CN107093886A - It is a kind of to be embedded in solar powered network from the voltage security power supply circuit become in device - Google Patents
It is a kind of to be embedded in solar powered network from the voltage security power supply circuit become in device Download PDFInfo
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- CN107093886A CN107093886A CN201710500110.8A CN201710500110A CN107093886A CN 107093886 A CN107093886 A CN 107093886A CN 201710500110 A CN201710500110 A CN 201710500110A CN 107093886 A CN107093886 A CN 107093886A
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- voltage
- power supply
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- break
- comparator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/207—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage also responsive to under-voltage
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Abstract
Solar powered network is embedded in from the voltage security power supply circuit become in device the invention discloses a kind of, including：Logic judgment module and break-make control module；The input connection plant-grid connection terminal of logic judgment module, its output end connects the control end of break-make control module, and plant-grid connection terminal passes through break-make control module connection power supply lead-out terminal；When the supply voltage that plant-grid connection terminal is accessed is over-pressed or under-voltage, logic judgment module output high level；When the supply voltage that plant-grid connection terminal is accessed is normal, logic judgment module output low level；Break-make control module is turned on when control end accesses low level, and plant-grid connection terminal is powered by the break-make control module under conducting state to power supply lead-out terminal.In the present invention, when supply voltage is over-pressed or under-voltage, logic judgment module output high level, break-make control module is ended access terminal of cutting off the electricity supply and powered to power supply lead-out terminal, to avoid the work risk under electric voltage exception state, it is ensured that Electrical Safety.
Description
Technical field
The present invention relates to field of circuit technology, more particularly to a kind of solar powered network is embedded in from the voltage become in device
Safe power supply circuit.
Background technology
As summer extends, Global Temperature rise, solar energy is more and more sufficient, so that solar powered also enter hair at a high speed
The exhibition stage.In solar power supply circuit, with solar energy condenser plate with combining to form power supply from change device, from change device to solar energy power accumulating
Carry out inversion and alternating current is provided.But, because solar energy is unstable, it is difficult to ensure that from the stabilization for becoming device output voltage.If electric
Source electric voltage over press, then easily damage circuit element and load is dangerous big；If supply voltage is under-voltage, it is difficult to ensure that circuit
Normal work.So, supply voltage is detected, is essential unit in power supply circuit.
The content of the invention
The technical problem existed based on background technology, the present invention, which proposes one kind, can be embedded in solar powered network from change device
In voltage security power supply circuit.
It is proposed by the present invention it is a kind of be embedded in solar powered network from become device in voltage security power supply circuit, including：
Logic judgment module and break-make control module；The input connection plant-grid connection terminal of logic judgment module, the connection of its output end
The control end of break-make control module, plant-grid connection terminal passes through break-make control module connection power supply lead-out terminal；
When the supply voltage that plant-grid connection terminal is accessed is over-pressed or under-voltage, logic judgment module output high level；When
When the supply voltage of plant-grid connection terminal access is normal, logic judgment module output low level；Break-make control module is in control end
Turned on during access low level, plant-grid connection terminal is powered by the break-make control module under conducting state to power supply lead-out terminal.
It is preferred that, logic judgment module includes first comparator, the second comparator and logic sum gate；
The over-pressed reference value of the second input access of first comparator, its first input end connection plant-grid connection terminal；When
Second input terminal voltage value is less than first input end magnitude of voltage, first comparator output high level, conversely, output low level；
The second input connection plant-grid connection terminal of second comparator, its first input end accesses under-voltage reference value；When
Second input terminal voltage value is less than first input end magnitude of voltage, the second comparator output high level, conversely, output low level；
The output end of first comparator and the output end of the second comparator connect two inputs of logic sum gate respectively, patrol
Collect the remaining input of OR gate and access low level；The output end of logic sum gate connects logical as the output end of logic judgment module
The control end of disconnected control module.
It is preferred that, in addition to first resistor, its one end connection plant-grid connection terminal, the other end connects first comparator respectively
First input end and the second comparator the second input.
