CN209071743U - A kind of nothing powers on the hot plugging device of sparking and power-off arcing - Google Patents
A kind of nothing powers on the hot plugging device of sparking and power-off arcing Download PDFInfo
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- CN209071743U CN209071743U CN201822189414.XU CN201822189414U CN209071743U CN 209071743 U CN209071743 U CN 209071743U CN 201822189414 U CN201822189414 U CN 201822189414U CN 209071743 U CN209071743 U CN 209071743U
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- contact pilotage
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Abstract
A kind of nothing is disclosed to power on sparking and power off the hot plugging device of arcing, the hot plugging device includes input terminal, master switch device, output end, power load, voltage judgment module is gentle opens module, and the output end includes the plug with the first contact pilotage, the second contact pilotage and third contact pilotage.By the hot plugging device, can eliminate generated in switch hot plug process power on sparking and power-off phenomenon of arc discharge.
Description
Technical field
Sparking is powered on the utility model relates to power electronics field more particularly to a kind of nothing and powers off the electrification of arcing
Plug-in and pull-off device.
Background technique
Hot plugging circuit is very widely used in every field, and the hot plugging refers to power supply unit in electrification
Under state, directly pass through the direct processes being connected with electrical equipment of conductors such as plug, socket.Currently, hot plugging circuit exists
Following defect: 1, powering on sparking, i.e. the beginning moment of power supply powering load, and since small area contacts, high current passes through conductor,
The phenomenon that leading to hot-spot, the ionized state of contact point formation metallic vapour, and issuing spark.2, arcing is powered off, that is, is powered
Power supply and the load time of releasing maintain original size since electric current cannot be mutated, but conductor starts the gap formed when being detached from very
It is small, electric field strength is very big, electronics forms " field strength transmitting " under forceful electric power field action, with enough kinetic energy electronics and gap in
Property medium point generate collision, temperature sharply increases, and the state of ionization of gas molecule and metallic vapour is maintained, and is formed stable
The phenomenon that conductive path, formation electric arc.Both defects cause scene security risk occur, and personnel is made to come to harm or frighten,
It will lead to equipment damage, while security risk brought to ambient enviroment.
Currently, there are three types of the prior arts relevant to solving the above problems:
1, existing plug-and-play circuit design: for example, by using the integrated circuit LM5069 of Texas Instruments.This kind of circuit is only
The electric current flowed through in energy suppression circuit is no more than design value, with certain slope ascending current.In actual use, it is big that there are electric currents
Just there is spark phenomenon to occur in 1A or more, in large current load when device the technical problems such as be difficult to select.Meanwhile the circuit
There is no any effect for preventing arcing when power supply is extracted.
2, there are difference, one contact pilotage elder generations of the program for length plug scheme, i.e. the first contact pilotage of plug and the second contact pilotage length
Contact, then another contact pilotage is contacted, reduce the probability that half occurs for problem, but without thoroughly eliminating sparking and arcing.
3, using the plug of special coating, only when sparking or arcing, plug surface preserves from this scheme
Or the intensity of sparking or arcing is reduced, therefore sparking or arcing cannot be completely eliminated.In actual use, coating is easy broken
Damage is not different after coating is damaged with ordinary plug.
Obviously, above-mentioned three kinds of technologies all only partially solve the problems, such as, and scheme 1 and 3 also brings the increase of cost.
Utility model content
The utility model provides a kind of nothing and powers on sparking and power off the hot plugging device of arcing, it is therefore intended that with passing through electricity
The design and work on road avoid powering on sparking and power off the generation of arcing defect.
The purpose of this utility model is achieved through the following technical solutions:
The embodiments of the present invention provide a kind of nothing and power on sparking and power off the hot plugging device of arcing, including input
End, master switch device, output end and power load, which is characterized in that the hot plugging device further includes that voltage judges mould
Block is gentle to open module, and the output end includes the plug with the first contact pilotage, the second contact pilotage and third contact pilotage；
Wherein the first end of the master switch device is connected with the input terminal, and the of second end and the output end
One contact pilotage or the second contact pilotage are connected, the electric power for giving the power load to provide on or off；The of the output end
One contact pilotage or the second contact pilotage are connected with the master switch device, for being powered by the plug to the power load,
The third contact pilotage of the output end is connected with the voltage judgment module, for transmitting the voltage signal of the third contact pilotage
To the voltage judgment module；The first end of the voltage judgment module is connected with the third contact pilotage of the output end, is used for
Receive the voltage signal of the third contact pilotage, second end with it is described it is slow open module and be connected, for by it is described delay open module control
Make the conducting of the master switch device；It is described it is slow open module respectively with the voltage judgment module and the master switch device
It is connected, for being pre-charged or rapidly switching off master switch device to the capacitor of load-side before the master switch break-over of device
Part.
