CN106972458B - A kind of adaptive wide scope DC source output short circuit protective device - Google Patents
A kind of adaptive wide scope DC source output short circuit protective device Download PDFInfo
- Publication number
- CN106972458B CN106972458B CN201710291107.XA CN201710291107A CN106972458B CN 106972458 B CN106972458 B CN 106972458B CN 201710291107 A CN201710291107 A CN 201710291107A CN 106972458 B CN106972458 B CN 106972458B
- Authority
- CN
- China
- Prior art keywords
- intermediate relay
- circuit
- short
- load
- normally
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 11
- 230000001681 protective effect Effects 0.000 title claims abstract description 10
- 230000000694 effects Effects 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of adaptive wide scope DC source output short circuit protective devices, the short-circuit protection includes external dc power (1), short-circuit protection circuit, it rises and protects deenergizing, intermediate relay coil and interlock circuit, DC load (22), the present invention not only efficiently solves existing electrical equipment during wiring, being easy to happen load short circuits makes power supply and the problem of with electrical component or equipment damage, and it efficiently solves existing DC power supply short-circuit protection and is only common same voltage class, not the problem of short-circuit protection effect is not had to the power supply of non-common voltage grade.
Description
Technical field
The present invention relates to technical field of electric control, and in particular to a kind of adaptive wide scope DC power supply output short-circuit guarantor
Protection unit.
Background technique
Load used requires voltage driving on many electrical equipments, in device components installation initial stage debugging or sets
When there is mis-wired in standby maintenance process, it often will appear load short circuits phenomenon；There are also college student especially electric automatizations
Load short circuits phenomenon inevitably occurs for professional, On Electro-mechanics Integration Major student, in load short circuits when testing
When, gently then trip, it is heavy then fuse explosion occurs, issued smog and explosive sound is damaged with fuse, many can be made
Raw to have the psychology of fear to electric control circuit or the debugging of programming Control system function, this then influences students practical abikty and innovation energy
The raising of power.Simultaneously as the short circuit of load, most probably makes power supply and with electrical component or equipment damage.Although currently, market
Upper existing line related short-circuit protection, but obtain the defects of due to its price height, inconvenient maintenance, single power protection grade
Less than extensive use.Such as a kind of laboratory power of alterating and direct current short-circuit protection of patent No. ZL2016208805022, it is all after
Electric apparatus coil voltage rating is only common same voltage class, does not have short-circuit protection to the power supply of non-common voltage grade
Effect.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of adaptive wide scope DC source output short circuit protective device,
The present invention not only efficiently solves existing electrical equipment during wiring, and being easy to happen load short circuits makes power supply and electricity consumption member device
The problem of part or equipment damage, and efficiently solve existing DC power supply short-circuit protection and be only common same voltage
Grade does not have the problem of short-circuit protection acts on to the power supply of non-common voltage grade.
The invention is realized by the following technical scheme:
A kind of adaptive wide scope DC source output short circuit protective device, it is characterised in that: the short-circuit protection
Including external dc power (1), short-circuit protection circuit, rises and protect deenergizing, intermediate relay coil and interlock circuit, DC load
(22)；The protection circuit includes fuse FU(2) and thermistor PTCRt(3), fuse FU(2) input terminal and outside it is straight
Galvanic electricity source (1) positive polarity is connected, fuse FU(2) output end is connected with thermistor PTCRt(3) input terminal；It protects for described and breaks
Circuit includes cut-off push button SB1(4), reinstate button SB2(5) and holding circuit (6), the holding circuit (6) is by multiple centres
Relay normally open contact composition, cut-off push button SB1(4) input terminal is connected with thermistor PTCRt(3) output end, output end and
Reinstate button SB2(5) input terminal be connected, intermediate relay normally opened contact group with reinstate button SB2(5) be in parallel；The centre
Relay coil and interlock circuit are made of multiple intermediate relay coils and its normally-closed contact, the normally-closed contact of intermediate relay
Play interlocking.
The further Technological improvement plan of the present invention is:
The intermediate relay includes direct current 48V intermediate relay, direct current 36V intermediate relay, the centre direct current 24V relay
Device, direct current 12V intermediate relay, direct current 9V intermediate relay, direct current 6V intermediate relay.
The further Technological improvement plan of the present invention is:
The thermistor PTCRt(3) resistance value load work normally when very little, it is normal not influence DC load (22)
Work, when DC load (22) short circuit, resistance value can become larger rapidly with the size of current of route, to play protection fusing
Device FU(2) and external dc power (1) effect.
