CN205992793U - Integrated form double earth wire type double-purpose source - Google Patents

Abstract

Integrated form double earth wire type double-purpose source，Belong to electronic technology field，By two rectification units，Lightning protection unit，Accumulator，Floating charge unit，DC conversion unit，AC voltage-stabilizing unit，Switch control unit，Equivalent load，Isolated location forms，Two rectification units are not only respectively three end floating charge units and provide electric current with AC voltage-stabilizing unit，More access lightning protection unit，Form fast tripping protection during overvoltage，When there being exchange，Switch control unit starts，Close DC conversion unit，Accumulator is not discharged，When no exchanging，Switch control unit disconnects，DC conversion unit starts，Battery discharging，For direct current supply，In measure，Use the three-terminal voltage-stabilizing technology of maturation，And increase adjustable factor，The floating charge of direct current is enable to reach standard float charge voltage，The voltage stabilizing of exchange is also more simply accurate，After enforcement，Form independent floating charge loop and discharge loop，Form duplicate supply with exchanging，Meet the particular/special requirement of medical apparatus and instruments，Thus this power supply has extensive and special purposes.

Description

Integrated form double earth wire type double-purpose source

Technical field

This practical genus electronic technology field.

Background technology

The quality of power supply, directly influences overall performance.Power source performance is good, then overall performance is good.Particularly importantly Crucial equipment is generally equipped with Accessory Battery, such as can not directly affect the life of storage battery and reliability to its scientific maintenance, will It is likely to become a kind of new trouble point, and for ordinary electrical home appliance, some important performances can be made up with the behavior of employment, thunderous Rainy day, artificially can pull out power supply, and a lot of equipment can not be made up with artificial mode, the medical device as used by hospital, The requirement to power supply for these products is just very high, overcritical degree will significantly larger than ordinary electrical home appliance, be can not by traditional design Competent.Reason is as follows：

One be power supply be often electrical equipment, the most troublesome keypoint part, all such to ordinary electrical home appliance.And to being furnished with electric power storage The product in pond is even more so, because during with accumulator, not only load power source, and increased the charging current filling accumulator again, If accumulator electricity consumption is excessive, initial charge stream is very big, thus more exacerbates the load of power supply, thus is easily damaged.

Two is the same day in thunderstorm season for the ordinary electrical home appliance, can pull out power supply prevention, needing the used time,（If desired for seeing electricity Apparent time）, because being easily alerted, can recover immediately, user is expected.And medical device class product is really highly difficult, also not Power supply may be pulled out.And present stable state is integrated in lightning protection, very weak.

The three particularity importances being because medical device change more it is therefore necessary to will adapt to electrical network in design On a large scale, key benefit reason one is when voltage ripple of power network, integrated regulator will not originally be penetrated and cause to damage.Reason two Be, when civil power is relatively low or relatively high can normal voltage stabilizing, do not result in the failure of protection function.Reason three is to make Medical treatment device Material can have bigger use space.

Four are essential to join accumulator, and the maintenance of accumulator has higher requirement, wherein charging voltage value and place value Different.If load request voltage stabilizing is pressed in voltage stabilizing, the requirement of charging can not be met, if by the voltage charging as requirement, Then load will be higher than normal required voltage for a long time.This is difficult point one.Difficult point two is if there are battery discharging system, certainty and city Electric electric power system forms OR gate power supply mode to load, therefore both and the circuit being loaded with an OR gate property.Battery discharging When most of time be 2 volts of standard value of every section, with discharging, this value also will decline, and the output voltage drop of therefore accumulator is very precious Expensive, if the pressure drop of the circuit of OR gate property is excessive.The normal standard of deviation then loading increases.What therefore made using measure Accumulator does not produce excessive pressure drop in electric discharge, becomes difficult point.Difficult point three is to be set of system when there being civil power to load, and No civil power when be that battery system is powered again, conversion between the two is to automatically switch, and therefore how just to enable conversion science Change.Difficult point four is how to form two parts and power to be independent of each other each other, is when accumulator breaks down, does not interfere with civil power Electric power system, on the contrary do not interfere with battery system during mains-supplied system failure.Difficult point five, some data proposition relays To make to switch, this scheme has multiple deficiencies, and wherein one important point deficiency is power consumption, difficult point six is, some scheme cost mistakes Height, is not suitable for the popularization of product.

