CN208174360U - A kind of distributed power supply management system - Google Patents
A kind of distributed power supply management system Download PDFInfo
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- CN208174360U CN208174360U CN201820331635.3U CN201820331635U CN208174360U CN 208174360 U CN208174360 U CN 208174360U CN 201820331635 U CN201820331635 U CN 201820331635U CN 208174360 U CN208174360 U CN 208174360U
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Abstract
A kind of distributed power supply management system, including distributed power supply module, main power source module and control centre's host；The distributed power supply module connects main power source module by RS485 communication module, communicates to connect between the main power source module and control centre's host；The distributed power supply module includes power control unit and several power supply units, and the power supply unit includes control relay circuit, current collection circuit and connector CON1；The distributed power supply module accesses load circuit and switchs cassette in series with one.The utility model provides a kind of distributed power supply management system, every to have independent current monitoring circuit all the way if having main line distributed generation resource；Since circuit design has used double-direction control, even if there is the offline situation of distributed generation resource, the switch that can be yet loaded by switch enclosure normal control does not influence circuit normal use.
Description
Technical field
The utility model relates to Distributed Power Generation field, especially a kind of distributed power supply management system.
Background technique
Distributed electrical source device refers to that power is thousands of watts of independent electricals to 50MW small modules formula, with environmental compatible
Source, these power supplys are owned by power department, power consumer or third party, are specifically required to meet electric system and user,
Such as peak regulation, for outlying user or shopping centre and residential block power supply, save power transmission and transformation investment, improve power supply reliability etc..By
It is of great significance in distributed generation resource to Optimization of Energy Structure, promotion energy-saving and emission-reduction, realization sustainable economic development, in recent years
Come, China's distributed generation resource is quickly grown.But electric control between each power supply module of existing distributed power supply management system and
State is easy to interfere with each other, and the reliability of management system and safety be not high；Once distributed generation resource because failure is offline, is born
Load cannot power will be out of service, inevitably influences industrial production and daily life.
Utility model content
In order to overcome the disadvantages mentioned above of the prior art, the purpose of the utility model is to provide a kind of distributed power supply management systems
System, per there is independent current monitoring circuit all the way, can be respectively set per power supply unit all the way if having main line power supply unit
Early warning electric current and interruption current；Distributed power supply module is connect by RS485 bus with main power source module simultaneously, main power source mould
Block can monitor each way switch and state in real time；Since circuit design has used double-direction control, even if distributed power supply module
It breaks down and is disconnected with main power source module or main power source module is disconnected with control centre host, occurred distributed
The offline situation of power supply, the switch that can be yet loaded by switch enclosure normal control, does not influence circuit normal use.
Technical solution adopted by the utility model to solve its technical problems is：A kind of distributed power supply management system, packet
Include distributed power supply module, main power source module and control centre's host；The distributed power supply module passes through RS485 communication module
Main power source module is connected, is communicated to connect between the main power source module and control centre's host；The distributed power supply module packet
Power control unit and several power supply units are included, the power supply unit includes control relay circuit, current collection circuit and connects
Head CON1；The power control unit includes 1 foot of chip U1 and crystal oscillator Y1, the crystal oscillator Y1,3 feet difference
It is correspondingly connected with 5 feet, 6 feet of chip U1；25~28 feet of the chip U1 are separately connected the relay of several power supply units
Control circuit, 10~13 feet are separately connected the current collection circuit of several power supply units；The distributed power supply module connects
Enter load circuit and switch cassette in series with one, is equipped with several single-pole double-throw switch (SPDT)s inside the switch enclosure, the load circuit is set
There are several loads in parallel, use two-way control circuit, is disconnected even if distributed power supply module breaks down with main power source module
Connection or main power source module are disconnected with control centre host, the offline situation of distributed generation resource occur, also can be by opening
The switch for closing the load of box normal control, does not influence circuit normal use.
Preferably, the control relay circuit includes optocoupler chip U21, N channel field effect transistor Q1, two poles
2 feet of pipe D1 and relay chip U22, the optocoupler chip U21 connect any foot in 25~28 feet of chip U1,3 feet
By the grid of resistance R1 connection N channel field effect transistor Q1, the drain electrode of the N channel field effect transistor Q1 connects relay
3 feet of device chip U22, and pass through 4 feet of diode D1 connection 12V power supply and relay chip U22；The relay chip
1 foot of U22 is equipped with two-way switch, and 2 feet and 5 feet are switch contact, 2 feet of the relay chip U22 and the 3 of connector CON1
Foot connection, 5 feet of the relay chip U22 are connect with 2 feet of connector CON1.
