, described rectifier comprises an input and an output, the input of described rectifier is connected with the output of described AC power, and the output of described rectifier is externally exported direct current.
Described electrical storage device 2 comprises an input and an output, and described electrical storage device 2 is used for externally providing DC power supply.
As shown in Figure 2, in the present embodiment, described electrical storage device 2 comprises storage power, the transfer contact 1 of fuse F1 and relay J 2,2, the positive pole of described storage power connects the end of described fuse F1, the common of the transfer contact 1 of the described relay J 2 of another termination of described fuse F1, the normally-closed contact of the transfer contact 1 of described relay J 2 is as the output head anode of described electrical storage device, the normally opened contact of the transfer contact 1 of described relay J 2 connects the output head anode of described electrical storage device charge control module as the input anode of described electrical storage device, the negative pole of described storage power connects the common of the transfer contact 2 of described relay J 2, the normally-closed contact of the transfer contact 2 of described relay J 2 is as the negative pole of output end of described electrical storage device, and the normally opened contact of the transfer contact 2 of described relay J 2 connects the negative pole of output end of described electrical storage device charge control module as the input cathode of described electrical storage device.
In the present embodiment, described storage power is lithium battery.
As other execution modes, described storage power can be nickel-cadmium cell, sodium-sulphur battery, lead-acid battery, nickel-zinc cell.
Described power supply modular converter 3, comprise for the galvanic first input end that receives described DC power supplier 1 output, be used for galvanic second input and an output that the described electrical storage device 2 of reception is exported, the first input end of described power supply modular converter 3 is connected with the output of described DC power supplier 1, is used for receiving the direct current that described DC power supplier 1 provides; Second input of described power supply modular converter 3 is connected with the output of described electrical storage device 2, is used for receiving the DC power supply that described electrical storage device 2 provides; The output of described power supply modular converter 3 is connected with subscriber terminal equipment; Described power supply modular converter 3 is used for the described DC power supplier 1 of control to be changed with the power supply of described electrical storage device 2, when described DC power supplier 1 externally provides direct current, the direct current of the described DC power supplier 1 of described power supply modular converter 3 controls offers subscriber terminal equipment, when described DC power supplier 1 did not externally provide direct current, the direct current of the described electrical storage device 2 of described power supply modular converter 3 controls offered subscriber terminal equipment.
In the present embodiment, as shown in Figure 2, described power supply modular converter 3 comprises the transfer contact 1,2 and diode D7 of the coil of relay J 1, J2 and relay J 1; The normally opened contact of one end of the negative pole of described diode D7, described relay J 1, J2 coil, the transfer contact 1 of described relay J 1 connects the back and is connected with the output head anode of described DC power supplier 1 as the first input end of described power supply modular converter 3 is anodal, and the normally opened contact of the other end of the positive pole of described diode D7, described relay J 1, J2 coil, the transfer contact 2 of described relay J 1 connects the back connects described DC power supplier 1 jointly as the first input end negative pole of described power supply modular converter 3 negative pole of output end; The normally-closed contact of the transfer contact 1 of described relay J 1 is connected with the output head anode of described electrical storage device 2 as second input anode of described power supply modular converter 3, and the common of the transfer contact 1 of described relay J 1 is connected with the positive pole of subscriber terminal equipment as the output head anode of described power supply modular converter 3; The normally-closed contact of the transfer contact 2 of described relay J 1 is connected with the negative pole of output end of described electrical storage device 2 as second input cathode of described power supply modular converter 3, and the common of the transfer contact 2 of described relay J 1 is connected with the negative pole of subscriber terminal equipment as the negative pole of output end of described power supply modular converter 3.
Electrical storage device charge control module 4, for detection of the voltage of described electrical storage device 2 and control described electrical storage device 2 and whether be in charged state, when described DC power supplier 1 externally provides direct current, the voltage of 4 pairs of described electrical storage devices 2 of described electrical storage device charge control module detects, when if the voltage of described electrical storage device 2 is lower than the lower threshold value of predeterminated voltage, described electrical storage device charge control module 4 is to described electrical storage device 2 chargings; If the voltage of described electrical storage device 2 is higher than or when equaling the upper threshold value of predeterminated voltage, described electrical storage device charge control module 4 stops to described electrical storage device 2 chargings; Described electrical storage device charge control module 4 comprises an input and an output, the input of described electrical storage device charge control module 4 is connected with the output of described DC power supplier 1, and the output of described electrical storage device charge control module 4 is connected with the input of described electrical storage device 2.
