CN103248100A - Back-up power source charging-discharging control circuit - Google Patents
Back-up power source charging-discharging control circuit Download PDFInfo
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Abstract
The invention provides a back-up power source charging-discharging control circuit, which comprises a direct-current power supply module, an electric power storage device, a power supply conversion module, an electric power storage device charging control module and an electric power storage device discharging control module, when the direct-current power supply module is powered, when the direct-current power supply module is not powered, the power supply conversion module controls the electric power storage device to power a user terminal device, the electric power storage device charging control module detects the voltage of the electric power storage device and controls whether the electric power storage device stays at a charging state or not; and the electric power storage device discharging control module detects the voltage of the electric power storage device and controls whether the electric power storage device stays at a discharge state or not. The back-up power source charging-discharging control circuit is simple in structure, low in cost and relatively high in stability and reliability.
Description
Technical field
The present invention relates to a kind of communication electric supply installation, specifically is a kind of back-up source charge-discharge control circuit, belongs to communication technical field.
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 peripheral electron element spare 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 mobile upgrading optical fiber, equipment such as light cat need power supply, and 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 stay at home or the interior back-up source of installing of some small-sized Administrative Areas, the communication network of family or Administrative Area interruption when occurring can't powering unusually in order to civil power.
Modern back-up source is generally the back-up source of no-reverse change device, no power consumption, directly removes AC/DC rectifier converter, DC/DC converter, DC/AC inversion converter in the civil power communication channel; Remove DC/DC booster converter, DC/DC charging converter and DC/AC inversion converter in the storage battery direct current channel; After removing these five kinds of power inverters, whole back-up source is remaining static switch, storage battery and charge controller thereof only, when civil power just often, externally powered through forming direct current behind the reorganizer by civil power, when mains failure, directly powered to subscriber terminal equipment by storage battery.
Existing Chinese patent literature CN1750355A discloses a kind of green back-up source, 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.
In fact, the current electrical network quality of power supply 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 reorganizer again; Above-mentioned technical scheme is not effectively controlled charging and discharging of accumulator, and overcharging and crossing of storage battery put the life-span that all can have a strong impact on storage battery; Simultaneously, electronic component is many in this technical scheme circuit, and the circuit complexity causes the distance of components and parts intensive, and the interference between the components and parts is bigger, thereby the stability and the reliability that influence circuit are not high; 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 charge-discharge control circuit of reliability of designing.
Summary of the invention
Technical problem to be solved by this invention 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 charge-discharge control circuit of reliability of designing is provided.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of back-up source charge-discharge control circuit comprises:
DC power supplier comprises an output, and described DC power supplier is used for externally providing direct current;
Electrical storage device comprises an input and an output, and described electrical storage device is used for externally providing direct current;
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 direct current 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 conversion of powering of the described DC power supplier of control and described electrical storage device, when described DC power supplier externally provides direct current, described power supply modular converter offers subscriber terminal equipment with the direct current of described DC power supplier, when described DC power supplier did not externally provide direct current, described power supply modular converter offered subscriber terminal equipment with the direct current of described electrical storage device;
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 direct current 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 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 preset upper limit voltage lower threshold value, the output of described electrical storage device charge control module is to the input output DC of described electrical storage device, if the voltage of described electrical storage device is greater than or equal to described preset upper limit voltage upper threshold value, the output of described electrical storage device charge control module stops the input output DC to described electrical storage device;
Electrical storage device discharge control module comprises an input, and the input of described electrical storage device discharge control module is connected with the output of described electrical storage device; When described electrical storage device externally provides direct current, described electrical storage device discharge control module detects the voltage of described electrical storage device, if the voltage of described electrical storage device is less than or equal to default lower voltage limit, described electrical storage device discharge control module is controlled the not external output DC of output of described electrical storage device, if the voltage of described electrical storage device is greater than described default lower voltage limit, described electrical storage device discharge control module is controlled the external output DC of output of described electrical storage device.
Described electrical storage device discharge control module comprises under-voltage detection control unit and under-voltage protection unit.
Described under-voltage detection control unit comprises an input and an output, and the input of described under-voltage detection control unit is as the output of the described electrical storage device of input termination of described electrical storage device discharge control module; Described under-voltage detection control unit is for detection of the voltage of described electrical storage device; when the voltage of described electrical storage device is less than or equal to described default lower voltage limit; described under-voltage detection control unit is to described under-voltage protection unit output action signal; when the voltage of described electrical storage device during greater than described default lower voltage limit, described under-voltage detection control unit is to the described under-voltage protection unit output signal of being failure to actuate.
Described under-voltage protection unit comprises an input, and the output of the described under-voltage detection control unit of input termination of described under-voltage protection unit is for the output signal that receives described under-voltage detection control unit; When described under-voltage protection unit receives the actuating signal of described under-voltage detection control unit output; thereby the action of described under-voltage protection unit is controlled described electrical storage device and is stopped externally to provide direct current; when described under-voltage protection unit receives being failure to actuate during signal of described under-voltage detection control unit output; be failure to actuate in described under-voltage protection unit, described electrical storage device continues externally to provide direct current.
Described electrical storage device charge control module comprises direct-flow voltage regulation unit and voltage detecting control unit.
Described direct-flow voltage regulation unit, comprise an input and an output, 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 DC power supplier output, and provides direct current to the voltage detecting control unit.
Described voltage detecting control unit, 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 direct-flow voltage regulation unit is exported, 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 electrical storage device and control the charging of described electrical storage device, when the voltage of described electrical storage device is lower than the upper threshold value of preset upper limit voltage lower threshold value, 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 higher than or equals the lower threshold value of preset upper limit voltage upper threshold value, 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 diode D7, light-emitting diode D8, resistance R 11, relay J 3, J4, J5, relay J 4 transfer contacts 2, relay J 5 transfer contacts 2; The positive pole of diode D7, the negative pole of light-emitting diode D8, relay J 3, J4, J5 coil one end, the normally opened contact of described relay J 4 transfer contacts 2 connects the back and connects described DC power supplier negative pole of output end as the first input end negative pole of described power supply modular converter jointly, the positive pole of described light-emitting diode D8 is connected with an end of resistance R 11, resistance R 11 other ends, the negative pole of diode D7, relay J 3, J4, the other end of J5 coil, the normally opened contact of described relay J 5 transfer contacts 2 connects described DC power supplier output head anode as the first input end positive pole of described power supply modular converter; The normally-closed contact of described relay J 5 transfer contacts 2 connects the output head anode of described electrical storage device as second input anode of described power supply modular converter, the normally-closed contact of described relay J 4 transfer contacts 2 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 common of relay J 5 transfer contacts 2 and relay J 4 transfer contacts 2 is connected the common described subscriber terminal equipment of output termination as described power supply modular converter in back.
