CN106972743A - Capacitor discharging circuit and modular power source and redundant system with the circuit - Google Patents
Capacitor discharging circuit and modular power source and redundant system with the circuit Download PDFInfo
- Publication number
- CN106972743A CN106972743A CN201710301450.8A CN201710301450A CN106972743A CN 106972743 A CN106972743 A CN 106972743A CN 201710301450 A CN201710301450 A CN 201710301450A CN 106972743 A CN106972743 A CN 106972743A
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- power source
- modular power
- resistance
- circuit
- capacitor discharging
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- 238000007599 discharging Methods 0.000 title claims abstract description 34
- 239000003990 capacitor Substances 0.000 title claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 36
- 238000000605 extraction Methods 0.000 claims abstract description 16
- 238000007689 inspection Methods 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 6
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
Capacitor discharging circuit and modular power source and redundant system with the circuit.The embodiment of the invention discloses a kind of capacitor discharging circuit, in modular power source, the modular power source to be used to be connected to a bus interface board pluggablely, and the capacitor discharging circuit includes extraction detection unit, switch element and the discharge cell being sequentially connected；Wherein, the extraction detection unit is used to detect whether the modular power source is extracted from the bus interface board, to control the break-make of the switch element；When the modular power source is transferred to, the switching means conductive, the discharge cell is discharged；When the modular power source is not transferred to, the switch element disconnects, and the discharge cell is open circuit.The capacitor discharging circuit that the embodiment of the present invention is provided adds protection circuit function, circuit is not produced more losses when working, and can prevent circuit burnout problem caused by contacing by mistake while guarantee circuit existing discharging function.
Description
Technical field
The present invention relates to field of circuit technology, more particularly to a kind of capacitor discharging circuit and the module electricity with the circuit
Source and redundant system.
Background technology
In high-power applications, there is a situation where that multiple modular power source parallel connections are used for extended power, especially in N+M redundancies
In system, and safeguard for convenience, modular power source can be changed in the case where not powering off, although or modular power source peace
Line is loaded onto, but perhaps to saves energy demand prediction only part start work, modular power source output can be powered；Due to output capacitance
In the presence of output is powered after modular power source is extracted, and is now zero load equivalent to modular power source, and output voltage can decline very
Slowly.For the modular power source of High voltage output, electric shock may be brought if people touches lead-out terminal accidentally
Danger.Therefore, being typically designed can consider to be used to discharge in output end increase discharge resistance, when modular power source is extracted, pass through electricity
Repid discharge is hindered to safe voltage, it is to avoid the danger of electric shock.Although which can avoid modular power source from pulling out to a certain extent
The danger of click is produced after going out, but whether start or shutdown, resistance is always in output end, and this certainly will just have the energy always
Loss, loss can be bigger especially under High voltage output, and in addition in order to ensure the velocity of discharge after extracting, the resistance set up is needed
Select resistance small, this, which results in long-term work, not only increases the reliability that loss also reduces circuit.
The content of the invention
The embodiment provides a kind of capacitor discharging circuit, modular power source and redundant system, it is intended to solves current
The loss that capacitor discharging circuit in modular power source is present is too high and the problem of low reliability.
In a first aspect, the embodiments of the invention provide a kind of capacitor discharging circuit, in modular power source, the module to be electric
Source is used to be connected to a bus interface board pluggablely, and the extraction detection that the capacitor discharging circuit includes being sequentially connected is single
Member, switch element and discharge cell；
Wherein, the extraction detection unit is used to detect whether the modular power source is extracted from the bus interface board,
To control the break-make of the switch element；
When the modular power source is transferred to, the switching means conductive, the discharge cell is discharged；
When the modular power source is not transferred to, the switch element disconnects, and the discharge cell is open circuit.
Its further technical scheme is：The discharge cell includes the first electric capacity and discharge resistance；The switch element bag
Include switching tube, voltage-regulator diode and voltage supply resistance；Wherein, the positive pole connection of described discharge resistance one end and electric capacity, the other end
It is connected by the switching tube of the switch element with electric capacity negative pole；Described voltage supply resistance one end connects power supply, and other end connection is steady
Press the negative pole and switching tube of diode, the voltage-regulator diode plus earth.