In the present embodiment, described electrical storage device charge control module 4 comprises direct-flow voltage regulation unit 101 and voltage detecting control unit 102.
Described direct-flow voltage regulation unit 101 is used for keeping the galvanic voltage constant of described DC power supplier 1 output, and provides DC power supply to voltage detecting control unit 102; Described direct-flow voltage regulation unit 101 comprises an input and an output, and the input of described direct-flow voltage regulation unit 101 is connected with the output of described DC power supplier 1.
As shown in Figure 5, described direct-flow voltage regulation unit 101 comprises voltage stabilizing chip 7809, polar capacitor C1, C2, capacitor C 3, C4; The end anodal and described capacitor C 4 of the Vin pin of described voltage stabilizing chip 7809, described polar capacitor C1 links together jointly, simultaneously as the input of described direct-flow voltage regulation unit 101, the output of described DC power supplier 1, the first input end of described voltage detecting control unit 102; One end common ground of the GND pin of the negative pole of the other end of described capacitor C 4, described polar capacitor C1, described voltage stabilizing chip 7809, the negative pole of described polar capacitor C2 and described capacitor C 3, the Vout pin of the positive pole of the other end of described capacitor C 3, described polar capacitor C2 and described voltage stabilizing chip 7809 links together jointly, and the Vout pin of described voltage stabilizing chip 7809 is that the output of described direct-flow voltage regulation unit 101 is connected with second input of described voltage detecting control unit 102.
Described voltage detecting control unit 102, for detection of the voltage of electrical storage device 2 and control the charging of electrical storage device 2, when the voltage of described electrical storage device 2 during less than the lower threshold value of predeterminated voltage, described voltage detecting control unit 102 sends charging signals, to charge to described electrical storage device 2 after the direct current transformation of described DC power supplier 1 output, when the voltage of described electrical storage device 2 is greater than or equal to the upper threshold value of predeterminated voltage, described voltage detecting control unit 102 sends and stops filling signal, controls described DC power supplier 1 and stops to described electrical storage device 2 chargings; Described voltage detecting control unit 102 comprises first input end, second input and an output, the first input end of described voltage detecting control unit 102 is connected with the output of described DC power supplier 1, is used for receiving the direct current of described DC power supplier 1 output; Second input of described voltage detecting control unit 102 is connected with the output of described direct-flow voltage regulation unit 101, be used for the described direct current of described direct-flow voltage regulation unit 101 outputs of reception as working power, the described electrical storage device 2 of the output termination of described voltage detecting control unit 102.
As shown in Figure 5, voltage detecting control unit 102 comprises the NE556 chip, transformer T2, field effect transistor VD, resistance R 1, R2, R3, R4, R5, R6, R8, R9, capacitor C 5, C6, C7, diode D5; 13 pins of described NE556 chip are connected with the output of described direct-flow voltage regulation unit 101 through second input that resistance R 1 and 14 pins, 4 pins of NE556 chip link together as described voltage detecting control unit 102; 12 pins of described NE556 chip are connected with 13 pins of described NE556 chip through described resistance R 2,11 pins of described NE556 chip are through described capacitor C 7 ground connection, 10 pins of described NE556 chip are connected with 5 pins, 8 pins of described NE556 chip are connected the back with 12 pins of described NE556 chip common through described capacitor C 5 back ground connection, 3 pins of described NE556 chip are through described capacitor C 6 ground connection, 9 pins of described NE556 chip are through described resistance R 3 and the grid G that connects described field effect transistor after an end of described resistance R 6 is connected jointly, the other end ground connection of described resistance R 6; The drain D of described field effect transistor is connected with second input of described transformer T2, and the first input end of described transformer T2 is connected with the output of described DC power supplier 1 as the first input end of described voltage detecting control unit 102; The positive pole of described diode D5 is connected with first output of described transformer T2, and the output head anode that an end of the negative pole of described diode D5, described resistance R 8, an end of described resistance R 9 link together jointly as described voltage detecting control unit 102 is connected with the input anode of described electrical storage device 2; The end of the common connecting resistance R4 of 6 pins of described resistance R 8 other ends and described NE556 chip, 2 pins of described resistance R 9 other ends and described NE556 chip connect an end of described resistance R 5 jointly; 7 pins of the other end of the other end of described resistance R 4, resistance R 5, the source S of described field effect transistor, described NE556 chip, second output of transformer T2 link together jointly, are connected with the input cathode of described electrical storage device 2 as the negative pole of output end of described voltage detecting control unit 102.