Content of the invention

This practical main purpose is that the lightning protection capability for existing power supply is not strong, and overvoltage capabilities are not enough, and can not The shortcoming using accumulator well, and the New Measure proposing, in measure, have used the three-terminal voltage-stabilizing technology of maturation, and have increased Plus adjustable factor, enable the floating charge of direct current to reach standard float charge voltage, the voltage stabilizing of exchange is also more accurate, and this measure is implemented Afterwards, form the discharge loop in independent floating charge loop and accumulator, form duplicate supply with Alternating Current Power Supply, meet the spy of specific loads Different requirement, thus this power supply has extensive and special purposes.

Major measure

1st, integrated form double earth wire type double-purpose source is by two rectification units, lightning protection unit, accumulator, floating charge unit, direct current conversion Unit, AC voltage-stabilizing unit, switch control unit, equivalent load, isolated location forms.

Wherein：Two rectification units are bridge rectifier, and the ground wire of rectification unit one terminates in DC conversion unit On the emitter stage of switching audion.

The OR gate that lightning protection unit is made up of fast tripping protection relay, lightning protection stabilivolt, two diodes, rectification unit one defeated The line bag termination going out OR gate to the fast tripping protection relay connecing two diodes compositions with the output of rectification unit two is normally closed with two Contact, thunder stabilivolt is taken over control to ground wire in another line bag termination, two transfer contacts of fast tripping protection relay one of conversion Contact connects the input of floating charge device in floating charge unit, and another transfer contact connects the input of two three terminal regulators in AC voltage-stabilizing unit Control one end of resistance partially on audion in end and switch control unit.

AC voltage-stabilizing unit is become with voltage stabilizing diad by voltage stabilizing one unit.

Two voltage regulation units are symmetric circuit, are all made up of resistance inclined under resistance inclined in three terminal regulator, voltage stabilizing, voltage stabilizing.

The input of two three terminal regulators is all connected in another transfer contact of fast tripping protection relay, each three-terminal voltage-stabilizing The outfan of device all connects in a voltage stabilizing inclined resistance to earth terminal, and the earth terminal of each three terminal regulator connects under a voltage stabilizing partially Resistance is to ground wire

Floating charge unit is made up of resistance inclined under resistance inclined in floating charge, floating charge device, floating charge：The input of floating charge device is taken over pressure and is protected One transfer contact of shield relay, the output of floating charge device terminates in floating charge resistance partially to the earth terminal of floating charge device, floating charge device Under ground connection termination floating charge, resistance switches the emitter stage of audion, the output termination accumulator of floating charge device in automatic switch unit partially Positive pole.

Switch control unit by control inclined resistance on audion, control audion, control transistor collector resistance form.

DC conversion unit is by switching audion, switch unit diode one, switch unit diode two form.

The end controlling resistance partially on audion is connected in another transfer contact of fast tripping protection relay, controls audion Another termination of upper inclined resistance controls the base stage of audion, controls the grounded emitter line of audion, controls the current collection of audion Extremely two-way, a road connects the positive pole controlling transistor collector resistance to accumulator, and another road connects the base stage of switching audion, etc. The output of one termination Alternating Current Power Supply of effect load, another termination switches the colelctor electrode of audion, and switch unit diode one is connected on Between the switching colelctor electrode of audion and ground wire, switch unit diode two be connected on switching audion emitter stage and ground wire it Between.

Isolated location is made up of three isolating diodes：The positive pole of accumulator is connect respectively with the outfan of two three terminal regulators The positive pole of one isolating diode, the negative pole of isolating diode is connected, and is the output in integrated form double earth wire type double-purpose source.

2nd, floating charge device and two three terminal regulators adopt the integrated regulator of 78 series.

3rd, isolating diode is face fit type diode.

It is further described below：

First, this practical AC voltage-stabilizing unit is reliable and voltage stabilizing is accurate.

Three-terminal voltage-stabilizing technology is ripe voltage stabilizing technique, and it has an a series of advantage, and this practical in AC voltage-stabilizing While unit exactly remains the series of advantages of three-terminal voltage-stabilizing technology, increased the adjustability of voltage, practical due to this In AC voltage-stabilizing unit, be the main time to loaded work piece, be normal time mainly by unit successor, so employing Two three-terminal voltage-stabilizing shared power, load capacity is strong, is in the state that " big horse " draws " dolly ".Thus it is steady to improve exchange The reliable life of pressure unit, and each three terminal regulator is connected under voltage stabilizing inclined resistance and resistance inclined in voltage stabilizing, for defeated Go out the adjustment of voltage, therefore have very strong voltage stabilizing accuracy.

2nd, this practical explanation having very strong overvoltage protection ability.

There is good anti-overvoltage protection explanation：There is multi-stage protection unit, when rectification output end is to being connected with high voltage transient, speed The stabilivolt that disconnected protective relay is connected suctions through, and its corresponding normally-closed contact disconnects, and rear class is formed with protection quick-break, therefore to thunder Hit protective effect, form the protection of the lightning protection first order.The principle that this protection is formed is that rear class is cut off, rather than short circuit, So good effect, numerous equipment of many Compact Power Plants lightning protection it is simply that adopting this fast tripping protection.

Two ends wherein one end of the line bag of fast tripping protection relay connects the output of two rectifications through the diode of OR gate, another Terminate lightning protection stabilivolt to ground wire, because the voltage stabilizing voltage of stabilivolt several volts higher than the output of rectification, therefore in normal state, Lightning protection stabilivolt will not be breakdown, and the transfer contact of fast tripping protection relay is communicated with normally-closed contact, that is to say the input of rear class All be equivalent to and be connected in rectification output, and once there being thunderbolt overvoltage, after overvoltage exceeds the pressure voltage of lightning protection stabilivolt, lightning protection Stabilivolt is breakdown, fast tripping protection relay adhesive, and its transfer contact is disconnected with normally-closed contact, the input dead electricity of rear class, thus Protect late-class circuit.

It is that the pressure of anti-thunder tube is typically all upper hectovolt with the benefit that such circuit forms switching behavior lightning protection, tens The very difficult of volt is looked for, and for such low-voltage for general 12V, 24V, 36V, the anti-thunder tube with hectovolt is clearly incorrect , and the voltage stabilizing voltage of stabilivolt selects very well, can within the scope of very low, and the reason using relay be, relay Device response is rapid, can quickly thunderbolt be responded, so selecting fast tripping protection relay and lightning protection stabilivolt to collectively constitute Switch lightning protection forms protection to circuit.

The explanation of the 3rd, independent charge circuit feature.

Not being in high-grade equipment, typically supporting floating charge loop and load circuit do not have completely separable, so causing A lot of disadvantages.Now taking load and need 12 volts as a example, if the accumulator of 12 volts of adapted.Then during accumulator floating charge, need 13.8 About volt, if not designing separate circuit, when civil power has electricity, power output end is 13.8 volts about for a long time, and this is to only Need 12 volts of load unfavorable.If power end output adjustment is 12 volts, though load request can be met, but float departing from accumulator Fill required 13.8 volts.Devise accumulator floating charge and discharge cell for this system.Its floating charge principle is, when civil power has electricity, Rectification unit one（1 in Fig. 1）Middle bridge rectifier output has electricity, the floating charge level pressure unit in direct current supply partly, then passes through Accumulator returns to the ground terminal of bridge rectifier in a unit, is also the negative terminal of accumulator, thus forms floating charge loop, according to kirschner Law, and the experiment of circuit, this floating charge loop is self-existent, mutual not to the current supply circuit of load with AC voltage-stabilizing unit Interference, AC voltage-stabilizing unit to load current supply circuit be rectification unit two output current, through AC voltage-stabilizing unit arrive bear Carry, be then return to ground wire, that is to say the negative terminal of rectification unit two.

With when simultaneously, have inclined resistance in floating charge（2.2 in Fig. 1）With resistance inclined under floating charge（2.3 in Fig. 1）Floating charge can be carried out The adjustment of voltage, so standard value can be transferred to by float charge voltage.

4th, civil power and accumulator duplicate supply explanation.

When mains sometimes, in rectification unit two, bridge rectifier has output, after AC voltage-stabilizing unit, load supply Electricity, electric current is through switch unit diode one（11.2 in Fig. 1）To ground wire, it is the negative pole of bridge rectifier in rectification unit two. Because now switching audion（11.1 in Fig. 1）Become off state.

When mains no when, in rectification unit two, bridge rectifier no exports, and AC voltage-stabilizing unit no exports, but now stores Battery powers to the load, electric current audion after overload, in switch unit（11.1 in Fig. 1）To rectification unit one jackshaft Formula rectification negative terminal, is the negative terminal of accumulator, completes to power.

5th, the principle explanation of switch unit.

When mains sometimes, in rectification unit two, bridge rectifier has output, controls audion（6.2 in Fig. 1）Control three Inclined resistance in pole pipe（6.1 in Fig. 1）There is electricity, produce base flow, so controlling audion（6.2 in Fig. 1）Colelctor electrode has electric current, its collection Electrode is saturation, and its base loop is, rectification unit two（4 in Fig. 1）Middle bridge-type rectifier tube positive terminal, through controlling three poles To ground, collector current loop is pipe base stage, alternating current unit outfan enter through collector resistance and control audion（Figure 6.2 in 1）Colelctor electrode then arrive ground.So switching audion（11.1 in Fig. 1,）For ending off-state.

When mains no when, in rectification unit two, bridge rectifier has output, controls audion（6.2 in Fig. 1）Control three Inclined resistance in pole pipe（6.1 in Fig. 1）No electricity, does not produce base flow, so controlling audion（6.2 in Fig. 1）Colelctor electrode no current, its Current collection extremely cut-off state, so switching audion（11.1 in Fig. 1）For saturation conduction state.Switching audion now（Fig. 1 In 11.1）Base loop be that the feeder ear of accumulator is through controlling transistor collector resistance（6.3 in Fig. 1）Enter switching The base stage of audion, emitter stage, then into the negative pole of bridge-type rectifier tube in rectification unit one, is the negative pole of accumulator.Negative Carry the positive pole that electric current is accumulator, enter the colelctor electrode of switching audion after overload, then arrive emitter stage, emitter stage is then Enter into the negative pole of bridge-type rectifier tube in rectification unit one, be the negative pole of accumulator.

There is following significant advantage after this practical enforcement：

The quality of power supply, directly influences overall performance.Power source performance is good, then overall performance is good.The one of particular importance It is that important equipment is generally equipped with Accessory Battery, such as can not directly affect the life of storage battery and reliability to its scientific maintenance Property it would be possible to become a kind of new trouble point, if two is if that the power supply parameter of supporting power supply is deposited with the power supply parameter of civil power Lead in difference, electric property will be directly affected, three is that the automatic switchover performance needing two kinds of power supplys will be got well, to ensure each card signal Do not run off.Four is for ordinary electrical home appliance, and some important performances can be made up with the behavior of employment, such as thundery sky, can be artificial Pull out power supply, and a lot of equipment can not be made up with artificial mode, the product of class of such as ensuring public security, and pulling out power supply just makes " security personnel " one-tenth For blank, such as used in the equipment of signal transmission system, pull out power supply and can cause the unimpeded of system signal.What is more, sometimes people Also can not possibly arbitrarily go to power-off source before equipment, pull out power supply.Details success, and the uncertain genus of the problems referred to above is thin Section.This is practical to be a kind of very excellent regulated power supply of performance, and he has all excellent properties of current product, and also has Serial bright spot, therefore can be widely used for the needs of various electronic, adapting to the different development of the electronic product moon new day needs Will.Concrete condition is as follows：

1st, accumulator floating charge can remain to optimum state, because float charge voltage floating charge and load circuit are independent each other.In addition There is an adjustable element, thus the optimum that floating charge can be adjusted to needed for accumulator, thus the maintenance to accumulator has been accomplished Big is scientific.

When the 2nd, using storage battery power supply, can accomplish maximum scientific, its reason one is in battery discharging, can decline quickly To such as 2 volts of the nominal value often lying prostrate, now will be maintained at this value for a long time, now because employing switching audion in this measure （11.1 in Fig. 1）, electric discharge when pressure drop only can reduce 0.1 volt about, this is to be difficult to any method,（If using two poles Pipe can decline 0.7 volt）, so that load can obtain accumulator and protect expensive discharge voltage, basically identical when supplying with civil power, thus not The characteristic loading can be affected.Two is power saving, proposes the method with relay, but relay consumes very much in some technical data Electricity, very unfavorable to supporting accumulator.