Its further technical scheme is：The discharge resistance is composed in parallel by second resistance and 3rd resistor.
Its further technical scheme is：The voltage supply resistance is by first resistor, the 4th resistance and the 5th resistance string joint group
Into.
Its further technical scheme is：The extraction detection unit includes the first detection unit, first detection unit
Including the first diode and the 6th resistance, one end of the 6th resistance is connected with the first pin, and the modular power source insertion is described total
During line interface plate, first pin is connected with the earth terminal on the bus interface board, the other end of the 6th resistance connection the
The negative pole of one diode.
Its further technical scheme is：The extraction detection unit also includes the second detection unit, and second detection is single
Member includes the second diode and the 7th resistance, and one end of the 7th resistance is connected with second pin, and the modular power source insertion is described
During bus interface board, the second pin is connected with the earth terminal on the bus interface board, the other end connection of the 7th resistance
The negative pole of second diode.
Its further technical scheme is：The switching tube is metal-oxide-semiconductor.
Its further technical scheme is：The switching tube is managed for N-MOS.
Second aspect, the embodiment of the present invention also provides a kind of modular power source, and an EBI is connected to for pluggable
On plate, the modular power source includes capacitor discharging circuit as above described in first aspect.
The third aspect, the embodiment of the present invention also provides a kind of redundant system, including bus interface board and it is pluggable even
It is connected to modular power source described in multiple as above second aspects on the bus interface board.
Compared with prior art, the present invention has the advantages that：
Capacitor discharging circuit can be turned off there is provided one kind in an embodiment of the present invention, extracting detection unit is used to detect
Whether the modular power source is extracted from bus interface board, to control the break-make of the switch element；, should when the modular power source is transferred to
Switching means conductive, the discharge cell is discharged；When modular power source is not transferred to, the switch element disconnects, and now discharges single
First open circuit.Embodiments of the invention detect whether whole circuit module is extracted due to setting extraction detection cell circuit, and then
The discharging function that turns off of the condenser network is realized, the reliability of circuit is also higher while reduction loss.
Brief description of the drawings
Technical scheme, is used required in being described below to embodiment in order to illustrate the embodiments of the present invention more clearly
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the functional-block diagram of capacitor discharging circuit provided in an embodiment of the present invention；
Fig. 2 is the physical circuit figure of capacitor discharging circuit provided in an embodiment of the present invention.
Fig. 3 illustrates the pluggable cooperation of modular power source and bus interface board in redundant system provided in an embodiment of the present invention
Relation.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
It should be appreciated that ought be in this specification and in the appended claims in use, term " comprising " and "comprising" be indicated
Described feature, entirety, step, operation, the presence of element and/or component, but be not precluded from one or more of the other feature, it is whole
Body, step, operation, element, component and/or its presence or addition for gathering.
It is also understood that the term used in this description of the invention is merely for the sake of the mesh for describing specific embodiment
And be not intended to limit the present invention.As used in description of the invention and appended claims, unless on
Other situations are hereafter clearly indicated, otherwise " one " of singulative, " one " and "the" are intended to include plural form.
Fig. 1 and Fig. 2 illustrate capacitor discharging circuit 1000 provided in an embodiment of the present invention.Fig. 3 illustrates implementation of the present invention
The pluggable matching relationship of modular power source 1010 and 1020 and bus interface board 1030 in the redundant system that example is provided.
Fig. 1 is referred to Fig. 3.Capacitor discharging circuit 1000 provided in an embodiment of the present invention, in modular power source 1020,
The modular power source 1020 is used to be connected to a bus interface board 1030 pluggablely, and the interface end of bus interface board 1030 includes
Positive pole 1031, negative pole 1032 and earth terminal 1033.The bus interface board 1030 can connect multiple module power supply circuits, realize many
Individual wired in parallel expands the effect of power to reach.