For example, the output end is connected with the power load, the power load includes slotting with the output end
Matching used socket, the socket include the first jack, the second jack and third jack.
For example, the first contact pilotage of the plug, the second contact pilotage and third contact pilotage be inserted into respectively the socket the first jack,
Second jack and third jack, when third contact pilotage is in contact with each other with the third jack, voltage judgment module, which sends signal, to be made
Master switch break-over of device, when third contact pilotage is disengaged from each other with the third jack, voltage judgment module, which sends signal, to be made to lead
Control switching device shutdown.
For example, first contact pilotage is identical with the length of second contact pilotage, the length of the third contact pilotage is than described
The length of one contact pilotage or second contact pilotage is short.
For example, the hot plugging device further includes power supply module, the power supply module and the input terminal and the electricity
Pressure judgment module is respectively connected with, for providing voltage to the voltage judgment module.
The utility model has the following beneficial effects: switch hot plug can be eliminated steadily in the long term by the use of the present apparatus
What is generated in the process powers on sparking and power-off phenomenon of arc discharge.Solves the peace in live line work environment with both of these problems associated
Full hidden danger, protection operator's safety, eliminates by the risk of two problem bring equipment damages.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, the attached drawing of embodiment will be made below simple
Ground introduction, it should be apparent that, the accompanying drawings in the following description merely relates to some embodiments of the utility model, rather than practical to this
Novel limitation.
Fig. 1 is the block diagram of the hot plugging device of an embodiment of the present invention；
Fig. 2 is the circuit diagram of the hot plugging device of an embodiment of the present invention.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
The technical solution of the utility model embodiment is clearly and completely described in the attached drawing of type embodiment.Obviously, described
Embodiment is a part of the embodiment of the utility model, instead of all the embodiments.Based on described the utility model
Embodiment, those of ordinary skill in the art's every other embodiment obtained under the premise of being not necessarily to creative work, all belongs to
In the range of the utility model protection.
Fig. 1 is that the nothing of an embodiment of the present invention powers on sparking and powers off the block diagram of the hot plugging device of arcing.
As shown in Figure 1, hot plugging device include input terminal 10, power supply module 21, voltage judgment module 22, master switch device 23,
It is slow to open module 24, output end 30 and power load 40.Wherein, output end 30 includes having contact pilotage (i.e. the first contact pilotage, the second contact pilotage
With third contact pilotage) plug, power load 40 includes and the matching used socket of the plug of output end 30.Master switch device 23
First end be connected with input terminal 10, second end is connected with the first or second contact pilotage of output end 30, for being connected or closing
Break the electric power provided to power load 10.The first contact pilotage or the second contact pilotage of output end 30 are connected with master switch device 23,
It powers for being connected by plug to power load 40；The third contact pilotage of output end 30 is connected with voltage judgment module 22, uses
In the voltage signal of third contact pilotage is transferred to voltage judgment module.The of the first end of voltage judgment module 22 and output end 30
Three contact pilotages are connected, for receiving the voltage signal of third contact pilotage；Second end opens module 24 and is connected with slow, for being opened by slow
The conducting of module control master switch device.It is slow to open module 24 and be connected respectively with voltage judgment module 22 and master switch device 23
It connects, for giving the capacitor of load-side to be pre-charged before master switch break-over of device, reduces inrush current；It is also used for quickly closing
Disconnected master switch, and master switch is protected, it is impacted from due to voltage spikes.One end of power supply module 21 is connected with input terminal 10,
The other end is connected with voltage judgment module 22, is converted into the voltage that suitable control device uses for realizing power supply.
Fig. 2 is that the nothing of an embodiment of the present invention powers on sparking and powers off the circuit diagram of the hot plugging device of arcing.
