CN102739046B - Auxiliary power supply circuit without electrolytic capacitor - Google Patents
Auxiliary power supply circuit without electrolytic capacitor Download PDFInfo
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- CN102739046B CN102739046B CN201210239411.7A CN201210239411A CN102739046B CN 102739046 B CN102739046 B CN 102739046B CN 201210239411 A CN201210239411 A CN 201210239411A CN 102739046 B CN102739046 B CN 102739046B
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Abstract
The invention relates to an auxiliary power supply circuit without an electrolytic capacitor, which can be applied to a power supply so as to supply direct current to a main control circuit of a power supply. The auxiliary power supply circuit comprises an input end, a first branch circuit, a second branch circuit, a voltage stabilizing circuit and an output end, wherein the input end is connected with a rectification circuit of the power supply, the first branch circuit and the second branch circuit are respectively connected with the input end and the voltage stabilizing circuit in parallel, and the output end is respectively connected with the voltage stabilizing circuit and the main control circuit of the power supply. When the power supply starts, the first branch circuit supplies the direct current to the main control circuit through the voltage stabilizing circuit, thus after the circuit of the power supply starts working, the second branch circuit supplies the direct current to the series voltage stabilizing circuit when half-wave direct current supplied to the power supply is in a peak state, and the first branch circuit supplies the direct current to the series voltage stabilizing circuit when the half-wave direct current supplied to the power supply is in a valley state.
Description
Technical field
The present invention relates to Switching Power Supply, the auxiliary power circuit particularly in Switching Power Supply, this auxiliary power circuit does not adopt electrochemical capacitor, and can be applied among no electrolytic capacitor Switching Power Supply, thus extends the useful life of this no electrolytic capacitor power supply.
Background technology
Because LED (Light emitting diode) has efficiently, long service life, environmental protection and the little feature of volume, make the lighting technology of LED obtain very large development, thus bring new opportunity to traditional illumination market.LED can be applied in street lighting, but but finds that the useful life of this LED street lamp is not long, and often breaks down.Its reason is the power failure of powering to this LED street lamp.In particular, the electrochemical capacitor in the power supply of powering to this LED street lamp breaks down.The theoretical life-span of the electrochemical capacitor of traditional approach design is adopted to only have 10000 hours (the hot operation state at LED), this designed life well below LED (50000 hours).Therefore, electrochemical capacitor improves LED long-term reliability breach.Therefore, no electrolytic capacitor power supply solves a LED research direction reliably and with long-term.
As shown in Figure 1, shown in Fig. 1 is traditional Switching Power Supply structure.Traditional Switching Power Supply generally comprises a rectification circuit, an auxiliary power circuit, a power stage circuit, a subordinate or output circuit, a main control circuit and a testing circuit.The research of present no electrolytic capacitor power supply, concentrates the problem researched and solved and do not use no electrolytic capacitor at rectification circuit, subordinate or output circuit, power stage circuit.But have ignored the problem solving and use electrochemical capacitor in auxiliary power circuit, therefore, although present no electrolytic capacitor power supply is greatly improved in reliability, but also do not include the no electrolytic capacitor of real meaning, because the guidance power supply in this no electrolytic capacitor power supply also has electrochemical capacitor.There is electrochemical capacitor in auxiliary power circuit, be a destabilizing factor of the long-term reliability of this no electrolytic capacitor power supply, thus constrain the raising of this no electrolytic capacitor power supply reliability.In general, the main control circuit that this auxiliary power circuit is mainly in Switching Power Supply is powered.Alternating current, by after this rectifier circuit rectifies of Switching Power Supply, enters this auxiliary power circuit, is converted into direct current this main control module work for Switching Power Supply by auxiliary power circuit.
In the auxiliary power circuit of conventional power source, the effect of electrochemical capacitor, mainly when the alternating current being supplied to this power supply is zero, supplies the output of direct current to this auxiliary power circuit by this electrochemical capacitor, to maintain the stable of the magnitude of voltage of this output.Because the capacity of the Capacity Ratio electrochemical capacitor of non-electrolytic capacitor is little, and price, therefore directly using the non-electrolytic capacitor equal with the electrochemical capacitor capacity in this auxiliary power circuit to substitute electrochemical capacitor, is not an adequate solution way.In auxiliary power circuit, use non-electrolytic capacitor, need in the face of this auxiliary power circuit how to start and alternating current zero passage time, the two problems of powering with how safeguarding stability.
Summary of the invention
A goal of the invention of the present invention is to provide a no electrolytic capacitor auxiliary power circuit, to extend the useful life of this auxiliary power circuit.
Another goal of the invention of the present invention is to provide a no electrolytic capacitor auxiliary power circuit, and it can be applied in a no electrolytic capacitor power supply, thus improves the reliability of this no electrolytic capacitor power supply and extend the useful life of this no electrolytic capacitor power supply.
Another goal of the invention of the present invention is to provide a no electrolytic capacitor auxiliary power circuit, and this first subcircuits can maintain this no electrolytic capacitor auxiliary power circuit steady operation when the half-wave DC electricity inputing to this no electrolytic capacitor auxiliary power circuit is in paddy state.
Another goal of the invention of the present invention is to provide a no electrolytic capacitor auxiliary power circuit, and this second subcircuits can maintain this no electrolytic capacitor auxiliary power circuit steady operation when the half-wave DC electricity inputing to this no electrolytic capacitor auxiliary power circuit is in crest state.
Another goal of the invention of the present invention is to provide a no electrolytic capacitor auxiliary power circuit, and this first subcircuits can start this no electrolytic capacitor auxiliary power circuit.
Another goal of the invention of the present invention is the method for supplying power to providing a no electrolytic capacitor auxiliary power circuit, wherein, when when power initiation and when being in the state of paddy when the half-wave DC electricity inputing to this no electrolytic capacitor auxiliary power circuit, powered to this voltage stabilizing circuit by this first subcircuits, when the half-wave DC electricity inputing to this no electrolytic capacitor auxiliary power circuit is in the state at peak, powered to this voltage stabilizing circuit by this second subcircuits.
