CN206807281U - 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
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- CN206807281U CN206807281U CN201720475436.5U CN201720475436U CN206807281U CN 206807281 U CN206807281 U CN 206807281U CN 201720475436 U CN201720475436 U CN 201720475436U CN 206807281 U CN206807281 U CN 206807281U
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- power source
- modular power
- resistance
- capacitor discharging
- discharging circuit
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- 238000007599 discharging Methods 0.000 title claims abstract description 33
- 239000003990 capacitor Substances 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 37
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 238000007689 inspection Methods 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 6
- 239000000284 extract Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 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
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model embodiment discloses a kind of capacitor discharging circuit, for in modular power source, the modular power source is 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 utility model embodiment 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
It the utility model is related to field of circuit technology, more particularly to a kind of capacitor discharging circuit and the mould with the circuit
Block power supply and redundant system.
Background technology
In high-power applications, that multiple modular power sources are in parallel be present and be 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 extraction, pass through electricity
Repid discharge is hindered to safe voltage, avoids 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, for resistance always in output end, 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 needs
Select resistance small, this, which results in long-term work, not only increases the reliability that loss also reduces circuit.
Utility model content
Embodiment of the present utility model provides a kind of capacitor discharging circuit, modular power source and redundant system, it is intended to solves
The capacitor discharging circuit in modular power source is existing at present is lost the problem of too high and reliability is low.
In a first aspect, the utility model embodiment provides a kind of capacitor discharging circuit, in modular power source, the mould
Block power supply is used to be connected to a bus interface board pluggablely, and the capacitor discharging circuit includes the extraction detection being sequentially connected
Unit, 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 of described discharge resistance one end and electric capacity connects, 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 resistant series 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, described in the modular power source inserts
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 utility model embodiment also provide a kind of modular power source, for pluggable are connected to a bus
On interface board, the modular power source includes the as above capacitor discharging circuit described in first aspect.
The third aspect, the utility model embodiment also provide a kind of redundant system, including bus interface board and pluggable
Ground is connected to modular power source described in multiple as above second aspects on the bus interface board.
Compared with prior art, the utility model has the advantages that：
In embodiment of the present utility model, there is provided one kind can turn off capacitor discharging circuit, extract detection unit and be used for
Detect whether the modular power source is extracted from bus interface board, to control the break-make of the switch element；When the modular power source is transferred to
When, the switching means conductive, the discharge cell is discharged；When modular power source is not transferred to, the switch element disconnects, and now puts
Electric unit open circuit.Embodiment of the present utility model extracts detection cell circuit to detect whether whole circuit module pulls out due to setting
Go out, and then realize the discharging function that turns off of the condenser network, the reliability of circuit is also higher while reducing loss.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment technical scheme, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the utility model, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the functional-block diagram for the capacitor discharging circuit that the utility model embodiment provides；
Fig. 2 is the physical circuit figure for the capacitor discharging circuit that the utility model embodiment provides.
Fig. 3 illustrates the pluggable of modular power source and bus interface board in the redundant system of the utility model embodiment offer
Matching relationship.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that described embodiment is the utility model part of the embodiment, rather than whole implementation
Example.Based on the embodiment in the utility model, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment obtained, belong to the scope of the utility model protection.
It should be appreciated that ought be in this specification and in the appended claims in use, term " comprising " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but it is not precluded from one or more of the other feature, whole
Body, step, operation, element, component and/or its presence or addition for gathering.
It is also understood that in this utility model term used in the description merely for the sake of description specific embodiment
Purpose and be not intended to limit the utility model.As used in the utility model specification and appended book
Like that, unless context clearly indicates other situations, otherwise " one " of singulative, "one" and "the" are intended to include plural number
Form.
Fig. 1 and Fig. 2 illustrates the capacitor discharging circuit 1000 of the utility model embodiment offer.Fig. 3 illustrates this practicality
The pluggable cooperation of modular power source 1010 and 1020 and bus interface board 1030 is closed in the redundant system that new embodiment provides
System.
Fig. 1 is referred to Fig. 3.The capacitor discharging circuit 1000 that the utility model embodiment provides, for modular power source
In 1020, the modular power source 1020 is used to be connected to a bus interface board 1030 pluggablely, and bus interface board 1030 connects
Mouth end includes positive pole 1031, negative pole 1032 and earth terminal 1033.The bus interface board 1030 can connect multiple modular power source electricity
Road, multiple wired in parallel are realized to reach the effect of expansion power.
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 turns 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.Embodiment of the present utility model extracts the circuit of detection unit 100 to detect whether whole circuit module pulls out due to setting
Go out, and then realize the discharging function that turns off of the condenser network 1000, the reliability of circuit is also higher while reducing 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 are 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 connects, 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 preferable, the discharge resistance 301 is composed in parallel by second resistance R2 and 3rd resistor R3.
As preferable, the voltage supply resistance 201 is by first resistor R1, the 4th resistance R4 and the 5th resistance R5 series connection groups
Into.
As preferable, the switching tube Q1 is metal-oxide-semiconductor.According to the characteristic of the utility model circuit, N-MOS pipes are selected to make
For switching tube Q1.Switching tube Q1 be N-MOS pipes grid be connected to voltage supply resistance 201 and voltage-regulator diode ZD1 negative poles it
Between, while be also connected with extracting detection cell circuit 100, switching tube Q1 drain electrode (the first connection end 1) is connected by discharge resistance 301
Power supply is connect, its source electrode (second connection end 2) ground connection.As long as therefore grid (the 3rd connection end 3) voltage reaches threshold voltage, this is opened
Closing pipe Q1 will turn 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 starts 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 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, the second detection unit is set
Second pin HS1 in 102 is pin most long in all pins, is accessed prior to other pins, so both can guarantee that startup sequential,
Again will not false triggering discharge circuit, when modular power source 1020 connects, 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, and is avoided producing loss or even is 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, switching tube Q1 conductings, puts
First electric capacity C1 avoids electric shock by second resistance R2 and 3rd resistor R3 repid discharges to safe voltage in electric unit 300
It is dangerous.
As shown in figure 3, the utility model embodiment also provides a kind of power module 1020 and a kind of redundant system.Its
In, power module 1020 includes the capacitor discharging circuit 1000 and other interlock circuit units described by above-described embodiment.Institute
Stating redundant system includes bus interface board 1030 and pluggable the multiple modules electricity being connected on the bus interface board 1030
Source.It is well known to those skilled in the art, will not be repeated here for other circuit structures of power module and redundant system.
Compared with prior art, the utility model has the advantages that：
In embodiment of the present utility model, there is provided one kind can turn off capacitor discharging circuit, extract detection unit and be used for
Detect whether the modular power source is extracted from bus interface board, to control the break-make of the switch element；When the modular power source is transferred to
When, the switching means conductive, the discharge cell is discharged；When modular power source is not transferred to, the switch element disconnects, and now puts
Electric unit open circuit.Extract detection cell circuit detects whether whole circuit module is extracted by the way that whether port is grounded, if extracting,
Then the port is hanging, and switch element starts, and discharge cell starts to discharge, and the electric charge on electric capacity is discharged by discharge resistance, with this
The discharging function that turns off of the condenser network is realized, while the extraction detection unit also includes the second detection unit, had and the
One detection unit identical structure, but bus interface board is accessed prior to the first detection unit, ensure normal startup sequential, while again
Will not false triggering discharge circuit, reduce loss while circuit reliability it is also higher.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in various in the technical scope that the utility model discloses
Equivalent modifications or substitutions, these modifications or substitutions should all cover within the scope of protection of the utility model.Therefore, this practicality
New protection domain should be defined by scope of the claims.
Claims (10)
- A kind of 1. 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, with 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 are 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 forms.
- 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 include 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 are 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 connects.
- 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, and 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, and described first connects End is connect as drain electrode, the 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, for pluggable it is connected to a bus interface board, 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 are the modular power source described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720475436.5U CN206807281U (en) | 2017-05-02 | 2017-05-02 | Capacitor discharging circuit and modular power source and redundant system with the circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720475436.5U CN206807281U (en) | 2017-05-02 | 2017-05-02 | Capacitor discharging circuit and modular power source and redundant system with the circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206807281U true CN206807281U (en) | 2017-12-26 |
Family
ID=60737740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720475436.5U Withdrawn - After Issue CN206807281U (en) | 2017-05-02 | 2017-05-02 | Capacitor discharging circuit and modular power source and redundant system with the circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206807281U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972743A (en) * | 2017-05-02 | 2017-07-21 | 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 |
-
2017
- 2017-05-02 CN CN201720475436.5U patent/CN206807281U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972743A (en) * | 2017-05-02 | 2017-07-21 | 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 |
| CN106972743B (en) * | 2017-05-02 | 2024-01-16 | 茂硕电源科技股份有限公司 | Capacitor discharge circuit, and module power supply and redundancy system with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171226 Effective date of abandoning: 20240116 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20171226 Effective date of abandoning: 20240116 |