Preferably, the current collection circuit includes operational amplifier chip U23 and current transformer chip U24, described
Any foot in 10~13 feet of the 4 feet connection chip U1 of operational amplifier chip U23, and pass through capacitor C1 and resistance in parallel
3 feet of R2 connection operational amplifier chip U23, and be grounded by resistance R3；1 foot of operational amplifier chip U23 passes through resistance
R4 connection 3.3V power supply, and be grounded respectively by capacitor C2 and resistance R5；3 feet of operational amplifier chip U23 pass sequentially through electricity
3 feet for hindering R6, capacitor C3 connection current transformer chip U24, connect between 3 feet and 4 feet of the current transformer chip U24
There is resistance R7,2 feet are connect with 1 foot of connector CON1, and 1 foot is connect with 1 foot of the relay chip U22.
Further, it is connected with resistance R8 between 1 foot and 3 feet of the crystal oscillator Y1, and crystal oscillator Y1
1 foot, 3 feet pass through capacitor C4, capacitor C5 ground connection respectively；20 feet of the chip U1 are grounded by resistance R9, and 7 feet pass through capacitor C6
It is grounded and passes through resistance R10 connection 3.3V power supply.
Preferably, the distributed power supply module includes the identical power supply unit of four circuit structures；It is only per having all the way
Early warning electric current and interruption current per power supply unit all the way can be respectively set in vertical current monitoring circuit；Distributed generation resource simultaneously
Module is connect by RS485 bus with main power source module, and main power source module can monitor each way switch and state in real time.
The power control unit further includes switch key K1~K4 and LED light DS1~DS4, is realized to each electricity
The independent control of source unit, it is simple to operate；Switch key K1~the K4 passes through the corresponding company of diode D10~D13 respectively
38~41 feet of chip U1 are connect, 38~41 feet of the chip U1 are connected to the base stage of triode Q2~Q5, three pole
The emitter connection 3.3V unit of pipe Q2~Q5 is simultaneously grounded by capacitor C7, and the collector of the triode Q2~Q5 connects respectively
The anode of LED light DS1~DS4 is connect, the cathode of LED light DS1~DS4 passes through the collection of resistance R11 connecting triode Q6
Electrode, the emitter ground connection of triode Q6, and 43 feet of base stage connection chip U1.
Preferably, the main power source module includes level-one reduction voltage circuit, second level reduction voltage circuit and is used for the power supply control
The three-level reduction voltage circuit of unit processed power supply, the level-one reduction voltage circuit include decompression chip U31, inductance L31, diode D31 and
Diode D32,2 feet of the decompression chip U31 are depressured 7 feet of chip U31 by resistance R31 connection, and pass through capacitor C31
Ground connection, and the cathode of diode D31 is connected, the anode of diode D31 is connected with VDD DC power supply；The decompression chip U31
1 foot by capacitor C32 connection decompression chip U31 3 feet and diode D32 cathode, the plus earth of diode D32；Institute
One end of the 3 feet connection inductance L31 of decompression chip U31 is stated, the other end of inductance L31 connects the one of 12V power supply and resistance R32
End, and pass through capacitor C33, C34, C35 ground connection in parallel；5 feet of the other end connection decompression chip U31 of resistance R32, and it is logical
Cross resistance R33 ground connection；6 feet of the decompression chip U31 are grounded by capacitor C36, resistance R34；4 feet of decompression chip U31 connect
Ground, 8 feet are hung empty；The second level reduction voltage circuit includes decompression chip U32, and 1 foot of decompression chip U32 connects the 12V power supply,
7 feet connect 5V power supply；The three-level reduction voltage circuit includes decompression chip U33, and 1 foot of decompression chip U33 connects the 5V power supply,
3 feet connect 3.3V power supply.
Specifically, the RS485 communication module includes chip U4, fuse RT1, fuse RT2 and several RS485 logical
Believe port, 1 foot, 2 feet, 4 feet of the chip U4 are separately connected 31 feet, 32 feet, 30 feet of chip U1, the 8 feet connection of chip U4
3.3V power supply, 5 feet ground connection, 6 feet connect cathode, the anode of D43 and one end of fuse RT2 of diode D41,7 feet connection two
The cathode of pole pipe D42, D43 and one end of fuse RT1；Diode D41 is connected and is grounded with the anode of diode D42；It protects
The other end of dangerous silk RT1 is equipped with the communication output end B, and is grounded by resistance R41；It is defeated that the other end of fuse RT2 is equipped with communication
The end A out, and by resistance R43 connection 3.3V power supply, resistance R42 is in series between the resistance R41 and resistance R43.
Several RS485 communication port include communication port P1 and communication port P2, communication port P1 and communication port
1 foot, 2 feet of P2 are separately connected the communication output end A, the communication output end B, and 5 feet, 6 feet connect VDD DC power supply, and 7 feet, 8 feet connect
Ground.
Further improve, the energy supply control module further includes debugging port P1,34 feet of the chip U1,37 feet,
7 feet are connected respectively 2 feet, 3 feet, 4 feet of the debugging port P1.
Compared with prior art, the utility model has the beneficial effects that：A kind of distributed power supply management system, if having
The early warning electricity per power supply unit all the way can be respectively set per there is independent current monitoring circuit all the way in main line distributed generation resource
Stream and interruption current；Distributed power supply module is connect by RS485 bus with main power source module simultaneously, and main power source module can be real
When monitor each way switch and state；Since circuit design has used double-direction control, even if distributed power supply module breaks down
It is disconnected with main power source module or main power source module is disconnected with control centre host, it is offline distributed generation resource occur
The case where, the switch that can be yet loaded by switch enclosure normal control does not influence circuit normal use.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the circuit diagram of power control unit.
Fig. 3 is the circuit diagram of power supply unit.
Fig. 4 is the circuit diagram of power control unit switch key and LED light.
Fig. 5 is the circuit diagram of main power source module.
Fig. 6 is the circuit diagram of RS485 communication module.
Specific embodiment
Now in conjunction with Detailed description of the invention, the present invention will be further described with embodiment：
Case study on implementation one：Please refer to Fig. 1 and Fig. 2, a kind of distributed power supply management system, including distributed power supply module 2,
Main power source module 3 and control centre's host 5；The distributed power supply module connects main power source mould by RS485 communication module 4
Block communicates to connect between the main power source module and control centre's host；The distributed power supply module includes that power supply control is single
Member and 4 power supply units, the power supply unit includes control relay circuit, current collection circuit and connector CON1；The electricity
Source control unit includes that 1 foot, 3 feet of chip U1 and crystal oscillator Y1, the crystal oscillator Y1 are connected respectively chip
5 feet, 6 feet of U1；25~28 feet of the chip U1 are separately connected the control relay circuit of several power supply units, 10~
13 feet are separately connected the current collection circuit of several power supply units；The distributed power supply module 2 accesses load circuit simultaneously
It connects with a switch enclosure 1, several single-pole double-throw switch (SPDT)s is equipped with inside the switch enclosure, the load circuit is equipped with the several of parallel connection
Load 6.
The chip U1 is MCU single-chip microcontroller, is set on circuit board, is communicated by RS485 communication module and main power source module,
Switch relay switch for controlling, acquires electric current.
Referring to Fig. 3, the control relay circuit include optocoupler chip U21, N channel field effect transistor Q1,
2 feet of diode D1 and relay chip U22, the optocoupler chip U21 connect any in 25~28 feet of chip U1
Foot, 3 feet pass through the grid of resistance R1 connection N channel field effect transistor Q1, and the drain electrode of the N channel field effect transistor Q1 connects
3 feet of contact relay chip U22, and pass through 4 feet of diode D1 connection 12V power supply and relay chip U22；The relay
1 foot of chip U22 is equipped with two-way switch, and 2 feet and 5 feet are switch contact, 2 feet and connector of the relay chip U22
3 feet of CON1 connect, and 5 feet of the relay chip U22 are connect with 2 feet of connector CON1.The relay chip use every
From control, the isolation of forceful electric power light current is realized.
The current collection circuit includes operational amplifier chip U23 and current transformer chip U24, the operation amplifier
Any foot in 10~13 feet of the 4 feet connection chip U1 of device chip U23, and fortune is connected with resistance R2 by capacitor C1 in parallel
3 feet of amplifier chip U23 are calculated, and are grounded by resistance R3；1 foot of operational amplifier chip U23 is connected by resistance R4
3.3V power supply, and be grounded respectively by capacitor C2 and resistance R5；3 feet of operational amplifier chip U23 pass sequentially through resistance R6,
3 feet of capacitor C3 connection current transformer chip U24, are connected with electricity between 3 feet and 4 feet of the current transformer chip U24
R7 is hindered, 2 feet are connect with 1 foot of connector CON1, and 1 foot is connect with 1 foot of the relay chip U22.Current transformer chip is adopted
Colleeting comb realizes real time monitoring electric current.
Resistance R8, and 1 foot of crystal oscillator Y1,3 feet point are connected between 1 foot and 3 feet of the crystal oscillator Y1
It Tong Guo not capacitor C4, capacitor C5 ground connection；20 feet of the chip U1 are grounded by resistance R9, and 7 feet are grounded and are led to by capacitor C6
Cross resistance R10 connection 3.3V power supply.
Referring to Fig. 4, the distributed power supply module includes the identical power supply unit of four circuit structures；The power supply control
Unit processed further includes switch key K1~K4 and LED light DS1~DS4；Switch key K1~the K4 passes through two poles respectively
Pipe D10~D13 is correspondingly connected with 38~41 feet of chip U1, and 38~41 feet of the chip U1 are connected to triode Q2~Q5
Base stage, the triode Q2~Q5 emitter connection 3.3V unit simultaneously be grounded by capacitor C7, the triode Q2~Q5
Collector be separately connected the anode of LED light DS1~DS4, the cathode of LED light DS1~DS4 is connected by resistance R11
Connect the collector of triode Q6, the emitter ground connection of triode Q6, and 43 feet of base stage connection chip U1.
Referring to Fig. 5, the main power source module includes level-one reduction voltage circuit, second level reduction voltage circuit and is used for the power supply
The three-level reduction voltage circuit of control unit power supply, the level-one reduction voltage circuit include decompression chip U31, inductance L31, diode D31
And diode D32,2 feet of the decompression chip U31 are depressured 7 feet of chip U31 by resistance R31 connection, and pass through capacitor
C31 ground connection, and the cathode of diode D31 is connected, the anode of diode D31 is connected with VDD DC power supply；The decompression chip
1 foot of U31 is depressured 3 feet of chip U31 and the cathode of diode D32, the plus earth of diode D32 by capacitor C32 connection；
One end of the 3 feet connection inductance L31 of the decompression chip U31, the other end of inductance L31 connect the one of 12V power supply and resistance R32
End, and pass through capacitor C33, C34, C35 ground connection in parallel；5 feet of the other end connection decompression chip U31 of resistance R32, and it is logical
Cross resistance R33 ground connection；6 feet of the decompression chip U31 are grounded by capacitor C36, resistance R34；4 feet of decompression chip U31 connect
Ground, 8 feet are hung empty；Level-one reduction voltage circuit is that direct current 24V turns direct current 12V power circuit, is the master of distributed power supply module circuit board
Want power supply circuit.
The second level reduction voltage circuit includes decompression chip U32, and 1 foot of decompression chip U32 connects the 12V power supply, 7 feet
5V power supply is connected, second level reduction voltage circuit is 5V isolated power supply circuit；The three-level reduction voltage circuit includes decompression chip U33, decompression
1 foot of chip U33 connects the 5V power supply, and 3 feet connect 3.3V power supply.Three-level reduction voltage circuit is that 5V turns 3.3V circuit, for electricity
The power supply of source control unit and RS485 communication module.
Referring to Fig. 6, the RS485 communication module includes chip U4, fuse RT1, fuse RT2 and several RS485
Communication port, 1 foot, 2 feet, 4 feet of the chip U4 are separately connected 31 feet, 32 feet, 30 feet of chip U1, and 8 feet of chip U4 connect
3.3V power supply, 5 feet ground connection are connect, 6 feet connect cathode, the anode of D43 and one end of fuse RT2 of diode D41, the connection of 7 feet
The cathode of diode D42, D43 and one end of fuse RT1；Diode D41 is connected and is grounded with the anode of diode D42；
The other end of fuse RT1 is equipped with the communication output end B, and is grounded by resistance R41；The other end of fuse RT2 is equipped with communication
The end A is exported, and by resistance R43 connection 3.3V power supply, is in series with resistance R42 between the resistance R41 and resistance R43.