Described under-voltage detection control unit comprises resistance R 20, R18, R21, R19, capacitor C 11, C12, polar capacitor C13, C14, diode D11, D12, D14, triode Q2, relay J 1, controllable silicon DR1; Described under-voltage protection unit comprises magnetic latching relay J2, relay J 1 transfer contact 1,2, relay J 3 transfer contacts 1,2; The normally opened contact of the positive pole of one end of described resistance R 18, an end of described capacitor C 11, described diode D14, an end of described resistance R 20, an end of described relay J 1 coil, 1 transfer contact 1 of described relay J connects the back and is connected with the output of described electrical storage device as the input of electrical storage device discharge control module jointly; One end of the negative pole of described diode D14, described resistance R 19, an end of described capacitor C 12 connect the back and are connected with the base stage of described triode Q2 jointly, and the emitter of the other end of the other end of described resistance R 18, described capacitor C 11, the other end of described resistance R 19, the other end of described capacitor C 12, described triode Q2 connects the back common ground; The control utmost point of one end of the collector electrode of described triode Q2, described resistance R 21, the positive pole of described polar capacitor C13, described controllable silicon DR1 connects the back and is connected with the other end of described resistance R 20 jointly, and the negative pole of the other end of described resistance R 21 and the negative pole of described polar capacitor C13, described controllable silicon DR1 is connected the back common ground; The other end of described relay J 1 coil is connected with the positive pole of described diode D11, the positive pole of described diode D12 simultaneously, the negative pole of described diode D11 is connected with the positive pole of described controllable silicon DR1, the negative pole of described diode D12 is connected with the positive pole of described polar capacitor C14, and the negative pole of described polar capacitor C14 is connected the back common ground with the normally opened contact of described relay J 1 transfer contact 2; The common of described relay J 1 transfer contact 2 connects the normally-closed contact of described relay J 3 transfer contacts 2, the common of described relay J 3 transfer contacts 2 connects the end of described magnetic latching relay J2, the common of described relay J 3 transfer contacts 1 of another termination of described magnetic latching relay J2, the normally opened contact ground connection of described relay J 3 transfer contacts 1, the normally-closed contact of described relay J 3 transfer contacts 1 connects the common of described relay J 1 transfer contact 1.
Described electrical storage device comprises storage power, fuse F2, magnetic latching relay J2 transfer contact 1, relay J 4 transfer contacts 1; The output head anode of described storage power is connected with the end of described fuse F2, the other end of described fuse F2 is connected with the common of the transfer contact 1 of magnetic latching relay J2, it is common as the external output DC of the output of described electrical storage device that the common of the normally-closed contact of the transfer contact 1 of described magnetic latching relay J2,4 transfer contacts 1 of described relay J connects the back, and the normally-closed contact of described relay J 4 transfer contacts 1 is connected with the normally-closed contact of described relay J 5 transfer contacts 2; The normally opened contact of the transfer contact 1 of described magnetic latching relay J2, the negative pole of output end of described storage power connect the back common ground; The normally opened contact of described relay J 4 transfer contacts 1 is connected with the output of described electrical storage device charge control module as the input of described electrical storage device.
Described electrical storage device discharge control module comprises that also described debugging unit comprises resistance R 16, R17 for the debugging unit of debugging by described under-voltage detection control unit electric current; One end of described resistance R 16 is connected with the normally opened contact of described relay J 1 transfer contact 1 as the input of described debugging unit, the other end of described resistance R 16 is connected with an end of described resistance R 17, and described resistance R 17 other ends are connected with the positive pole of described diode D14 as the output of described debugging unit.
Described back-up source charge-discharge control circuit also comprises driver module, described driver module comprises for first driver element that drives described power supply modular converter and is used for driving second driver element of described electrical storage device discharge control module, described first driver element comprises resistance R 10 and polar capacitor C10, and described second driver element comprises polar capacitor C8 and resistance R 15;
One end of described resistance R 10, the positive pole of described polar capacitor C10 connect the back connects described DC power supplier jointly as the input anode of described first driver element output head anode, are used for receiving the DC power supply that described DC power supplier provides; The negative pole of the other end of described resistance R 10, described polar capacitor C10 connects the back meets described relay J 3, J4, J5 jointly as the negative pole of output end of described first driver element a end, the negative pole of output end of the described DC power supplier of another termination of described relay J 3, J4, J5; One end of resistance R 15, the negative pole of polar capacitor C8 connect the back jointly as the normally opened contact of described relay J 3 transfer contacts 2 of the output termination of described second driver element, and the positive pole of the other end of resistance R 15, described polar capacitor C8 connects the back jointly as the output of the described electrical storage device charge control module of input termination of described second driver element.
Described back-up source charge-discharge control circuit also comprises and is used to indicate the indicating member that discharges and recharges whether described electrical storage device is in charging and discharging state, describedly discharge and recharge the transfer contact 1 that indicating member comprises relay J 5, Light-Emitting Diode D8, D9, capacitor C 9, resistance R 13, R12; The common of the transfer contact 1 of described relay J 5 is connected with the output of described electrical storage device as the described input that discharges and recharges indicating member, the normally opened contact of the transfer contact 1 of described relay J 5 is connected with an end of described resistance R 12, and the other end of described resistance R 12 is connected with the positive pole of described Light-Emitting Diode D8; The normally-closed contact of one end of described capacitor C 9 and the transfer contact 1 of an end of described resistance R 13, described relay J 5 is connected the back and is connected with the input of electrical storage device discharge control module as the described output that discharges and recharges indicating member jointly, the other end ground connection of described capacitor C 9, the other end of described resistance R 13 is connected with the positive pole of described Light-Emitting Diode D9, and the negative pole of described Light-Emitting Diode D8, D9 connects the back common ground.
