CN205828339U - Fuse and fusing detection device for power circuit - Google Patents
Fuse and fusing detection device for power circuit Download PDFInfo
- Publication number
- CN205828339U CN205828339U CN201620679647.6U CN201620679647U CN205828339U CN 205828339 U CN205828339 U CN 205828339U CN 201620679647 U CN201620679647 U CN 201620679647U CN 205828339 U CN205828339 U CN 205828339U
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- fuse
- circuit
- power circuit
- photosensitive circuit
- outfan
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Abstract
This utility model relates to a kind of fuse for power circuit and fusing detection device, described fuse includes fusion tube and the fuse being positioned in described fusion tube, described fuse also includes that fusing detects device for the output alarm signal when fuse failure with indicating fault status, wherein said fusing detection device includes: photodetector unit, the light that described photodetector unit sends in described fusion tube in time detecting fuse failure, and generate photoelectric detecting signal when light being detected as described alarm signal；And/or Smoke Detection unit, described Smoke Detection unit is for detecting the smog produced in described fusion tube during fuse failure, and generates Smoke Detection signal when smog being detected as described alarm signal.
Description
Technical field
This utility model relates to the high-tension fuse in a kind of power transmission lines, and this fuse can automatic decision circuit
Melting fault point.
Background technology
High-tension fuse integrates short-circuit protection, transship and isolate the function of circuit, be mainly used in ultra-high-tension power transmission line,
Voltage transformer, etc. the overload of electric equipment and short-circuit protection, be distribution line branch line and distribution transformer the most frequently used one
Kind of protective switch of the short circuit, it has economy, the feature such as easy to operate, is widely used in distribution line and distribution transformer one
Side.
High-tension fuse series connection uses in circuit, when electric current exceedes setting, makes melt with the heat that itself produces
Fuse disconnecting circuit, as short circuit and the protector of overcurrent, is used for protecting electrical equipment against overload and short circuit current
Infringement.
Conventional high-tension fuse has two big classes: a class is indoor high-voltage limiting fuse, mainly for the protection of electric lines of force
The overload of the equipment such as road, power transformer and power capacitor and short circuit, another kind of is outdoor high-voltage expulsion fuse, this type of
Fuse is when melt fusing produces electric arc, and electrical arc erosion highlights paper aerogenesis and blows elongating arc, and arc induction reactance changes phase place, just electricity
Producing zero when flowing through zero to stop, ability disconnecting circuit, metering function is inconspicuous.Conventional for fuse switch, at certain condition
Under can be with disjunction with close zero load, overhead transmission line, no-load transformer and Smaller load electric current.
Fuse switch is made up of insulated leg, dynamic/static contact, cartridge fuse three part.Static contact is arranged on insulated leg
Two ends, cartridge fuse is by the expulsion tube of internal layer and the phenolic aldehyde paper tube of outer layer or goes back oxygen glass fibre stringing and forms.When power system is sent out
During raw fault, fuse is fused rapidly by fault current, produces electric arc in fusion tube, and cartridge fuse produces under the effect of electric arc in a large number
Gas, when gas exceedes given force value, release of pressure sheet is i.e. opened with button head, alleviates the pressure in cartridge fuse,
Produce during current over-zero and strong remove liberation, make arc extinction.And when gas is not less than given force value, release of pressure sheet
Being failure to actuate, the free gas that strongly goes produced during current over-zero sprays from lower spout, and fuse buttock line is pulled out rapidly by pop-up board, makes
Arc extinction.After fuse failure, movable joint discharges, and cartridge fuse under the pressure of shell fragment, adds dead weight under upper static contact
Effect fall rapidly, by circuitry cuts, form obvious breaking gap.
Although the high-tension fuse in prior art described above has respective characteristic and application scenario, but works as circuit
When there is melting fault, all cannot determine the specified place that melting fault occurs on circuit, cause cannot changing generation event in real time
Barrier fuse, the most just cannot recover circuit unobstructed.
Utility model content
The purpose of this utility model is to provide a kind of fuse for power circuit, overcomes in conventional art and exists
When circuit generation melting fault, it is impossible to the problem that in real time detection fault occurs point.