As shown in Figure 5, the core of described voltage detecting control unit 102 is made up of 556 timing circuits, described 556 timing circuits comprise two 555 timers, first 555 timer pin comprises 1 to No. 6 pin of described NE556 chip, described first 555 timer and described resistance R 8, R9, described resistance R 4, R5 constitutes the electric voltage observation circuit of described electrical storage device 2, second 555 timer pin comprises 8 to No. 13 pins of described NE556 chip, described second 555 timer and described capacitor C 5, described resistance R 1, R2 constitutes the conducting cut-off state that an oscillator is controlled described field effect transistor VD, the direct current of described DC power supplier 1 output is become square wave, improve the square wave amplitude through described transformer T2 again, be rectified into DC power supply by diode D5 and give lithium cell charging.
Described comparator operation principle: when described resistance R 9 detects described storage power voltage less than the lower threshold value of predeterminated voltage, described first 555 timer output end, 5 pins are high level, putting described second 555 timer reset terminals, 10 pin is high level, described second 555 timer operate as normal, control described transformer T2 work, the direct current of described DC power supplier 1 output is changed into the voltage that the electric pressure with described electrical storage device 2 is complementary, and lithium battery charges normal; When detecting lithium battery, described resistance R 8 presses when being elevated to upper voltage limit, described first 555 timer is output as low level, putting described second 555 timer reset terminals, 10 pin is low level, described oscillator quits work, described field effect transistor VD is in cut-off state, control described transformer T2 and quit work, described lithium battery stops charging.
Described oscillator operation principle: when described second 555 timer reset terminals, 10 pin are high level, described oscillator operate as normal circuit is connected, described capacitor C 5 chargings, when described capacitor C 5 voltage Vc reach 2/3Vcc, Vcc is described 556 chip operating voltages, described second 555 timer output ends, 5 pin are low level, described field effect transistor gate-source voltage Vgs is 0, Id is very little for its drain current, the drain-source utmost point ends, the inner triode T of simultaneously described second 555 timer conducting, and described capacitor C 5 is by described resistance R 2 and described triode T discharge, Vc descends, when Vc dropped to 1/3Vcc, described second 555 timer output ends, 5 pin upset was high level, and discharge finishes, described triode T ends, described field effect transistor Vgs increases, and the Id electric current increases, the conducting of the drain-source utmost point, by adjusting described capacitor C 5 and described resistance R 1, the value of R2 just can form the oscillator of fixed frequency, the following formula of frequency computation part:
The core of described voltage detecting control unit 102 comprises 556 timing circuits, described 556 timing circuits comprise two 555 timers, described first 555 timer and peripheral electron element constitute a comparator, described resistance R 8, R9 are transferred to described comparator with detected signal respectively, described comparator is by relatively judging whether to stop charging, simultaneously by changing described resistance R 8, R9 resistance the regulation voltage upper limit and lower voltage limit voltage respectively; Thereby whether whether the oscillator that described second 555 timer and peripheral electron element constitute work control to electrical storage device 2 chargings by control transformer.
As other execution modes, described electrical storage device charge control module 4 also comprises for the direct current to 1 output of described DC power supplier carries out the secondary rectification and judges the rectification unit 103 of this galvanic both positive and negative polarity.
As shown in Figure 5, described rectification unit 103 comprises diode D1, D2, D3, D4, described diode D1, D2, D3, D4 constitutes full bridge rectifier, described rectification unit 103 comprises first input end, second input, cathode output end and cathode output end, the link of the positive pole of described diode D1 and described diode D2 negative pole connects the negative pole of output end of described DC power supplier 1 as the first input end of described rectification unit 103, the link of the positive pole of described diode D3 and described diode D4 negative pole is as the output head anode of the described DC power supplier 1 of the second input termination of described rectification unit 103, the link of the negative pole of described diode D1 and described diode D3 negative pole connects the input of described direct-flow voltage regulation unit 101 as the cathode output end of described rectification unit 103, the first input end of described voltage detecting control unit 102, the link of the positive pole of described diode D2 and described diode D4 positive pole is as the cathode output end ground connection of described rectification unit 103.