Described electrical storage device discharge control module also comprises and is used to indicate the under-voltage indicating member whether described electrical storage device is in under-voltage condition, described under-voltage indicating member comprises resistance R 14, light-emitting diode D10, described resistance R 14 1 ends are connected with the normally opened contact of described magnetic latching relay J2 transfer contact 1, the positive pole of the described Light-Emitting Diode D10 of another termination of described resistance R 14, the minus earth of described light-emitting diode D10.
Described electrical storage device charge control module also comprises for the direct current to DC power supplier output carries out exporting to described direct-flow voltage regulation unit after the secondary rectification, and judges the rectification unit of the both positive and negative polarity of described DC power supplier output DC; 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 simultaneously 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 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, and is common 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 that the output of described direct-flow voltage regulation unit is connected with second input of described voltage detecting control 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 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 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 S of described field effect transistor, described NE556 chip, second output of transformer T2 link together, and the negative pole of output end as described voltage detecting control unit is connected with the input cathode of described electrical storage device jointly.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) a kind of back-up source charge-discharge control circuit of the present invention, comprise DC power supplier, electrical storage device, the power supply modular converter, electrical storage device charge control module and electrical storage device discharge control module, when described DC power supplier provides DC power supply to subscriber terminal equipment, the electrical storage device charge control module detects the voltage of electrical storage device, if the voltage of electrical storage device is greater than or equal to preset upper limit voltage lower threshold value, electrical storage device charge control module control electrical storage device stops charging, if the voltage of electrical storage device is less than preset upper limit voltage upper threshold value, the electrical storage device charge control module is to the electrical storage device output DC; When described DC power supplier does not externally provide DC power supply; described power supply modular converter is controlled described electrical storage device and is powered to subscriber terminal equipment; electrical storage device discharge control module detects the voltage of electrical storage device; if the voltage of described electrical storage device is greater than described default lower voltage limit; described electrical storage device discharge control module is controlled the external output DC of output of described electrical storage device; if the voltage of described electrical storage device is less than or equal to default lower voltage limit; described electrical storage device discharge control module is controlled described electrical storage device and is stopped to the subscriber terminal equipment power supply, makes subscriber terminal equipment keep operate as normal and protects the unlikely damage of its software and hardware.Circuit structure of the present invention 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 charge-discharge control circuit with reliability of a kind of stability.Above-mentioned back-up source charge-discharge control circuit has effectively been avoided back-up source charge-discharge control circuit complexity in the prior art, and unreasonable structure causes stability and the not high problem of reliability of circuit.
(2) back-up source charge-discharge control circuit of the present invention, the core that described electrical storage device discharges and recharges control module is 556 timing circuits, described 556 timing circuits comprise two 555 timers, first 555 timer and peripheral electron element constitute a comparator, resistance R 8, R9 is transferred to detected signal described comparator respectively and judges whether to stop charging, while output voltage and charge initiation voltage, by changing 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 the prior art scheme, 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.
(3) back-up source charge-discharge control circuit of the present invention, when described electrical storage device externally provides DC power supply, described electrical storage device discharge control module is controlled described electrical storage device and is externally provided galvanic and simultaneously the voltage of described electrical storage device is detected, if the voltage of described electrical storage device is less than or equal to default lower voltage limit, described electrical storage device discharge control module is controlled external output DC source of described electrical storage device, the protection unlikely over-discharge can of electrical storage device and can influence useful life of electrical storage device; Can limit the electric current of described under-voltage detection control unit simultaneously by the resistance R 16 of changing debugging unit, the default lower voltage limit of described electrical storage device is set, the technical program is simple, and is flexible.
(4) back-up source charge-discharge control circuit of the present invention; described reserve power supply circuits also comprise energy-conservation driver module; described energy-conservation driver module comprises for first driver element that drives described power supply modular converter and is used for driving second driver element of described under-voltage protection unit electrical storage device discharge control module; described driver module is by comprising that polar capacitor and resistance forms; 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 invention is easier clearly to be understood in order to make, and below in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein,
Fig. 1 is the structured flowchart of back-up source charge-discharge control circuit of the present invention;
Fig. 2 is the johning knot composition of embodiment 1 described back-up source charge-discharge control circuit;
Fig. 3 is the johning knot composition of embodiment 2 described back-up source charge-discharge control circuits;
Fig. 4 is the johning knot composition of embodiment 3 described back-up source charge-discharge control circuits;
Fig. 5 is the johning knot composition of embodiment 4 described back-up source charge-discharge control circuits;
Fig. 6 is the johning knot composition of embodiment 5 described back-up source charge-discharge control circuits;
Fig. 7 is the back-up source charge control module circuit connection structure figure of embodiment 1 described back-up source charge-discharge control circuit.
Reference numeral: 1-DC power supplier, 2-electrical storage device, the 3-modular converter of powering, 4-electrical storage device charge control module, 5-electrical storage device discharge control module, 61-first driver element, 62-second driver element, the 7-debugging unit, 8-discharges and recharges indicating member, the under-voltage indicating member of 9-, 101-direct-flow voltage regulation unit, 102-voltage detecting control unit, the 103-rectification unit.
Embodiment
Embodiment 1:
Present embodiment provides a kind of back-up source charge-discharge control circuit, its structured flowchart as shown in Figure 1, it comprises DC power supplier 1, electrical storage device 2, power supply modular converter 3, electrical storage device charge control module 4 and electrical storage device discharge control module 5.
Described DC power supplier 1 comprises an output, and described DC power supplier 1 is used for externally providing direct current.
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 is used for externally providing direct current.