According to above-mentioned purpose, this utility model provides a kind of fuse for power circuit, and this fuse includes fusion tube
With the fuse being positioned in this fusion tube, this fuse also includes that fusing detection device is for exporting alarm signal when fuse failure
Number with indicating fault status, wherein this fusing detection device includes: photodetector unit, and this photodetector unit is used for detecting molten
The light sent in this fusion tube during disconnected device fault, and generate photoelectric detecting signal when light being detected as this alarm signal；And/or
Smoke Detection unit, the smog that this Smoke Detection unit produces in this fusion tube in time detecting fuse failure, and detecting
Smoke Detection signal is generated as this alarm signal during smog.
In one embodiment, this fusing detection device includes this photodetector unit and this Smoke Detection unit, this fusion tube
Sidewall be provided with light detection window and Smoke Detection window, this fusing detection device is arranged at outside this fusion tube so that this light
Electro-detection unit aligns with this light detection window and this Smoke Detection unit aligns with this Smoke Detection window.
In one embodiment, this fusion tube is made up of alternatively non-transparent material.
In one embodiment, this fusing detection device also includes microcontroller, and this microcontroller is used for receiving this alarm signal
Number and in response to receive this alarm signal output failure status message.
In one embodiment, this microcontroller when fuse normally works in a dormant state, in response to receiving this report
Alert signal is waken up to export this failure status message.
In one embodiment, this fuse also includes power supply, powers for this fuse.
In one embodiment, power supply is solar energy and/or lithium battery.
In one embodiment, this fuse also includes the fault contact lead-out terminal being coupled with this microcontroller, with
In connecting external communications equipment to transmit this failure status message.
In one embodiment, this fuse also includes the wireless communication unit being coupled with this microcontroller, for
This failure status message of wireless way for transmitting.
In one embodiment, this Smoke Detection unit includes: luminescence unit；First photosensitive circuit, this luminescence unit sends
Light irradiate this first photosensitive circuit, the light that the voltage of the outfan of this first photosensitive circuit receives with this first photosensitive circuit
It is directly proportional according to intensity；And first audion, the colelctor electrode of this first audion is coupled to supply voltage via collector resistance,
Grounded emitter, base stage is coupled to the outfan of this first photosensitive circuit, when this fusion tube produces smog, this first photosensitive electricity
The voltage of the outfan on road with the intensity of illumination received weaken and reduce so that this first audion by, the one or three
The voltage switching of the colelctor electrode of pole pipe is that high level is using as this Smoke Detection signal.
In one embodiment, this first photosensitive circuit includes phototriode and the first resistance, the collection of this phototriode
Electrode is coupled to supply voltage via this luminescence unit, and emitting stage is by this first resistance eutral grounding, the internal resistance of this phototriode
Being inversely proportional to the intensity of illumination received, the voltage of the outfan of this first photosensitive circuit is the emitting stage electricity of this phototriode
Pressure.
In one embodiment, this luminescence unit is light emitting diode.
In one embodiment, the intensity of illumination that this light emitting diode sends just becomes with the electric current flowing through this light emitting diode
Ratio.
In one embodiment, buffering electricity it is provided with between outfan and the ground level of this first audion of this first photosensitive circuit
Holding, the first end of this buffering electric capacity is coupled between the outfan of this first photosensitive circuit and the ground level of this first audion, the
Two end ground connection.
In one embodiment, it is connected between the outfan of this first photosensitive circuit with this buffering electric capacity and has partition diode,
The anode of this partition diode is coupled to the outfan of this photosensitive circuit, and negative terminal is coupled to the first end of this buffering electric capacity.
In one embodiment, this photodetector unit includes: the second photosensitive circuit, the outfan of this second photosensitive circuit
The intensity of illumination that voltage receives to this second photosensitive circuit is directly proportional；Second audion, the ground level of this second audion with should
The outfan of the second photosensitive circuit couples, and colelctor electrode is coupled to supply voltage, emitting stage via emitting stage resistance eutral grounding, when this
The voltage of the outfan of two photosensitive circuits is along with, when being increased to make this second triode ON by illumination, emitting stage output is high
Current potential is using as this photoelectric detecting signal.