The described back-up source power-supplying circuit of present embodiment, when described DC power supplier 1 provides direct current, the described relay J 1 of described power supply modular converter 3, J2 is charged, relay J 1-1, J1-2 normally opened contact closure, powered to subscriber terminal equipment by described DC power supplier 1, while relay J 2-1, the normally opened contact closure of J2-2, described electrical storage device charge control module 4 is connected with electrical storage device 2, the described voltage detecting control unit 102 of described electrical storage device charge control module 4 detects the voltage of described electrical storage device 2, when the voltage of described electrical storage device 2 is greater than or equal to predeterminated voltage, the described electrical storage device 2 of described voltage detecting control unit 102 controls of described electrical storage device charge control module 4 stops charging, when the voltage of electrical storage device 2 during less than the lower threshold value of predeterminated voltage, the described voltage detecting control unit 102 of electrical storage device charge control module 4 makes described electrical storage device 2 be in charged state to electrical storage device 2 output DCs; When described DC power supplier 1 does not provide direct current, the described relay J 1 of described power supply modular converter 3, J2 dead electricity, relay J 1-1, J1-2 normally-closed contact closure, the normally-closed contact closure of relay J 2-1, J2-2 is powered to subscriber terminal equipment by described electrical storage device 2 simultaneously; When described DC power supplier 1 provided direct current, described power supply modular converter 3 was converted to described DC power supplier 1 and powers to customer terminal equipment.
A kind of back-up source power-supplying circuit described in the utility model, comprise DC power supplier 1, electrical storage device 2, power supply modular converter 3 and electrical storage device charge control module 4, when 1 pair of subscriber terminal equipment of described DC power supplier provides direct current, described electrical storage device charge control module 4 detects the voltage of described electrical storage device 2, when the voltage of described electrical storage device 2 is greater than or equal to predeterminated voltage, the described electrical storage device 2 of described electrical storage device charge control module 4 controls stops charging, when the voltage of electrical storage device 2 during less than the lower threshold value of predeterminated voltage, electrical storage device charge control module 4 is to electrical storage device 2 output DCs; When described DC power supplier 1 did not externally provide direct current, the described electrical storage device 2 of described power supply modular converter 3 controls was to the subscriber terminal equipment power supply, made subscriber terminal equipment keep operate as normal and protected it not to be damaged.The utility model circuit structure is simple, and cost is low, is on the basis of public users existing equipment, utilizes the modern power electronic device, has developed the relative higher back-up source power-supplying circuit with reliability of a kind of stability.Above-mentioned back-up source power-supplying circuit has effectively been avoided back-up source power-supplying circuit complexity in the prior art, and unreasonable structure causes stability and the not high problem of reliability of circuit.
Back-up source power-supplying circuit described in the utility model, the core of described voltage detecting control unit 102 is 556 timing circuits, described 556 timing circuits comprise two 555 timers, first 555 timer and peripheral electron element constitute a comparator, piezo-resistance RT1, RT2 are transferred to detected signal described comparator respectively and judge whether to stop charging, output voltage and charge initiation voltage are regulated its voltage swing by adjustable piezo-resistance RT1, RT2 simultaneously; Thereby whether the oscillator that second 555 timer and peripheral electron element constitute comes the work control of control transformer T to charge to electrical storage device.Relatively for prior art, use less electronic devices and components to design, circuit is simple, the distribution space of electronic devices and components is relatively large in the circuit board of same size, interference each other is less, thereby effectively avoided charging control circuit circuit complexity in the prior art, stability and the not high problem of reliability.
Embodiment 2:
On the basis of embodiment 1, described back-up source power-supplying circuit also comprises for the energy-conservation driver module 5 that drives described power supply modular converter 3.