As Fig. 2, described electrical storage device 2 comprises storage power, fuse F2, magnetic latching relay J2 transfer contact 1, relay J 4 transfer contacts 1; The output head anode of described storage power is connected with the end of described fuse F2, the other end of described fuse F2 is connected with the common of the transfer contact 1 of magnetic latching relay J2, it is common as the external output DC of the output of described electrical storage device that the common of the normally-closed contact of the transfer contact 1 of described magnetic latching relay J2,4 transfer contacts 1 of described relay J connects the back, and the normally-closed contact of described relay J 4 transfer contacts 1 is connected with the normally-closed contact of described relay J 5 transfer contacts 2; The normally opened contact of the transfer contact 1 of described magnetic latching relay J2, the negative pole of output end of described storage power connect the back common ground; The normally opened contact of described relay J 4 transfer contacts 1 is connected with the output of described electrical storage device charge control module 4 as the input of described electrical storage device 2.
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 etc.
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 direct current 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 conversion of powering of the described DC power supplier 1 of control and described electrical storage device 2, when described DC power supplier 1 externally provides direct current, described power supply modular converter 3 offers subscriber terminal equipment with the direct current of described DC power supplier 1, when described DC power supplier 1 did not externally provide direct current, described power supply modular converter 3 offered subscriber terminal equipment with the direct current of described electrical storage device 2.
In the present embodiment, as shown in Figure 2, described power supply modular converter 3 comprises diode D7, light-emitting diode D8, resistance R 11, relay J 3, J4, J5, relay J 4 transfer contacts 2, relay J 5 transfer contacts 2; The positive pole of diode D7, the negative pole of light-emitting diode D8, relay J 3, J4, J5 coil one end connects the back and connects described DC power supplier 1 negative pole of output end as the first input end negative pole of described power supply modular converter 3 jointly, the positive pole of described light-emitting diode D8 is connected with an end of resistance R 11, resistance R 11 other ends, the negative pole of diode D7, relay J 3, J4, the other end of J5 coil, the normally opened contact of described relay J 5 transfer contacts 2 connects described DC power supplier 1 output head anode as the first input end positive pole of described power supply modular converter 3, and the normally opened contact of described relay J 4 transfer contacts 2 connects described DC power supplier 1 negative pole of output end as the first input end negative pole of described power supply modular converter 3; The normally-closed contact of described relay J 5 transfer contacts 2 is as the output head anode of the described electrical storage device 2 of the second input termination of described power supply modular converter 3, the normally-closed contact of described relay J 4 transfer contacts 2 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, and the common of the common of relay J 5 transfer contacts 2 and relay J 4 transfer contacts 2 is jointly as the described subscriber terminal equipment of output termination of described power supply modular converter 3.
Electrical storage device charge control module 4 comprises an input and an output, and the input of described electrical storage device charge control module 4 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; The output of described electrical storage device charge control module 4 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 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, if the voltage of described electrical storage device 2 is less than preset upper limit voltage lower threshold value, the output of described electrical storage device charge control module 4 is to the input output DC of described electrical storage device 2, if the voltage of described electrical storage device 2 is greater than or equal to described preset upper limit voltage upper threshold value, the output of described electrical storage device charge control module 4 stops the input output DC to 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, comprise an input and an output, the input of described direct-flow voltage regulation unit 101 is connected with the output of described DC power supplier, described direct-flow voltage regulation unit 101 is used for keeping the described galvanic voltage constant of DC power supplier output, and provides direct current to voltage detecting control unit 102
In the present embodiment, as shown in Figure 7, 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, as input and the output of described DC power supplier 1 and the first input end of described voltage detecting control unit 102 of described direct-flow voltage regulation unit 101; The other end of described capacitor C 4, the negative pole of described polar capacitor C1, the GND pin of described voltage stabilizing chip 7809, one end common ground of the negative pole of described polar capacitor C2 and described capacitor C 3, the other end of described capacitor C 3, the Vout pin of the positive pole of described polar capacitor C2 and described voltage stabilizing chip 7809 links together jointly, 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, the direct current of described voltage stabilizing chip 7809 output 9V is the NE556 chip power supply of described voltage detecting control unit 103, capacitor C 1, C2, C3, C4 forms filter circuit, the shielding interference from outside signals.
As shown in Figure 7, described voltage detecting control unit 102, 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 direct-flow voltage regulation unit 101 of reception is exported, the first input end of described voltage detecting control unit 102 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 102 is connected with the output of described direct-flow voltage regulation unit 101, be used for the 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; Described voltage detecting control unit 102 is for detection of the voltage of electrical storage device 2 and control the charging of described electrical storage device 2, when the voltage of described electrical storage device 2 is lower than preset upper limit voltage lower threshold value, 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 output, when the voltage of described electrical storage device 2 is higher than or equals preset upper limit voltage upper threshold value, 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.
In the present embodiment, as shown in Figure 7, described 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 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, and the negative pole of output end as described voltage detecting control unit 102 is connected with the input cathode of described electrical storage device 2 jointly.
As shown in Figure 7, 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 divider resistance R8, 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 direct current by diode D5 and charge to storage power.
Described comparator operation principle: when described resistance R 9 detects described lithium battery and forces down in preset upper limit voltage lower threshold value, 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 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 2/3Voc, 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, T2 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 change described resistance R 8, the R9 resistance is regulated preset upper limit voltage upper threshold value and preset upper limit voltage lower threshold value 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.Relatively for the prior art scheme, 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.
In the present embodiment, described electrical storage device discharge control module 5 comprises under-voltage detection control unit and under-voltage protection unit.
Described under-voltage detection control unit comprises an input and an output, and the input of described under-voltage detection control unit is as the output of the described electrical storage device 2 of input termination of described electrical storage device discharge control module 5; Described under-voltage detection control unit is for detection of the voltage of described electrical storage device 2; when the voltage of described electrical storage device 2 is less than or equal to described default lower voltage limit; described under-voltage detection control unit is to described under-voltage protection unit output action signal; when the voltage of described electrical storage device 2 during greater than described default lower voltage limit, described under-voltage detection control unit is to the described under-voltage protection unit output signal of being failure to actuate.
Described under-voltage protection unit comprises an input, and the output of the described under-voltage detection control unit of input termination of described under-voltage protection unit is for the output signal that receives described under-voltage detection control unit; When described under-voltage protection unit receives the actuating signal of described under-voltage detection control unit output; thereby the action of described under-voltage protection unit is controlled described electrical storage device 2 and is stopped externally to provide direct current; when described under-voltage protection unit receives being failure to actuate during signal of described under-voltage detection control unit output; be failure to actuate in described under-voltage protection unit, described electrical storage device 2 continues externally to provide direct current.