In one embodiment, this second photosensitive circuit includes light sensitive diode and the second resistance, and this light sensitive diode is just
Pole is coupled to supply voltage, and negative pole is just being become with the illumination accepted by this second resistance eutral grounding, the resistance value of this light sensitive diode
Ratio.
This utility model also provides for a kind of fusing for fuse and detects device, and this fusing detection device is above-mentioned melting
Disconnected detection device.
Fuse described in the utility model includes Smoke Detection unit and/or photodetector unit, when fuse produces molten
During disconnected fault, this utility model can detect the interior light produced of fuse and/or smog in real time, and is included by described fuse
Fault-signal transmitting device, real-time Transmission fault generation point, overcome present in conventional art when circuit occurs fusing therefore
During barrier, it is impossible to detection fault occurs the problem of point in real time, provide the foundation for quickly repairing of power circuit.
More preferably understand in order to above-mentioned and other aspect of the present utility model is had, preferred embodiment cited below particularly, and join
Close accompanying drawing, be described in detail below:
Accompanying drawing explanation
Fig. 1 shows the structural representation of this utility model fuse；
Fig. 2 shows the principle framework figure of this utility model fuse；
Fig. 3 shows the circuit theory diagrams of this utility model Smoke Detection unit；And
Fig. 4 shows the circuit theory diagrams of this utility model photodetector unit.
Detailed description of the invention
Refer to Fig. 1, Fig. 1 and show the structural representation of this utility model fuse 10.As it is shown in figure 1, fuse 10
Including fusion tube 1, fuse 2 and fusing detection device 9, fusing detection device 9 include photodetector unit 3, Smoke Detection unit 4,
The hard contact of power supply 5, fault 6, wireless communication module 7, microcontroller 8.
It is outside that fusing detection device 9 is placed in fusion tube 1, fits with fusion tube 1, its internal photodetector unit 3 and smog inspection
Survey unit 4 to fit on fusion tube 1 outer wall.It is provided with out with photodetector unit 3 and Smoke Detection unit 4 corresponding position on fusion tube 1
Mouth 41, opening 42, in order to make photodetector unit 3 and Smoke Detection unit 4 can sense the environmental change in fusion tube 1.When molten
When fuse 2 breaks down in disconnected device 10, fusion tube 1 occurs illumination, smog.Photodetector unit 3 can sense when illumination, and raw
Become photoelectric detecting signal as alarm signal.Smoke Detection unit 4 can sense when smog, and generates Smoke Detection signal conduct
Described alarm signal.Photodetector unit 3 and Smoke Detection unit 4 detect simultaneously, improve the reliability of testing result.This reality
Include photodetector unit 3 and the technical scheme of Smoke Detection unit 4 with novel showing simultaneously, but only comprise Photoelectric Detection
Unit 3 or only include the technical scheme of Smoke Detection unit 4 also in protection domain of the present utility model.
Refer to Fig. 2, Fig. 2 and illustrate the principle framework figure of fuse 10, microcontroller 8 receives photodetector unit 3 and cigarette
The output signal of mist detector unit 4, it is judged that circuit whether fault, and by the hard contact of fault 6 connect external communications equipment with
Transmit described failure status message, or be wirelessly transferred described failure status message by wireless communication unit 7.Separately set power supply 5
Powering to whole fuse 10, power supply 5 can select solaode and/or lithium battery.
Refer to Fig. 3, Fig. 3 and show the circuit theory diagrams of Smoke Detection unit 4, it includes luminescence unit the 101, first light
Quick circuit 102 and the first audion 103, the light that luminescence unit 101 sends irradiates the first photosensitive circuit 102, the first photosensitive circuit
The intensity of illumination that the voltage of the outfan of 102 and the first photosensitive circuit 102 receive is directly proportional, the current collection of the first audion 103
Pole is coupled to supply voltage, grounded emitter via collector resistance 104, and base stage is coupled to the output of described first photosensitive circuit
End.
When producing smog in fusion tube 1, the illumination that the first photosensitive circuit 102 receives reduces, the voltage drop of its outfan
It is low so that the first audion 103 is that high level is to examine as smog by, the voltage switching of the colelctor electrode of the first audion 103
Survey signal.
