CN107887971A - A kind of alternating current-direct current automatic switchover electric power system - Google Patents
A kind of alternating current-direct current automatic switchover electric power system Download PDFInfo
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- CN107887971A CN107887971A CN201711206607.5A CN201711206607A CN107887971A CN 107887971 A CN107887971 A CN 107887971A CN 201711206607 A CN201711206607 A CN 201711206607A CN 107887971 A CN107887971 A CN 107887971A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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Abstract
The invention belongs to power supply circuit technical field, discloses a kind of alternating current-direct current automatic switchover electric power system.In the present invention, by using the alternating current-direct current automatic switchover electric power system for including ac power circuit and DC power-supply circuit, so that when ac power circuit works, modular converter will outside input alternating current carry out decompression transformation after output to rectification filtering module and control module, rectification filtering module carries out rectifying and wave-filtering processing to the alternating current after decompression to export direct current to using electric loading；Control module controls DC charging module to close according to the alternating current after decompression；When ac power circuit does not work, control module is closed, and the first DC voltage that DC charging module exports according to direct current supply module turns on, and the second direct voltage output extremely is used into electric loading, solve existing electric power system to exist when civil power powers off, the problem of can not being power supply for electrical equipment.
Description
Technical field
The present invention relates to a kind of alternating current-direct current automatic switchover electric power system.
Background technology
At present, the electrical equipment such as TV uses ac power supply system, and ac power supply system passes through filtering, voltage conversion etc.
Method is converted to 220V civil powers the operating voltage needed for the electrical equipments such as TV, and outputs this to electrical equipment, to realize
The power supply of the electrical equipments such as TV.But in the area of the power supply instabilities such as some remote mountain areas, due to often having a power failure, exchange
Electric power system inputs without civil power, and then causes ac power supply system can not provide the electricity needed for work for electrical equipments such as TVs
Pressure.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of alternating current-direct current automatic switchover electric power system.
The present invention is achieved by the following technical programs.
A kind of alternating current-direct current automatic switchover electric power system provided by the invention, including ac power circuit, the Alternating Current Power Supply
Circuit includes modular converter and rectification filtering module, and the modular converter is connected with the rectification filtering module, the rectification filter
Ripple module is connected with electric loading, it is characterised in that and the alternating current-direct current automatic switchover electric power system also includes DC power-supply circuit,
The DC power-supply circuit includes：Direct current supply module, control module and DC charging module；
The positive input terminal of the direct current supply module is connected with the positive pole of the supplying cell of outside, the direct current supply module
Negative input end be connected with the negative pole of the supplying cell, the first output end of the direct current supply module and the DC charging
The control terminal connection of module, the first input end of the second output end of the direct current supply module and the DC charging module connect
Connect, the second input end grounding of the DC charging module, the output end of the DC charging module is connected with described with electric loading
Connect, the output end of the control module is connected with the control terminal of the DC charging module, the input termination of the control module
Ground, the control terminal of the control module are connected with the output end of the modular converter；
The direct current that the direct current supply module provides according to the supplying cell exports the first DC voltage and respectively
Two DC voltages to the DC charging module control terminal and first input end；When the ac power circuit works, institute
State after the alternating current of outside input is carried out decompression transformation by modular converter and export to the rectification filtering module and the control mould
Block, the rectification filtering module are born to output direct current to the electricity consumption after the alternating current progress rectifying and wave-filtering processing after decompression
Carry；The control module controls the DC charging module to close according to the alternating current after the decompression；When the Alternating Current Power Supply
When circuit does not work, the control module is closed, and the DC charging module turns on according to first DC voltage, and by institute
State the second direct voltage output and use electric loading to described.
The control module includes DC conversion unit and control unit；The input of the DC conversion unit is described
The control terminal of control module, the output end of the DC conversion unit and the control terminal of described control unit connect, the control
The output end of unit is the output end of the control module, and the input of described control unit is the input of the control module
End；Alternating current after the decompression is converted to the 3rd DC voltage by the DC conversion unit, and described control unit is according to institute
The conducting of the 3rd DC voltage is stated, and controls the DC charging module to close according to conducting state.