As shown in Fig. 2, input terminal 10 is power supply, power supply is direct current supply.Power supply module 21 is pressure stabilizing representated by VZ1
The electronic devices such as pipe, regulated converter or component；The one end VZ1 is connected with power supply, the other end and voltage judgment module 22
It is connected, converts the voltage that suitable control device uses for power supply.Output end 30 includes by the first contact pilotage P1A, second
The plug of contact pilotage P2A and third contact pilotage P3A composition, plug is conductor.Power load 40 includes cooperating with the plug of output end 30
The socket used, for example, the socket is made of the first jack P1B, the second jack P2B and third jack P3B.In the present embodiment,
First contact pilotage P1A, the length of the second contact pilotage P2A are identical, and length than two contact pilotages P1A and P2A of third contact pilotage P3A are short.Therefore,
When plug is just inserted into socket, the first contact pilotage P1A and the second contact pilotage P2A connect with the first jack P1B, the second jack P2B respectively
Touching, at this point, being not yet in contact with each other between third contact pilotage P3A and third jack P3B since the length of third contact pilotage is shorter.With
The depth that plug protrudes into socket increases, and third contact pilotage P3A and third jack P3B are in contact with each other, to form the electricity of third contact pilotage
Press signal.On the contrary, the contact between third contact pilotage P3A and third jack P3B is broken first when plug comes out of the socket
Bad, later, the first contact pilotage P1A and the second contact pilotage P2A are just detached from the first jack P1B, the second jack P2B.Master switch device
23 include VM1, and the grid of VM1 opens module 24 and be connected with slow, and source electrode is connected with power supply, drain and output end 30 the
Two contact pilotage P3A are connected.When VM1 break-over of device, power supply is supplied to power load electric power；When VM1 device disconnects, disconnect
The electric power of power load.In this embodiment, 23 field-effect transistors MOSFET of master switch device is realized, in other technologies side
It is also possible to the electronic control switch device such as relay in case.The slow module 24 that opens includes resistance R1, R3, R5, capacitor C2 and crystal
Pipe VD1.R1 resistance value is larger, when the first contact pilotage P1A and the second contact pilotage P2B of output end 30 are inserted with the first of power load 40 respectively
After hole P1B and P2B contact, provide generally should be smaller than the Weak current of 0.3A first, give capacitive load charging, R1 is slow open the time can
To need to be arranged according to user, but electric current should not be made to increase to the range of sparking or arcing, master switch is arranged in R5, R3 and C2
Opening speed.The closing velocity of VD1 acceleration master switch.By the contact between third contact pilotage P3A and third jack P3B,
Using the power supply positive signal experienced on R7 as voltage signal, it is transferred to voltage judgment module 22.Voltage judgment module 22
Including resistance R2, R4, R6, R7, a reference source N2, capacitor C1 and operational amplifier N1B.A reference source N2 is mentioned to the mono- comparison end N1B
For stable reference voltage, voltage signal is compared with the reference voltage, and then judges the first contact pilotage P1A and the second contact pilotage
Whether P2A has contacted or whether has had begun extraction with the first jack P1B, the second jack P2B.In the present embodiment, voltage
Decision circuitry is realized with operational amplifier N1B, is also possible to other detection devices with similar functions.As third contact pilotage P3A
When being in contact with each other with the third jack P3B, voltage judgment module 22, which sends signal, makes master switch break-over of device, when third is touched
When needle P3A and the third jack P3B are disengaged from each other, voltage judgment module 22, which sends signal, turns off master switch device.
The working principle of the electronic switching circuit of the utility model is described by taking Fig. 2 as an example below: as shown in Fig. 2, in plug
The length of first contact pilotage P1A and the second contact pilotage P2A are identical, and the length of third contact pilotage P3A is than the first contact pilotage P1A and the second contact pilotage
P2A is shorter, and the specific size that shortens can be determined according to the speed that pull out is charged, such as: the speed according to general pull action is small
It is calculated in 2 meter per seconds, the length that can set third contact pilotage P3A is 2mm shorter than the first contact pilotage P1A and the second contact pilotage P2A.It is exporting
When 10 bands being held to be electrically interposed in electrical equipment, the first contact pilotage P1A, the second contact pilotage P2A connect first with the first jack P1B, the second jack P2B
Touching is contacted followed by third contact pilotage P3A.When third contact pilotage P3A contact, the first contact pilotage P1A and the second contact pilotage P2A have had
Large contact area, signal is passed to operational amplifier N1B by third contact pilotage P3A at this time, and N1B judges the first contact pilotage P1A and
Two contact pilotage P2A come into full contact with the first jack P1B, the second jack P2B, then VM1 is connected.Whole process will not be in the line
The impact of electric current moment is generated, therefore spark phenomenon will not be generated.Assuming that the process of plug is shaken, that is, there is insertion and wink
Between the state extracted, since the time is shorter, VM1 is not turned under the control of slow switch circuit or not sufficiently conductive, will not
Rush of current and spark phenomenon occurs.After load terminal voltage is higher or stablizes, pull action has occurred, at this time since third is touched
Needle P3A is detached from first, and operational amplifier N1B can't detect load voltage signal, then closes VM1 rapidly by VD1, closes VM1
Afterwards, when the first contact pilotage P1A, the second contact pilotage P2A are detached from the first jack P1B, the second jack P2B respectively, only R1 is mentioned in circuit
The Weak current of confession, therefore phenomenon of arc discharge will not occur.Therefore, having the beneficial effect that for above-described embodiment can be steadily in the long term
What is generated in elimination switch hot plug process powers on sparking and power-off phenomenon of arc discharge.Solve in live line work environment with the two
The security risk of problem associated, protection operator's safety, eliminates by the risk of two problem bring equipment damages.