In the present embodiment, as shown in Figure 3, described energy-conservation driver module 5 comprises resistance R 10 and polar capacitor C8; One end of described resistance R 10, the positive pole of described polar capacitor C8 connect the back jointly as the output head anode of the described DC power supplier 1 of input termination of described energy-conservation driver module 5, and the negative pole of the other end of described resistance R 10, described polar capacitor C8 connects the back and is connected with the first input end of described power supply modular converter 3 as the output of described energy-conservation driver module 5 jointly.Inverse electromotive force when described energy-conservation driver module 5 utilizes described polar capacitor C8 to discharge strengthens the energy-conservation drive current of relay coil, accelerate the responsiveness of transfer contact, after action, utilize described resistance R 10 to reduce the electric current of the relay of flowing through, reach and reduce the relay power consumption, play energy-conservation effect, when reducing power consumption, improved the reliability of circuit.
Embodiment 3:
On above-described embodiment 1,2 basis, described back-up source power-supplying circuit also comprises and is used to indicate the discharge indicating module 6 whether described electrical storage device 2 is in discharge condition.
In the present embodiment, as shown in Figure 4, described discharge indicating module 6 comprises resistance R 11 and light-emitting diode D8; The positive pole of described light-emitting diode D8 is connected with an end of described resistance R 11, and the other end of described resistance R 11 is connected with the output head anode of described electrical storage device 2, and the negative pole of described light-emitting diode D8 is connected with the negative pole of output end of described electrical storage device 2.When described light-emitting diode D8 is bright, shows by described electrical storage device 2 and power to subscriber terminal equipment, when described light-emitting diode D8 does not work, show that described electrical storage device 2 to power to subscriber terminal equipment.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And the apparent variation of being extended out thus or change still are among the protection range of the invention.
Claims (10)
1. a back-up source power-supplying circuit is characterized in that, comprising:
DC power supplier comprises an output, and described DC power supplier is used for externally providing DC power supply;
Electrical storage device comprises an input and an output, and described electrical storage device is used for externally providing DC power supply;
The power supply modular converter, comprise for the galvanic first input end that receives described DC power supplier output, be used for receiving galvanic second input and output that described electrical storage device is exported, the first input end of described power supply modular converter is connected with the output of described DC power supplier, is used for receiving the direct current that described DC power supplier provides; Second input of described power supply modular converter is connected with the output of described electrical storage device, is used for receiving the DC power supply that described electrical storage device provides; The output of described power supply modular converter is connected with subscriber terminal equipment; Described power supply modular converter is used for the power supply conversion of the described DC power supplier of control and described electrical storage device, when described DC power supplier externally provides direct current, the direct current that described power supply modular converter is controlled described DC power supplier offers subscriber terminal equipment, when described DC power supplier did not externally provide direct current, the direct current that described power supply modular converter is controlled described electrical storage device offered subscriber terminal equipment;
The electrical storage device charge control module comprises an input and an output, and the input of described electrical storage device charge control module is connected with the output of described DC power supplier, is used for receiving the DC power supply that described DC power supplier provides; The output of described electrical storage device charge control module is connected with the input of described electrical storage device, is used for the described electrical storage device of control and whether is in charged state; When described DC power supplier externally provides direct current, described electrical storage device charge control module detects the voltage of described electrical storage device, if the voltage of described electrical storage device is less than the lower threshold value of predeterminated voltage, the output of described electrical storage device charge control module is to the input output DC source of described electrical storage device, if the voltage of described electrical storage device is greater than or equal to the upper threshold value of predeterminated voltage, the output of described electrical storage device charge control module stops the input output DC source to described electrical storage device.
2. back-up source power-supplying circuit according to claim 1, it is characterized in that: described electrical storage device charge control module comprises direct-flow voltage regulation unit and voltage detecting control unit, wherein,
Described direct-flow voltage regulation unit comprises an input and an output, and the input of described direct-flow voltage regulation unit is connected with the output of described DC power supplier; Described direct-flow voltage regulation unit is used for keeping the galvanic voltage constant of described DC power supplier output, and provides DC power supply to the voltage detecting control unit;
Described voltage detecting control unit, comprise first input end, second input and an output, the first input end of described voltage detecting control unit is connected with the output of described DC power supplier, is used for receiving the direct current of described DC power supplier output; Second input of described voltage detecting control unit is connected with the output of described direct-flow voltage regulation unit, is used for the direct current of the described direct-flow voltage regulation unit output of reception as working power, the described electrical storage device of output termination of described voltage detecting control unit; Described voltage detecting control unit is for detection of the voltage of described electrical storage device and control the charging of described electrical storage device, when the voltage of described electrical storage device during less than the lower threshold value of predeterminated voltage, described voltage detecting control unit sends charging signals, charge to described electrical storage device after the direct current transformation with described DC power supplier output, when the voltage of described electrical storage device is greater than or equal to the upper threshold value of predeterminated voltage, described voltage detecting control unit sends and stops filling signal, controls described DC power supplier and stops to described electrical storage device charging.
