CN209030069U - A kind of multiple-output electric power - Google Patents

Abstract

The utility model provides a kind of multiple-output electric power, it is arranged in the output and sequential control circuit is formed by control module, drive module, isolation module and detection module, the timesharing sequence power supply needs to realize multichannel equipment in application system are detected to product input voltage using sequential control circuit, it can also only export all the way and carry out timing control, the number of power supply output can be specifically determined according to application system demand.

Description

A kind of multiple-output electric power

Technical field

The utility model relates to field of switch power, specifically, being related to the Switching Power Supply of multiple-channel output.

Background technique

In Switching Power Supply of today production, many Switching Power Supply products realize multiple-channel output, to meet the more equipment of client Use, while cost is substantially reduced, without the one-to-one application of the corresponding equipment of a Switching Power Supply product, so multichannel The application that the Switching Power Supply product of output has become client is preferred；Currently, many equipment require a kind of timing power down or pass Disconnected situation, such as an equipment are first closed, other equipment delay a period of time turn off, with guarantee equipment normal operation or Person stores data etc.；At present the scheme of the solution of industry be using timing power supply insert row or multiple switch power supply product and Software compatibility realizes that such as Fig. 1, but this results in cost excessively high, occupied space is larger, this is not desired by manufacturer and client, Nor optimal scheme；And using single switch power supply includes the Optimum cost of multiple-channel output, and main road bypass is all to meet Safety isolation, but the power down time of the main road bypass of Switching Power Supply product is almost consistent, be just unsatisfactory for client when Sequence application.

Utility model content

In view of this, the utility model provides a kind of multiple-output electric power in view of the above problems, for control switch electricity Main road/bypass of product-derived rapidly switches off, and to solve the timing power down application demand of client's multiple equipment, while reducing cost, It occupies little space, when this circuit be can be used in the Switching Power Supply of doubleway output or more, effect is the most obvious.

The purpose of this utility model is achieved through the following technical solutions:

A kind of multiple-output electric power, the vice-side winding including at least two transformers, a vice-side winding form main output Circuit, other vice-side windings form auxiliary output circuit,

The timing control being made of control module, drive module, isolation module and detection module is added in auxiliary output circuit Circuit；Control module includes a relay with switch, and the both ends of switch seal in voltage output end and receive power supply unit with outer Between, for controlling output, i.e., switch one end connects voltage output end anode, receives power supply unit outside the switch other end；Control Module input connection drive module output end is used to receive the signal that control switch is disconnected with is closed, and drive module input terminal connects Isolation module output end is connect for receiving the signal of control drive module work；One input terminal of isolation module connects voltage output end Anode is for receiving output voltage, and another input terminal connecting detection module output end of isolation module is for receiving detection module output Detection signal, detection module input terminal connection voltage input end be used for sample detecting input voltage.

Preferably, the main output circuit is also added is made of control module, drive module, isolation module and detection module Sequential control circuit.

Preferably, the detection module includes first resistor and second resistance, and first resistor one end connects voltage input end Anode, second resistance one end connect voltage input end cathode, and the first resistor other end, which connects to export with the second resistance other end, to be made For the output end of detection module.

Preferably, the isolation module includes 3rd resistor, the 4th resistance, first capacitor and optocoupler；Two pole of optocoupler primary side Tube anode is connected as one input terminal connecting detection module output end of isolation module, optocoupler primary side diode cathode by first capacitor Ground connection, 3rd resistor both ends are connected in parallel on first capacitor both ends, and optical coupling secondary edges three-level pipe collector picks out conduct by the 4th resistance Another input terminal connection voltage output end anode of isolation module, optical coupling secondary edges transistor emitter is as isolation module output end.

Preferably, the drive module includes the 5th resistance and the second capacitor；Second capacitor one end is simultaneously as driving mould Block input terminal and output end, the second capacitor other end connect voltage input end cathode, and the 5th resistance both ends are connected in parallel on the second capacitor Both ends.

Preferably, the control module includes triode, the 6th resistance, the 6th capacitor and relay；Wherein relay packet Include coil and switch；Transistor base connects voltage input end cathode, three poles as control circuit input terminal, transistor emitter Pipe collector connects relay coil one end, and the other end of relay coil other end connection switch one end, switch receives confession outside Electric equipment, the 6th resistance both ends are connected in parallel on relay coil both ends.

Compared with prior art, the multiple-output electric power of the utility model has the following beneficial effects:

1) this programme circuit is simple, easily designed, at low cost convenient for debugging；

2) the utility model can control the delay service time of product respectively exported, and form timing power down；

3) the utility model is changed to the single multiple-channel output control of product by multiple control of product, and cost can be greatly reduced, section Save use space；

4) the utility model does not influence former secondary side, and the safety isolation between each output will not reduce the reliability of product.

Detailed description of the invention

Fig. 1 is the functional block diagram of existing multiple-channel output timing down circuit；

Fig. 2 is functional block diagram of the sequential control circuit of the utility model multiple-output electric power in application system；

Fig. 3 is the schematic diagram of the utility model multiple-output electric power first embodiment.

Specific embodiment

As shown in Fig. 2, being principle frame of the sequential control circuit of the utility model multiple-output electric power in application system Figure, sequential control circuit is arranged in a kind of multiple-output electric power in the output, using sequential control circuit to product input voltage into Row detects the timesharing sequence power supply needs to realize multichannel equipment in application system, can also only export all the way and carry out timing control System can specifically determine the number of power supply output according to application system demand.

It is described in detail below in conjunction with principle and embodiment of the attached drawing to utility model.

First embodiment

As shown in figure 3, the schematic diagram of the multiple-output electric power for the utility model first embodiment, when a kind of multiple-channel output Sequence down circuit, the vice-side winding including at least two transformers, it is (hereinafter referred to as main that a vice-side winding forms main output circuit Road), other vice-side windings form auxiliary output circuit (hereinafter referred to as bypass), can be arranged auxiliary according to multiple-channel output product demand The output timing control circuit of output circuit, sequential control circuit is by detection module 101, isolation module 102, drive module 103 It is formed with control module 104, to realize the timing control output of multichannel equipment in application system, can also there was only main output circuit Sequential control circuit or main output circuit and auxiliary output circuit sequential control circuit is set simultaneously.

Now illustrate the multiple-output electric power of the utility model, timing control by taking the sequential control circuit of auxiliary output circuit as an example The connection relationship of circuit modules circuit processed are as follows:

Detection module input terminal connection voltage input end will test to obtain voltage letter for receiving and detecting input voltage Isolation module input terminal is given in number output, and isolation module carries out insulation blocking to the detection voltage and outputs signal to drive in its output end Dynamic module input, one control signal control module input terminal one of drive module output end connection input control signal for controlling The voltage output of auxiliary output circuit.

Detection module 101: including resistance R1 and resistance R2；The one end resistance R1 connects Input voltage terminal anode, and resistance R1 is another One end connects the one end resistance R6, and the resistance R2 other end connects Input voltage terminal cathode, the resistance R9 other end and the resistance R2 other end It is connected；Resistance R1 and resistance R2 is used for sample detecting input voltage.

Isolation module 102: including resistance R3, resistance R4, capacitor C1 and optocoupler OC1, optocoupler OC1 include primary side diode and Secondary side triode, the series connection point that optocoupler OC1 primary side diode anode connects resistance R1 and resistance R2 receive after sample detecting Input voltage, optocoupler OC1 primary side diode cathode is separately connected the one end resistance R3 and the one end capacitor C1, the resistance R3 other end with Ground is accessed after the connection of the capacitor C1 other end, optocoupler OC1 pair side transistor collector connects the one end resistance R4, and the resistance R4 other end connects The voltage output end anode Vo2+ for connecing bypass receives output voltage, and optocoupler OC1 pair side triode emitter-base bandgap grading makees isolation circuit output end.

Drive module 103: including capacitor C2 and resistance R5；The one end capacitor C2 connects as driving circuit input terminal and output end Optocoupler OC1 pair side triode emitter-base bandgap grading is connect, the capacitor C2 other end connects the output negative pole Vo2- on the road Fu Shu, and resistance R5 is connected in parallel on capacitor The both ends C6.

Control module 104: including triode Q1, resistance R6 and relay, relay includes coil and switch K1, triode Q1 base stage connects the one end capacitor C2 as control circuit input terminal, and triode Q1 emitter-base bandgap grading connects the voltage output end cathode of bypass Vo2-, triode Q1 collector connection relay coil one end, the one end relay other end connection switch K1, resistance R6 are connected in parallel on The both ends of relay coil, the both ends switch K1 seal in bypass voltage output end and by bypass power supply by between power supply unit, i.e., The one end switch K1 connects bypass voltage output end anode Vo2+, receives power supply unit, relay K1 control outside the switch K1 other end Bypass output with by the input of power supply unit, i.e. coil conducting inside relay K1 generates magnetic, internal switch and is attracted (No. 1 and No. 2 ports actuations), then bypass is exported is shorted with the input for being powered equipment, bypass output foundation, in relay K1 The coil in portion disconnects, nonmagnetic, and internal switch disconnects (No. 1 and No. 2 ports disconnections), then exports and be powered the input of equipment It disconnects, bypass output disconnects.