It is preferred that, break-make control module includes N-type triode and N-type transistor；The grounded emitter of triode, its current collection
Pole connects the grid of transistor；The grid of transistor is also connected with plant-grid connection terminal, and it drains and source electrode connects power supply and connect respectively
Enter terminal and power supply lead-out terminal.
It is preferred that, the grid of transistor connects plant-grid connection terminal by second resistance.
It is preferred that, trigger is connected between logic sum gate and triode, the excitation end connection logic sum gate of trigger
Output end, the base stage of the output end connecting triode of trigger.
In the present invention, when supply voltage is over-pressed or under-voltage, logic judgment module output high level, break-make control module
End access terminal of cutting off the electricity supply to power to power supply lead-out terminal, to avoid the work risk under electric voltage exception state, it is ensured that use
Electric safety.
Brief description of the drawings
Fig. 1 for it is proposed by the present invention it is a kind of be embedded in solar powered network from become device in voltage security power supply circuit connect
Map interlinking.
Embodiment
Reference picture 1, it is proposed by the present invention a kind of to be embedded in solar powered network and powered electricity from the voltage security become in device
Road, including：Logic judgment module and break-make control module；The input connection plant-grid connection terminal Vin of logic judgment module, its
Output end connects the control end of break-make control module, and plant-grid connection terminal Vin passes through break-make control module connection power supply output end
Son.
When the supply voltage that plant-grid connection terminal is accessed is over-pressed or under-voltage, logic judgment module output high level；When
When the supply voltage of plant-grid connection terminal access is normal, logic judgment module output low level；Break-make control module is in control end
Access low level when turn on, plant-grid connection terminal Vin by the break-make control module under conducting state to power supply lead-out terminal
Vout powers.
In this way, when supply voltage is over-pressed or under-voltage, logic judgment module output high level, the cut-off of break-make control module
The access terminal Vin that cuts off the electricity supply powers to power supply output terminal Vout, to avoid the work risk under electric voltage exception state, it is ensured that
Electrical Safety.
In present embodiment, break-make control module includes N-type triode Q1 and N-type transistor Q2；Triode Q1 transmitting
Pole is grounded, its colelctor electrode connection transistor Q2 grid；Transistor Q2 grid is also connected with plant-grid connection terminal Vin, and it drains
Connect plant-grid connection terminal Vin and power supply output terminal Vout respectively with source electrode.
When the access high level conducting of triode Q1 base stages, transistor Q2 grids are grounded by triode Q1, so that transistor
Q2 ends, and blocks plant-grid connection terminal Vin to be powered to power supply output terminal Vout；It is brilliant when triode Q1 access low level cut-offs
Body pipe Q2 grids obtain high level so as to turning on from plant-grid connection terminal Vin, the supply voltages of plant-grid connection terminal Vin accesses to
Power supply output terminal Vout normal power supply.
In present embodiment, logic judgment module includes first comparator OP1, the second comparator OP2 and logic sum gate
LO1。
The first comparator OP1 over-pressed reference value RF1 of the second input access, its first input end connection power access end
Sub- Vin；When the second input terminal voltage value is less than first input end magnitude of voltage, first comparator OP1 output high level, conversely, defeated
Go out low level.In this way, in present embodiment, by first comparator OP1 using over-pressed reference value RF1 as criterion, working as power supply
When voltage is excessive, first comparator OP1 output high level 1；If supply voltage is normal, first comparator OP1 exports low electricity
Flat 0.
Second comparator OP2 the second input connection plant-grid connection terminal Vin, its first input end accesses under-voltage reference
Value RF2；When the second input terminal voltage value is less than first input end magnitude of voltage, the second comparator OP2 output high level, conversely, defeated
Go out low level.In this way, in present embodiment, by the second comparator OP2 using under-voltage reference value RF2 as criterion, working as power supply
When voltage is too small, the second comparator OP2 output high level 1；If supply voltage is normal, the second comparator OP2 exports low electricity
Flat 0.