The further Technological improvement plan of the present invention is:
Described guarantor's deenergizing is pressed after short-circuit protection is connect with external dc power (1) and DC load (22)
Under reinstate button SB2(5), there is an intermediate relay coil to obtain in intermediate relay coil and interlock circuit electric, in its normally opened touching
Corresponding normally opened contact closure realization in point group is self-locking, thus to DC load (22) continued power being attached thereto；It presses disconnected
Open button SB1(4) DC load (22) can be made to cut off power supply.
The further Technological improvement plan of the present invention is:
If in the intermediate relay coil and interlock circuit voltage levels intermediate relay coil obtain it is electric after, with its often
It is electric that closed contact obtain all intermediate relay coils lower than this voltage class cannot；If low-voltage-grade intermediate relay line
Enclose it is electric after, so that all intermediate relay coils of two grades higher than this voltage class or more cannot with its normally-closed contact
It obtains electric.
The further Technological improvement plan of the present invention is:
Component used in the short-circuit protection is mountable on a printed circuit board, or is connected by conducting wire.
The further Technological improvement plan of the present invention is:
The intermediate relay is the band normally closed small-sized electromagnetic type relay of lamp 4 normally opened 4.
Compared with prior art, the present invention having following obvious advantage:
One, the characteristic that the present invention can be worked normally in certain under-voltage and overvoltage region using intermediate relay coil,
Realize wider range in can consecutive variations DC power supply short-circuit protection effect.
Two, the present invention can be suitble to load (5~50V of direct current, exchange 380V, 220V, 110V, 36V compared with multi-voltage grade
Deng), range is wide, versatile.
Three, short-circuit protection of the present invention has a wide range of application, and (such as vehicle gas cylinder hydraulic pressure detection device, various hydroformings are infused
Mould equipment etc.), it prevents in equipment use process, when short circuit occurs for certain load, shields to power supply provided by it.
Four, electric components quantity used in short-circuit protection of the present invention is few, price is low, and detachable, convenient for safeguarding
Installation, component are also reusable.
Detailed description of the invention
Fig. 1 is control circuit schematic diagram of the present invention.
Specific embodiment
As shown in Figure 1, short-circuit protection of the present invention includes external dc power 1, short-circuit protection circuit, rises and protect power-off
Road, intermediate relay coil and interlock circuit, DC load 22, protection circuit includes fuse FU 2 and thermistor PTCRt
2 input terminal of 3, fuse FU is connected with external dc power positive polarity, 2 output end of fuse FU and thermistor PTCRt 3
Input terminal is connected, and described guarantor's deenergizing includes cut-off push button SB1 4, reinstates button SB2 5 and holding circuit 6, the holding
Circuit 6 is made of multiple intermediate relay normally opened contacts, 4 input terminal of cut-off push button SB1 and 3 output end of thermistor PTCRt
Be connected, 4 output end of cut-off push button SB1 is connected with 5 input terminal of button SB2 is reinstated, intermediate relay normally opened contact group with reinstate
Button SB2 5 is in parallel, and the intermediate relay coil and interlock circuit include direct current 48V intermediate relay coil, direct current 36V
Intermediate relay coil, direct current 24V intermediate relay coil, direct current 12V intermediate relay coil, direct current 9V intermediate relay line
Circle, direct current 6V intermediate relay coil and their normally-closed contact, the normally-closed contact of intermediate relay play interlocking, the heat
Quick its resistance value of resistance PTCRt 3 very little when DC load works normally does not influence DC load normal work, works as DC load
When short-circuit, resistance value can become larger rapidly with the size of current of route, thus start protection fuse FU2 and external dc electricity
The effect in source 1；Described guarantor's deenergizing is pressed after short-circuit protection is connect with external dc power 1 and DC load 22
Button SB2 5 is reinstated, has an intermediate relay coil to obtain in intermediate relay coil and interlock circuit electric, in its normally opened contact group
In corresponding normally opened contact closure realize it is self-locking, thus to 22 continued power of DC load that is attached thereto；Press cut-off push button
SB1 4 can make DC load cut off power supply；Among the intermediate relay coil and interlock circuit high voltage appearance grade after
Electric apparatus coil obtain it is electric after, obtain all intermediate relay coils lower than this voltage class cannot with its normally-closed contact electric, it is low
Voltage class intermediate relay coil obtain it is electric after, make all of two grades higher than this voltage class or more with its normally-closed contact
Intermediate relay coil cannot obtain electric；The intermediate relay uses the band normally closed small-sized electromagnetic type relay of lamp 4 normally opened 4,
It can judge whether the voltage value range to direct 3 power supply of load and DC external power supply 1 by the light on and off of indicator light；Institute
State component used in short-circuit protection both it is mountable on a printed circuit board, also can be with with connection.If user does not know
DC load voltage range can all use above-mentioned intermediate relay, can be only corresponding with one if knowing its specific voltage class
The intermediate relay of voltage class, and all high voltages etc. being connected with this intermediate relay coil end of incoming cables with jumper cap
The normally-closed contact of grade intermediate relay is shorted, all lower electricity being connected with this intermediate relay finish lead with jumper cap
The normally-closed contact of grade intermediate relay is pressed to be shorted, direct current intermediate relay used in the short-circuit protection can be by its coil
It changes AC intermediate relay, such as AC380V, AC220V, AC110V, AC36V into, realizes the guarantor exported to AC power source short circuit
Shield.