The capacitor discharging circuit 1000 of the present embodiment include be sequentially connected extraction detection unit 100, switch element 200 with
And discharge cell 300.Wherein, whether the extraction detection unit 100 is used to detect the modular power source 1020 from the bus interface board
Extracted on 1030, to control the break-make of the switch element 200.When modular power source 1020 is transferred to, the switch element 200 is turned on,
Discharge cell 300 is discharged；When modular power source 1020 is not transferred to, the switch element 200 disconnects, the open circuit of discharge cell 300
Do not discharge.Embodiments of the invention enter due to setting the extraction circuit of detection unit 100 to detect whether whole circuit module is extracted
And the discharging function that turns off of the condenser network 1000 is realized, the reliability of circuit is also higher while reduction loss.
Referring to Fig. 2, in this preferred embodiment, discharge cell 300 includes the first electric capacity C1 and discharge resistance 301；Switch
Unit 200 includes switching tube Q1, voltage-regulator diode ZD1 and voltage supply resistance 201；Wherein, described one end of discharge resistance 301 and the
One electric capacity C1 positive pole connection, the other end is connected with the first connection end 1 of the switching tube Q1, and the second of the switching tube Q1 connects
End 2 is connect to be connected and be grounded with the negative pole of the first electric capacity C1；Described one end of voltage supply resistance 201 and the first electric capacity C1 are just
Pole is connected, and the other end connects the 3rd connection end 3 of the switching tube and the negative pole of the voltage-regulator diode ZD1, the voltage stabilizing
Diode ZD1 plus earth.
As preferred, the discharge resistance 301 is composed in parallel by second resistance R2 and 3rd resistor R3.
As preferred, the voltage supply resistance 201 is by first resistor R1, the 4th resistance R4 and the 5th resistance R5 series connection groups
Into.
As preferred, the switching tube Q1 is metal-oxide-semiconductor.According to the characteristic of circuit of the present invention, selection N-MOS pipes are as opening
Close pipe Q1.Switching tube Q1 is that the grid of N-MOS pipes is connected between voltage supply resistance 201 and voltage-regulator diode ZD1 negative poles, together
When be also connected with extracting detection cell circuit 100, switching tube Q1 drain electrode (the first connection end 1) connects electricity by discharge resistance 301
Source, its source electrode (the second connection end 2) ground connection.As long as therefore grid (the 3rd connection end 3) voltage reaches threshold voltage, the switching tube
Q1 will be turned on.
Further, extracting detection unit 100 includes the first detection unit 101, and first detection unit 101 includes first
Diode D1 and the 6th resistance R6, first diode D1 positive pole are connected to switching tube Q1 the 3rd connection end 3, its negative pole
It is connected with the 6th resistance R6 one end, the 6th resistance R6 other end is connected with the first pin HS, modular power source 1020
When inserting bus interface board 1030, the first pin HS is connected with the earth terminal 1033 on the bus interface board 1030.Selectively,
The extraction detection unit also includes the second detection unit 102, and second detection unit 102 includes the electricity of the second diode D2 and the 7th
R7 is hindered, the second diode D2 positive pole is connected to one end of switching tube Q1 the 3rd connection end 3, its negative pole and the 7th resistance R7
It is connected, the 7th resistance R7 other end is connected with second pin HS1, and modular power source 1020 inserts the bus interface board 1030
When, second pin HS1 is connected prior to the first pin HS with the earth terminal 1033 on bus interface board 1030.Wherein second inspection
Survey unit 102 is optional circuit, and the first pin HS is used for doing insertion startup pin, i.e., just start mould after the first pin HS is grounded
Block, in golden finger interface application, referring to Fig. 3, the first pin HS may be designed to most short pin, only when other are managed
Pin is all contacted well, and the first pin HS can just be contacted, and now modular power source 1020 could start, but can so give electric discharge inspection
Measuring tape carrys out problem, when other pins such as both positive and negative polarity has been contacted, and in the time that the first pin HS is not in contact with, for above-mentioned electricity
Road thinks that now modular power source 1020 is to extract, but actual module power supply 1020 exports powered, and discharge resistance 301 is made
It can discharge, can produce loss can possibly even cause to burn.Therefore the second detection unit 102 of increase, sets the second detection unit
Second pin HS1 in 102 is pin most long in all pins, prior to the access of other pins, so both can guarantee that startup sequential,
Again will not false triggering discharge circuit, when modular power source 1020 is connected, second pin HS1 ends equivalent ground connection at first, then switching tube Q1
Grid level ground connection, switching tube Q1 is not turned on, and the open circuit of discharge cell 300 is not discharged, it is to avoid is produced loss and is even burnt；When module electricity
When source 1020 is extracted, second pin HS1 ends are finally hanging, and switching tube Q1 grid obtains voltage of voltage regulation, and switching tube Q1 conductings are put
First electric capacity C1 passes through second resistance R2 and 3rd resistor R3 repid discharges to safe voltage in electric unit 300, it is to avoid electric shock
It is dangerous.