First comparator OP1 output end and the second comparator OP2 output end connect two of logic sum gate LO1 respectively
Input, the remaining inputs of logic sum gate LO1 access low level.In order to simplify in circuit, present embodiment, using 2 tunnels
The logic sum gate of input, it is connected after first comparator OP1 and the second comparator OP2 without remaining input.Logic sum gate LO1's
Output end connects the control end of break-make control module as the output end of logic judgment module.
So as to which during only logic sum gate LO1 output low levels, triode Q1 could end.And logic sum gate LO1 only exists
Voltage is normally that first comparator OP1 and the second comparator OP2 could export low level when exporting low level 0.That is, this implementation
In mode, when supply voltage is normal, triode Q1 cut-offs, transistor Q2 conductings；When supply voltage is over-pressed or under-voltage, three
Pole pipe Q1 is turned on, transistor Q2 cut-offs.Transistor Q2 working conditions are the working condition of break-make control module
In present embodiment, trigger, the excitation end connection of trigger are connected between logic sum gate LO1 and triode Q1
The output end of logic sum gate, the output end connecting triode Q1 of trigger base stage.In this way, by accessing trigger, can pass through
The high level excitation trigger output end of logic sum gate LO1 outputs exports the level of higher voltage high triode Q1 base stages.
The access of trigger, is conducive to expanding triode Q1 range of choice.
In present embodiment, in addition to first resistor R1 and second resistance R2.First resistor R1 one end connection power supply connects
Enter terminal Vin, the other end connects first comparator OP1 first input end and the second comparator OP2 the second input respectively.
Transistor Q2 grid passes through second resistance R2 connection plant-grid connection terminals Vin.First resistor R1 and second resistance R2 are played point
The effect of pressure, to ensure the work safety of circuit element.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (6)
1. a kind of be embedded in solar powered network from the voltage security power supply circuit become in device, it is characterised in that including：Logic
Judge module and break-make control module；The input connection plant-grid connection terminal (Vin) of logic judgment module, the connection of its output end
The control end of break-make control module, plant-grid connection terminal (Vin) passes through break-make control module connection power supply lead-out terminal；
When the supply voltage that plant-grid connection terminal is accessed is over-pressed or under-voltage, logic judgment module output high level；Work as power supply
When the supply voltage of access terminal access is normal, logic judgment module output low level；Break-make control module is accessed in control end
Turned on during low level, plant-grid connection terminal (Vin) by the break-make control module under conducting state to power supply lead-out terminal
(Vout) power.
2. solar powered network can be embedded in as claimed in claim 1 from the voltage security power supply circuit become in device, its feature
It is, logic judgment module includes first comparator (OP1), the second comparator (OP2) and logic sum gate (LO1)；
The over-pressed reference value (RF1) of the second input access of first comparator (OP1), its first input end connection power access end
Sub (Vin)；When the second input terminal voltage value is less than first input end magnitude of voltage, first comparator (OP1) exports high level, instead
It, exports low level；
The second input connection plant-grid connection terminal (Vin) of second comparator (OP2), its first input end accesses under-voltage reference
It is worth (RF2)；When the second input terminal voltage value is less than first input end magnitude of voltage, the second comparator (OP2) exports high level, instead
It, exports low level；
The output end of first comparator (OP1) and the output end of the second comparator (OP2) connect the two of logic sum gate (LO1) respectively
Individual input, logic sum gate (LO1) remaining input accesses low level；The output end of logic sum gate (LO1) is used as logic
The output end of judge module connects the control end of break-make control module.
3. solar powered network can be embedded in as claimed in claim 2 from the voltage security power supply circuit become in device, its feature
It is, in addition to first resistor (R1), its one end connection plant-grid connection terminal (Vin), the other end connects first comparator respectively
(OP1) first input end and the second input of the second comparator (OP2).