Another goal of the invention of the present invention is to provide a no electrolytic capacitor auxiliary power circuit, the less in-fighting power of this no electrolytic capacitor auxiliary power circuit, thus makes this no electrolytic capacitor auxiliary power circuit have higher efficiency.
Another goal of the invention of the present invention is to provide a no electrolytic capacitor auxiliary power circuit, this no electrolytic capacitor accessory power supply has duplex feeding circuit, one first subcircuits and one second subcircuits, this first subcircuits when this no electrolytic capacitor auxiliary power circuit starts and be supplied to this auxiliary power circuit half-wave DC electricity in paddy state time power, the half-wave DC electricity that this second subcircuits is supplied to this auxiliary power circuit is powered when crest state, thus make this no electrolytic capacitor auxiliary power circuit can sustainedly and stably supplying energy to meet the normal requirements of one's work of this governor circuit.
Another goal of the invention of the present invention is to provide a no electrolytic capacitor auxiliary power circuit, to realize real no electrolytic capacitor power supply.
In order to realize foregoing invention object, the invention discloses an auxiliary power circuit, for being applied to a power supply, and this auxiliary power circuit is connected with a rectification circuit of this power supply respectively and is connected with a main control circuit, and it is characterized in that, this defeated power circuit that helps comprises:
One input, this input is connected with this rectification circuit of this power supply, so that the half-wave DC electricity by this rectifier circuit rectifies is supplied to this auxiliary power circuit;
One first subcircuits;
One second subcircuits, this first subcircuits is connected this input respectively with this second subcircuits;
One voltage stabilizing circuit, this voltage stabilizing circuit connects this main control circuit of this first subcircuits, this second subcircuits and this power supply respectively; With
One output, this output is connected with the main control circuit of this voltage stabilizing circuit and this power supply, to supply direct current this main control circuit to this power supply respectively;
Wherein, when this power initiation, direct current is supplied to this voltage stabilizing circuit by this first subcircuits, thus this auxiliary power circuit is started working, in working order, when be supplied to this auxiliary power circuit half-wave DC electricity in crest state time, direct current is supplied to this voltage stabilizing circuit by this second subcircuits, direct current is supplied to this output again by this voltage stabilizing circuit, when be supplied to this auxiliary power circuit half-wave DC electricity in paddy state time, direct current is supplied to this voltage stabilizing circuit by this first subcircuits, direct current again after this voltage stabilizing circuit is stablized is to this output, finally supply direct current this main control circuit to this power supply by this output.
The present invention also discloses the method for supplying power to of an auxiliary power circuit, and it comprises the following steps:
Step 1: the state detecting this auxiliary power circuit, if be in this power initiation state, then perform step 2, if be supplied to the half-wave DC electricity of this auxiliary power circuit in crest state, then perform step 3, if the half-wave DC electricity being supplied to this auxiliary power circuit in paddy state, then performs step 2.
Step 2: supply direct current through this voltage stabilizing circuit to this output by one first subcircuits of this auxiliary power circuit.
Step 3: supply direct current through this voltage stabilizing circuit to this output by one second subcircuits of this auxiliary power circuit.
Accompanying drawing explanation
Fig. 1 is the structure chart in a traditional switch power supply.
Fig. 2 is the block diagram of an auxiliary power circuit of one embodiment of the present invention, shows the structure of this auxiliary power circuit.
Fig. 3 is the circuit diagram of one embodiment of the present invention.
Fig. 4 is the circuit diagram of an alternative of the first subcircuits of above preferred embodiment of the present invention.
Embodiment
According to the content disclosed in claim of the present invention and specification, described in technical scheme of the present invention literary composition specific as follows.
As shown in Figure 2, according to an auxiliary power circuit of a preferred embodiments of the present invention, wherein this auxiliary power circuit comprises one first subcircuits 10, one second rood circuit 20 and a voltage stabilizing circuit 30, this first subcircuits 10 and this second subcircuits 20 respectively with an input V of this auxiliary power circuit
inconnect, this first subcircuits 10 is connected with this voltage stabilizing circuit 30 respectively with this second subcircuits 20, this voltage stabilizing circuit 30 and an output V
ccconnect.This auxiliary power circuit can be applicable to a power supply, is other circuit supply in this power supply, is preferably a main control circuit supply direct current of this power supply.Preferably, this power supply is a no electrolytic capacitor power supply.This input V
inconnect a rectification circuit of this power supply, so that the half-wave DC electricity by this rectifier circuit rectifies is supplied to this auxiliary power circuit.This output V
ccconnect this main control circuit of this voltage stabilizing circuit 30 and this power supply respectively, to supply direct current this main control circuit to this power supply.This auxiliary power circuit comprises one second output V further
out, this second output V
outbe connected with a main power stage circuit of this power supply and/or other circuit of this power supply, so that the half-wave DC electricity by this rectifier circuit rectifies is supplied to this main power stage circuit.
When this power initiation, supply direct current by this first subcircuits 10 to this voltage stabilizing circuit 30, then by this voltage stabilizing circuit 30 by this output V
ccto this main control circuit supply direct current, when this voltage stabilizing circuit 30 is to this main control circuit supply direct current, power initiation.When this power supply in working order under, when the half-wave DC electricity inputting this auxiliary power circuit is in crest state, this defeated this second subcircuits 20 of power supply that helps supplies direct current to this voltage stabilizing circuit 30 of this auxiliary power circuit, supplies direct current to this main control circuit to maintain this voltage stabilizing circuit 30.
When input to this auxiliary power circuit half-wave DC electricity in paddy state time, also supply direct current to this voltage stabilizing circuit 30 by this first subcircuits 10, thus make this voltage stabilizing circuit 30 by this output V
ccabsorbable organic halogens ground is to this main control circuit supply direct current.It is worth mentioning that, described crest state refers to the state of half-wave DC electricity in the first half.Paddy state refers to the state of half-wave DC electricity in the latter half.