The DC conversion unit includes the first commutation diode, current-limiting resistance, the first filter capacitor, the second filtered electrical
Appearance, the first electric capacity, voltage-stabiliser tube and the first divider resistance and the second divider resistance, described control unit include first switching element
With the first pressure limiting resistance；The anode of first commutation diode is the input of the DC conversion unit, and described first is whole
The negative electrode of stream diode is connected with the first end of the current-limiting resistance, the second end of the current-limiting resistance and first filtered electrical
The first end of appearance, the first end of second filter capacitor, the of the negative electrode of the voltage-stabiliser tube and first divider resistance
One end connects, the first end of the second end of first divider resistance and first electric capacity, the of second divider resistance
The control terminal of one end and the first switching element connects, and the control terminal of the first switching element is described control unit
Control terminal, the second end of first filter capacitor, the second end of second filter capacitor, the anode of the voltage-stabiliser tube, institute
State the second end of the first electric capacity and the second end of second divider resistance and be connected to the input of the first switching element altogether,
The input of the first switching element be described control unit input, the output end of the first switching element with it is described
The first end connection of first pressure limiting resistance, the second end of the first pressure limiting resistance are the output end of described control unit.
The direct current supply module includes interface unit, protection location, the 3rd filter capacitor, DC output unit；It is described
The first interface of interface unit is the positive input terminal of the direct current supply module, and the second interface of the interface unit is described straight
Flow the negative input end of power supply module, the first input end of the protection location and the first interface and the 3rd filtered electrical
The first end connection of appearance, the first end ground connection of the 3rd filter capacitor, the second input of the protection location and described the
Two interfaces connect, the second end of the 3rd filter capacitor input with DC output unit and the protection location respectively
Output end connection, the first output end of the DC output unit is the first output end of the direct current supply module, described
Second output end of DC output unit is the second output end of the direct current supply module；The interface unit is by the power supply
For the direct current electricity output that battery is provided to the protection location, the direct current that the protection location provides the supplying cell is defeated
Go out to the 3rd filter capacitor, the 3rd filter capacitor and exported after the direct current that the supplying cell provides is filtered
To DC output unit, the DC output unit first DC voltage and described the according to filtered direct current electricity output
Two DC voltages are to the DC charging module.
The protection location includes anti-reverse diode and fuse, and the DC output unit includes the 3rd partial pressure electricity
Resistance, the 4th divider resistance and the second electric capacity；The first end of the fuse is the second input of the protection location, described
Second end of fuse and the negative electrode of the anti-reverse diode connect the output end to form the protection location altogether, described anti-reverse
The anode of diode is the first input end of the protection location, and the first end of the 3rd divider resistance is the direct current output
The input of unit and the second output end, the second end of the 3rd divider resistance and the first end of the 4th divider resistance with
And the first end of second electric capacity connects the first output end to form the DC output unit altogether, the 4th divider resistance
Second end and the second end of second electric capacity are connected to ground altogether.
The DC charging module includes switch element and charhing unit；The control terminal of the switch element is the direct current
The control terminal of charging module, the input of the switch element are the second input of the DC charging module, the switch
The output end of unit is connected with the control terminal of the charhing unit, and the input of the charhing unit is the DC charging module
First input end, the output end of the charhing unit is the output end of the DC charging module；When the control module is opened
Qi Shi, the switch element are closed；When the control module is closed, the switch element is led according to first DC voltage
It is logical, and control the charhing unit to open, so that the charhing unit bears second direct voltage output to the electricity consumption
Carry.
The switch element includes second switch element, diode and the second pressure limiting resistance, the second switch element
Control terminal is the control terminal of the switch element, and the input of the second switch element is the input of the switch element,
The output end of the second switch element is connected with the negative electrode of the diode, the anode of the diode and second pressure limiting
The first end connection of resistance, the second end of the second pressure limiting resistance are the output end of the switch element.
The charhing unit includes the 3rd switch element, the 3rd electric capacity, first resistor, the 4th filter capacitor and protection electricity
Resistance, the input of the first end of the 3rd electric capacity, the first end of the first resistor and the 3rd switch element connect altogether
The input of the charhing unit is formed, the second end of the 3rd electric capacity is connected to described altogether with the second end of the first resistor
The control terminal of 3rd switch element, the control terminal of the 3rd switch element are the control terminal of the charhing unit, the described 4th
The first end of the first end of filter capacitor and the protective resistance connects the output end to form the charhing unit, the 4th filter altogether
Second end of ripple electric capacity is connected to ground altogether with the second end of the protective resistance.
The second switch element is the second NMOS tube, and the 3rd switch element is PMOS, the 2nd NOS pipes
Grid, drain electrode and source electrode are respectively control terminal, input and the output end of the second switch element, the PMOS
Grid, drain electrode and source electrode are respectively control terminal, output end and the input of the 3rd switch element.
The first switching element is the first NMOS tube, and grid, drain electrode and the source electrode of first NMOS tube are respectively
Control terminal, input and the output end of the first switching element.
The beneficial effects of the present invention are：Cut automatically using the alternating current-direct current including ac power circuit and DC power-supply circuit
Change electric power system so that when ac power circuit works, after the alternating current of outside input is carried out decompression transformation by modular converter
To rectification filtering module and control module, rectification filtering module carries out rectifying and wave-filtering to the alternating current after decompression and handled with defeated for output
Go out direct current to using electric loading；Control module controls DC charging module to close according to the alternating current after decompression；Work as Alternating Current Power Supply
When circuit does not work, control module is closed, and the first DC voltage that DC charging module exports according to direct current supply module turns on,
And by the second direct voltage output to electric loading is used, solve existing electric power system and exist when civil power powers off, can not be to use
The problem of electric equipment is powered.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
10- ac power circuits, 100- modular converters, 102- rectification filtering modules, 20- DC power-supply circuits, 200- are straight
Flow power supply module, 202- control modules, 204- DC charging modules, 30- electric loadings, 40- supplying cells.
Embodiment
Be described further below technical scheme, but claimed scope be not limited to it is described.
A kind of alternating current-direct current automatic switchover electric power system, including ac power circuit, the ac power circuit include conversion
Module and rectification filtering module, the modular converter are connected with the rectification filtering module, the rectification filtering module and electricity consumption
Load connection, it is characterised in that the alternating current-direct current automatic switchover electric power system also includes DC power-supply circuit, the direct current supply
Circuit includes：Direct current supply module, control module and DC charging module；
The positive input terminal of the direct current supply module is connected with the positive pole of the supplying cell of outside, the direct current supply module
Negative input end be connected with the negative pole of the supplying cell, the first output end of the direct current supply module and the DC charging
The control terminal connection of module, the first input end of the second output end of the direct current supply module and the DC charging module connect
Connect, the second input end grounding of the DC charging module, the output end of the DC charging module is connected with described with electric loading
Connect, the output end of the control module is connected with the control terminal of the DC charging module, the input termination of the control module
Ground, the control terminal of the control module are connected with the output end of the modular converter；
The direct current that the direct current supply module provides according to the supplying cell exports the first DC voltage and respectively
Two DC voltages to the DC charging module control terminal and first input end；When the ac power circuit works, institute
State after the alternating current of outside input is carried out decompression transformation by modular converter and export to the rectification filtering module and the control mould
Block, the rectification filtering module are born to output direct current to the electricity consumption after the alternating current progress rectifying and wave-filtering processing after decompression
Carry；The control module controls the DC charging module to close according to the alternating current after the decompression；When the Alternating Current Power Supply
When circuit does not work, the control module is closed, and the DC charging module turns on according to first DC voltage, and by institute
State the second direct voltage output and use electric loading to described.
The control module includes DC conversion unit and control unit；The input of the DC conversion unit is described
The control terminal of control module, the output end of the DC conversion unit and the control terminal of described control unit connect, the control
The output end of unit is the output end of the control module, and the input of described control unit is the input of the control module
End；Alternating current after the decompression is converted to the 3rd DC voltage by the DC conversion unit, and described control unit is according to institute
The conducting of the 3rd DC voltage is stated, and controls the DC charging module to close according to conducting state.
The DC conversion unit includes the first commutation diode, current-limiting resistance, the first filter capacitor, the second filtered electrical
Appearance, the first electric capacity, voltage-stabiliser tube and the first divider resistance and the second divider resistance, described control unit include first switching element
With the first pressure limiting resistance；The anode of first commutation diode is the input of the DC conversion unit, and described first is whole
The negative electrode of stream diode is connected with the first end of the current-limiting resistance, the second end of the current-limiting resistance and first filtered electrical
The first end of appearance, the first end of second filter capacitor, the of the negative electrode of the voltage-stabiliser tube and first divider resistance
One end connects, the first end of the second end of first divider resistance and first electric capacity, the of second divider resistance
The control terminal of one end and the first switching element connects, and the control terminal of the first switching element is described control unit
Control terminal, the second end of first filter capacitor, the second end of second filter capacitor, the anode of the voltage-stabiliser tube, institute
State the second end of the first electric capacity and the second end of second divider resistance and be connected to the input of the first switching element altogether,
The input of the first switching element be described control unit input, the output end of the first switching element with it is described
The first end connection of first pressure limiting resistance, the second end of the first pressure limiting resistance are the output end of described control unit.
The direct current supply module includes interface unit, protection location, the 3rd filter capacitor, DC output unit；It is described
The first interface of interface unit is the positive input terminal of the direct current supply module, and the second interface of the interface unit is described straight
Flow the negative input end of power supply module, the first input end of the protection location and the first interface and the 3rd filtered electrical
The first end connection of appearance, the first end ground connection of the 3rd filter capacitor, the second input of the protection location and described the
Two interfaces connect, the second end of the 3rd filter capacitor input with DC output unit and the protection location respectively
Output end connection, the first output end of the DC output unit is the first output end of the direct current supply module, described
Second output end of DC output unit is the second output end of the direct current supply module；The interface unit is by the power supply
For the direct current electricity output that battery is provided to the protection location, the direct current that the protection location provides the supplying cell is defeated
Go out to the 3rd filter capacitor, the 3rd filter capacitor and exported after the direct current that the supplying cell provides is filtered
To DC output unit, the DC output unit first DC voltage and described the according to filtered direct current electricity output
Two DC voltages are to the DC charging module.
The protection location includes anti-reverse diode and fuse, and the DC output unit includes the 3rd partial pressure electricity
Resistance, the 4th divider resistance and the second electric capacity；The first end of the fuse is the second input of the protection location, described
Second end of fuse and the negative electrode of the anti-reverse diode connect the output end to form the protection location altogether, described anti-reverse
The anode of diode is the first input end of the protection location, and the first end of the 3rd divider resistance is the direct current output
The input of unit and the second output end, the second end of the 3rd divider resistance and the first end of the 4th divider resistance with
And the first end of second electric capacity connects the first output end to form the DC output unit altogether, the 4th divider resistance
Second end and the second end of second electric capacity are connected to ground altogether.
The DC charging module includes switch element and charhing unit；The control terminal of the switch element is the direct current
The control terminal of charging module, the input of the switch element are the second input of the DC charging module, the switch
The output end of unit is connected with the control terminal of the charhing unit, and the input of the charhing unit is the DC charging module
First input end, the output end of the charhing unit is the output end of the DC charging module；When the control module is opened
Qi Shi, the switch element are closed；When the control module is closed, the switch element is led according to first DC voltage
It is logical, and control the charhing unit to open, so that the charhing unit bears second direct voltage output to the electricity consumption
Carry.
The switch element includes second switch element, diode and the second pressure limiting resistance, the second switch element
Control terminal is the control terminal of the switch element, and the input of the second switch element is the input of the switch element,
The output end of the second switch element is connected with the negative electrode of the diode, the anode of the diode and second pressure limiting
The first end connection of resistance, the second end of the second pressure limiting resistance are the output end of the switch element.
The charhing unit includes the 3rd switch element, the 3rd electric capacity, first resistor, the 4th filter capacitor and protection electricity
Resistance, the input of the first end of the 3rd electric capacity, the first end of the first resistor and the 3rd switch element connect altogether
The input of the charhing unit is formed, the second end of the 3rd electric capacity is connected to described altogether with the second end of the first resistor
The control terminal of 3rd switch element, the control terminal of the 3rd switch element are the control terminal of the charhing unit, the described 4th
The first end of the first end of filter capacitor and the protective resistance connects the output end to form the charhing unit, the 4th filter altogether
Second end of ripple electric capacity is connected to ground altogether with the second end of the protective resistance.
The second switch element is the second NMOS tube, and the 3rd switch element is PMOS, the 2nd NOS pipes
Grid, drain electrode and source electrode are respectively control terminal, input and the output end of the second switch element, the PMOS
Grid, drain electrode and source electrode are respectively control terminal, output end and the input of the 3rd switch element.
The first switching element is the first NMOS tube, and grid, drain electrode and the source electrode of first NMOS tube are respectively
Control terminal, input and the output end of the first switching element.
Claims (10)
1. a kind of alternating current-direct current automatic switchover electric power system, including ac power circuit, the ac power circuit includes modulus of conversion
Block and rectification filtering module, the modular converter are connected with the rectification filtering module, and the rectification filtering module is born with electricity consumption
Carry connection, it is characterised in that the alternating current-direct current automatic switchover electric power system also includes DC power-supply circuit, the direct current supply electricity
Road includes：Direct current supply module, control module and DC charging module；
The positive input terminal of the direct current supply module is connected with the positive pole of the supplying cell of outside, and the direct current supply module is born
Input is connected with the negative pole of the supplying cell, the first output end of the direct current supply module and the DC charging module
Control terminal connection, the second output end of the direct current supply module is connected with the first input end of the DC charging module,
Second input end grounding of the DC charging module, the output end of the DC charging module are connected with described with electric loading,
The output end of the control module is connected with the control terminal of the DC charging module, the input end grounding of the control module,
The control terminal of the control module is connected with the output end of the modular converter；
The direct current that the direct current supply module provides according to the supplying cell exports the first DC voltage and second straight respectively
Voltage is flowed to the control terminal and first input end of the DC charging module；When the ac power circuit works, described turn
Change the mold after the alternating current of outside input is carried out decompression transformation by block and export to the rectification filtering module and the control module, institute
State output direct current after rectification filtering module carries out rectifying and wave-filtering processing to the alternating current after decompression and use electric loading to described；It is described
Control module controls the DC charging module to close according to the alternating current after the decompression；When the ac power circuit not work
When making, the control module is closed, and the DC charging module turns on according to first DC voltage, and straight by described second
Stream voltage output uses electric loading to described.
2. alternating current-direct current automatic switchover electric power system according to claim 1, it is characterised in that the control module includes straight
Stream-converting unit and control unit；The input of the DC conversion unit be the control module control terminal, the direct current
The output end of converting unit and the control terminal of described control unit connect, and the output end of described control unit is the control module
Output end, the input of described control unit is the input of the control module；The DC conversion unit is by the drop
Alternating current after pressure is converted to the 3rd DC voltage, and described control unit turns on according to the 3rd DC voltage, and according to leading
Logical state controls the DC charging module to close.
3. alternating current-direct current automatic switchover electric power system according to claim 2, it is characterised in that the DC conversion unit bag
Include the first commutation diode, current-limiting resistance, the first filter capacitor, the second filter capacitor, the first electric capacity, voltage-stabiliser tube and first point
Piezoresistance and the second divider resistance, described control unit include first switching element and the first pressure limiting resistance；First rectification
The anode of diode is the input of the DC conversion unit, the negative electrode of first commutation diode and the current-limiting resistance
First end connection, the first end of the second end of the current-limiting resistance and first filter capacitor, second filter capacitor
First end, the voltage-stabiliser tube negative electrode and first divider resistance first end connection, first divider resistance
Second end and the control of the first end, the first end and the first switching element of second divider resistance of first electric capacity
End processed connection, the control terminal of the first switching element are the control terminal of described control unit, the of first filter capacitor
Two ends, the second end of second filter capacitor, the anode of the voltage-stabiliser tube, the second end of first electric capacity and described
Second end of two divider resistances is connected to the input of the first switching element altogether, and the input of the first switching element is institute
The input of control unit is stated, the output end of the first switching element is connected with the first end of the first pressure limiting resistance, institute
The second end for stating the first pressure limiting resistance is the output end of described control unit.
4. alternating current-direct current automatic switchover electric power system according to claim 1, it is characterised in that the direct current supply module bag
Include interface unit, protection location, the 3rd filter capacitor, DC output unit；The first interface of the interface unit is described straight
The positive input terminal of power supply module is flowed, the second interface of the interface unit is the negative input end of the direct current supply module, described
The first input end of protection location is connected with the first end of the first interface and the 3rd filter capacitor, the 3rd filter
The first end ground connection of ripple electric capacity, the second input of the protection location are connected with the second interface, the 3rd filtered electrical
The second end held is connected with the input of DC output unit and the output end of the protection location respectively, the direct current output
First output end of unit is the first output end of the direct current supply module, and the second output end of the DC output unit is
Second output end of the direct current supply module；The interface unit is by the direct current electricity output that the supplying cell is provided to institute
State protection location, the protection location by the direct current electricity output that the supplying cell provides to the 3rd filter capacitor, it is described
Output is defeated to DC output unit, the direct current after the direct current that the supplying cell provides is filtered by the 3rd filter capacitor
Go out unit the first DC voltage and second DC voltage to the DC charging according to filtered direct current electricity output
Module.
5. alternating current-direct current automatic switchover electric power system according to claim 4, it is characterised in that the protection location includes anti-
Reversal connection diode and fuse, the DC output unit include the 3rd divider resistance, the 4th divider resistance and the second electric capacity；
The first end of the fuse be the protection location the second input, the second end of the fuse and described anti-reverse two
The negative electrode of pole pipe connects the output end to form the protection location altogether, and the anode of the anti-reverse diode is the protection location
First input end, the first end of the 3rd divider resistance are the input and the second output end of the DC output unit, institute
The second end and the first end of the 4th divider resistance and the first end of second electric capacity for stating the 3rd divider resistance connect altogether
Form the first output end of the DC output unit, the second end of the 4th divider resistance and the second of second electric capacity
End is connected to ground altogether.
6. alternating current-direct current automatic switchover electric power system according to claim 1, it is characterised in that the DC charging module bag
Include switch element and charhing unit；The control terminal of the switch element be the DC charging module control terminal, the switch
The input of unit is the second input of the DC charging module, the output end of the switch element and the charhing unit
Control terminal connection, the input of the charhing unit is the first input end of the DC charging module, the charhing unit
Output end be the DC charging module output end；When the control module is opened, the switch element is closed；Work as institute
When stating control module closing, the switch element turns on according to first DC voltage, and controls the charhing unit to open,
So that second direct voltage output is used electric loading by the charhing unit to described.
7. alternating current-direct current automatic switchover electric power system according to claim 6, it is characterised in that the switch element includes the
Two switch elements, diode and the second pressure limiting resistance, the control terminal of the second switch element are the control of the switch element
End, the input of the second switch element are the input of the switch element, the output end of the second switch element with
The negative electrode connection of the diode, the anode of the diode are connected with the first end of the second pressure limiting resistance, and described second
Second end of pressure limiting resistance is the output end of the switch element.
8. alternating current-direct current automatic switchover electric power system according to claim 7, it is characterised in that the charhing unit includes the
Three switch elements, the 3rd electric capacity, first resistor, the 4th filter capacitor and protective resistance, the first end of the 3rd electric capacity, institute
State the first end of first resistor and the input of the 3rd switch element connects the input to form the charhing unit altogether, institute
State the second end of the 3rd electric capacity and the second end of the first resistor and be connected to the control terminal of the 3rd switch element altogether, described the
The control terminal of three switch elements is the control terminal of the charhing unit, the first end of the 4th filter capacitor and the protection electricity
The first end of resistance connects the output end to form the charhing unit, the second end and the protective resistance of the 4th filter capacitor altogether
The second end be connected to ground altogether.
9. alternating current-direct current automatic switchover electric power system according to claim 8, it is characterised in that the second switch element is
Second NMOS tube, the 3rd switch element are PMOS, and grid, drain electrode and the source electrode of the 2nd NOS pipes are respectively institute
Control terminal, input and the output end of second switch element are stated, grid, drain electrode and the source electrode of the PMOS are respectively institute
State control terminal, output end and the input of the 3rd switch element.
10. alternating current-direct current automatic switchover electric power system according to claim 3, it is characterised in that the first switching element
For the first NMOS tube, grid, drain electrode and the source electrode of first NMOS tube be respectively the control terminal of the first switching element,
Input and output end.
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| CN201711206607.5A CN107887971A (en) | 2017-11-27 | 2017-11-27 | A kind of alternating current-direct current automatic switchover electric power system |
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| CN201711206607.5A CN107887971A (en) | 2017-11-27 | 2017-11-27 | A kind of alternating current-direct current automatic switchover electric power system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203027014U (en) * | 2012-12-24 | 2013-06-26 | Tcl通力电子（惠州）有限公司 | Dual-power supply circuit and audio-visual player |
| CN105207347A (en) * | 2015-09-11 | 2015-12-30 | 珠海格力电器股份有限公司 | Multi-output power supply supplying power uninterruptedly |
| CN105490376A (en) * | 2016-01-28 | 2016-04-13 | 合肥惠科金扬科技有限公司 | AC-DC automatic switching power supply system |
| CN205509643U (en) * | 2016-01-28 | 2016-08-24 | 合肥惠科金扬科技有限公司 | Alternating current -direct current automatic switch -over power supply system |
| CN205646962U (en) * | 2016-04-08 | 2016-10-12 | 国家康复辅具研究中心 | Alternating current -direct current conversion charging circuit |
| CN205753632U (en) * | 2016-06-28 | 2016-11-30 | 重庆宁来科贸有限公司 | The power supply that the alternating current-direct current of a kind of reliable charging automatically switches |
-
2017
- 2017-11-27 CN CN201711206607.5A patent/CN107887971A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203027014U (en) * | 2012-12-24 | 2013-06-26 | Tcl通力电子（惠州）有限公司 | Dual-power supply circuit and audio-visual player |
| CN105207347A (en) * | 2015-09-11 | 2015-12-30 | 珠海格力电器股份有限公司 | Multi-output power supply supplying power uninterruptedly |
| CN105490376A (en) * | 2016-01-28 | 2016-04-13 | 合肥惠科金扬科技有限公司 | AC-DC automatic switching power supply system |
| CN205509643U (en) * | 2016-01-28 | 2016-08-24 | 合肥惠科金扬科技有限公司 | Alternating current -direct current automatic switch -over power supply system |
| CN205646962U (en) * | 2016-04-08 | 2016-10-12 | 国家康复辅具研究中心 | Alternating current -direct current conversion charging circuit |
| CN205753632U (en) * | 2016-06-28 | 2016-11-30 | 重庆宁来科贸有限公司 | The power supply that the alternating current-direct current of a kind of reliable charging automatically switches |
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Application publication date: 20180406 |