3. back-up source power-supplying circuit according to claim 2 is characterized in that:
Described power supply modular converter comprises the transfer contact 1,2 and diode D7 of coil, the relay J 1 of relay J 1, J2;
The normally opened contact of one end of the negative pole of described diode D7, described relay J 1, J2 coil, the transfer contact 1 of described relay J 1 connects the back and is connected with the output head anode of described DC power supplier as the first input end of described power supply modular converter is anodal jointly, and the normally opened contact of the other end of the positive pole of described diode D7, described relay J 1, J2 coil, the transfer contact 2 of described relay J 1 connects the back connects described DC power supplier jointly as the first input end negative pole of described power supply modular converter negative pole of output end; The normally-closed contact of the transfer contact 1 of described relay J 1 is connected with the output head anode of described electrical storage device as second input anode of described power supply modular converter, and the common of the transfer contact 1 of described relay J 1 is connected with the positive pole of subscriber terminal equipment as the output head anode of described power supply modular converter; The normally-closed contact of the transfer contact 2 of described relay J 1 is connected with the negative pole of output end of described electrical storage device as second input cathode of described power supply modular converter, and the common of the transfer contact 2 of described relay J 1 is connected with the negative pole of subscriber terminal equipment as the negative pole of output end of described power supply modular converter.
4. back-up source power-supplying circuit according to claim 3 is characterized in that:
Described electrical storage device comprises storage power, the transfer contact 1 of fuse F1 and relay J 2,2, the positive pole of described storage power connects the end of described fuse F1, the common of the transfer contact 1 of the described relay J 2 of another termination of described fuse F1, the normally-closed contact of the transfer contact 1 of described relay J 2 is as the output head anode of described electrical storage device, the normally opened contact of the transfer contact 1 of described relay J 2 connects the output head anode of described electrical storage device charge control module as the input anode of described electrical storage device, the negative pole of described storage power connects the common of the transfer contact 2 of described relay J 2, the normally-closed contact of the transfer contact 2 of described relay J 2 is as the negative pole of output end of described electrical storage device, and the normally opened contact of the transfer contact 2 of described relay J 2 connects the negative pole of output end of described electrical storage device charge control module as the input cathode of described electrical storage device.
5. back-up source power-supplying circuit according to claim 4 is characterized in that:
Described direct-flow voltage regulation unit comprises voltage stabilizing chip 7809, polar capacitor C1, C2, capacitor C 3, C4;
The end anodal and described capacitor C 4 of the Vin pin of described voltage stabilizing chip 7809, described polar capacitor C1 links together jointly, simultaneously as the output of the input of described direct-flow voltage regulation unit, described DC power supplier, the first input end of described voltage detecting control unit; One end common ground of the GND pin of the negative pole of the other end of described capacitor C 4, described polar capacitor C1, described voltage stabilizing chip 7809, the negative pole of described polar capacitor C2 and described capacitor C 3, the Vout pin of the positive pole of the other end of described capacitor C 3, described polar capacitor C2 and described voltage stabilizing chip 7809 links together jointly, and the Vout pin of described voltage stabilizing chip 7809 is connected with second input of described voltage detecting control unit as the output of described direct-flow voltage regulation unit.