In one embodiment, the first photosensitive circuit 102 includes phototriode 105 and the first resistance 106, phototriode
The colelctor electrode of 105 is coupled to supply voltage via luminescence unit 101, and emitting stage passes through the first resistance 106 ground connection, phototriode
The internal resistance of 105 is inversely proportional to the intensity of illumination received, and the voltage of the outfan of the first photosensitive circuit 102 is phototriode
The emitting stage voltage of 105.Luminescence unit 101 is light emitting diode, and the intensity of illumination sent and the electric current flowed through are directly proportional.This
Time, when producing smog in fusion tube 1, phototriode 105 accepts illumination and reduces, and resistance raises, and circuital current reduces, and luminous two
Pole pipe 101 reduces owing to flowing through electric current, and luminous intensity reduces, and further makes phototriode 105 accept illumination and reduces, from
And form positive-feedback circuit.Make testing result more quickly, reliably.
In one embodiment, it is provided with buffering between outfan and the ground level of the first audion 103 of the first photosensitive circuit 102
Electric capacity 107, its first end is coupled between the outfan of the first photosensitive circuit 102 and the ground level of the first audion 103, the second end
Ground connection.The addition of buffering electric capacity 107 is so that when input terminal voltage raises suddenly, output end voltage will not rise the most suddenly
Height, enhances the capacity of resisting disturbance of testing result.
In one embodiment, the outfan of the first photosensitive circuit 102 has partition diode with buffering to be connected between electric capacity 107
108, the anode cutting off diode 108 is coupled to the outfan of the first photosensitive circuit 102, and negative terminal is coupled to buffer electric capacity 107
First end.Cut off diode 108 and avoid the buffering electric capacity 107 output current potential due to self discharge to the first photosensitive circuit 102
Produce impact, the beneficially accuracy of final detection result.
When non smoke in fusion tube 1, light emitting diode 101 is to set initial current conducting luminescence, and optical signal is photosensitive
After audion 105 receives, internal resistance reduces, and makes the electric current of light emitting diode 101 and phototriode 105 circuit increase, light-emitting diodes
Pipe 101 light intensity increases accordingly, and phototriode 105 internal resistance reduces accordingly, and so circulation forms positive feedback, until making first
Producing enough pressure drops on resistance 106 makes the first audion 103 turn on, and making output Smoke Detection signal 109 is low level, now,
Microcontroller 8 is identified as normal condition.Buffering electric capacity 107 plays the effect preventing moment smog from disturbing.When in fusion tube 1, smog is dashed forward
When so increasing, in environment, light transmission weakens, and the light reduction that phototriode 105 receives, internal resistance increases, the first photosensitive circuit
Electric current in 102 reduces, and light emitting diode 101 brightness weakens therewith, is thusly-formed negative feedback process, makes the first photosensitive circuit
In 102, electric current is reduced to initial current, and on the first resistance 106, voltage is gradually lowered, and the first audion 103 ends, and exports smog
Detection signal 109 is high level, is identified as malfunction to microcontroller 8.
Refer to Fig. 4, Fig. 4 and show the circuit theory diagrams of photodetector unit 3, it includes the second photosensitive circuit 201, its
The intensity of illumination that the voltage of outfan receives to it is directly proportional, the second audion 202, its ground level and the second photosensitive circuit 201
Outfan couple, colelctor electrode is coupled to supply voltage, and emitting stage is via emitting stage resistance 203 ground connection.
When the voltage of outfan of the second photosensitive circuit 201 is along with being increased to by illumination make the second audion 202 lead
Time logical, emitting stage output high potential is using as described photoelectric detecting signal.
In one embodiment, the second photosensitive circuit 201 includes light sensitive diode 204 and the second resistance 205, light sensitive diode
The positive pole of 204 is coupled to supply voltage, and negative pole passes through the second resistance 205 ground connection, and the resistance value of light sensitive diode 204 is with acceptance
Illumination is directly proportional.