As shown in figure 3, the embodiment of the present invention also provides a kind of power module 1020 and a kind of redundant system.Wherein, it is electric
Source module 1020 includes the capacitor discharging circuit 1000 and other interlock circuit units described by above-described embodiment.The redundancy
System includes bus interface board 1030 and pluggable the multiple modular power sources being connected on the bus interface board 1030.For
Power module and other circuit structures of redundant system are well known to those skilled in the art, and will not be repeated here.
Compared with prior art, the present invention has the advantages that：
Capacitor discharging circuit can be turned off there is provided one kind in an embodiment of the present invention, extracting detection unit is used to detect
Whether the modular power source is extracted from bus interface board, to control the break-make of the switch element；, should when the modular power source is transferred to
Switching means conductive, the discharge cell is discharged；When modular power source is not transferred to, the switch element disconnects, and now discharges single
First open circuit.Extract detection cell circuit detects whether whole circuit module is extracted by the way that whether port is grounded, should if extracting
Port is hanging, and switch element starts, and the electric charge that discharge cell starts on electric discharge, electric capacity is discharged by discharge resistance, is realized with this
The condenser network turns off discharging function, while the extraction detection unit also includes the second detection unit, with the first inspection
Unit identical structure is surveyed, but bus interface board is accessed prior to the first detection unit, it is ensured that normally starts sequential, while will not again
False triggering discharge circuit, the reliability of circuit is also higher while reduction loss.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, various equivalent modifications can be readily occurred in or replaced
Change, these modifications or substitutions should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain be defined.
Claims (10)
1. a kind of capacitor discharging circuit, in modular power source, the modular power source to connect for being connected to a bus pluggablely
On oralia, it is characterised in that the capacitor discharging circuit includes extraction detection unit, switch element and the electric discharge being sequentially connected
Unit；
Wherein, the extraction detection unit is used to detect whether the modular power source is extracted from the bus interface board, to control
Make the break-make of the switch element；
When the modular power source is transferred to, the switching means conductive, the discharge cell is discharged；
When the modular power source is not transferred to, the switch element disconnects, and the discharge cell is open circuit.
2. capacitor discharging circuit according to claim 1, it is characterised in that the discharge cell includes the first electric capacity and put
Resistance；The switch element includes switching tube, voltage-regulator diode and voltage supply resistance；Wherein, described discharge resistance one end with
The positive pole connection of first electric capacity, the other end is connected with the first connection end of the switching tube, and the second of the switching tube connects
End is connect to be connected and be grounded with the negative pole of first electric capacity；Described voltage supply resistance one end is connected with the positive pole of first electric capacity,
The other end connects the 3rd connection end of the switching tube and the negative pole of the voltage-regulator diode, the positive pole of the voltage-regulator diode
Ground connection.
3. capacitor discharging circuit according to claim 2, it is characterised in that the discharge resistance is by second resistance and the 3rd
Resistor coupled in parallel is constituted.
