CN108075673A - Multi-path common-ground rectification circuit and switching power supply - Google Patents
Multi-path common-ground rectification circuit and switching power supply Download PDFInfo
- Publication number
- CN108075673A CN108075673A CN201710850058.9A CN201710850058A CN108075673A CN 108075673 A CN108075673 A CN 108075673A CN 201710850058 A CN201710850058 A CN 201710850058A CN 108075673 A CN108075673 A CN 108075673A
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- multichannel
- switch module
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- access
- rectification
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- 230000005611 electricity Effects 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/064—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode with several outputs
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention provides a multi-path common-ground rectification circuit and a switching power supply, wherein the rectification circuit comprises a plurality of paths of full-wave rectification paths which are connected in parallel with the same alternating current power supply; and the switch module is arranged on any one or any one end of any one of the multiple paths of full-wave rectification paths and used for disconnecting the path where the switch module is located when the switch module is opened. Because the plurality of direct current output ends are grounded in common, the switch module is arranged at any one of the input end or the output end of the full-wave rectification passage, when the switch module is disconnected, because the full-wave rectification passage is connected in parallel with the same alternating current power supply, no current passes through the passage where the switch module is positioned when any one of two poles of the alternating current power supply is high potential, and the direct current module which is output by multiple paths in common ground can effectively control one or more paths to be powered off. The full power output of other paths can be ensured, so that the load can work more reliably, and the reliability of the circuit is ensured.
Description
Technical field
The present invention relates to power technique fields, and in particular to a kind of multichannel rectification circuit and Switching Power Supply altogether.
Background technology
Existing multiple-channel output rectification circuit is generally rectification circuit that multichannel as shown in Figure 1 does not export altogether (with two
It is illustrated exemplified by road).In multiple-channel output rectification circuit, it usually needs to wherein all the way or a few roads power off, for example, load
Equipment is in holding state, it is necessary to which the power supply of off device work, does not turn off the power supply of controller in equipment.
In the prior art, as shown in Figure 1, in multiple-channel output all the way or the power-off of a few roads is typically employed in and needs to power off
All the way or the input terminal of the rectification module on a few roads add in switch module 40, need power-off when, only need to disconnect switch can be real
Xian Gai roads power off.
However, multipath rectification circuit scheme sometimes for multichannel altogether, for example, the VCC windings of DC brushless motor are with opening
Powered-down source auxiliary winding is same winding, and when VDC is with another way rectification circuit, the rectification circuit reference ground of Switching Power Supply with
The rectification circuit reference ground of VDC is altogether.(being illustrated by taking two-way as an example), the input terminal of rectification module adds in all the way wherein
Switch module 40 when switch module 40 disconnects, charges to capacitance C1 and capacitance C2, and two-way has output, it is impossible to play disconnected
Open effect wherein all the way.
Therefore, one or more power-off in the rectification circuit that multichannel exports altogether how to be controlled to become urgently to be resolved hurrily
Problem.
The content of the invention
One or more in the rectification circuit that the technical problem to be solved in the present invention exports altogether in control multichannel is disconnected
Electricity.
For this purpose, according in a first aspect, an embodiment of the present invention provides a kind of multichannel rectification circuit altogether, including：It is parallel to
The multichannel full-wave rectification access of same AC power；Switch module is arranged in multichannel full-wave rectification access and arbitrary all the way or appoints
In the either end of the exchange side for multichannel of anticipating, for when switch module is opened, disconnecting the access where switch module.
Optionally, for being arranged between the AC power and the DC output end of the full-wave rectification access；It is described
Switch module is arranged on the either end of the exchange side of the full-bridge rectifier or full-wave bridge heap, in the switch module
During opening, the access of exchange side one end where disconnecting the switch module.
Optionally, switch module includes：Any one in relay circuit, semiconductor switch or mechanical switch.
Optionally, rectification circuit further includes multichannel altogether：Filter circuit is connected in parallel on the full-wave rectification access respectively
On DC output end.
Optionally, filter circuit includes at least one capacitance.
Optionally, rectification circuit further includes multichannel altogether：Diode, the direct current for being arranged on the full-wave rectification access are defeated
Between outlet and the switch module, the anode of the diode is connected with the switch module, the cathode of the diode with
The DC output end connection.
Optionally, rectification circuit further includes multichannel altogether：Resistance is separately positioned in multichannel full-wave rectification access.
Optionally, resistance includes：Thermistor, cement resistor, wire resistor and/or metal-back packaged resistance.