Now illustrate the working principle of the sequential control circuit by taking the auxiliary output circuit of two-way out-put supply as an example:

When power work, the Voltage Establishment of detection module circuit, resistance R1 and resistance R2 real-time sampling detect input voltage, Optocoupler OC1 primary side LEDs ON, optocoupler OC1 pair side triode receive signal and then are connected, the negative pole of output end of bypass Vo2+ is charged by resistance R4, optocoupler OC1 pair side triode to capacitor C2 in drive module, drive module work, output driving For signal to control module, triode Q1 base stage is converted to high level, the triode Q1 conducting of control module, and control module works, I.e. relay coil is initially powered up, and the coil of relay generates magnetic, relay switch K1 closure, the i.e. output of bypass after being powered It establishes, is powered for rear class by power supply unit.When power supply power-fail does not work, detection module circuit does not work, inside isolation module Optocoupler OC1 primary side diode no current pass through, diode does not shine, optocoupler OC1 pair side triode be off state, control electricity The base stage of the triode Q1 on road is low level, triode cut-off, and then control relay coil no power, switch disconnection, bypass Output disconnects, and main road persistently exports, and ensure that controlled bypass exports preferential power down than main road.

The utility model multiple-output electric power quickly detects input voltage by the way that sequential control circuit is arranged in the output, To realize the timesharing sequence power supply needs of multichannel equipment in application system, to existing multiple control of product are improved to single more The road out-put supply control of product is realized, is significantly reduced cost, is saved use space, but also do not influence former secondary side, Safety isolation between each output, will not reduce the reliability of power supply product.

Above embodiments are two-way output products, and the above product in three tunnels also can be used, including third road and the road N timing The connection relationship of circuit, the inside of every road sequence circuit is consistent, and realization principle is also identical with above embodiments, no longer superfluous herein It states.

Above are merely preferred embodiments of the utility model, it is noted that above-mentioned preferred embodiment should not regard For the limitation of the utility model, on the basis of the utility model attached drawing, for those skilled in the art, Without departing from the spirit and scope of the utility model, alternatively improved and retouching can also be made, such as control circuit is used The circuit substitution of amplifier and triode composition, is still able to achieve identical function, these improve and retouch also in the guarantor of the utility model Range is protected, is no longer repeated here with embodiment, the protection scope of the utility model should be with claim limited range It is quasi-.

Claims (6)

1. a kind of multiple-output electric power, the vice-side winding including at least two transformers, a vice-side winding form main output electricity Road, other vice-side windings form auxiliary output circuit, it is characterised in that:

The sequential control circuit being made of control module, drive module, isolation module and detection module is added in auxiliary output circuit； Control module include one with switch relay, the both ends of switch seal in voltage output end and it is outer receive between power supply unit, It is exported for controlling, i.e. switch one end connection voltage output end anode, receives power supply unit outside the switch other end；Control module is defeated Enter the signal that end connection drive module output end is used to receive control switch disconnection and closure, the connection isolation of drive module input terminal Module output end is used to receive the signal of control drive module work；One input terminal of isolation module connects voltage output end anode and uses In receiving output voltage, another input terminal connecting detection module output end of isolation module is used to receive the detection of detection module output The input terminal connection voltage input end of signal, detection module is used for sample detecting input voltage.

2. multiple-output electric power according to claim 1, it is characterised in that: the main output circuit is also added by control mould The sequential control circuit that block, drive module, isolation module and detection module form.

3. multiple-output electric power according to claim 1 or 2, it is characterised in that: the detection module includes first resistor And second resistance, first resistor one end connection voltage input end anode, second resistance one end connection voltage input end cathode, first The resistance other end is connected output end of the output as detection module with the second resistance other end.

4. multiple-output electric power according to claim 1 or 2, it is characterised in that: the isolation module include 3rd resistor, 4th resistance, first capacitor and optocoupler；Optocoupler primary side diode anode is defeated as one input terminal connecting detection module of isolation module Outlet, optocoupler primary side diode cathode connect ground by first capacitor, and 3rd resistor both ends are connected in parallel on first capacitor both ends, optocoupler Secondary side three-level pipe collector is picked out by the 4th resistance and connects voltage output end anode, optocoupler as another input terminal of isolation module Secondary side transistor emitter is as isolation module output end.

5. multiple-output electric power according to claim 1 or 2, it is characterised in that: the drive module includes the 5th resistance With the second capacitor；Second capacitor one end is used as drive module input terminal and output end simultaneously, and the second capacitor other end connects voltage Input cathode, the 5th resistance both ends are connected in parallel on the both ends of the second capacitor.

6. multiple-output electric power according to claim 1 or 2, it is characterised in that: the control module includes triode, Six resistance, the 6th capacitor and relay；Wherein relay includes coil and switch；Transistor base is inputted as control circuit End, transistor emitter connect voltage input end cathode, and transistor collector connects relay coil one end, and relay coil is another The other end of one end connection switch one end, switch receives power supply unit outside, and the 6th resistance both ends are connected in parallel on relay coil both ends.