6. according to claim 4 or 5 described back-up source power-supplying circuits, it is characterized in that: described voltage detecting control unit comprises the NE556 chip, transformer T2, field effect transistor VD, resistance R 1, R2, R3, R4, R5, R6, R8, R9, capacitor C 5, C6, C7, diode D5;
13 pins of described NE556 chip are connected with the output of described direct-flow voltage regulation unit through second input that resistance R 1 and 14 pins, 4 pins of NE556 chip link together as described voltage detecting control unit; 12 pins of described NE556 chip are connected with 13 pins of described NE556 chip through described resistance R 2,11 pins of described NE556 chip are through described capacitor C 7 ground connection, 10 pins of described NE556 chip are connected with 5 pins, 8 pins of described NE556 chip are connected the back with 12 pins of described NE556 chip common through described capacitor C 5 back ground connection, 3 pins of described NE556 chip are through described capacitor C 6 ground connection, 9 pins of described NE556 chip are through described resistance R 3 and the grid that connects described field effect transistor after an end of described resistance R 6 is connected jointly, the other end ground connection of described resistance R 6; The drain electrode of described field effect transistor is connected with second input of described transformer T2, and the first input end of described transformer T2 is connected with the output of described DC power supplier as the first input end of described voltage detecting control unit; The positive pole of described diode D5 is connected with first output of described transformer T2, and the output head anode that an end of the negative pole of described diode D5, described resistance R 8, an end of described resistance R 9 link together jointly as described voltage detecting control unit is connected with the input anode of described electrical storage device; The end of the common connecting resistance R4 of 6 pins of described resistance R 8 other ends and described NE556 chip, 2 pins of described resistance R 9 other ends and described NE556 chip connect an end of described resistance R 5 jointly; 7 pins of the other end of the other end of described resistance R 4, resistance R 5, the source electrode of described field effect transistor, described NE556 chip, second output of transformer T2 link together jointly, are connected with the input cathode of described electrical storage device as the negative pole of output end of described voltage detecting control unit.
7. back-up source power-supplying circuit according to claim 6 is characterized in that: described electrical storage device charge control module also comprises for the direct current to described DC power supplier output carries out the secondary rectification and judges the rectification unit of galvanic both positive and negative polarity;
Described rectification unit comprises diode D1, D2, D3, D4, described diode D1, D2, D3, D4 constitutes full bridge rectifier, described rectification unit comprises first input end, second input, cathode output end and cathode output end, the link of the positive pole of described diode D1 and described diode D2 negative pole connects the negative pole of output end of described DC power supplier as the first input end of described rectification unit, the link of the positive pole of described diode D3 and described diode D4 negative pole is as the output head anode of the described DC power supplier of the second input termination of described rectification unit, the link of the negative pole of described diode D1 and described diode D3 negative pole connects the input of described direct-flow voltage regulation unit as the cathode output end of described rectification unit, the first input end of described voltage detecting control unit, the link of the positive pole of described diode D2 and described diode D4 positive pole is as the cathode output end ground connection of described rectification unit.
8. back-up source power-supplying circuit according to claim 7 is characterized in that:
Described back-up source power-supplying circuit also comprises for the energy-conservation driver module that drives described power supply modular converter;
Described energy-conservation driver module comprises resistance R 10 and polar capacitor C8; One end of described resistance R 10, the positive pole of described polar capacitor C8 connect the back jointly as the output head anode of the described DC power supplier of input termination of described energy-conservation driver module, and the negative pole of the other end of described resistance R 10, described polar capacitor C8 connects the back and is connected with the first input end of described power supply modular converter as the output of described energy-conservation driver module jointly.
9. back-up source power-supplying circuit according to claim 8 is characterized in that:
Described back-up source power-supplying circuit also comprises and is used to indicate the discharge indicating module whether described electrical storage device is in discharge condition;
Described discharge indicating module comprises resistance R 11 and light-emitting diode D8; The positive pole of described light-emitting diode D8 is connected with an end of described resistance R 11, and the other end of described resistance R 11 is connected with the output head anode of described electrical storage device, and the negative pole of described light-emitting diode D8 is connected with the negative pole of output end of described electrical storage device.
10. back-up source power-supplying circuit according to claim 9, it is characterized in that: described storage power is lithium battery.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320295133 CN203233232U (en) | 2013-05-27 | 2013-05-27 | Power supply control circuit of backup power source |
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| CN 201320295133 CN203233232U (en) | 2013-05-27 | 2013-05-27 | Power supply control circuit of backup power source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269118A (en) * | 2013-05-27 | 2013-08-28 | 浙江南峰电气有限公司 | Back-up source power supply control circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269118A (en) * | 2013-05-27 | 2013-08-28 | 浙江南峰电气有限公司 | Back-up source power supply control circuit |
| CN103269118B (en) * | 2013-05-27 | 2016-05-25 | 浙江南峰电气有限公司 | A kind of back-up source power-supplying circuit |
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