As shown in Figure 3, this first subcircuits 10 is connected to a control node 60 with the input of this voltage stabilizing circuit 30.The change in voltage of this control node 60 can affect the change in voltage of this voltage stabilizing circuit 30.That is, when the voltage of this control node 60 raises, the voltage of this voltage stabilizing circuit 30 also increases, when the magnitude of voltage of this control node 60 declines thereupon.It is worth mentioning that, this first subcircuits 10 has a switch valve value, and when the magnitude of voltage of this control node 60 is less than this switch valve value, this first subcircuits 10 supplies direct current to this voltage stabilizing circuit 30.When the magnitude of voltage of this control node 60 is equal to or greater than this switch valve value, this first subcircuits 10 stops powering to this voltage stabilizing circuit 30.That is, when the magnitude of voltage of this input of this voltage stabilizing circuit 30 is less than this switch valve value, this first subcircuits 10 supplies direct current to this voltage stabilizing circuit 30.When the magnitude of voltage of this input of this voltage stabilizing circuit 30 is equal to or greater than this switch valve value, this first subcircuits 10 stops powering to this voltage stabilizing circuit 30.
When the power source is activated, the magnitude of voltage of this control node 60 is less than the switch valve value of this first subcircuits 10, and this first subcircuits 10 starts to power to this voltage stabilizing circuit 30 of this auxiliary power circuit.The magnitude of voltage of this control node 60 increases gradually.After this power initiation, if the half-wave DC electricity now inputting this auxiliary power circuit is in crest state, the magnitude of voltage of this control node 60 continues to increase.When the magnitude of voltage of this control node 60 is not equal to or greater than the shape threshold values of this first subcircuits, this first subcircuits 10 and this second subcircuits 20 supply direct current to this voltage stabilizing circuit 30 of this auxiliary power circuit simultaneously.When the magnitude of voltage of this control node 60 is equal to or greater than this switch valve value, this first subcircuits 10 stops powering to this stabilizing circuit 30 of this auxiliary power circuit.In this case, this voltage stabilizing circuit 30 is powered by this second subcircuits 20 completely.When the half-wave DC electricity inputting this accessory power supply is in paddy state, this second subcircuits 20 stops powering to this voltage stabilizing circuit 30 voltage drop of this control node 60.When the magnitude of voltage of this control node 60 is reduced to less than this switch valve value of this first subcircuits 10, this first subcircuits 10 is powered to this voltage stabilizing circuit 30, with make this voltage stabilizing circuit 30 can regular supply direct current to this main control circuit.The magnitude of voltage of this control node 60 starts to increase, and when this switch valve value of this first subcircuits such as magnitude of voltage of this control node 60, this first subcircuits 10 stops powering to this voltage stabilizing circuit 30.
As shown in Figure 3, this auxiliary power circuit comprises an electric capacity C further
4, this electric capacity C
4respectively with this first subcircuits 10, this second subcircuits 20 is connected with this voltage stabilizing circuit 30.When this power initiation, supply direct current by this first subcircuits 10 to this voltage stabilizing circuit 30, then supply direct current by this voltage stabilizing circuit 30 to this main control circuit.Meanwhile, this first subcircuits 10 is to this electric capacity C
4charging.When this voltage stabilizing circuit 30 is to this main control circuit supply direct current, power initiation.When this power supply in working order under, when the half-wave DC electricity inputting this auxiliary power circuit is in crest state, this defeated this second subcircuits 20 of power supply that helps supplies direct current to this voltage stabilizing circuit 30 of this auxiliary power circuit, supplies direct current to this main control circuit to maintain this voltage stabilizing circuit 30.Now this electric capacity C
4only provide a small amount of filtering, to reduce interference to this second subcircuits 20.When input to this auxiliary power circuit half-wave DC electricity in paddy state time, also supply direct current to this voltage stabilizing circuit 30 by this first subcircuits 10, thus with making this voltage stabilizing circuit 30 Absorbable organic halogens to this main control circuit supply direct current.Now this electric capacity C
4also power to this voltage stabilizing circuit 30.Due to this auxiliary power circuit voltage stabilizing circuit 30 primarily of this first and this second subcircuits 10,20 supply direct current, and this electric capacity only provides a small amount of filtering to the second subcircuits 20, therefore this electric capacity C
4the non-electrolytic capacitor that capacity is less can be adopted.Preferably, the capacity of non-electrolytic capacitor that this commutation capacitor adopts can at≤0.47uF.
When the power source is activated, the magnitude of voltage of this control node 60 is less than the switch valve value of this first subcircuits 10, and this first subcircuits 10 starts to power to this voltage stabilizing circuit 30 of this auxiliary power circuit, and this first subcircuits 10 is also to this electric capacity C simultaneously
4charging.The magnitude of voltage of this control node 60 increases gradually.After this power initiation, if the half-wave DC electricity now inputting this auxiliary power circuit is in crest state, the magnitude of voltage of this control node 60 continues to increase.When the magnitude of voltage of this control node 60 is not equal to or greater than the shape threshold values of this first subcircuits, this first subcircuits 10 and this second subcircuits 20 supply direct current to this voltage stabilizing circuit 30 of this auxiliary power circuit simultaneously.When the magnitude of voltage of this control node 60 is equal to or greater than this switch valve value, this first subcircuits 10 stops powering to this stabilizing circuit 30 of this auxiliary power circuit.In this case, this voltage stabilizing circuit 30 is powered by this second subcircuits 20 completely.Now this electric capacity C
4only filtering can be provided, to reduce interference to this second subcircuits 20.When the half-wave DC electricity inputting this accessory power supply is in paddy state, this second subcircuits 20 stops powering to this voltage stabilizing circuit 30 voltage drop of this control node 60.Now, this electric capacity C
4power to this voltage stabilizing circuit 30, due to this electric capacity C
4capacity little, its electricity being supplemented to this voltage stabilizing circuit 30 can not meet the demand of this voltage stabilizing circuit 30.The magnitude of voltage of this control node continues to reduce.When the magnitude of voltage of this control node 60 is reduced to less than this switch valve value of this first subcircuits 10, this first subcircuits 10 is powered to this voltage stabilizing circuit 30, with make this voltage stabilizing circuit 30 can regular supply direct current to this main control circuit.Meanwhile, this first subcircuits 10 is to this electric capacity C
4charging.The magnitude of voltage of this control node 60 starts to increase, and when this switch valve value of this first subcircuits such as magnitude of voltage of this control node 60, this first subcircuits 10 stops powering to this voltage stabilizing circuit 30.