As Fig. 2, described under-voltage detection control unit comprises resistance R 20, R18, R21, R19, capacitor C 11, C12, polar capacitor C13, C14, diode D11, D12, D14, triode Q2, relay J 1, controllable silicon DR1; Described under-voltage protection unit comprises magnetic latching relay J2, relay J 1 transfer contact 1,2, relay J 3 transfer contacts 1,2; The normally opened contact of the positive pole of one end of described resistance R 18, an end of described capacitor C 11, described diode D14, an end of described resistance R 20, an end of described relay J 1 coil, 1 transfer contact 1 of described relay J connects the back and is connected with the output of described electrical storage device 2 as the input of electrical storage device discharge control module 5 jointly; One end of the negative pole of described diode D14, described resistance R 19, an end of described capacitor C 12 connect the back and are connected with the base stage of described triode Q2 jointly, and the emitter of the other end of the other end of described resistance R 18, described capacitor C 11, the other end of described resistance R 19, the other end of described capacitor C 12, described triode Q2 connects the back common ground; The control utmost point of one end of the collector electrode of described triode Q2, described resistance R 21, the positive pole of described polar capacitor C13, described controllable silicon DR1 connects the back and is connected with the other end of described resistance R 20 jointly, and the negative pole of the other end of described resistance R 21 and the negative pole of described polar capacitor C13, described controllable silicon DR1 is connected the back common ground; The other end of described relay J 1 coil is connected with the positive pole of described diode D11 and the positive pole of described diode D12 simultaneously, the negative pole of described diode D11 is connected with the positive pole of described controllable silicon DR1, the negative pole of described diode D12 is connected with the positive pole of described polar capacitor C14, and the negative pole of described polar capacitor C14 is connected the back common ground with the normally opened contact of described relay J 1 transfer contact 2; The common of described relay J 1 transfer contact 2 connects the normally-closed contact of described relay J 3 transfer contacts 2, the common of described relay J 3 transfer contacts 2 connects the end of described magnetic latching relay J2, the common of described relay J 3 transfer contacts 1 of another termination of described magnetic latching relay J2, the normally opened contact ground connection of described relay J 3 transfer contacts 1, the normally-closed contact of described relay J 3 transfer contacts 1 connects the common of described relay J 1 transfer contact 1.
The described a kind of back-up source charge-discharge control circuit that provides of present embodiment, when described DC power supplier 1 output DC, the relay J 3 of described power supply modular converter 3, J4, the coil of J5 is charged, described relay J 3, J4, the normally opened contact closure of J5, powered to subscriber terminal equipment by described DC power supplier 1, the voltage of the described detection electrical storage device 2 of voltage detection unit of described electrical storage device charge control module 4 of while, if the voltage of described electrical storage device 2 is greater than or equal to preset upper limit voltage upper threshold value, described electrical storage device 2 charge control module control electrical storage device 2 stops charging, if the voltage of described electrical storage device 2 is less than preset upper limit voltage lower threshold value, described electrical storage device charge control module 4 makes described electrical storage device 2 be in charged state to described electrical storage device 2 output DCs; When described DC power supplier 1 does not externally provide direct current, the relay J 3 of described power supply modular converter 3, J4, the coil losing electricity of J5, described relay J 3, J4, the normally-closed contact closure of J5, the described electrical storage device 2 of described power supply modular converter 3 controls is powered to subscriber terminal equipment, described electrical storage device discharge control module 5 detects the voltage of electrical storage device 2, if the voltage of described electrical storage device 2 is greater than described default lower voltage limit, the external output DC of output of the described electrical storage device 2 of simultaneously described electrical storage device discharge control module 5 controls, if the voltage of described electrical storage device 2 is less than or equal to default lower voltage limit, described triode Q1 ends, the control utmost point of described controllable silicon DR1 has electric current to pass through, described controllable silicon DR1 conducting, 1 moment of described relay J is charged, described magnetic latching relay J2 has reverse current to flow through under the effect of described relay J 1, transfer contact 1 upset of described relay J 2, switch to normally opened contact by normally-closed contact, the described electrical storage device 2 of described electrical storage device discharge control module 5 controls stops to power to subscriber terminal equipment; When described DC power supplier 1 output DC, the described DC power supplier 1 of described power supply modular converter 3 controls is powered to subscriber terminal equipment.
Embodiment 2:
On the basis of embodiment 1, the described electrical storage device discharge control module 5 of described back-up source charge-discharge control circuit also comprises for the debugging unit 7 of debugging by described under-voltage detection control unit electric current, as shown in Figure 3, described debugging unit 7 comprises resistance R 16, R17; One end of described resistance R 16 is connected with the normally opened contact of described relay J 1 transfer contact 1 as the input of described debugging unit 7, the other end of described resistance R 16 is connected with an end of described resistance R 17, and described resistance R 17 other ends are connected with the positive pole of described diode D14 as the output of described debugging unit 7.Limit size by triode Q2 base current by changing resistance R 16, the default lower voltage limit of described electrical storage device 2 is set, this method simple and flexible is skillfully constructed, and can different default lower voltage limits can be set according to different electrical storage devices by changing described resistance R 16.
Back-up source charge-discharge control circuit of the present invention, when described electrical storage device 2 externally provides DC power supply, electrical storage device discharge control module 5 detects the voltage of electrical storage device 2 and controls electrical storage device 2 whether be in discharge condition, if the voltage of described electrical storage device 2 is less than or equal to default lower voltage limit, the not external output DC source of the described electrical storage device 2 of described electrical storage device discharge control module 5 controls, thus protection electrical storage device 2 unlikely over-discharge can influence the useful life of electrical storage device 2; Can limit the electric current of described under-voltage detection control unit simultaneously by the resistance R 16 of changing debugging unit 7, the default lower voltage limit of described electrical storage device 2 is set, the technical program is simple, and is flexible.
Embodiment 3:
On the basis of above-described embodiment, described back-up source charge-discharge control circuit also comprises driver module, described driver module comprises for first driver element 61 that drives described power supply modular converter 3 and is used for driving second driver element 62 of described electrical storage device discharge control module 5, as shown in Figure 4, described first driver element 61 comprises resistance R 10 and polar capacitor C10, and described second driver element 62 comprises polar capacitor C8 and resistance R 15; One end of described resistance R 10, the positive pole of described polar capacitor C10 connect the back connects described DC power supplier 1 jointly as the input anode of described first driver element 61 output head anode, are used for receiving the DC power supply that described DC power supplier provides; The negative pole of the other end of described resistance R 10, described polar capacitor C10 connects the back meets described relay J 3, J4, J5 jointly as the negative pole of output end of the described DC power supplier of output termination of described first driver element 61 a end, the negative pole of output end of the described DC power supplier of another termination of described relay J 3, J4, J5; One end of resistance R 15, the negative pole of polar capacitor C8 connect the back jointly as the normally opened contact of described relay J 3 transfer contacts 2 of the output termination of described second driver element 62, and the positive pole of the other end of resistance R 15, described polar capacitor C8 connects the back jointly as the output of the described electrical storage device charge control module 4 of input termination of described second driver element 62.Inverse electromotive force when described first driver element 61 utilizes described polar capacitor C10 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; Inverse electromotive force when described first driver element 62 utilizes described polar capacitor C10 to discharge strengthens the energy-conservation drive current of relay coil, accelerates the responsiveness of transfer contact.When reducing power consumption, improved the reliability of circuit.
Embodiment 4:
On the basis of above-described embodiment, described back-up source charge-discharge control circuit comprises that also whether be used to indicate described electrical storage device 2 is in that the indicating member that discharges and recharges of charging and discharging state discharges and recharges indicating member 8, as shown in Figure 5, the described indicating member that discharges and recharges discharges and recharges the transfer contact 1 that indicating member 8 comprises relay J 5, Light-Emitting Diode D8, D9, capacitor C 9, resistance R 13, R12; The common of the transfer contact 1 of described relay J 5 discharges and recharges the input that indicating member discharges and recharges indicating member 8 and is connected with the output of described electrical storage device 2 as described, the normally opened contact of the transfer contact 1 of described relay J 5 is connected with an end of described resistance R 12, and the other end of described resistance R 12 is connected with the positive pole of described Light-Emitting Diode D8; The normally-closed contact of one end of described capacitor C 9 and the transfer contact 1 of an end of described resistance R 13, described relay J 5 is connected the back and jointly is connected as described the discharge input of control module 5 of output that indicating member discharges and recharges indicating member 8 and electrical storage device that discharges and recharges, the other end ground connection of described capacitor C 9, the other end of described resistance R 13 is connected with the positive pole of described Light-Emitting Diode D9, and the negative pole of described Light-Emitting Diode D8, D9 connects the back common ground.When described light-emitting diode D8 is bright, represent that described electrical storage device 2 is in charged state; When described light-emitting diode D8 does not work, represent that described electrical storage device 2 is in and stop charged state; When described Light-Emitting Diode D9 is bright, represent that described electrical storage device 2 is in discharge condition; When described Light-Emitting Diode D9 does not work, represent that described electrical storage device 2 does not externally provide direct current.
Embodiment 5:
On the basis of above-described embodiment, described electrical storage device discharge control module 5 also comprises and is used to indicate the under-voltage indicating member 9 whether described electrical storage device 2 is in under-voltage condition, as shown in Figure 6, described under-voltage indicating member 9 comprises resistance R 14, light-emitting diode D10, described resistance R 14 1 ends are connected with the normally opened contact of described magnetic latching relay J2 transfer contact 1, the positive pole of the described Light-Emitting Diode D10 of another termination of described resistance R 14, the minus earth of described light-emitting diode D10.When the voltage of described electrical storage device 2 is lower than default lower voltage limit, the normally opened contact closure of described magnetic latching relay J2 transfer contact, described light-emitting diode D10 is bright, represents that described electrical storage device 2 is in under-voltage condition.
Embodiment 6:
On the basis of above-described embodiment, described electrical storage device charge control module 4 also comprises for the direct current to DC power supplier output carries out exporting to described direct-flow voltage regulation unit 101 after the secondary rectification, and judges the rectification unit 103 of the both positive and negative polarity of described DC power supplier output DC.
As Fig. 7, 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 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 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 is as the input of the described direct-flow voltage regulation unit 101 of output termination 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.
A kind of back-up source charge-discharge control circuit of the present invention, comprise DC power supplier 1, electrical storage device 2, power supply modular converter 3, electrical storage device 2 charge control module and electrical storage device discharge control module 5, when 1 pair of subscriber terminal equipment of described DC power supplier provides DC power supply, electrical storage device charge control module 4 detects the voltage of electrical storage device 2, if the voltage of electrical storage device 2 is greater than or equal to preset upper limit voltage upper threshold value, electrical storage device 2 charge control module control electrical storage device 2 stops charging, if the voltage of electrical storage device 2 is less than preset upper limit voltage lower threshold value, electrical storage device charge control module 4 is to electrical storage device 2 output DCs; When described DC power supplier 1 does not externally provide DC power supply; the described electrical storage device 2 of described power supply modular converter 3 controls is powered to subscriber terminal equipment; electrical storage device discharge control module 5 detects the voltage of electrical storage device 2; if the voltage of described electrical storage device 2 is greater than described default lower voltage limit; the external output DC of output of the described electrical storage device 2 of described electrical storage device discharge control module 5 controls; if the voltage of described electrical storage device 2 is less than or equal to default lower voltage limit; the described electrical storage device 2 of described electrical storage device discharge control module 5 controls stops to the subscriber terminal equipment power supply, makes subscriber terminal equipment keep operate as normal and protects the unlikely damage of its software and hardware.Circuit structure of the present invention 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 charge-discharge control circuit with reliability of a kind of stability.Above-mentioned back-up source charge-discharge control circuit has effectively been avoided back-up source charge-discharge control circuit complexity in the prior art, and unreasonable structure causes stability and the not high problem of reliability of circuit.
The described energy-conservation driver module of back-up source charge-discharge control circuit of the present invention 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.