When in fusion tube 1 unglazed time, light sensitive diode 204 is not turned on, and the second audion 202 ends, output photoelectric detection letter
Numbers 206 is low level, and microcontroller 8 is identified as normal condition.When fusion tube 1 has illumination, interior after light sensitive diode 204 light
Resistance reduces rapidly, and the second resistance 205 flows through electric current and increases rapidly, and the second audion 202 base voltage increases, so that the two or three pole
Pipe 202 turns on, and the second audion 202 emitter stage output photoelectric detection signal 206 is high level, is identified as event to microcontroller 8
Barrier state.Wherein circuit is to be regulated by the second resistance 205 sensitivity of illumination, can improve the resistance of the second resistance 205
Value, so that circuit is more sensitive to illumination.
Thering is provided of this disclosure being previously described is for making any person skilled in the art all can make or use these public affairs
Open.Various amendment of this disclosure the most all will be apparent from, and as defined herein general
Suitable principle can be applied to other variants spirit or scope without departing from the disclosure.Thus, the disclosure is not intended to be limited
Due to example described herein and design, but should be awarded and principle disclosed herein and novel features phase one
The widest scope caused.
Claims (18)
1. for a fuse for power circuit, described fuse includes fusion tube and the fuse being positioned in described fusion tube, and it is special
Levying and be, described fuse also includes that fusing detects device for the output alarm signal when fuse failure to indicate fault
State, wherein said fusing detection device includes: photodetector unit, described photodetector unit is used for detecting fuse failure
The light sent in Shi Suoshu fusion tube, and generate photoelectric detecting signal when light being detected as described alarm signal；And/or smog
Detector unit, described Smoke Detection unit is for detecting the smog produced in described fusion tube during fuse failure, and is detecting
Smoke Detection signal is generated as described alarm signal during smog.
2. the fuse for power circuit as claimed in claim 1, it is characterised in that described fusing detection device includes institute
Stating photodetector unit and described Smoke Detection unit, the sidewall of described fusion tube is provided with light detection window and Smoke Detection window
Mouthful, described fusing detection device is arranged at outside described fusion tube so that described photodetector unit and described smooth detection window phase
Alignment and described Smoke Detection unit align with described Smoke Detection window.
3. the fuse for power circuit as claimed in claim 2, it is characterised in that described fusion tube is by alternatively non-transparent material system
Become.
4. the fuse for power circuit as claimed in claim 1, it is characterised in that described fusing detection device also includes
Microcontroller, described microcontroller is used for receiving described alarm signal and in response to receiving described alarm signal output malfunction
Message.
5. the fuse for power circuit as claimed in claim 4, it is characterised in that described microcontroller is at fuse just
Often during work in a dormant state, it is waken up to export described failure status message in response to receiving described alarm signal.
6. the fuse for power circuit as claimed in claim 1, it is characterised in that described fuse also includes power supply electricity
Source, powers for described fuse.
7. the fuse for power circuit as claimed in claim 6, it is characterised in that power supply be solar energy and/or
Lithium battery.
8. the fuse for power circuit as claimed in claim 5, it is characterised in that described fuse also includes with described
The fault contact lead-out terminal that microcontroller is coupled, disappears to transmit described malfunction for connecting external communications equipment
Breath.
9. the fuse for power circuit as claimed in claim 5, it is characterised in that described fuse also includes with described
The wireless communication unit that microcontroller is coupled, for wirelessly transmitting described failure status message.
10. the fuse for power circuit as claimed in claim 1, it is characterised in that described Smoke Detection unit includes:
Luminescence unit；
First photosensitive circuit, the light that described luminescence unit sends irradiates described first photosensitive circuit, described first photosensitive circuit
The intensity of illumination that the voltage of outfan receives to described first photosensitive circuit is directly proportional；And
First audion, the colelctor electrode of described first audion is coupled to supply voltage via collector resistance, grounded emitter,
Base stage is coupled to the outfan of described first photosensitive circuit,
When producing smog in described fusion tube, the voltage of the outfan of described first photosensitive circuit is with the intensity of illumination received
Weaken and reduce so that described first audion by, the voltage switching of the colelctor electrode of described first audion be high level with
As described Smoke Detection signal.
11. as claimed in claim 10 for the fuse of power circuit, it is characterised in that described first photosensitive circuit includes
Phototriode and the first resistance, the colelctor electrode of described phototriode is coupled to supply voltage via described luminescence unit, sends out
Penetrating level by described first resistance eutral grounding, the internal resistance of described phototriode is inversely proportional to the intensity of illumination received, and described the
The voltage of the outfan of one photosensitive circuit is the emitting stage voltage of described phototriode.
12. as claimed in claim 11 for the fuse of power circuit, it is characterised in that described luminescence unit is luminous two
Pole is managed.
13. as claimed in claim 12 for the fuse of power circuit, it is characterised in that described light emitting diode sends
Intensity of illumination and the electric current flowing through described light emitting diode are directly proportional.
14. as claimed in claim 10 for the fuses of power circuit, it is characterised in that described first photosensitive circuit defeated
Going out and be provided with buffering electric capacity between end and the ground level of described first audion, the first end of described buffering electric capacity is coupled to described first
Between outfan and the ground level of described first audion of photosensitive circuit, the second end ground connection.
15. as claimed in claim 14 for the fuses of power circuit, it is characterised in that described first photosensitive circuit defeated
Going out end and have partition diode with being connected between described buffering electric capacity, the anode of described partition diode is coupled to described photosensitive circuit
Outfan, negative terminal is coupled to the first end of described buffering electric capacity.
16. as claimed in claim 1 for the fuse of power circuit, it is characterised in that described photodetector unit includes:
Second photosensitive circuit, the illumination that the voltage of the outfan of described second photosensitive circuit receives with described second photosensitive circuit
Intensity is directly proportional；
Second audion, the ground level of described second audion couples with the outfan of described second photosensitive circuit, and colelctor electrode couples
To supply voltage, emitting stage via emitting stage resistance eutral grounding,
When the voltage of outfan of described second photosensitive circuit is along with being increased to by illumination make described second triode ON
Time, emitting stage output high potential is using as described photoelectric detecting signal.
17. as claimed in claim 16 for the fuse of power circuit, it is characterised in that described second photosensitive circuit includes
Light sensitive diode and the second resistance, the positive pole of described light sensitive diode is coupled to supply voltage, and negative pole passes through described second resistance
Ground connection, the resistance value of described light sensitive diode is directly proportional with the illumination accepted.
18. 1 kinds of fusing detection devices for fuse, it is characterised in that described fusing detection device is claim 1-17
According to any one of fusing detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620679647.6U CN205828339U (en) | 2016-06-30 | 2016-06-30 | Fuse and fusing detection device for power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620679647.6U CN205828339U (en) | 2016-06-30 | 2016-06-30 | Fuse and fusing detection device for power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205828339U true CN205828339U (en) | 2016-12-21 |
Family
ID=57566741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620679647.6U Withdrawn - After Issue CN205828339U (en) | 2016-06-30 | 2016-06-30 | Fuse and fusing detection device for power circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205828339U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977114A (en) * | 2016-06-30 | 2016-09-28 | 上海诚意电气有限公司 | Fuse and fusing detection device |
| CN106597172A (en) * | 2016-12-27 | 2017-04-26 | 江苏电科电气设备有限公司 | Pre-embedded fusion tube verifying method |
| CN107290626A (en) * | 2017-06-28 | 2017-10-24 | 合肥市闵葵电力工程有限公司 | A kind of power line monitoring system |
| TWI683211B (en) * | 2017-12-05 | 2020-01-21 | 日商歐姆龍股份有限公司 | Power supply unit |
-
2016
- 2016-06-30 CN CN201620679647.6U patent/CN205828339U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977114A (en) * | 2016-06-30 | 2016-09-28 | 上海诚意电气有限公司 | Fuse and fusing detection device |
| CN106597172A (en) * | 2016-12-27 | 2017-04-26 | 江苏电科电气设备有限公司 | Pre-embedded fusion tube verifying method |
| CN107290626A (en) * | 2017-06-28 | 2017-10-24 | 合肥市闵葵电力工程有限公司 | A kind of power line monitoring system |
| TWI683211B (en) * | 2017-12-05 | 2020-01-21 | 日商歐姆龍股份有限公司 | Power supply unit |
| US11057974B2 (en) | 2017-12-05 | 2021-07-06 | Omron Corporation | Power supply device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161221 Effective date of abandoning: 20190118 |