Several RS485 communication port include communication port P1 and communication port P2, communication port P1 and communication port
1 foot, 2 feet of P2 are separately connected the communication output end A, the communication output end B, and 5 feet, 6 feet connect VDD DC power supply, and 7 feet, 8 feet connect
Ground.
In the implementation case, the energy supply control module further includes debugging port P1,34 feet of the chip U1,37 feet,
7 feet are connected respectively 2 feet, 3 feet, 4 feet of the debugging port P1；The model GD32F103C8T6 of the chip U1；Institute
State the model TP8485 of chip U4.
The major function of the utility model：A kind of distributed power supply management system, if there is main line distributed generation resource, often
There is independent current monitoring circuit all the way, early warning electric current and interruption current per power supply unit all the way can be respectively set；Simultaneously
Distributed power supply module is connect by RS485 bus with main power source module, and main power source module can monitor each way switch in real time
And state；Since circuit design has used double-direction control, disconnected even if distributed power supply module breaks down with main power source module
Connection or main power source module are disconnected with control centre host, the offline situation of distributed generation resource occur, also can be by opening
The switch for closing the load of box normal control, does not influence circuit normal use.
In conclusion after those skilled in the art read the utility model file, skill according to the present utility model
Art scheme and technical concept are not necessarily to creative mental labour and make other various corresponding conversion schemes, and it is practical new to belong to this
The range that type is protected.
Claims (6)
1. a kind of distributed power supply management system, it is characterised in that：Including distributed power supply module, main power source module and control
Central host processed；The distributed power supply module connects main power source module, the master by RS485 communication module
It is communicated to connect between power module and control centre's host；The distributed power supply module includes power control unit
With several power supply units, the power supply unit includes control relay circuit, current collection circuit and connector
CON1；The power control unit includes chip U1 and crystal oscillator Y1, and the 1 of the crystal oscillator Y1
Foot, 3 feet are connected respectively 5 feet of chip U1,6 feet；25~28 feet of the chip U1 are separately connected several electricity
The control relay circuit of source unit, 10~13 feet are separately connected the current collection circuit of several power supply units；Described point
Cloth power module access load circuit and with a switch cassette in series, inside the switch enclosure
Equipped with several single-pole double-throw switch (SPDT)s, the load circuit is equipped with several loads in parallel.
2. a kind of distributed power supply management system according to claim 1, it is characterised in that：The relay control
Circuit includes optocoupler chip U21, N channel field effect transistor Q1, diode D1 and relay chip
Any foot in 25~28 feet of the 2 feet connection chip U1 of U22, the optocoupler chip U21,3 feet are connected by resistance R1
The grid of N channel field effect transistor Q1 is connect, the drain electrode of the N channel field effect transistor Q1 connects the 3 of relay chip U22
Foot, and pass through 4 feet of diode D1 connection 12V power supply and relay chip U22；1 foot of the relay chip U22 is equipped with double
To switch, 2 feet and 5 feet are switch contact, and 2 feet of the relay chip U22 are connect with 3 feet of connector CON1, it is described after
5 feet of electric appliance chip U22 are connect with 2 feet of connector CON1.
3. a kind of distributed power supply management system according to claim 2, it is characterised in that：The current acquisition electricity
Road includes the 4 feet connection of operational amplifier chip U23 and current transformer chip U24, the operational amplifier chip U23
Any foot in 10~13 feet of chip U1, and the 3 of operational amplifier chip U23 is connected with resistance R2 by capacitor C1 in parallel
Foot, and be grounded by resistance R3；1 foot of operational amplifier chip U23 passes through electricity by resistance R4 connection 3.3V power supply respectively
Hold C2 and resistance R5 ground connection；3 feet of operational amplifier chip U23 pass sequentially through resistance R6, capacitor C3 connection current transformer core
3 feet of piece U24 are connected with resistance R7,1 foot of 2 feet and connector CON1 between 3 feet and 4 feet of the current transformer chip U24
Connection, 1 foot are connect with 1 foot of the relay chip U22.