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 (12)
1. a back-up source charge-discharge control circuit is characterized in that, comprising:
DC power supplier comprises an output, and described DC power supplier is used for externally providing direct current;
Electrical storage device comprises an input and an output, and described electrical storage device is used for externally providing direct current;
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 direct current 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 conversion of powering of the described DC power supplier of control and described electrical storage device, when described DC power supplier externally provides direct current, described power supply modular converter offers subscriber terminal equipment with the direct current of described DC power supplier, when described DC power supplier did not externally provide direct current, described power supply modular converter offered subscriber terminal equipment with the direct current of described electrical storage device;
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 direct current 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 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 preset upper limit voltage lower threshold value, the output of described electrical storage device charge control module is to the input output DC of described electrical storage device, if the voltage of described electrical storage device is greater than or equal to described preset upper limit voltage upper threshold value, the output of described electrical storage device charge control module stops the input output DC to described electrical storage device;
Electrical storage device discharge control module comprises an input, and the input of described electrical storage device discharge control module is connected with the output of described electrical storage device; When described electrical storage device externally provides direct current, described electrical storage device discharge control module detects the voltage of described electrical storage device, if the voltage of described electrical storage device is less than or equal to default lower voltage limit, described electrical storage device discharge control module is controlled the not external output DC of output of described electrical storage device, if the voltage of described electrical storage device is greater than described default lower voltage limit, described electrical storage device discharge control module is controlled the external output DC of output of described electrical storage device.
2. back-up source charge-discharge control circuit according to claim 1 is characterized in that: described electrical storage device discharge control module comprises under-voltage detection control unit and under-voltage protection unit, wherein,
Described under-voltage detection control unit comprises an input and an output, and the input of described under-voltage detection control unit is as the output of the described electrical storage device of input termination of described electrical storage device discharge control module; Described under-voltage detection control unit is for detection of the voltage of described electrical storage device, when the voltage of described electrical storage device is less than or equal to described default lower voltage limit, described under-voltage detection control unit is to described under-voltage protection unit output action signal, when the voltage of described electrical storage device during greater than described default lower voltage limit, described under-voltage detection control unit is to the described under-voltage protection unit output signal of being failure to actuate;
Described under-voltage protection unit comprises an input, and the output of the described under-voltage detection control unit of input termination of described under-voltage protection unit is for the output signal that receives described under-voltage detection control unit; When described under-voltage protection unit receives the actuating signal of described under-voltage detection control unit output; thereby the action of described under-voltage protection unit is controlled described electrical storage device and is stopped externally to provide direct current; when described under-voltage protection unit receives being failure to actuate during signal of described under-voltage detection control unit output; be failure to actuate in described under-voltage protection unit, described electrical storage device continues externally to provide direct current.
3. back-up source charge-discharge control circuit according to claim 1 and 2, 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, comprise an input and an output, 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 DC power supplier output, and provides direct current to the voltage detecting control unit;
Described voltage detecting control unit, 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 direct-flow voltage regulation unit is exported, 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 electrical storage device and control the charging of described electrical storage device, when the voltage of described electrical storage device is lower than preset upper limit voltage lower threshold value, 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 higher than or equals preset upper limit voltage upper threshold value, described voltage detecting control unit sends and stops filling signal, controls described DC power supplier and stops to described electrical storage device charging.
4. according to the arbitrary described back-up source charge-discharge control circuit of claim 1-3, it is characterized in that:
Described power supply modular converter comprises diode D7, light-emitting diode D8, resistance R 11, relay J 3, J4, J5, relay J 4 transfer contacts 2, relay J 5 transfer contacts 2;
The positive pole of diode D7, the negative pole of light-emitting diode D8, relay J 3, J4, J5 coil one end, the normally opened contact of described relay J 4 transfer contacts 2 connects the back and connects described DC power supplier negative pole of output end as the first input end negative pole of described power supply modular converter jointly, the positive pole of described light-emitting diode D8 is connected with an end of resistance R 11, resistance R 11 other ends, the negative pole of diode D7, relay J 3, J4, the other end of J5 coil, the normally opened contact of described relay J 5 transfer contacts 2 connects described DC power supplier output head anode as the first input end positive pole of described power supply modular converter; The normally-closed contact of described relay J 5 transfer contacts 2 connects the output head anode of described electrical storage device as second input anode of described power supply modular converter, the normally-closed contact of described relay J 4 transfer contacts 2 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 common of relay J 5 transfer contacts 2 and relay J 4 transfer contacts 2 is connected the common described subscriber terminal equipment of output termination as described power supply modular converter in back.
5. according to the arbitrary described back-up source charge-discharge control circuit of claim 2-4, it is characterized in that:
Described under-voltage detection control unit comprises resistance R 20, R18, R21, R19, capacitor C 11, C12, polar capacitor C13, C14, diode D11, D12, D14, triode Q2, relay J 1, controllable silicon DR1; Described under-voltage protection unit comprises magnetic latching relay J2, relay J 1 transfer contact 1,2, relay J 3 transfer contacts 1,2;
The normally opened contact of the positive pole of one end of described resistance R 18, an end of described capacitor C 11, described diode D14, an end of described resistance R 20, an end of described relay J 1 coil, 1 transfer contact 1 of described relay J connects the back and is connected with the output of described electrical storage device as the input of electrical storage device discharge control module jointly; One end of the negative pole of described diode D14, described resistance R 19, an end of described capacitor C 12 connect the back and are connected with the base stage of described triode Q2 jointly, and the emitter of the other end of the other end of described resistance R 18, described capacitor C 11, the other end of described resistance R 19, the other end of described capacitor C 12, described triode Q2 connects the back common ground; The control utmost point of one end of the collector electrode of described triode Q2, described resistance R 21, the positive pole of described polar capacitor C13, described controllable silicon DR1 connects the back and is connected with the other end of described resistance R 20 jointly, and the negative pole of the other end of described resistance R 21 and the negative pole of described polar capacitor C13, described controllable silicon DR1 is connected the back common ground; The other end of described relay J 1 coil is connected with the positive pole of described diode D11, the positive pole of described diode D12 simultaneously, the negative pole of described diode D11 is connected with the positive pole of described controllable silicon DR1, the negative pole of described diode D12 is connected with the positive pole of described polar capacitor C14, and the negative pole of described polar capacitor C14 is connected the back common ground with the normally opened contact of described relay J 1 transfer contact 2; The common of described relay J 1 transfer contact 2 connects the normally-closed contact of described relay J 3 transfer contacts 2, the common of described relay J 3 transfer contacts 2 connects the end of described magnetic latching relay J2, the common of described relay J 3 transfer contacts 1 of another termination of described magnetic latching relay J2, the normally opened contact ground connection of described relay J 3 transfer contacts 1, the normally-closed contact of described relay J 3 transfer contacts 1 connects the common of described relay J 1 transfer contact 1.