According to second aspect, an embodiment of the present invention provides a kind of Switching Power Supply, including：
Switching Power Supply main circuit and multichannel as described in above-mentioned first aspect any one rectification circuit altogether.
Rectification circuit provided in an embodiment of the present invention and Switching Power Supply, the multichannel including being parallel to same AC power are complete
Ripple rectifying path；Switch module is arranged in multichannel full-wave rectification access arbitrarily all the way or in the either end of arbitrary multichannel,
For when switch module is opened, disconnecting the access where switch module.Due to multiple DC output ends altogether, it is whole in all-wave
Either end in the input terminal or output terminal of logical circulation road sets switch module, when switch module disconnects, since all-wave is whole
Logical circulation road is parallel to same AC power, and any level-one in the two poles of the earth of AC power of the access where switch module is high electricity
During gesture, equal no current more can effectively control wherein that one or more is disconnected by, the DC Module that multichannel exports altogether
Electricity.It can ensure that other access total powers export, to enable the load to more reliable work, ensure the reliability of circuit.
Description of the drawings
Fig. 1 shows that the present invention can disconnect not two-way output rectification circuit figure altogether all the way in the prior art；
Fig. 2 shows that the present invention can disconnect common ground two-way output rectification circuit figure all the way in the prior art；
Fig. 3 shows in the embodiment of the present invention two-way rectification circuit figure altogether.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described reality
It is part of the embodiment of the present invention to apply example, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiments obtained without making creative work belong to what the present invention protected
Scope.In addition, term " first ", " second " etc. are only used for description purpose, and it is not intended that indicating or implying relatively important
Property.
An embodiment of the present invention provides a kind of rectification circuit, as shown in figure 3, the rectification circuit includes：It is parallel to same friendship
The multichannel full-wave rectification access 30 in galvanic electricity source；Switch module 40 is arranged in multichannel full-wave rectification access 30 and arbitrary all the way or appoints
On the DC side, that is, output terminal for multichannel of anticipating, for when switch module 40 is opened, disconnecting the access where switch module 40.
In specific embodiment, AC power 10 can be household electricity, can be commercial power, and alleged AC power 10 can wrap
First electrode AC-L1 and second electrode AC-N1 are included, wherein, the electric signal of first electrode AC-L1 is filtered for firewire electric signal
AC signal afterwards, the second motor AC-N1 are the AC signal after zero curve electric signal is filtered.In the present embodiment, it is alleged more
A DC output end 20 altogether includes at least two DC output ends, corresponds multiple full-wave rectification accesses 30 respectively.
In the present embodiment, switch module 40 can be arranged in the either end of 30 DC side of full-wave rectification access, specifically, switch
Module 40 can be arranged on one end of the DC side for the full-wave rectification access 30 all the way for needing to disconnect.It can also be each complete
The DC side of ripple rectifying path 30 is respectively provided with switch module 40.In the present embodiment, to be cost-effective, only needing what is disconnected
One end in DC side on access is configured, and when needing to disconnect road output, disconnects switch module 40.In this implementation
In example, for switch module 40 in the state of disconnection, the 40 corresponding DC output end no current of switch module currently disconnected is defeated
Go out.In the present embodiment, due to multiple DC output ends 20 altogether, output terminal can be ensured in multiple full-wave rectification accesses 30
It is exported for all-wave.
The operation principle of multichannel output rectification circuit altogether is as shown in figure 3, as shown in figure 3, the electricity of first electrode AC-L1
Gesture is higher than second electrode AC-N1, and the first path that electric current flows through is first electrode AC-L1, and the first diode D1, first is electric
The resistance load of RC1, the first capacitance C1, the 4th diode D4 (or the 8th diode D8) to second electrode AC-N1, first R1 obtains electric
Work.Second path is first electrode AC-L1, the 5th diode D5, second resistance RC2, the second capacitance C2, the 4th diode
D4 (or the 8th diode D8) to second electrode AC-N1, the second load R2 obtain electric work.The potential of second electrode AC-N1 is higher than
First electrode AC-L1, the 3rd path that electric current flows through be second electrode AC-N1, the second diode D2, first resistor RC1,
First capacitance C1, the 3rd diode D3 (or the 7th diode D7) to first electrode AC-L1, the first load R1 obtain electric work, the
One load R1 obtains electric work.4th path is second electrode AC-N1, the 6th diode D6, second resistance R2, the second capacitance
C2, the 3rd diode D3 (or the 7th diode D7) load R2 to first electrode AC-L1 second and obtain electric work.It is it is possible thereby to real
Existing two-way all-wave output.
By taking Fig. 3 as an example, filter circuit is road DC output end altogether, with switch module 40 in full-wave rectification access outlet,
When switch module 40 disconnects, and when the potential of first electrode AC-L1 is higher than second electrode AC-N1, current path is, the
One electrode A C-L1, the first diode D1, first resistor RC1, the first capacitance C1, the 4th diode D4 (or the 8th diode D8)
To second electrode AC-N1.Second capacitance C2 is flowed through without charging current, and the second load R2 no currents pass through.Second electrode AC-N1
Potential higher than first electrode AC-L1, current path is second electrode AC-N1, the second diode and D2, first resistor RC1,
First capacitance C1, the 3rd diode D3, first electrode AC-L1, can both ensure that the access all-wave of no switch module 40 was defeated
Go out, and can effectively control one or more power-off in the rectification circuit that multichannel exports altogether.Specifically, it may refer to
Table 1 illustratively shows switch module where C1 on access, under different on off states, the output shape of different accesses
Condition：
| Access where C1 | Access where C2 | |
| Switch module access | Total power exports | Total power exports |
| Switch module open circuit | It does not work | Total power exports |
Table 1
In the present embodiment, first resistor RC1 and second resistance RC2 is for limiting dash current, first resistor RC1 and
Second resistance RC2 can be thermistor or cement resistor and wire resistor, metal-back packaged resistance, in this reality
It applies in example, first resistor RC1 and second resistance RC2 can also be other high-power resistances.It can select to make according to actual conditions
With PTC (Positive Temperature CoeffiCient) resistance or NTC (Negative Temperature
CoeffiCient) resistance, in the present embodiment, the position of first resistor RC1 and second resistance RC2 are not limited to position shown in Fig. 3
It puts, any position that can be arranged between power supply and DC output end.In the present embodiment, the first capacitance C1 and
Two capacitance C2 are filter capacitor, for stabilizing the direct current of output.
In the present embodiment, on-off circuit module 40 can be relay, or semiconductor switch is (for example, controllable
Silicon), or mechanical switch.Due to relay be usually it is pressure-resistant for alternating voltage 250V, electric current 10A, and direct current is resistance to
It presses as 30V or so, when relay is arranged on DC side, the voltage of DC side is likely to be breached 310V or so, therefore, to expire
The resistance to pressure request of foot need to select the larger relay of resistance to DC voltage, cost be caused to increase, in an alternate embodiment of the invention, in relay
Diode D9 between device and DC output end is set, relay can be caused to select the relay of common resistance to pressure request, it can be with
It is cost-effective.
It is parallel to the multichannel full-wave rectification access of same AC power；Switch module is arranged on multichannel full-wave rectification access
In it is arbitrary all the way or in the either end of arbitrary multichannel, it is logical where switch module for when switch module is opened, disconnecting
Road.Due to multiple DC output ends altogether, the either end in the input terminal or output terminal of full-wave rectification access sets switch
Module, when switch module disconnects, since full-wave rectification path in parallel is in the access where same AC power, switch module
When any level-one is high potential in the two poles of the earth of AC power, equal no current can be with by, the DC Module that multichannel exports altogether
More effective control wherein one or more power-off.It can ensure that other access total powers export, to enable the load to more may be used
The work leaned on ensures the reliability of circuit.
The embodiment of the present invention additionally provides a kind of Switching Power Supply, including Switching Power Supply main circuit and above-described embodiment
The multichannel of description rectification circuit altogether.
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can not depart from this
Various modification can be adapted in the case of the spirit and scope of invention and modification, and such modifications and variations are each fallen within by appended right
It is required that within limited range.
Claims (9)
1. a kind of multichannel rectification circuit altogether, which is characterized in that including：
It is parallel to the multichannel full-wave rectification access of same AC power；
Switch module, be arranged in the multichannel full-wave rectification access it is arbitrary all the way or the DC side of arbitrary multichannel, in institute
When stating switch module opening, the access where the switch module is disconnected.
2. multichannel as described in claim 1 rectification circuit altogether, which is characterized in that the full-wave rectification access includes：
Full-wave rectification bridge or full-wave bridge heap, for be arranged on the DC output end of the AC power and full-wave rectification access it
Between；
The switch module is arranged on the full-bridge rectifier or full-wave bridge heap arbitrarily all the way or the DC side of arbitrary multichannel, is used for
When the switch module disconnects, the access of the switch module place all the way is disconnected.
3. multichannel as described in claim 1 rectification circuit altogether, which is characterized in that the switch module includes：
Any one in relay circuit, semiconductor switch or mechanical switch.
4. multichannel as described in claim 1 rectification circuit altogether, which is characterized in that further include：
Filter circuit is connected in parallel on respectively on the DC output end of the full-wave rectification access.
5. multichannel as claimed in claim 4 rectification circuit altogether, which is characterized in that the filter circuit includes at least one electricity
Hold.
6. multichannel as described in claim 1-5 any one rectification circuit altogether, which is characterized in that further include：
Diode is arranged between DC output end and the switch module of the full-wave rectification access, the diode
Anode is connected with the switch module, and the cathode of the diode is connected with the DC output end.
7. multichannel as described in claim 1-5 any one rectification circuit altogether, which is characterized in that further include：Resistance, respectively
It is arranged in multichannel full-wave rectification access.
8. multichannel as claimed in claim 7 rectification circuit altogether, which is characterized in that the resistance includes thermistor, cement
Resistance, wire resistor and/or metal-back packaged resistance.
9. a kind of Switching Power Supply, which is characterized in that including：
Switching Power Supply main circuit and
Multichannel as described in claim 1-8 any one rectification circuit altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710850058.9A CN108075673B (en) | 2017-09-19 | 2017-09-19 | Multi-path common-ground rectification circuit and switching power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710850058.9A CN108075673B (en) | 2017-09-19 | 2017-09-19 | Multi-path common-ground rectification circuit and switching power supply |
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| Publication Number | Publication Date |
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| CN108075673A true CN108075673A (en) | 2018-05-25 |
| CN108075673B CN108075673B (en) | 2020-02-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2014158378A (en) * | 2013-02-15 | 2014-08-28 | Omron Corp | Game machine |
| CN204376744U (en) * | 2014-12-15 | 2015-06-03 | 浙江朗科智能电气有限公司 | Reduce the circuit of electromagnetic oven power consumption |
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| CN206077036U (en) * | 2016-09-23 | 2017-04-05 | 付有红 | A kind of battery charger of aircraft power vehicle |
| CN206211498U (en) * | 2016-09-23 | 2017-05-31 | 付有红 | A kind of circuit system protection device of aircraft power vehicle |
| CN207530719U (en) * | 2017-09-19 | 2018-06-22 | 珠海格力电器股份有限公司 | Multi-path common-ground rectification circuit and switching power supply |
-
2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2114916U (en) * | 1992-01-11 | 1992-09-02 | 江西教育学院 | Dc ups power source |
| CN2131248Y (en) * | 1992-06-17 | 1993-04-28 | 李金良 | Adjustable multi-output ac-dc converter |
| CN1525632A (en) * | 2002-12-18 | 2004-09-01 | 因芬尼昂技术股份公司 | Method for generating direct voltage, circuit device and switch-mode adjusting monitoring module |
| CN101577484A (en) * | 2008-05-08 | 2009-11-11 | 海尔集团公司 | Power supply device of switch power supply of external convertible frequency air conditioner |
| CN201774467U (en) * | 2010-09-08 | 2011-03-23 | 张家港宏峰电器设备有限公司 | Million amp switch rectifier power supply system |
| US20150244282A1 (en) * | 2012-09-27 | 2015-08-27 | Daikin Industries, Ltd. | Direct ac power conversion device |
| JP2014158378A (en) * | 2013-02-15 | 2014-08-28 | Omron Corp | Game machine |
| CN204376744U (en) * | 2014-12-15 | 2015-06-03 | 浙江朗科智能电气有限公司 | Reduce the circuit of electromagnetic oven power consumption |
| CN204967646U (en) * | 2015-08-28 | 2016-01-13 | 成都通用整流电器研究所 | Looks copped wave type plasma power is moved with IGBT doubling of frequency to coal -fired ignition |
| CN206077036U (en) * | 2016-09-23 | 2017-04-05 | 付有红 | A kind of battery charger of aircraft power vehicle |
| CN206211498U (en) * | 2016-09-23 | 2017-05-31 | 付有红 | A kind of circuit system protection device of aircraft power vehicle |
| CN207530719U (en) * | 2017-09-19 | 2018-06-22 | 珠海格力电器股份有限公司 | Multi-path common-ground rectification circuit and switching power supply |
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|---|---|
| CN108075673B (en) | 2020-02-28 |
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