As shown in Figure 3, this auxiliary power circuit according to a preferred embodiment of the invention, this first subcircuits 10 comprises resistance R further
1, resistance R
2, a diode D
5, an electric capacity C
2, a voltage stabilizing didoe Z
1with a switch element Q
1.This resistance R
1with this diode D
5series connection, and this resistance R
1one end connect this input V
in, the other end connects this diode D
5positive pole.This voltage stabilizing didoe Z
1with this resistance R
2after series connection, then with this electric capacity C
2parallel connection, and then be connected to this diode D in the mode of series connection
5negative pole.It should be noted that this resistance R
2one end connect this diode D
5negative pole, this resistance R
2the other end connect this voltage stabilizing didoe Z
1a negative pole, a positive pole of this voltage stabilizing didoe connects a signal ground 19.This electric capacity C
2one end and this diode D
5negative pole be connected to a node 11, this electric capacity C
2the other end connect this signal ground 19.This switch element Q
1connect the D of this diode respectively
5negative pole, this control node 60 and this voltage stabilizing didoe D
5with this resistance R
2between a node 12, supply direct current to control this first subcircuits 10 to this voltage stabilizing circuit 30.That is, this switch element Q
1respectively with this voltage stabilizing didoe Z
1with this resistance R
2between, this diode D
5negative pole, this input of this voltage stabilizing circuit 30 connects, and answers direct current to control this first subcircuits 10 to this voltage stabilizing circuit 30.Preferably, this switch element Q
1it is a MOSFET pipe.This switch element Q
1one drain electrode with this diode D
5negative pole connect, this switch element Q
1a grid be connected to this voltage stabilizing didoe Z
1with this resistance R
2between this node 12, this switch element Q
1one source pole be connected to this control node 60, that is, this switch element Q
1one source pole be connected to an input of this voltage stabilizing circuit 30.This electric capacity C
2it is a non-electrolytic capacitor.
When the power source is activated, the voltage of this control node 60 is lower than this diode D
5the voltage of negative pole.That is, this switch element Q
1this source voltage lower than this switch element Q
1this drain voltage, and this switch element Q
1this grid be applied in a positive voltage, this switch element Q
1be in opening.And this switch element Q
1this grid be connected to this voltage stabilizing didoe Z
1with this resistance R
2between, thus make this switch element Q
1grid voltage stablize constant.This input V of this auxiliary power circuit
inby this resistance R
1, this diode D
5with this switch element Q
1this voltage stabilizing circuit 30 to this auxiliary power circuit supplies half-wave DC electricity, thus starts this auxiliary power circuit.Meanwhile, this electric capacity C
2be in charged state.The magnitude of voltage of this control node 60 increases gradually.As this switch element Q
1this source voltage be equal to or greater than this switch element Q
1this grid voltage time, this switch element Q
1be in closed condition.That is, this switch element Q
1this switch valve value equal this Q
1grid voltage.This first subcircuits 10 stops powering to this voltage stabilizing circuit 30.
When the half-wave DC electricity inputing to this auxiliary power circuit is in crest state, this second subcircuits 20 is to this output V
ccpower supply.When this input to this auxiliary power circuit half-wave DC electricity in paddy state time, this second subcircuits 20 stops powering to this voltage stabilizing circuit 30 of this auxiliary power circuit.Now, this input terminal voltage of this this voltage stabilizing circuit 30 declines, and the magnitude of voltage of this control node 60 declines, that is, and this switch element Q
1source voltage decline.Although this electric capacity C
4voltage stabilizing circuit 30 to this auxiliary power circuit is powered, due to this electric capacity C
4capacity less, this electric capacity C
4the electricity that supplements be not enough to the drop-out value of this control node 60 voltage supplementary.And, as this switch element Q
1source voltage drop to and be less than this switch element Q
1grid voltage time, this switch element Q
1be in opening.This voltage stabilizing circuit 30 of this this auxiliary power circuit of the first subcircuits 10 is powered, to supplement this electric capacity C
4electricity shortage, thus this voltage stabilizing circuit 30 maintaining this auxiliary power circuit is to this main control circuit stable power-supplying.The magnitude of voltage of this control node 60 starts to increase, as this switch element Q
1this source voltage be equal to or greater than this switch element Q
1this grid voltage time, this switch element Q
1be in closed condition.That is, this switch element Q
1this switch valve value equal this Q
1grid voltage.This first subcircuits 10 stops powering to this voltage stabilizing circuit 30.
It is worth mentioning that, when the half-wave DC electricity inputting this auxiliary power circuit is in crest state, as this diode D
5the magnitude of voltage of negative pole be greater than this electric capacity C
2magnitude of voltage time, this electric capacity C
2keep charged state.By this input V
into this capacitor charging.
This second subcircuits 20 comprises a transformer T further
1with two diode D
2, D
3.This transformer T
1comprise an one-level coil T further
11with two secondary coil T
21, T
22, this transformer T
1this one-level coil T
11with this input V
inconnect, this secondary coil T
21with this secondary coil T
22abutting end connect a signal ground 24, this secondary coil T
22with this secondary coil T
21abutting end connect this signal ground.This secondary coil T
21the other end with series connection mode connect this diode D
2positive pole.This secondary coil T
22the other end with series connection mode connect this diode D
3positive pole.This diode D
2with this diode D
3parallel connection, this diode D
2negative pole and this diode D
3negative pole be connected to this voltage stabilizing circuit 30.
This electric capacity C
4one end be also connected to this node 21, this electric capacity C
4other end ground connection.
As shown in Figure 3, this voltage stabilizing circuit 30 is preferably a serial regulating circuit, and this serial regulating circuit comprises further: a voltage stabilizing didoe Z
2, a triode Q
3with a resistance R
3, this voltage stabilizing didoe Z
2negative pole connect the base stage of this triode, to keep base voltage constant, this triode Q
3emitter and this output V
ccconnect, the collector electrode of this triode is connected with this control node 60, this resistance R
3one end be connected with this control node 60, this resistance R
3the other end be connected to this voltage stabilizing didoe Z2 and this triode Q
3between.This voltage stabilizing didoe Z
2minus earth.