The working principle of the invention is sketched in conjunction with Fig. 1:
This short-circuit protection is real using the relay characteristics that intermediate relay operation voltage is voltage rating 70~125%
Small-scale continuous output voltage values near present intermediate relay voltage rating, utilize different voltages grade intermediate relay
Combination, the output voltage values of realization 5~50V of direct current wide scope or several fixed alternating voltage grades (exchange 380V, 220V,
110V, 36V etc.) output voltage values.
After short-circuit protection is connected by user with external dc power 1 and DC load 22, press reinstate by
Button SB2 5, according to the voltage value that external dc power 1 provides, corresponding intermediate relay coil obtains electric, passes through the normal of relay
The movement with normally-closed contact is opened, is powered to DC load 22.If 1 voltage value of external dc power is 10V, then rated coil voltage
Must be electric for the intermediate relay KA4 coil 14 of 12V, normally-closed contact 15 disconnects, and makes the coil 17 of intermediate relay KA5 and KA6
Cannot be obtained with 20 it is electric, meanwhile, the normally-closed contact 16 of intermediate relay also disconnects, so that the coil 7 of intermediate relay KA1 and KA2
Can not be obtained with 9 it is electric, at this time intermediate relay KA4 in relay normally open contact group 6 normally opened contact closure, give DC load
22 persistently provide operating voltage.When short circuit occurs for DC load 22, voltage value is in intermediate relay coil and interlock circuit
0, at this time in intermediate relay group that electric intermediate relay coil losing electricity, normally opened contact reset so that direct current
Load 22 and 1 phase disjunction of external dc power, play the purpose of protection power source and load.Moment occurs in short circuit, due to short circuit
Electric current is bigger, if not adding PTC thermistor Rt 3, can damage external dc power 1(surely unless external dc power itself
Has short-circuit output protecting function).Cut-off push button SB1 4 opens external dc in debugging line function process interrupt convenient for user
Power supply 1 and DC load 22 are used, and the effect of safe is played.Fuse FU 2 is that in DC load 22 short circuit occurs for further protect
Moment in the case of having component damage in short-circuit protection, protects the function of external dc power 1.
If DC load 22 is the load of common voltage grade, such as direct current 48V, 36V, 24V, 12V, 9V, 6V can be direct
Using relevant voltage grade 1 intermediate relay can (DC load 22 of 5V can be used voltage class be 6V centre after
Electric appliance), it at this moment needs to be shorted the normally-closed contact of other intermediate relays to come so that circuit works normally.Such as DC load 22
Operating voltage is direct current 24V, and only needing voltage rating at this time is the intermediate relay KA3 of direct current 24V, with jumper cap by voltage rating
The phase of normally-closed contact 8 and 10 that all intermediate relay KA1 and KA2 higher than 24V are connected with its end of incoming cables of coil 7 and 9 is shorted, and is used
Voltage rating is lower than all intermediate relay KA4, KA5 and KA6 and its coil 14,17 and 20 leading-out terminal phases of 24V by jumper cap
Normally-closed contact 16,19 and 21 even is mutually shorted, this, which can be pressed, reinstates button SB2 5, can be powered to the load of direct current 24V.
If load is the load of exchange common voltage grade, 380V, exchange 2200V, exchange 110V, exchange are such as exchanged
At this moment all direct current intermediate relays on short-circuit protection can all be pulled up (bottom combination hub remains stationary), changed by 36V etc.