6. according to claim 4 or 5 described back-up source charge-discharge control circuits, it is characterized in that: described electrical storage device comprises storage power, fuse F2, magnetic latching relay J2 transfer contact 1, relay J 4 transfer contacts 1; The output head anode of described storage power is connected with the end of described fuse F2, the other end of described fuse F2 is connected with the common of the transfer contact 1 of magnetic latching relay J2, it is common as the external output DC of the output of described electrical storage device that the common of the normally-closed contact of the transfer contact 1 of described magnetic latching relay J2,4 transfer contacts 1 of described relay J connects the back, and the normally-closed contact of described relay J 4 transfer contacts 1 is connected with the normally-closed contact of described relay J 5 transfer contacts 2; The normally opened contact of the transfer contact 1 of described magnetic latching relay J2, the negative pole of output end of described storage power connect the back common ground; The normally opened contact of described relay J 4 transfer contacts 1 is connected with the output of described electrical storage device charge control module as the input of described electrical storage device.
7. according to claim 5 or 6 described back-up source charge-discharge control circuits, it is characterized in that: described electrical storage device discharge control module comprises that also described debugging unit comprises resistance R 16, R17 for the debugging unit of debugging by described under-voltage detection control unit electric current; One end of described resistance R 16 is connected with the normally opened contact of described relay J 1 transfer contact 1 as the input of described debugging unit, the other end of described resistance R 16 is connected with an end of described resistance R 17, and described resistance R 17 other ends are connected with the positive pole of described diode D14 as the output of described debugging unit.
8. according to the arbitrary described back-up source charge-discharge control circuit of claim 3-7, it is characterized in that:
Described back-up source charge-discharge control circuit also comprises driver module, described driver module comprises for first driver element that drives described power supply modular converter and is used for driving second driver element of described electrical storage device discharge control module, described first driver element comprises resistance R 10 and polar capacitor C10, and described second driver element comprises polar capacitor C8 and resistance R 15;
One end of described resistance R 10, the positive pole of described polar capacitor C10 connect the back connects described DC power supplier jointly as the input anode of described first driver element output head anode, are used for receiving the DC power supply that described DC power supplier provides; The negative pole of the other end of described resistance R 10, described polar capacitor C10 connects the back meets described relay J 3, J4, J5 jointly as the negative pole of output end of described first driver element a end, the negative pole of output end of the described DC power supplier of another termination of described relay J 3, J4, J5; One end of resistance R 15, the negative pole of polar capacitor C8 connect the back jointly as the normally opened contact of described relay J 3 transfer contacts 2 of the output termination of described second driver element, and the positive pole of the other end of resistance R 15, described polar capacitor C8 connects the back jointly as the output of the described electrical storage device charge control module of input termination of described second driver element.
9. according to the arbitrary described back-up source charge-discharge control circuit of claim 2-8, it is characterized in that:
Described back-up source charge-discharge control circuit also comprises and is used to indicate the indicating member that discharges and recharges whether described electrical storage device is in charging and discharging state, describedly discharge and recharge the transfer contact 1 that indicating member comprises relay J 5, Light-Emitting Diode D8, D9, capacitor C 9, resistance R 13, R12; The common of the transfer contact 1 of described relay J 5 is connected with the output of described electrical storage device as the described input that discharges and recharges indicating member, the normally opened contact of the transfer contact 1 of described relay J 5 is connected with an end of described resistance R 12, and the other end of described resistance R 12 is connected with the positive pole of described Light-Emitting Diode D8; The normally-closed contact of one end of described capacitor C 9 and the transfer contact 1 of an end of described resistance R 13, described relay J 5 is connected the back and is connected with the input of electrical storage device discharge control module as the described output that discharges and recharges indicating member jointly, the other end ground connection of described capacitor C 9, the other end of described resistance R 13 is connected with the positive pole of described Light-Emitting Diode D9, and the negative pole of described Light-Emitting Diode D8, D9 connects the back common ground.
10. according to the arbitrary described back-up source charge-discharge control circuit of claim 2-9, it is characterized in that:
Described electrical storage device discharge control module also comprises and is used to indicate the under-voltage indicating member whether described electrical storage device is in under-voltage condition, described under-voltage indicating member comprises resistance R 14, light-emitting diode D10, described resistance R 14 1 ends are connected with the normally opened contact of described magnetic latching relay J2 transfer contact 1, the positive pole of the described Light-Emitting Diode D10 of another termination of described resistance R 14, the minus earth of described light-emitting diode D10.
11. according to the arbitrary described back-up source charge-discharge control circuit of claim 3-10, it is characterized in that: described electrical storage device charge control module also comprises for the direct current to DC power supplier output carries out exporting to described direct-flow voltage regulation unit after the secondary rectification, and judges the rectification unit of the both positive and negative polarity of described DC power supplier output DC;
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 simultaneously 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.
12. according to the arbitrary described back-up source charge-discharge control circuit of claim 3-11, it is characterized in that:
Described direct-flow voltage regulation unit comprises voltage stabilizing chip 7809, polar capacitor C1, C2, capacitor C 3, C4; One end of the anodal and described capacitor C 4 of the Vin pin of described voltage stabilizing chip 7809, described polar capacitor C1 links together jointly, is connected with the output of described DC power supplier and the first input end of described voltage detecting control unit as the input of described direct-flow voltage regulation 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 that the output of described direct-flow voltage regulation unit is connected with second input of described voltage detecting control 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 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 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 S of described field effect transistor, described NE556 chip, second output of transformer T2 link together, and the negative pole of output end as described voltage detecting control unit is connected with the input cathode of described electrical storage device jointly.
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