In order to make this output V
ccthe voltage exported is more stable, and this auxiliary power circuit comprises a filter capacitor C further
3, this filter capacitor and this output V
ccconnect, to improve this output V
ccthe stability of power supply.
As shown in Figure 4, according to an alternative of the first subcircuits of an auxiliary power circuit of above-mentioned preferred embodiment of the present invention.This first subcircuits 10A comprises four diode D further
5A, D
6A, D
7A, D
8A, two electric capacity C
2A, C
2B, two resistance R
1A, R
2A, a voltage stabilizing didoe Z
1Awith a switch element Q
1A.This resistance R
1Awith this diode D
5Aseries connection, and this resistance R
1one end connect this input V
in, this resistance R
1Athe other end connect this diode D
5Apositive pole.This diode D
8Apositive pole connect a signal ground 19A, this diode D
8Anegative pole connect this electric capacity C
2Aone end, this electric capacity C
2Athe other end connect this diode D
5Anegative pole in a node 11A.This electric capacity C
2Bone end connect this signal ground 19A, this electric capacity C
2Bthe other end connect this diode D
6Apositive pole, this diode D
6Anegative pole connect this diode D
5Anegative pole in.This voltage stabilizing didoe Z
1Apositive pole connect this signal ground 19A, this voltage stabilizing didoe Z
1Anegative pole meet this resistance R
2Aone end, this resistance R
2Athe other end connect this diode D
5Anegative pole.This diode D
7Apositive pole be connected at this electric capacity C
2Awith this diode D
8Anegative pole between, this diode D
7Anegative pole be connected to this electric capacity C
2Bwith this diode D
6Apositive pole between.This switch element Q
1Aconnect this voltage stabilizing didoe Z respectively
1Anegative pole and this resistance R
2Abetween, this diode D
5Anegative pole and this voltage stabilizing circuit 30.That is, this switch element Q
1Aconnect this diode D respectively
5Anegative pole, this voltage stabilizing didoe Z
1Anegative pole and this resistance R
2Abetween, this control node 60.This switch element Q
1Abe preferably a MOSFET pipe, power to this voltage stabilizing circuit 30 to control this first subcircuits 10A.This switch element Q
1Aa drain electrode be connected to this diode D
5Anegative pole, this switch element Q
1Agrid be connected to this voltage stabilizing didoe Z
1Anegative pole and this resistance R
2Abetween a node 12A, this voltage stabilizing didoe Z
1Athis switch element Q can be made
1Agrid voltage stablize constant.This switch element Q
1Asource electrode be connected to this control node 60.This electric capacity C
2Awith this electric capacity C
2Bfor non-electrolytic capacitor.
It is worth mentioning that, adopt above-mentioned connected mode, in the charge state, this electric capacity C
2Awith this electric capacity C
2Bthat the mode of connecting is charged.In the discharged condition, this electric capacity C
2Awith this electric capacity C
2Bdischarge in parallel.That is, first subcircuits 10A of this alternative compares with the first subcircuits 10 of this optimum embodiment shown in Fig. 3, be fed to the electricity that this voltage stabilizing circuit 30 is identical, the discharge voltage of this alternative only needs the half of this optimum embodiment, thus this switch element Q
1Aon power consumption reduce half, thus improve the efficiency of this auxiliary power circuit.
When the power source is activated, the voltage of this control node 60 is lower than the D of this diode
5Athe voltage of negative pole.That is, this switch element Q
1Athis source voltage lower than this switch element Q
1Athis drain voltage, and this switch element Q
1Athis grid be applied in a positive voltage, this switch element Q
1Abe in opening.And this switch element Q
1Athis grid be connected to this voltage stabilizing didoe Z
1Awith this resistance R
2Abetween, thus make this switch element Q
1Agrid voltage stablize constant.This input V
inby this resistance R
1A, this diode D
5Awith this switch element Q
1Ato the voltage stabilizing circuit 30 of this auxiliary power circuit, thus start this auxiliary power circuit.Meanwhile, this electric capacity C
2Awith this electric capacity C
2Bbe in charged state.The magnitude of voltage of this control node 60 rises gradually.As this switch element Q
1Athis source voltage be equal to or greater than this switch element Q
1Athis grid voltage time, this switch element Q
1Abe in closed condition.That is, this switch element Q
1Athis switch valve value equal this switch element Q
1Agrid voltage.This first subcircuits 10A stops powering to this voltage stabilizing circuit 30.。
When input to this defeated help the half-wave DC electricity of power circuit to be in crest state time, this second subcircuits 20 is powered to this voltage stabilizing circuit 30.When this input to this auxiliary power circuit half-wave DC electricity in paddy state time, this second subcircuits 20 stops powering to this voltage stabilizing circuit 30 of this auxiliary power circuit.Now, the magnitude of voltage of this control node 60 declines, that is, and this switch element Q
1Asource voltage decline.Although this electric capacity C
4this voltage stabilizing circuit 30 to this auxiliary power circuit is powered, due to this electric capacity C
4capacity less, this electric capacity C
4the electricity that supplements be not enough to the drop-out value of this control node 60 voltage supplementary.And, as this switch element Q
1Asource voltage drop to and be less than this switch element Q
1Agrid voltage time, this switch element Q
1Abe in opening.This electric capacity C
2Awith this electric capacity C
2Bthis voltage stabilizing circuit 30 in parallel to this auxiliary power circuit supplies direct current, to supplement this electric capacity C
4electricity shortage, thus maintain this auxiliary power circuit output V
ccstable supply direct current.The magnitude of voltage of this control node 60 starts to increase, as this switch element Q
1Athis source voltage be equal to or greater than this switch element Q
1Athis grid voltage time, this switch element Q
1Abe in closed condition.This first subcircuits 10 stops supplying direct current to this voltage stabilizing circuit 30.
It is worth mentioning that, when the half-wave DC electricity inputting this accessory power supply is in crest state, when the magnitude of voltage of this node 11A is greater than this electric capacity C
2Awith this electric capacity C
2Bmagnitude of voltage time, this electric capacity C
2Awith this electric capacity C
2Bcharge in the mode of series connection.
The present invention also discloses an auxiliary power circuit method of supplying power to, and this auxiliary power circuit is applied among a power supply, and be preferably no electrolytic capacitor power supply, this auxiliary power circuit method of supplying power to comprises the following steps:
Step 1: the state detecting this auxiliary power circuit, if be in this power initiation state, then performs step 2, if be supplied to the half-wave DC electricity of this power supply in crest state, then perform step 3, if the half-wave DC being supplied to this power supply is electric in paddy state, then perform step 2.
Step 2: supply direct current to a voltage stabilizing circuit 30 of this auxiliary power circuit by one first subcircuits 10 of this auxiliary power circuit.
Step 3: supply direct current to this voltage stabilizing circuit 30 of this auxiliary power circuit by one second subcircuits 20 of this auxiliary power circuit.
In step 2 above, further comprising the steps:
Step 2.1: the relation detecting the magnitude of voltage of this voltage stabilizing circuit 30 and a switch valve value of this first subcircuits 10, to determine whether this first subcircuits 10 powers to this voltage stabilizing circuit 30 of this auxiliary power circuit, if the magnitude of voltage of this voltage stabilizing circuit 30 is less than this switch valve value of this first subcircuits 10, then perform step 2.2, if the magnitude of voltage of this voltage stabilizing circuit 30 is equal to or greater than this switch valve value of this first subcircuits 10, then return step 1.
Step 2.2: the state detecting this auxiliary power circuit, if be in this power initiation state, then performs step 2.3, if it is electric in paddy state to be in the half-wave DC being supplied to this auxiliary power circuit, then performs step 2.4.
Step 2.3: by an input V of this auxiliary power circuit
indirect current is supplied, to start power supply to this voltage stabilizing circuit 30 of this auxiliary power circuit by this first subcircuits 10.
Step 2.4: supply direct current to this voltage stabilizing circuit 30 of this auxiliary power circuit by the electric capacity in this first subcircuits 10, to maintain the stable supply direct current of this voltage stabilizing circuit 30.
In above-mentioned steps 3, further comprising the steps:
Step 3.1: detect whether the half-wave DC electricity being supplied to this power supply is crest state, if be supplied to the half-wave DC electricity of this auxiliary power circuit in paddy state, then perform step 3.2, if the half-wave DC being supplied to this accessory power supply is electric in crest state, then return step 1.
Step 3.2: supply direct current to this voltage stabilizing circuit 30 of this auxiliary power circuit by one second subcircuits 20 of this auxiliary power circuit.
Foregoing is exemplifying of specific embodiments of the invention, for equipment and the structure of wherein not detailed description, should be understood to take the existing common apparatus in this area and universal method to be implemented.
The above embodiment of the present invention is only the use that technical solution of the present invention is described simultaneously, is only enumerating of technical solution of the present invention, is not limited to technical scheme of the present invention and protection range thereof.Equivalent technologies means, equivalent apparatus etc. is adopted to be considered to be to the improvement of the technical scheme disclosed in claims of the present invention and specification the scope do not exceeded disclosed in claims of the present invention and specification.
Claims (13)
1. an auxiliary power circuit, for being applied to a power supply, and this auxiliary power circuit is connected with a rectification circuit of this power supply respectively and a main control circuit connects, and it is characterized in that, comprising:
One input, this input is connected with this rectification circuit of this power supply, so that the half-wave DC electricity by this rectifier circuit rectifies is supplied to this auxiliary power circuit;
One first subcircuits;
One second subcircuits, this first subcircuits is connected this input respectively with this second subcircuits;
One voltage stabilizing circuit, this voltage stabilizing circuit connects this main control circuit of this first subcircuits, this second subcircuits and this power supply respectively; With
One output, this output is connected with the main control circuit of this voltage stabilizing circuit and this power supply, to supply direct current this main control circuit to this power supply respectively;
Wherein, when this power initiation, direct current is supplied to this voltage stabilizing circuit by this first subcircuits, thus this auxiliary power circuit is started working, in working order, when be supplied to this auxiliary power circuit half-wave DC electricity in crest state time, direct current is supplied to this voltage stabilizing circuit by this second subcircuits, direct current is supplied to this output again by this voltage stabilizing circuit, when be supplied to this auxiliary power circuit half-wave DC electricity in paddy state time, direct current is supplied to this voltage stabilizing circuit by this first subcircuits, direct current again after this voltage stabilizing circuit is stablized is to this output, finally supply direct current this main control circuit to this power supply by this output,
Wherein, this first subcircuits comprises a resistance R further
1, a resistance R
2, a diode D
5, an electric capacity C
2, a voltage stabilizing didoe Z
1with a switch element Q
1, this resistance R
1with this diode D
5series connection, and this resistance R
1one end connect this input, the other end connects this diode D
5positive pole, this voltage stabilizing didoe Z
1with this resistance R
2after series connection, then with this electric capacity C
2parallel connection, and then be connected to this diode D in the mode of series connection
5negative pole, this switch element Q
1connect this voltage stabilizing didoe Z respectively
1with this resistance R
2between, and this diode D
5negative pole and this voltage stabilizing circuit, wherein, this resistance R
2one end connect this diode D
5negative pole, this resistance R
2the other end connect this voltage stabilizing didoe Z
1negative pole, this voltage stabilizing didoe positive pole connection signal ground, this electric capacity C
2one end and this diode D
5negative pole connect, this electric capacity C
2the other end connect this signal ground,
Wherein, described second subcircuits comprises a transformer T further
1with two diode D
2, D
3, this transformer T
1comprise an one-level coil T further
11with two secondary coil T
21, T
22, this transformer T
1this one-level coil T
11be connected with this input, this secondary coil T
21with this secondary coil T
22abutting end connect a signal ground, this secondary coil T
22with this secondary coil T
21abutting end connect this signal ground, this secondary coil T
21the other end with series connection mode connect this diode D
2positive pole, this secondary coil T
22the other end with series connection mode connect this diode D
3positive pole, this diode D
2negative pole and this diode D
3negative pole be connected with this voltage stabilizing circuit respectively.
2. auxiliary power circuit as claimed in claim 1, it is characterized in that, this first subcircuits has a switch valve value, direct current whether is supplied to this voltage stabilizing circuit to control this first subcircuits, wherein, when the magnitude of voltage of this voltage stabilizing circuit is less than this switch valve value, this first subcircuits supply direct current is to this voltage stabilizing circuit, when the voltage of this voltage stabilizing circuit is being equal to or greater than this switch valve value, this first subcircuits stops supply direct current to this voltage stabilizing circuit.
3. auxiliary power circuit as claimed in claim 2, it is characterized in that, this auxiliary power circuit comprises an electric capacity C further
4, this electric capacity C
4connect this first subcircuits, this second subcircuits and this voltage stabilizing circuit respectively, this electric capacity C
4there is provided a small amount of filtering, to reduce circuit interference.
4. auxiliary power circuit as claimed in claim 3, is characterized in that, this electric capacity C
4for non-electrolytic capacitor, this capacitance is≤0.47uF.
5. auxiliary power circuit as claimed in claim 1, it is characterized in that, this first subcircuits comprises at least one electric capacity further, when be supplied to this accessory power supply half-wave DC electricity in the state for paddy time, this electric capacity by this first subcircuits to this voltage stabilizing circuit supply direct current.
6. auxiliary power circuit as claimed in claim 1, it is characterized in that, wherein, the input of this first subcircuits and this voltage stabilizing circuit is connected to a control node, the change in voltage of this voltage stabilizing circuit of voltage variations affect of this control node, wherein, the voltage of this control node raises, and the voltage of this voltage stabilizing circuit raises, the voltage of this control node reduces, the voltage of this voltage stabilizing circuit reduces, wherein, when the magnitude of voltage of this voltage stabilizing circuit is less than this voltage stabilizing didoe Z
1with this resistance R
2between magnitude of voltage, this switch element Q
1be in opening, this first subcircuits supplies direct current, when the magnitude of voltage of this voltage stabilizing circuit is equal to or greater than this voltage stabilizing didoe Z to this voltage stabilizing circuit
1with this resistance R
2between magnitude of voltage, this first subcircuits stop to this voltage stabilizing circuit supply direct current.
7. auxiliary power circuit as claimed in claim 1, it is characterized in that, this first subcircuits is replaced by: four diode D
5A, D
6A, D
7A, D
8A, two electric capacity C
2A, C
2B, two resistance R
1A, R
2A, a voltage stabilizing didoe Z
1Awith a switch element Q
1A, this resistance R
1Awith this diode D
5Aseries connection, and this resistance R
1Aone end connect this input, this resistance R
1Athe other end connect this diode D
5Apositive pole, this diode D
8Apositive pole connect a signal ground, this diode D
8Anegative pole connect this electric capacity C
2Aone end, this electric capacity C
2Athe other end connect this diode D
5Anegative pole, this electric capacity C
2Bone end connect this signal ground, this electric capacity C
2Bthe other end connect this diode D
6Apositive pole, this diode D
6Anegative pole connect this diode D
5Anegative pole, this voltage stabilizing didoe Z
1Apositive pole connect this signal ground, this voltage stabilizing didoe Z
1Anegative pole meet this resistance R
2Aone end, this resistance R
2Athe other end connect this diode D
5Anegative pole, this diode D
7Apositive pole be connected at this electric capacity C
2Awith this diode D
8Anegative pole between, this diode D
7Anegative pole be connected to this electric capacity C
2Bwith this diode D
6Apositive pole between, this switch element Q
1Aconnect this voltage stabilizing didoe Z respectively
1Anegative pole and this resistance R
2Abetween, this diode D
5Anegative pole and this voltage stabilizing circuit, wherein, when the magnitude of voltage of this voltage stabilizing circuit is less than this voltage stabilizing didoe Z
1Anegative pole and this resistance R
2Abetween magnitude of voltage, this switch element Q
1Abe in opening, this first subcircuits supplies direct current, when the magnitude of voltage of voltage stabilizing circuit is greater than this voltage stabilizing didoe Z to this voltage stabilizing circuit
1Anegative pole and this resistance R
2Abetween magnitude of voltage, this first subcircuits stop to this voltage stabilizing circuit supply direct current.
8. auxiliary power circuit as claimed in claims 6 or 7, it is characterized in that, wherein, this voltage stabilizing circuit comprises a voltage stabilizing didoe Z further
2, a triode Q
3with a resistance R
3, this voltage stabilizing didoe Z
2negative pole connect the base stage of this triode, to keep base voltage constant, the emitter of this triode is connected with this output, the collector electrode of this triode and this resistance R
3one end connect, this resistance R
3the other end be connected to this voltage stabilizing didoe Z
2with this triode Q
3between, this voltage stabilizing didoe Z
2plus earth.
9. auxiliary power circuit as claimed in claim 8, it is characterized in that, this auxiliary power circuit comprises a filter capacitor C further
3, this filter capacitor is connected with this output, to improve the stability that this output is powered.
10. auxiliary power circuit as claimed in claim 1, it is characterized in that, this voltage stabilizing circuit is a serial regulating circuit.