Corresponding normally-closed contact jumper cap is shorted at the AC intermediate relay of relevant voltage grade, and in aforementioned manners.
The technical means disclosed in the embodiments of the present invention is not limited only to technological means disclosed in above embodiment, further includes
Technical solution consisting of any combination of the above technical features.It should be pointed out that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (5)
1. a kind of adaptive wide scope DC source output short circuit protective device, it is characterised in that: the short-circuit protection packet
External dc power (1), short-circuit protection circuit are included, rises and protects deenergizing, intermediate relay coil and interlock circuit, DC load
(22)；The protection circuit includes fuse FU(2) and thermistor PTCRt(3), fuse FU(2) input terminal and outside it is straight
Galvanic electricity source (1) positive polarity is connected, fuse FU(2) output end is connected with thermistor PTCRt(3) input terminal；It protects for described and breaks
Circuit includes cut-off push button SB1(4), reinstate button SB2(5) and holding circuit (6), the holding circuit (6) is by multiple centres
Relay normally open contact composition, cut-off push button SB1(4) input terminal is connected with thermistor PTCRt(3) output end, output end and
Reinstate button SB2(5) input terminal be connected, intermediate relay normally opened contact group with reinstate button SB2(5) be in parallel；The centre
Relay coil and interlock circuit are made of multiple intermediate relay coils and its normally-closed contact, the normally-closed contact of intermediate relay
Play interlocking；
If in the intermediate relay coil and interlock circuit voltage levels intermediate relay coil obtain it is electric after, with its normally closed touching
It is electric that point obtain all intermediate relay coils lower than this voltage class cannot；If low-voltage-grade intermediate relay coil obtains
It after electricity, obtain all intermediate relay coils of two grades higher than this voltage class or more cannot with its normally-closed contact
Electricity.
2. a kind of adaptive wide scope DC source output short circuit protective device according to claim 1, it is characterised in that:
The intermediate relay includes direct current 48V intermediate relay, direct current 36V intermediate relay, direct current 24V intermediate relay, direct current
12V intermediate relay, direct current 9V intermediate relay, direct current 6V intermediate relay.
3. a kind of adaptive wide scope DC source output short circuit protective device according to claim 1 or 2, feature exist
In: the very little when loading normal work of the resistance value thermistor PTCRt(3) does not influence DC load (22) normal work,
When DC load (22) short circuit, resistance value can become larger rapidly with the size of current of route, to play protection fuse FU
(2) and the effect of external dc power (1).
4. a kind of adaptive wide scope DC source output short circuit protective device according to claim 1 or 2, feature exist
In: deenergizing is protected described after short-circuit protection is connect with external dc power (1) and DC load (22), is pressed and is reinstated
Button SB2(5), there is an intermediate relay coil to obtain in intermediate relay coil and interlock circuit electric, in its normally opened contact group
Corresponding normally opened contact closure realize it is self-locking, thus to DC load (22) continued power for being attached thereto；Press cut-off push button
SB1(4 DC load (22)) can be made to cut off power supply.
5. a kind of adaptive wide scope DC source output short circuit protective device according to claim 1 or 2, feature exist
In: component used in the short-circuit protection is mountable on a printed circuit board, or is connected by conducting wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291107.XA CN106972458B (en) | 2017-04-28 | 2017-04-28 | A kind of adaptive wide scope DC source output short circuit protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291107.XA CN106972458B (en) | 2017-04-28 | 2017-04-28 | A kind of adaptive wide scope DC source output short circuit protective device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106972458A CN106972458A (en) | 2017-07-21 |
| CN106972458B true CN106972458B (en) | 2019-04-05 |
Family
ID=59330276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710291107.XA Active CN106972458B (en) | 2017-04-28 | 2017-04-28 | A kind of adaptive wide scope DC source output short circuit protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106972458B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266902Y (en) * | 2009-02-17 | 2009-07-01 | 克拉玛依市博瑞科技发展有限公司 | Double-speed actuator with high power factor and high loading capability |
| EP2672595A2 (en) * | 2012-06-06 | 2013-12-11 | Diehl AKO Stiftung & Co. KG | Switching assembly and method for interrupting direct current |