Feature described in above embodiments, structure or characteristic can be integrated in any other suitable manner one or
In multiple embodiments.In the above description, some concrete details, such as circuit, device etc. are provided, it is practical to this to provide
The comprehensive understanding of novel embodiment.However, it is understood by those of ordinary skill in the art that the utility model is not necessarily to said one or more
A concrete details, which can be realized, or other components, material, method can also be used etc., to be realized.In other instances, known
Structure, material or operation be not shown or described in detail the various aspects in order to avoid fuzzy the utility model.
The above is only the exemplary embodiment of the utility model, the protection scope rather than limited the present invention,
The protection scope of the utility model is determined by the attached claims.
Claims (5)
1. a kind of nothing power on sparking and power off arcing hot plugging device, including input terminal, master switch device, output end and
Power load, which is characterized in that the hot plugging device, which further includes that voltage judgment module is gentle, opens module, the output end packet
Include the plug with the first contact pilotage, the second contact pilotage and third contact pilotage；
Wherein the first end of the master switch device is connected with the input terminal, the first touching of second end and the output end
Needle or the second contact pilotage are connected, the electric power for giving the power load to provide on or off；First touching of the output end
Needle or the second contact pilotage are connected with the master switch device, described for being powered by the plug to the power load
The third contact pilotage of output end is connected with the voltage judgment module, for the voltage signal of the third contact pilotage to be transferred to institute
State voltage judgment module；The first end of the voltage judgment module is connected with the third contact pilotage of the output end, for receiving
The voltage signal of the third contact pilotage, second end with it is described it is slow open module and be connected, for slow opening module control institute by described
State the conducting of master switch device；It is described slow to open module and be connected respectively with the voltage judgment module and the master switch device
It connects, for being pre-charged or rapidly switching off master switch device to the capacitor of load-side before the master switch break-over of device.
2. a kind of nothing according to claim 1 powers on sparking and powers off the hot plugging device of arcing, which is characterized in that institute
It states output end to be connected with the power load, the power load includes matching used slotting with the plug of the output end
Seat, the socket include the first jack, the second jack and third jack.
3. a kind of nothing according to claim 2 powers on sparking and powers off the hot plugging device of arcing, which is characterized in that institute
The first contact pilotage, the second contact pilotage and third contact pilotage for stating plug are inserted into the first jack, the second jack and third of the socket respectively
Jack, when third contact pilotage is in contact with each other with the third jack, voltage judgment module, which sends signal, leads master switch device
Logical, when third contact pilotage is disengaged from each other with the third jack, voltage judgment module, which sends signal, turns off master switch device.
4. a kind of nothing according to claim 2 powers on sparking and powers off the hot plugging device of arcing, which is characterized in that institute
State that the first contact pilotage is identical with the length of second contact pilotage, the length of the third contact pilotage is than first contact pilotage or described by second
The length of contact pilotage is short.
5. a kind of nothing according to claim 1 powers on sparking and powers off the hot plugging device of arcing, which is characterized in that institute
Stating hot plugging device further includes power supply module, and the power supply module distinguishes phase with the input terminal and the voltage judgment module
Connection, for providing voltage to the voltage judgment module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822189414.XU CN209071743U (en) | 2018-12-25 | 2018-12-25 | A kind of nothing powers on the hot plugging device of sparking and power-off arcing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822189414.XU CN209071743U (en) | 2018-12-25 | 2018-12-25 | A kind of nothing powers on the hot plugging device of sparking and power-off arcing |
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| Publication Number | Publication Date |
|---|---|
| CN209071743U true CN209071743U (en) | 2019-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822189414.XU Active CN209071743U (en) | 2018-12-25 | 2018-12-25 | A kind of nothing powers on the hot plugging device of sparking and power-off arcing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766545A (en) * | 2020-05-14 | 2020-10-13 | 浙江南都电源动力股份有限公司 | Connector testing method and device |
| CN114551156A (en) * | 2022-02-28 | 2022-05-27 | 西安思丹德信息技术有限公司 | Relay contact protection circuit for controlling capacitive load |
-
2018
- 2018-12-25 CN CN201822189414.XU patent/CN209071743U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766545A (en) * | 2020-05-14 | 2020-10-13 | 浙江南都电源动力股份有限公司 | Connector testing method and device |
| CN111766545B (en) * | 2020-05-14 | 2022-11-15 | 浙江南都电源动力股份有限公司 | Connector testing device |
| CN114551156A (en) * | 2022-02-28 | 2022-05-27 | 西安思丹德信息技术有限公司 | Relay contact protection circuit for controlling capacitive load |
| CN114551156B (en) * | 2022-02-28 | 2023-08-29 | 西安思丹德信息技术有限公司 | Relay contact protection circuit for controlling capacitive load |
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