4. solar powered network is embedded in from the voltage security power supply circuit become in device as described in claim 1 or 2 or 3,
Characterized in that, break-make control module includes N-type triode (Q1) and N-type transistor (Q2)；The emitter stage of triode (Q1) connects
Ground, the grid of its colelctor electrode connection transistor (Q2)；The grid of transistor (Q2) is also connected with plant-grid connection terminal (Vin), and it leaks
Pole and source electrode connect plant-grid connection terminal (Vin) and power supply lead-out terminal (Vout) respectively.
5. solar powered network can be embedded in as claimed in claim 4 from the voltage security power supply circuit become in device, its feature
It is, the grid of transistor (Q2) connects plant-grid connection terminal (Vin) by second resistance (R2).
6. solar powered network can be embedded in as claimed in claim 4 from the voltage security power supply circuit become in device, its feature
It is, trigger is connected between logic sum gate (LO1) and triode (Q1), and the excitation end of trigger connects the defeated of logic sum gate
Go out end, the base stage of the output end connecting triode (Q1) of trigger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710500110.8A CN107093886A (en) | 2017-06-27 | 2017-06-27 | It is a kind of to be embedded in solar powered network from the voltage security power supply circuit become in device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710500110.8A CN107093886A (en) | 2017-06-27 | 2017-06-27 | It is a kind of to be embedded in solar powered network from the voltage security power supply circuit become in device |
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| Publication Number | Publication Date |
|---|---|
| CN107093886A true CN107093886A (en) | 2017-08-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710500110.8A Pending CN107093886A (en) | 2017-06-27 | 2017-06-27 | It is a kind of to be embedded in solar powered network from the voltage security power supply circuit become in device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611934A (en) * | 2017-09-26 | 2018-01-19 | 深圳市华星光电技术有限公司 | USB interface protection circuit and display device |
| CN109066573A (en) * | 2018-09-30 | 2018-12-21 | 张健 | A kind of new-energy automobile apparatus for protecting power supply |
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| CN200985359Y (en) * | 2006-10-27 | 2007-12-05 | 中国铝业股份有限公司 | Aluminium electrolytic tank controlling machine hardware over/under voltage protector |
| CN201349072Y (en) * | 2008-12-22 | 2009-11-18 | 南京邮电大学 | High-accuracy over-current protecting socket |
| CN201393179Y (en) * | 2009-01-12 | 2010-01-27 | 皇明太阳能集团有限公司 | Photovoltaic off-grid inverter |
| CN103683328A (en) * | 2013-12-13 | 2014-03-26 | 厦门市东港智能科技有限公司 | Automatic switching module and photovoltaic grid-connected and off-grid full-automatic power generation system |
| CN105977905A (en) * | 2016-07-04 | 2016-09-28 | 西安电子科技大学 | Over-current and over-voltage and under-voltage drive protection system based on SiC MOSFET |
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Patent Citations (6)
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| CN200985359Y (en) * | 2006-10-27 | 2007-12-05 | 中国铝业股份有限公司 | Aluminium electrolytic tank controlling machine hardware over/under voltage protector |
| CN201349072Y (en) * | 2008-12-22 | 2009-11-18 | 南京邮电大学 | High-accuracy over-current protecting socket |
| CN201393179Y (en) * | 2009-01-12 | 2010-01-27 | 皇明太阳能集团有限公司 | Photovoltaic off-grid inverter |
| CN103683328A (en) * | 2013-12-13 | 2014-03-26 | 厦门市东港智能科技有限公司 | Automatic switching module and photovoltaic grid-connected and off-grid full-automatic power generation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107611934A (en) * | 2017-09-26 | 2018-01-19 | 深圳市华星光电技术有限公司 | USB interface protection circuit and display device |
| CN109066573A (en) * | 2018-09-30 | 2018-12-21 | 张健 | A kind of new-energy automobile apparatus for protecting power supply |
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Application publication date: 20170825 |
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| RJ01 | Rejection of invention patent application after publication |