CN207782674U - Multichannel rectification circuit and Switching Power Supply altogether - Google Patents
Multichannel rectification circuit and Switching Power Supply altogether Download PDFInfo
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- CN207782674U CN207782674U CN201721204786.4U CN201721204786U CN207782674U CN 207782674 U CN207782674 U CN 207782674U CN 201721204786 U CN201721204786 U CN 201721204786U CN 207782674 U CN207782674 U CN 207782674U
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Abstract
The utility model provides a kind of multichannel, and rectification circuit and Switching Power Supply, wherein rectification circuit include altogether：It is parallel at least single-phase conduction path and at least full-wave rectification access all the way all the way of same AC power；Switch module is arranged at least single-phase conduction path block and/or at least exchange side of full-wave rectification access all the way all the way, for when opening, disconnecting the access where switch module.Altogether due to multiple DC output ends, in full-wave rectification access and/or the input terminal of single-phase conduction path, switch module is set, when switch module disconnects, due to, full-wave rectification access and/or single-phase conduction path are parallel to same AC power, when any level-one is high potential in the two poles of the earth of AC power, equal no current passes through, and the DC Module that multichannel exports altogether more can effectively control wherein one or more power-off for access where switch module.
Description
Technical field
The present invention relates to power technique fields, and in particular to arrives 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 for road).In multiple-channel output rectification circuit, it usually needs to wherein all the way or a few roads power off, for example, load set
For the power supply in standby mode, needing off device to work, the power supply of controller in equipment is not turned off.
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 switch module 40 is added in the input terminal of the rectification module on a few roads, when needing power-off, only need to disconnect switch and can be realized
The road powers off.
However, multipath rectification circuit scheme sometimes for multichannel altogether, for example, the VCC windings of DC brushless motor with open
Powered-down source auxiliary winding is same winding, and when VDC another way rectification circuits, 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 addition of rectification module is opened all the way wherein
Module 40 is closed, when switch module 40 disconnects, to capacitance C1 and capacitance C2 chargings, two-way has output, cannot play disconnection
Effect wherein all the way.
Therefore, one or more power-off how controlled in the rectification circuit that multichannel exports altogether is asked as urgently to be resolved hurrily
Topic.
Invention content
One or more power-off of the technical problem to be solved in the present invention in the rectification circuit that control multichannel exports altogether.
For this purpose, according in a first aspect, an embodiment of the present invention provides a kind of multichannel rectification circuits altogether, including：It is parallel to
At least single-phase conduction path and at least full-wave rectification access all the way all the way of same AC power；Switch module is arranged at least
Single-phase conduction path block and/or at least all the way on any one input terminal of full-wave rectification access all the way, in switch module
When opening, the access where switch module is disconnected.
Optionally, single-phase conduction path includes：First single-phase conduction device, the anode and AC power of the first single-phase conduction device
A pole connection, the DC output end of the cathode and single-phase conduction path of the first single-phase conduction device；Second single-phase conduction device, second
The anode of single-phase conduction device is connect with another pole of AC power, the cathode of the second single-phase conduction device and the first single-phase conduction device
Cathode connects；The input terminal of anode or the second single-phase conduction device in the first single-phase conduction device is arranged in switch module, for opening
When closing module opening, the access where the second conduction device of access or disconnection where the first single-phase conduction device of disconnection.
Optionally, single-phase conduction device includes：The anode of at least one diode, diode is connect with power supply, diode
Cathode is the DC output end of single-phase conduction path.
Optionally, full-wave rectification bridge or full-wave bridge heap, are arranged the DC output end in AC power and full-wave rectification access
Between；Any one input terminal in full-wave rectification bridge or full-wave bridge heap is arranged in switch module, is used for when switch module is opened,
The access of input terminal where disconnecting switch module.
Optionally, any one in relay circuit, semiconductor switch or mechanical switch.
Optionally, rectification circuit further includes multichannel altogether：Filter circuit, respectively with the DC output end of single-phase conduction path
It is in parallel with the DC output end of full-wave rectification access.
Optionally, filter circuit includes at least one capacitance.
Optionally, rectification circuit further includes multichannel altogether：Resistance, is separately positioned on single-phase conduction path and full-wave rectification is logical
Lu Zhong.
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 Supplies, including：
The rectification circuit of Switching Power Supply main circuit and such as above-mentioned first aspect any one.
Multichannel provided in an embodiment of the present invention rectification circuit and Switching Power Supply altogether, including it is parallel to same AC power
At least single-phase conduction path and at least full-wave rectification access all the way all the way；Switch module, setting is at least single-phase conducting is logical all the way
Road block and/or at least exchange side of full-wave rectification access all the way, for when opening, disconnecting the access where switch module.By
Altogether in multiple DC output ends, switch module is set in full-wave rectification access and/or the input terminal of single-phase conduction path, is opening
When closing module disconnection, since full-wave rectification access and/or single-phase conduction path are parallel to same AC power, switch module institute
Access in the two poles of the earth of AC power any level-one be high potential when, equal no current passes through, the direct current that multichannel exports altogether
Module more can effectively control wherein one or more power-off.
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 the present invention can disconnect total ground two-way output rectification circuit figure all the way in the prior art；
Fig. 3 shows the rectification circuit figure of two-way altogether in the embodiment of the present invention；
Fig. 4 shows the rectification circuit figure of two-way altogether in the embodiment of the present invention.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relative importance.
An embodiment of the present invention provides a kind of multichannel rectification circuits altogether, as shown in figure 3, the rectification circuit includes：
It is parallel at least single-phase conduction path 50 and at least full-wave rectification access 60 all the way all the way of same AC power；It opens
Module 40 is closed, is arranged at least any one of single-phase conduction path 50 and/or at least full-wave rectification access 60 all the way are defeated all the way
Enter on end, for when the switch module 40 is opened, disconnecting the access where switch module 40.In the particular embodiment,
AC power is alternating current, can be commercial power specifically, can be household electricity, alleged AC power may include the
One electrode A C-L1 and second electrode AC-N1, wherein the electric signal of first electrode AC-L1 is after firewire electric signal is filtered
AC signal, the second motor AC-N1 are the AC signal after zero curve electric signal is filtered.In the present embodiment, alleged multiple total
The DC output end 20 on ground includes at least two DC output ends, can correspond single-phase conduction path 50 respectively and all-wave is whole
Logical circulation road 60.In the present embodiment, switch module 40 can be arranged in single-phase conduction path 50 and/or full-wave rectification access 60
Input terminal, specifically, switch module 40 can be arranged in the single-phase conduction path 50 all the way and/or full-wave rectification for needing to disconnect
The input terminal of access 60.It can also be in the input terminal of each single-phase conduction path 50 and full-wave rectification access 60.It is needing to disconnect
When the road exports, switch module 40 is disconnected.In the present embodiment, in the state of disconnection, what is currently disconnected opens switch module 40
Close the output of 40 corresponding DC output end no current of module.In the present embodiment, altogether due to multiple DC output ends 20, all-wave
Rectifying path 60, it is ensured that output end exports for all-wave.
It is parallel at least single-phase conduction path and at least full-wave rectification access all the way all the way of same AC power；Switching molding
Block is arranged at least single-phase conduction path block and/or at least exchange side of full-wave rectification access all the way all the way, for opening
When, disconnect the access where switch module.Altogether due to multiple DC output ends, in full-wave rectification access and/or single-phase conducting
Switch module is arranged in the input terminal of access, when switch module disconnects, due to full-wave rectification access and/or single-phase conduction path
Be parallel to same AC power, the access where switch module in the two poles of the earth of AC power any level-one be high potential when,
No current passes through, and the DC Module that multichannel exports altogether more can effectively control wherein one or more power-off.
In an alternate embodiment of the invention, at least one single-phase conduction path 50, specifically may refer to circuit shown in Fig. 3
Figure, wherein the single-phase conduction path 50 can utilize in full-wave rectification access 60 in parallel therewith with the single-phase conduction path
50 opposite single-phase turning circuits form full bridge rectifiers, may include first single-phase leading in the single-phase conduction path 50
The anode of logical device and the second single-phase conduction device, the first single-phase conduction device is connect with first electrode AC-L1, the first single-phase conduction device
Cathode DC output end connection corresponding with single-phase conduction path 50；Anode and the second electrode AC-N1 of second single-phase conduction device
Connection, the cathode of the second single-phase conduction device are connect with the cathode of the first single-phase conduction device, and in the present embodiment, switch module 40 can
The anode of anode or the second single-phase conduction device in the first single-phase conduction device is arranged.When switch module 40 disconnects, the is disconnected
One single-phase conduction device or the second single-phase conduction device.In the present embodiment, single-phase conduction device can be single diode, can be string
Multiple diodes of connection.For example, as shown in figure 3, the potential of first electrode AC-L1 is higher than second electrode AC-N1, electric current flows through
First path be first electrode AC-L1, the first diode D1, first resistor RC1, the first capacitance C1, the 6th diode D6 is extremely
Second electrode AC-N1, the first load R1 work once electrifieds.Second path is first electrode AC-L1, third diode D3, the second electricity
RC2 is hindered, the second capacitance C2, the 6th diode D6 to second electrode AC-N1, second loads R2 work once electrifieds.Second electrode AC-
The potential of N1 be higher than first electrode AC-L1, the third path that electric current flows through be second electrode AC-N1, the second diode D2,
First resistor RC1, the first capacitance C1, the 5th diode D5 to first electrode AC-L1, first load R1 work once electrifieds, and first is negative
Carry R1 work once electrifieds.4th path is, second electrode AC-N1, the 4th diode D4, second resistance R3, the second capacitance C2, the 5th
Diode D5 to first electrode AC-L1 second loads R2 work once electrifieds.It is possible thereby to realize that two-way all-wave exports.
By taking Fig. 3 as an example, filter circuit is road DC output end altogether, wherein the rectification module for being all the way is that single-phase conducting is logical
Road, another way are full-wave rectification access, in embodiment, or multichannel, in the present embodiment, with switch module 40 complete
Wave rectifying path input terminal, when switch module 40 disconnects, and the potential of first electrode AC-L1 be higher than second electrode AC-N1 when,
Its current path is that first electrode AC-L1, the first diode D1, first resistor RC1, the first capacitance C1, the 6th diode D6 is extremely
Second electrode AC-N1.C2 no currents flow through.The potential of second electrode AC-N1 is higher than first electrode AC-L1, no guiding path.It can
More effectively to control one or more power-off in the rectification circuit that multichannel exports altogether.
In the present embodiment, first resistor RC1 and second resistance RC2 is for limiting dash current, first resistor RC1 and the
Two resistance RC2 can be that thermistor may be cement resistor and wire resistor, metal-back packaged resistance, in the present embodiment
In, first resistor RC1 and second resistance RC2 can also be other high-power resistances.It can be selected to use PTC according to actual conditions
(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. 4, can be arranged
Any position between power supply and DC output end.In the present embodiment, the first capacitance C1 and the second capacitance C2 is filtering
Capacitance, the direct current for stabilizing output.In the present embodiment, switch module 40 can be relay and its control circuit,
It can be semiconductor switch (for example, silicon-controlled) and its control circuit, or mechanical switch.
After ensureing one or more disconnection in rectification circuit, the circuit being not turned off can normally export all-wave,
In an alternate embodiment of the invention, the output end in rectification circuit can also be arranged in switch module 40, such as the switch of dotted portion in Fig. 3
Shown in module 40, in the present embodiment, when switch module 40 disconnects, and the potential of first electrode AC-L1 is higher than second electrode
When AC-N1, current path is, first electrode AC-L1, the first diode D1, first resistor RC1, the first capacitance C1, the six or two
Pole pipe D6 to second electrode AC-N1.C2 no currents flow through.When the potential of second electrode AC-N1 is higher than first electrode AC-L1, electricity
Flow path is second electrode AC-N1, the second diode D2, first resistor RC1, the first capacitance C1, the 5th diode D5 to first
Electrode A C-L1.So as to realize that the first capacitance C1 has electric current to flow through in the positive half period of electric current and the negative half-cycle of electric current,
The output end is exported with all-wave.
In optionally embodiment, the output of full-wave rectification access can be arranged in full-wave rectification access 60, switch module 40
End ensures to be all-wave output per road DC output end.In the present embodiment, full-wave rectification access 60 can be full-wave rectification bridge
Or full-wave bridge heap, the two poles of the earth connection of the ac input end and power supply of full-wave rectification bridge or full-wave bridge heap, full-wave rectification bridge or all-wave
The DC output end connection corresponding with full-wave rectification access of the output end of bridge heap.Wherein, full-wave bridge heap can be four diodes
The full-wave rectifying circuit being linked to be, it is specific as shown in figure 4, Fig. 4 illustratively shows that two-way has full-wave rectification access, switch
The output end in full-wave rectification access is illustratively arranged in module 40, and switch module 40 can also be arranged in full-wave rectification access
Input terminal.When switch module 40 is connected, since access where capacitance C3 is full-wave rectification circuit, all-wave is exported, third is negative
R3 work once electrifieds are carried, the access where C4 is similarly full-wave rectification circuit, exports all-wave, the 4th load R4 work once electrifieds
When switch module 40 disconnects, since access where capacitance C3 is full-wave rectification circuit, all-wave is exported, third load R3 obtains electric
Work.Path is without guiding path where C4.The rectification circuit of multichannel altogether is not interfere with each other, and does not interfere with the work of another way.
The stability of circuit can be greatlyd improve in this way, while also ensuring 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 are retouched
The rectification circuit stated.
Although the embodiments of the invention are described in conjunction with the attached drawings, but those skilled in the art can not depart from this hair
Various modifications and variations can be made in the case of bright spirit and scope, and such modifications and variations are each fallen within by appended claims
Within limited range.
Claims (10)
1. a kind of multichannel rectification circuit altogether, which is characterized in that including：
It is parallel at least single-phase conduction path and at least full-wave rectification access all the way all the way of same AC power；
Switch module is arranged at least any one of single-phase conduction path and/or at least full-wave rectification access all the way are defeated all the way
Enter on end, for when the switch module disconnects, disconnecting the access where the switch module.
2. multichannel as described in claim 1 rectification circuit altogether, which is characterized in that the single-phase conduction path includes：
The anode of first single-phase conduction device, the first single-phase conduction device is connect with a pole of the AC power, the first single-phase conducting
The DC output end of the cathode of device and single-phase conduction path；
The anode of second single-phase conduction device, the second single-phase conduction device is connect with another pole of the AC power, and second single-phase leads
The cathode of logical device is connect with the cathode of the described first single-phase conduction device；
The input terminal of anode or the second single-phase conduction device in the described first single-phase conduction device is arranged in the switch module, is used for
When the switch module is opened, the access where the second conduction device of access or disconnection where the first single-phase conduction device of disconnection.
3. multichannel as claimed in claim 2 rectification circuit altogether, which is characterized in that the single-phase conduction device includes：
The anode of at least one diode, diode is connect with the power supply, and the cathode of diode is the single-phase conduction path
DC output end.
4. 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, be arranged the DC output end of the AC power and the full-wave rectification access it
Between；
Any one input terminal in the full-wave rectification bridge or full-wave bridge heap is arranged in the switch module, in the switch
When module is opened, the access of input terminal where disconnecting the switch module.
5. 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.
6. multichannel as described in claim 1 rectification circuit altogether, which is characterized in that further include：
Filter circuit, respectively with the DC output end of the DC output end of the single-phase conduction path and the full-wave rectification access
It is in parallel.
7. multichannel as claimed in claim 6 rectification circuit altogether, which is characterized in that the filter circuit includes at least one electricity
Hold.
8. multichannel as described in claim 1 rectification circuit altogether, which is characterized in that further include：Resistance is separately positioned on described
In single-phase conduction path and the full-wave rectification access.
9. multichannel as claimed in claim 8 rectification circuit altogether, which is characterized in that the resistance includes thermistor, cement
Resistance, wire resistor and/or metal-back packaged resistance.
10. a kind of Switching Power Supply, which is characterized in that including：
Switching Power Supply main circuit and
Multichannel as described in any one of claims 1-9 rectification circuit altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721204786.4U CN207782674U (en) | 2017-09-19 | 2017-09-19 | Multichannel rectification circuit and Switching Power Supply altogether |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721204786.4U CN207782674U (en) | 2017-09-19 | 2017-09-19 | Multichannel rectification circuit and Switching Power Supply altogether |
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| Publication Number | Publication Date |
|---|---|
| CN207782674U true CN207782674U (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721204786.4U Active CN207782674U (en) | 2017-09-19 | 2017-09-19 | Multichannel rectification circuit and Switching Power Supply altogether |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612370A (en) * | 2017-09-19 | 2018-01-19 | 珠海格力电器股份有限公司 | Multichannel rectification circuit and Switching Power Supply altogether |
-
2017
- 2017-09-19 CN CN201721204786.4U patent/CN207782674U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612370A (en) * | 2017-09-19 | 2018-01-19 | 珠海格力电器股份有限公司 | Multichannel rectification circuit and Switching Power Supply altogether |
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