3rd, AC voltage-stabilizing unit and accumulator are separate, are independent of each other, thus further increase reliability, and two is to work as No civil power when automatically switch, accumulator automatically engages immediately, and when there being civil power, accumulator is excised automatically.Switch speed is fast, thus Impact will not be produced on load.Ensure that the performance of load.

4th, excellent performance, one is that overvoltage protection effect is especially good.Because defining multi-stage protection.

5th, simple in circuits, easily produces and debugging, and the debug point that reason one is because in circuit is few.Two are, easily quantify very much.Adjust Examination scope is loose, workable.

6th, cheap, wide adaptability, matching is strong.

Brief description

Fig. 1 is the electronic circuitry in integrated form double earth wire type double-purpose source.

In figure：0th, Circuit Fault on Secondary Transformer input；1st, rectification unit one；2.1st, floating charge device；2.2nd, inclined resistance in floating charge；2.3、 Inclined resistance under floating charge；3rd, accumulator；4th, rectification unit two；5.1st, form the diode one of OR gate；5.2nd, two poles of OR gate are formed Pipe two；5.3rd, fast tripping protection relay；5.4th, lightning protection stabilivolt；5.5th, a transfer contact of fast tripping protection relay；5.6、 Another transfer contact of fast tripping protection relay；6.1st, control inclined resistance on audion；6.2nd, control audion；6.3rd, three are controlled Pole pipe collector resistance；7.1st, three terminal regulator one；7.2nd, inclined resistance one in voltage stabilizing；7.3rd, inclined resistance one under voltage stabilizing；8.1st, three End manostat two；8.2nd, inclined resistance two in voltage stabilizing；8.3rd, inclined resistance two under voltage stabilizing；9.1st, isolating diode one；9.2nd, two are isolated Pole pipe two；9.3rd, isolating diode three；10th, equivalent load；11.1st, switch audion；11.2nd, switch unit diode one； 11.3rd, switch unit diode two.

Fig. 2 is to move towards figure to accumulator floating charge loop and battery discharging electric current.

In figure：0th, Circuit Fault on Secondary Transformer input；1st, rectification unit one；2.1st, floating charge device；2.2nd, inclined resistance in floating charge；2.3、 Inclined resistance under floating charge；3rd, accumulator；4th, rectification unit two；5.1st, form the diode one of OR gate；5.2nd, two poles of OR gate are formed Pipe two；5.3rd, fast tripping protection relay；5.4th, lightning protection stabilivolt；5.5th, a transfer contact of fast tripping protection relay；5.6、 Another transfer contact of fast tripping protection relay；6.1st, control inclined resistance on audion；6.2nd, control audion；6.3rd, three are controlled Pole pipe collector resistance；9.1st, isolating diode one；10th, equivalent load；11.1st, switch audion；11.2nd, switch unit two Pole pipe one；11.3rd, switch unit diode two；16th, accumulator floating charge loop current is moved towards；15th, accumulator is to load discharge Loop is moved towards.

Specific embodiment

Fig. 1 and Fig. 2 have expressed a kind of example of making.

First, select element.

1st, floating charge device and two three terminal regulators adopt the integrated regulator of 78 series.

2nd, isolating diode is face fit type diode.

2nd, weld：Electronic circuit welds according to Fig. 1.

3rd, the inspection of energising and debugging：Power supply is allowed to connect load equivalent electrical impedance first.

1st, the symmetry of detection AC voltage-stabilizing level and output voltage：Test the output end voltage Ying Ji of two three terminal regulators This is the same, if differing to by the resistance of inclined resistance under inclined resistance in adjustment voltage stabilizing or voltage stabilizing.

2nd, detect situation during Accessory Battery floating charge.Inclined resistance in adjustment floating charge（2.2 in Fig. 1）With resistance inclined under floating charge （2.3 in Fig. 1）, make floating charge value reach standard.

3rd, the situation during electric discharge of detection Accessory Battery.

Broken civil power, connects equivalent load, surveys switching audion with ammeter（11.1 in Fig. 1）Emitter stage and colelctor electrode electricity Pressure, its pressure drop should be less than 0.2 volt, if excessive, should reduce control transistor collector resistance（6.3 in Fig. 1）Resistance.

4th, the situation of detection control unit work.

When there being civil power, control audion（6.2 in Fig. 1）Current collection extremely low level；It is to control on audion as incorrect Resistance sealing-off, or audion pin wrong plug partially.When no civil power, control audion（6.2 in Fig. 1）Current collection extremely high-order；As Incorrect is to control transistor collector resistance sealing-off.

5th, detect the situation of lightning protection unit.

Two transfer contacts of broken fast tripping protection relay and the connection of rear class, respectively connect a resistance in two transfer contacts On string, display lamp is to ground wire.In not overvoltage, two display lamps are all bright, and exchange is connected on the socket containing AC voltage regulator, Raise the voltage of pressure regulator, after exceeding certain value, two display lamps put out, and are otherwise fast tripping protection relay damaged.

Claims (3)

1. integrated form double earth wire type double-purpose source, is characterized in that：By two rectification units, lightning protection unit, accumulator, floating charge unit, directly Stream-converting unit, AC voltage-stabilizing unit, switch control unit, equivalent load, isolated location forms；

Wherein：Two rectification units are bridge rectifier, and the ground wire of rectification unit one terminates at switching in DC conversion unit On the emitter stage of audion；

The OR gate that lightning protection unit is made up of fast tripping protection relay, lightning protection stabilivolt, two diodes, the output of rectification unit one with The output of rectification unit two connects a line bag termination of the OR gate of two diode compositions to fast tripping protection relay, another line bag termination Take over control thunder stabilivolt to ground wire, two transfer contacts of fast tripping protection relay one of transfer contact connect floating in floating charge unit Fill the input of device, another transfer contact connects the input of two three terminal regulators and switch control unit in AC voltage-stabilizing unit One end of inclined resistance on middle control audion；

AC voltage-stabilizing unit is become with voltage stabilizing diad by voltage stabilizing one unit；

Two voltage regulation units are symmetric circuit, are all made up of resistance inclined under resistance inclined in three terminal regulator, voltage stabilizing, voltage stabilizing；

The input of two three terminal regulators is all connected in another transfer contact of fast tripping protection relay, each three terminal regulator Outfan all connects in a voltage stabilizing inclined resistance to earth terminal, and the earth terminal of each three terminal regulator connects inclined resistance under a voltage stabilizing To ground wire

Floating charge unit is made up of resistance inclined under resistance inclined in floating charge, floating charge device, floating charge：The input of floating charge device connects overvoltage protection and continues One transfer contact of electrical equipment, in the output termination floating charge of floating charge device, resistance partially is to the earth terminal of floating charge device, the ground connection of floating charge device Under termination floating charge, resistance switches the emitter stage of audion in automatic switch unit partially, and the output termination accumulator of floating charge device is just Pole；

Switch control unit by control inclined resistance on audion, control audion, control transistor collector resistance form；

DC conversion unit is by switching audion, switch unit diode one, switch unit diode two form；

The end controlling resistance partially on audion is connected in another transfer contact of fast tripping protection relay, controls on audion partially Another termination of resistance controls the base stage of audion, controls the grounded emitter line of audion, controls the current collection of audion extremely Two-way, a road connects the positive pole controlling transistor collector resistance to accumulator, and another road connects the base stage of switching audion, equivalent negative The output of the termination Alternating Current Power Supply carrying, another termination switches the colelctor electrode of audion, and switch unit diode one is connected on switching Between the colelctor electrode of audion and ground wire, switch unit diode two is connected between emitter stage and the ground wire of switching audion；

Isolated location is made up of three isolating diodes：The outfan of the positive pole of accumulator and two three terminal regulators connects one respectively The positive pole of isolating diode, the negative pole of isolating diode is connected, and is the output in integrated form double earth wire type double-purpose source.

2. integrated form double earth wire type double-purpose source according to claim 1, is characterized in that：Floating charge device is adopted with two three terminal regulators Integrated regulator with 78 series.

3. integrated form double earth wire type double-purpose source according to claim 1, is characterized in that：Isolating diode is face fit type two Pole pipe.