The method of supplying power to of 11. 1 auxiliary power circuits, this auxiliary power circuit is applied in a power supply, to supply direct current to main control circuit, it is characterized in that, the method for supplying power to of this auxiliary power circuit comprises the following steps:
Step 1: the state detecting this auxiliary power circuit, if be in this power initiation state, then performs step 2, if be supplied to the half-wave DC electricity of this power supply in crest state, then perform step 3, if the half-wave DC being supplied to this power supply is electric in paddy state, then perform step 2;
Step 2: supply direct current by one first subcircuits of this auxiliary power circuit to a voltage stabilizing circuit of this auxiliary power circuit, wherein, this first subcircuits comprises a resistance R further
1, a resistance R
2, a diode D
5, an electric capacity C
2, a voltage stabilizing didoe Z
1with a switch element Q
1, this resistance R
1with this diode D
5series connection, and this resistance R
1one end connect an input, the other end connects this diode D
5positive pole, this voltage stabilizing didoe Z
1with this resistance R
2after series connection, then with this electric capacity C
2parallel connection, and then be connected to this diode D in the mode of series connection
5negative pole, this switch element Q
1connect this voltage stabilizing didoe Z respectively
1with this resistance R
2between, and this diode D
5negative pole and this voltage stabilizing circuit, wherein, this resistance R
2one end connect this diode D
5negative pole, this resistance R
2the other end connect this voltage stabilizing didoe Z
1negative pole, this voltage stabilizing didoe positive pole connection signal ground, this electric capacity C
2one end and this diode D
5negative pole connect, this electric capacity C
2the other end connect this signal ground;
Step 3: supply direct current by one second subcircuits of this auxiliary power circuit to this voltage stabilizing circuit of this auxiliary power circuit, wherein, described second subcircuits comprises a transformer T further
1with two diode D
2, D
3, this transformer T
1comprise an one-level coil T further
11with two secondary coil T
21, T
22, this transformer T
1this one-level coil T
11be connected with this input, this secondary coil T
21with this secondary coil T
22abutting end connect a signal ground, this secondary coil T
22with this secondary coil T
21abutting end connect this signal ground, this secondary coil T
21the other end with series connection mode connect this diode D
2positive pole, this secondary coil T
22the other end with series connection mode connect this diode D
3positive pole, this diode D
2negative pole and this diode D
3negative pole be connected with this voltage stabilizing circuit respectively.
The method of supplying power to of 12. auxiliary power circuits as claimed in claim 11, it is characterized in that, this step 2 is further comprising the steps:
Step 2.1: the relation detecting the magnitude of voltage of this voltage stabilizing circuit and a switch valve value of this first subcircuits, to determine whether this first subcircuits powers to the voltage stabilizing circuit of this auxiliary power circuit, if the magnitude of voltage of this voltage stabilizing circuit is less than this switch valve value of this first subcircuits, then perform step 2.2, if the magnitude of voltage of this voltage stabilizing circuit is equal to or greater than this switch valve value of this first subcircuits, then return step 1;
Step 2.2: the state detecting this auxiliary power circuit, if be in this power initiation state, then performs step 2.3, if it is electric in paddy state to be in the half-wave DC being supplied to this power supply, then performs step 2.4;
Step 2.3: supply direct current, to start power supply by this first subcircuits to this voltage stabilizing circuit of this auxiliary power circuit by an input of this auxiliary power circuit;
Step 2.4: supply direct current to this voltage stabilizing circuit of this auxiliary power circuit by the electric capacity in this first subcircuits, to maintain this voltage stabilizing circuit stable supply direct current.
The method of supplying power to of 13. auxiliary power circuits as claimed in claim 11, it is characterized in that, this step 3 is further comprising the steps:
Step 3.1: detect whether the half-wave DC electricity being supplied to this power supply is crest state, if the half-wave DC electricity being supplied to this power supply is in crest state, then performs step 3.2, if the half-wave DC electricity being supplied to this power supply is not in crest state, then returns step 1;
Step 3.2: supply direct current to this voltage stabilizing circuit of this auxiliary power circuit by one second subcircuits of this auxiliary power circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210239411.7A CN102739046B (en) | 2012-06-29 | 2012-06-29 | Auxiliary power supply circuit without electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210239411.7A CN102739046B (en) | 2012-06-29 | 2012-06-29 | Auxiliary power supply circuit without electrolytic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102739046A CN102739046A (en) | 2012-10-17 |
| CN102739046B true CN102739046B (en) | 2015-07-15 |
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|---|---|---|---|
| CN201210239411.7A Expired - Fee Related CN102739046B (en) | 2012-06-29 | 2012-06-29 | Auxiliary power supply circuit without electrolytic capacitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103066824B (en) * | 2012-12-19 | 2015-10-28 | 华南理工大学 | The accessory power supply started for Switching Power Supply and driving method thereof |
| CN110138226B (en) * | 2019-05-27 | 2021-02-02 | 同济大学 | Constant-voltage constant-current input switchable direct-current converter and method for submarine observation network |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107622A (en) * | 1993-06-10 | 1995-08-30 | Gec阿尔斯托姆T&D公司 | Device for supplying a voltage to an electronic circuit in particular an electronic circuit associated with a current sensor disposed on an electrical line |
| CN101018007A (en) * | 2006-02-10 | 2007-08-15 | 林福泳 | A high-power factor DC power |
| CN101106329A (en) * | 2006-07-12 | 2008-01-16 | 电力集成公司 | Method and apparatus for a high voltage power supply circuit |
| CN101527503A (en) * | 2008-03-08 | 2009-09-09 | 林福泳 | High-power factor correcting circuit |
| JP2010075034A (en) * | 2008-08-21 | 2010-04-02 | Panasonic Electric Works Co Ltd | Load controller, and load control system equipped with the same |
| CN202696469U (en) * | 2012-06-29 | 2013-01-23 | 卢金树 | Auxiliary power supply circuit without electrolytic capacitor |
-
2012
- 2012-06-29 CN CN201210239411.7A patent/CN102739046B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107622A (en) * | 1993-06-10 | 1995-08-30 | Gec阿尔斯托姆T&D公司 | Device for supplying a voltage to an electronic circuit in particular an electronic circuit associated with a current sensor disposed on an electrical line |
| CN101018007A (en) * | 2006-02-10 | 2007-08-15 | 林福泳 | A high-power factor DC power |
| CN101106329A (en) * | 2006-07-12 | 2008-01-16 | 电力集成公司 | Method and apparatus for a high voltage power supply circuit |
| CN101527503A (en) * | 2008-03-08 | 2009-09-09 | 林福泳 | High-power factor correcting circuit |
| JP2010075034A (en) * | 2008-08-21 | 2010-04-02 | Panasonic Electric Works Co Ltd | Load controller, and load control system equipped with the same |
| CN202696469U (en) * | 2012-06-29 | 2013-01-23 | 卢金树 | Auxiliary power supply circuit without electrolytic capacitor |
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|---|---|
| CN102739046A (en) | 2012-10-17 |
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