4. capacitor discharging circuit according to claim 2, it is characterised in that the voltage supply resistance is by first resistor, the 4th
Resistance and the 5th resistant series composition.
5. capacitor discharging circuit according to claim 2, it is characterised in that the extraction detection unit includes the first detection
Unit, first detection unit includes the first diode and the 6th resistance, and the positive pole of first diode is connected to described
3rd connection end of switching tube, its negative pole is connected with one end of the 6th resistance, the other end connection of the 6th resistance
There is the first pin, when the modular power source inserts the bus interface board, on first pin and the bus interface board
Earth terminal is connected.
6. capacitor discharging circuit according to claim 5, it is characterised in that the extraction detection unit also includes the second inspection
Unit is surveyed, second detection unit includes the second diode and the 7th resistance, and the positive pole of second diode is connected to institute
The 3rd connection end of switching tube is stated, its negative pole is connected with one end of the 7th resistance, the other end of the 7th resistance connects
Be connected to second pin, when the modular power source inserts the bus interface board, the second pin prior to first pin with
Earth terminal connection on the bus interface board.
7. capacitor discharging circuit according to claim 2, it is characterised in that the switching tube is metal-oxide-semiconductor, described first connects
It is drain electrode to connect end, and second connection end is source electrode, and the 3rd connection end is grid.
8. capacitor discharging circuit according to claim 7, it is characterised in that the switching tube is managed for enhanced N-MOS.
9. a kind of modular power source, a bus interface board is connected to for pluggable, it is characterised in that the modular power source bag
Include the capacitor discharging circuit as described in claim any one of 1-8.
10. a kind of redundant system, including bus interface board and pluggable the multiple modules being connected on the bus interface board
Power supply, the modular power source is the modular power source described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710301450.8A CN106972743B (en) | 2017-05-02 | 2017-05-02 | Capacitor discharge circuit, and module power supply and redundancy system with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710301450.8A CN106972743B (en) | 2017-05-02 | 2017-05-02 | Capacitor discharge circuit, and module power supply and redundancy system with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106972743A true CN106972743A (en) | 2017-07-21 |
| CN106972743B CN106972743B (en) | 2024-01-16 |
Family
ID=59330254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710301450.8A Active CN106972743B (en) | 2017-05-02 | 2017-05-02 | Capacitor discharge circuit, and module power supply and redundancy system with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106972743B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151374A (en) * | 2021-11-05 | 2022-03-08 | 山东云海国创云计算装备产业创新中心有限公司 | Fan control circuit and host |
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| CN101916983A (en) * | 2010-08-25 | 2010-12-15 | 海洋王照明科技股份有限公司 | Battery protection circuit and portable light |
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| CN103023369A (en) * | 2011-09-27 | 2013-04-03 | 台达电子企业管理（上海）有限公司 | Capacitance discharge circuit and power converter |
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| CN206807281U (en) * | 2017-05-02 | 2017-12-26 | 茂硕电源科技股份有限公司 | Capacitor discharging circuit and modular power source and redundant system with the circuit |
Family Cites Families (1)
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| CN206060710U (en) * | 2016-09-30 | 2017-03-29 | 深圳欧陆通电子有限公司 | And electromechanical source hot plug protection circuit and and electromechanical source |
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|---|---|---|---|---|
| US20110280053A1 (en) * | 2010-05-13 | 2011-11-17 | Nxp B.V. | smps having a safety arrangement, a method of operating a smps, and a controller therefor |
| CN101916983A (en) * | 2010-08-25 | 2010-12-15 | 海洋王照明科技股份有限公司 | Battery protection circuit and portable light |
| CN103023369A (en) * | 2011-09-27 | 2013-04-03 | 台达电子企业管理（上海）有限公司 | Capacitance discharge circuit and power converter |
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| CN114151374A (en) * | 2021-11-05 | 2022-03-08 | 山东云海国创云计算装备产业创新中心有限公司 | Fan control circuit and host |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106972743B (en) | 2024-01-16 |
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