4. a kind of distributed power supply management system according to claim 1, it is characterised in that：The distributed power supply module
Including the identical power supply unit of four circuit structures；The power control unit further includes switch key K1~K4 and LED indication
Lamp DS1~DS4；Switch key K1~the K4 passes through 38~41 feet that diode D10~D13 is correspondingly connected with chip U1 respectively,
38~41 feet of the chip U1 are connected to the base stage of triode Q2~Q5, the emitter connection of the triode Q2~Q5
3.3V unit is simultaneously grounded by capacitor C7, and the collector of the triode Q2~Q5 is separately connected LED light DS1~DS4's
Anode, the cathode of LED light DS1~DS4 pass through the collector of resistance R11 connecting triode Q6, the emitter of triode Q6
Ground connection, and 43 feet of base stage connection chip U1.
5. a kind of distributed power supply management system according to claim 1, it is characterised in that：The main power source module includes
Level-one reduction voltage circuit, second level reduction voltage circuit and the three-level reduction voltage circuit for powering to the power control unit, the level-one
Reduction voltage circuit includes that decompression chip U31, inductance L31, diode D31 and diode D32,2 feet of the decompression chip U31 pass through
Resistance R31 connection is depressured 7 feet of chip U31, and is grounded by capacitor C31, and connect the cathode of diode D31, diode D31
Anode be connected with VDD DC power supply；It is described decompression chip U31 1 foot by capacitor C32 connection be depressured chip U31 3 feet with
The cathode of diode D32, the plus earth of diode D32；One end of the 3 feet connection inductance L31 of the decompression chip U31, electricity
Feel one end of the other end connection 12V power supply and resistance R32 of L31, and passes through capacitor C33, C34, C35 ground connection in parallel；Resistance
5 feet of the other end connection decompression chip U31 of R32, and be grounded by resistance R33；6 feet of the decompression chip U31 pass through electricity
Hold C36, resistance R34 ground connection；It is depressured the 4 feet ground connection of chip U31,8 feet are hung empty；The second level reduction voltage circuit includes decompression chip
U32,1 foot of decompression chip U32 connect the 12V power supply, and 7 feet connect 5V power supply；The three-level reduction voltage circuit includes decompression core
Piece U33,1 foot of decompression chip U33 connect the 5V power supply, and 3 feet connect 3.3V power supply.
6. a kind of distributed power supply management system according to claim 1, it is characterised in that：The RS485 communication module
Including chip U4, fuse RT1, fuse RT2 and several RS485 communication port, 1 foot of the chip U4,2 feet, 4 feet difference
31 feet, 32 feet, 30 feet of chip U1 are connected, 8 feet of chip U4 connect 3.3V power supply, 5 feet ground connection, and 6 feet connect diode D41's
One end of cathode, the anode of D43 and fuse RT2,7 feet connect the cathode of diode D42, D43 and one end of fuse RT1；
Diode D41 is connected and is grounded with the anode of diode D42；The other end of fuse RT1 is equipped with the communication output end B, and logical
Cross resistance R41 ground connection；The other end of fuse RT2 is equipped with the communication output end A, and by resistance R43 connection 3.3V power supply, described
Resistance R42 is in series between resistance R41 and resistance R43.
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| CN201820331635.3U CN208174360U (en) | 2018-03-12 | 2018-03-12 | A kind of distributed power supply management system |
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| CN201820331635.3U CN208174360U (en) | 2018-03-12 | 2018-03-12 | A kind of distributed power supply management system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199486A (en) * | 2018-03-12 | 2018-06-22 | 广州市浩翔计算机科技有限公司 | A kind of distributed power supply management system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199486A (en) * | 2018-03-12 | 2018-06-22 | 广州市浩翔计算机科技有限公司 | A kind of distributed power supply management system |
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Effective date of registration: 20201014 Address after: Room 120, building G1, No. 31, Kefeng Road, Huangpu District, Guangzhou City, Guangdong Province (self declaration) Patentee after: Guangzhou Haoxiang Information Technology Co.,Ltd. Address before: 510000 Guangzhou, Guangzhou, Guangdong, Tianhe District, Si Cheng Road, No. six, building 4, building 502 room (only for office use) Patentee before: GUANGZHOU HIGHSUNTECH COMPUTER TECHNOLOGY Co.,Ltd. |
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