| CN204794028U (en) * | 2015-07-20 | 2015-11-18 | 郑金金 | Intellectuality ac motor protector that is just reversing |
| CN106099839A (en) * | 2016-08-15 | 2016-11-09 | 淮安信息职业技术学院 | A kind of laboratory power of alterating and direct current short-circuit protection |
-
2017
- 2017-04-28 CN CN201710291107.XA patent/CN106972458B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266902Y (en) * | 2009-02-17 | 2009-07-01 | 克拉玛依市博瑞科技发展有限公司 | Double-speed actuator with high power factor and high loading capability |
| EP2672595A2 (en) * | 2012-06-06 | 2013-12-11 | Diehl AKO Stiftung & Co. KG | Switching assembly and method for interrupting direct current |
| CN204794028U (en) * | 2015-07-20 | 2015-11-18 | 郑金金 | Intellectuality ac motor protector that is just reversing |
| CN106099839A (en) * | 2016-08-15 | 2016-11-09 | 淮安信息职业技术学院 | A kind of laboratory power of alterating and direct current short-circuit protection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106972458A (en) | 2017-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103457451B (en) | A kind of high-voltage frequency converter low voltage electrifying control circuit and control method thereof | |
| CN103208782A (en) | Comprehensive detection and electric protection device for power frequency and variable frequency power supplies | |
| CN107039989A (en) | The new fling-cut switch of secondary capacitor | |
| CN102629753B (en) | Externally hung capacitor discharging device special for explosion-proof elevator frequency converter | |
| CN106972458B (en) | A kind of adaptive wide scope DC source output short circuit protective device | |
| CN206650417U (en) | A kind of adaptive wide scope DC source output short circuit protective device | |
| CN208352961U (en) | A kind of comprehensive protective circuit breaker | |
| CN203481776U (en) | Capacitor trip device | |
| CN204992530U (en) | Three -phase leakage protection circuit | |
| CN209748404U (en) | Three-phase rectification protection circuit with input surge current suppression function | |
| CN104022492A (en) | Auxiliary short circuit protection device for low-voltage power supply device of long-distance mine laneway | |
| CN102707107A (en) | Portable adjustable direct current voltage source for test of frequency changer | |
| CN202840673U (en) | Double power switch control system | |
| CN203387397U (en) | Soft starting circuit structure of large-power photovoltaic inverter auxiliary power supply | |
| CN102896402B (en) | AC welder | |
| CN102508453B (en) | AC and DC digital input circuit | |
| CN204720952U (en) | Experiment power supply over-current overvoltage protector | |
| CN201955774U (en) | Computer switching power supply test protection circuit | |
| CN110323719A (en) | A kind of Switching Power Supply output is hot-swappable and is reversely connected short-circuit protection circuit | |
| CN106300346B (en) | A kind of frequency converter maintenance power supply device with protection | |
| CN204992531U (en) | Three -phase four -wire leakage protection circuit | |
| CN209946364U (en) | Maintenance and protection detection device of fire-fighting power supply working state monitor | |
| CN202679231U (en) | Soft starting circuit | |
| CN203951162U (en) | Elevator safety protection checkout gear | |
| CN203352140U (en) | Motor protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 223005 No. 3 Meicheng Road, Huaian Economic and Technological Development Zone, Jiangsu Province Patentee after: Jiangsu electronic information Vocational College Address before: 223005 No. 3 Meicheng Road, Huaian Economic and Technological Development Zone, Jiangsu Province Patentee before: Jiangsu vocationnal college of electronics and information |
|
| CP01 | Change in the name or title of a patent holder | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20170721 Assignee: Huaian Lingmei Technology Co.,Ltd. Assignor: Jiangsu electronic information Vocational College Contract record no.: X2021980011229 Denomination of invention: An adaptive wide range DC power output short circuit protection device Granted publication date: 20190405 License type: Common License Record date: 20211025 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231116 Address after: Room 2919, Building B, No. 9 Tianchen Road, Lixia District, Jinan City, Shandong Province, 250000 Patentee after: SHANDONG CHENGKUN INFORMATION TECHNOLOGY CO.,LTD. Address before: 223005 No. 3 Meicheng Road, Huaian Economic and Technological Development Zone, Jiangsu Province Patentee before: Jiangsu electronic information Vocational College |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20240115 Address after: 518000 floor 2, floor 3 and floor 5 A, building B2, xinjianxing science and Technology Industrial Park, Fengxin Road, Gongming office building, Guangming New Area, Shenzhen, Guangdong Patentee after: SHENZHEN ENATEL ELECTRONICS CO.,LTD. Address before: Room 2919, Building B, No. 9 Tianchen Road, Lixia District, Jinan City, Shandong Province, 250000 Patentee before: SHANDONG CHENGKUN INFORMATION TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |