CN207218558U - A kind of power-supply system of intelligent electric meter - Google Patents
A kind of power-supply system of intelligent electric meter Download PDFInfo
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- CN207218558U CN207218558U CN201721257055.6U CN201721257055U CN207218558U CN 207218558 U CN207218558 U CN 207218558U CN 201721257055 U CN201721257055 U CN 201721257055U CN 207218558 U CN207218558 U CN 207218558U
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Abstract
The utility model discloses a kind of power-supply system of intelligent electric meter, including：Filtering and protection module, AC/DC conversion modules, the first DC/DC conversion modules, the first rectifier, Fault Isolation module, charging module, battery module, the second rectifier, the 2nd DC/DC conversion modules and isolated form DC/DC converter units；Filtering and protection module connect the first rectifier and Fault Isolation module respectively after being sequentially connected AC/DC conversion modules and the first DC/DC conversion modules；After the output end of Fault Isolation module is sequentially connected charging lump, battery module and the second rectifier, the output end of the first rectifier is reconnected；The output end of first rectifier is also respectively connected with the 2nd DC/DC conversion modules and isolated form DC/DC conversion modules.The compatible single-phase, phase three-wire three of the utility model, three-phase four wire system；After system cut-off, ammeter can also work within a period of time, to preserve related data, and be uploaded to host computer.
Description
Technical field
It the utility model is related to power control field, more particularly to a kind of power-supply system of intelligent electric meter.
Background technology
Intelligent electric meter as the intelligent electrical energy data acquiring terminal in energy internet platform, realize data collection and on
Pass, and its need of work has power supply auxiliary, power-supply system can be rated as " heart " of intelligent electric meter.Reliable electricity reasonable in design
Source system turns into the mission critical in intelligent electric meter, and conclusive effect is also played to the quality of intelligent electric meter.Currently for list
Phase system, phase three-wire three and three-phase four wire system need independent Power Management Design, or the power-supply system input of three-phase kilowatt-hour meter
Draw single-phase, working power power-off when phase shortage be present and risk that ammeter can not work.In addition particular for present energy internet
Requirement, the collection of multi-energy data, the big data analysis based on data, the integrality of data is most important, during system cut-off,
Need requirement ammeter to be worked within a period of time, to preserve related data, and be uploaded to host computer.Therefore, prior art is deposited
In defect, it is necessary to improve.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of power-supply system of intelligent electric meter.
The technical solution of the utility model is as follows：A kind of power-supply system of intelligent electric meter, including：Filtering and protection module,
AC/DC conversion modules, the first DC/DC conversion modules, the first rectifier, Fault Isolation module, charging module, battery module,
Two rectifiers, the 2nd DC/DC conversion modules and isolated form DC/DC converter units；
The filtering and the input connection civil power of protection module；
The input of the AC/DC conversion modules is electrically connected with the output end of filtering and protection module；
The output end of the input connection AC/DC conversion modules of the first DC/DC conversion modules, the first DC/DC conversion
The output end of module connects the first rectifier and the input of Fault Isolation module respectively；
After the output end of the Fault Isolation module is sequentially connected charging module, battery module and the second rectifier, then connect
Connect the output end of the first rectifier；
The output end of first rectifier is also respectively connected with the 2nd DC/DC conversion modules and isolated form DC/DC becomes mold changing
Block.
Further, the filtering and protection module coordinate single phase poaer supply, phase three-wire three power supply or three-phase four-wire power to match somebody with somebody
One or more uses in putting；The filtering and protection module include：Fuse F1, fuse F2, fuse F3, electric capacity
C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10, electric capacity C11, electricity
Hold C12, electric capacity C13, electric capacity C14, piezo-resistance MOV1, piezo-resistance MOV2, piezo-resistance MOV3, piezo-resistance MOV4, difference
Mould inductance L1, differential mode inductance L2, differential mode inductance L3, differential mode inductance L4, gas-discharge tube GAS1；Described piezo-resistance MOV4 one end
Gas-discharge tube GAS1 is met, the other end is N points, and N points connect piezo-resistance MOV1, piezo-resistance MOV2, piezo-resistance respectively
MOV3；The piezo-resistance MOV1, piezo-resistance MOV2, the piezo-resistance MOV3 other end connect fuse F1, fuse respectively
F2, fuse F3；The electric capacity C1, electric capacity C2, electric capacity C3 are connected in parallel on piezo-resistance MOV1, piezo-resistance MOV2, pressure-sensitive respectively
Resistance MOV3 both ends；The one end of gas-discharge tube GAS1 away from piezo-resistance MOV4 is G points, and electric capacity C4 one end connects G
Point, it is another to terminate between fuse F1 and piezo-resistance MOV1；Electric capacity C5 one end connection, it is another terminate at fuse F2 with
Between piezo-resistance MOV2；Electric capacity C6 one end connection N points, it is another to terminate between fuse F3 and piezo-resistance MOV3；Electricity
Hold C7 one end connection G points, it is another to terminate between piezo-resistance MOV3 and piezo-resistance MOV4；A differential mode inductance L1 termination
Between fuse F1 and piezo-resistance MOV1, another termination capacitor C8 is followed by N points；A differential mode inductance L2 end is connected on fuse
Between F2 and piezo-resistance MOV2, another termination capacitor C9 is followed by N points；A differential mode inductance L3 end be connected on fuse F3 with it is pressure-sensitive
Between resistance MOV3, another termination capacitor C10 is followed by N points；Electric capacity C11 mono- terminates G points, another to terminate at differential mode inductance L1 and electricity
Between appearance C8；Electric capacity C12 is connected between differential mode inductance L2 and differential mode inductance L3；Electric capacity C13 mono- terminates G points, another to terminate at difference
Between mould inductance L3 and electric capacity C10；Electric capacity C14 is connected between G points and N points.
Further, the AC/DC conversion modules include：Diode D1, diode D2, diode D3, diode D4,
Diode D5, diode D6, electric capacity C15 and electric capacity C16；A termination capacitor C16 of the electric capacity C15, the other end connect two respectively
Pole pipe D1, diode D3 and diode D5；After diode D2 and the diode D1 other ends are connected, another termination capacitor C16's is another
One end；After diode D4 and the diode D3 other ends are connected, another termination capacitor C16 other end；Diode D6 and diode
After the series connection of the D5 other ends, another termination capacitor C16 other end
Further, the topology that the first DC/DC conversion modules use includes：Single-ended reverse exciting topology, both-end flyback are opened up
Flutter, half-bridge transformation isolator topological sum full-bridge isolator topology.
Further, the output end of the first DC/DC conversion modules also connects internal communication module.
Further, the output termination internal pull-up circuit of the 2nd DC/DC conversion modules.
Further, the output termination external communication module of the isolated form DC/DC converter units or/and outside work electricity
Lu Zhong.
Further, the Fault Isolation module plays Fault Isolation to charging module；The charging module is used for electricity
The charging of pond module.
Further, first rectifier and the second rectifier are respectively rectifying tube Da and rectifying tube Db.
Further, the Fault Isolation module is fuse cutout Fa.
Using such scheme, the utility model provides a kind of power-supply system of intelligent electric meter, compatible single-phase, three-phase three
Line, three-phase four wire system；The utility model can realize the collection of multi-energy data, be easy to the big data of energy data to analyze；This reality
With new after system cut-off, ammeter can also work within a period of time, to preserve related data, and be uploaded to host computer.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is circuit theory diagrams of the present utility model.
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Shown in reference picture 1, the utility model provides a kind of power-supply system of intelligent electric meter, including：Filtering and protection module,
AC/DC conversion modules, the first DC/DC conversion modules, the first rectifier, Fault Isolation module, charging module, battery module,
Two rectifiers, the 2nd DC/DC conversion modules and isolated form DC/DC converter units.
The filtering and the input connection civil power of protection module；The power supply of filtering and protection module input can order phase
Any one in power supply, phase three-wire three power supply and three-phase four-wire power.Filtering and protection module include several filter capacitors,
Filter inductance and fuse, filter capacitor are connected in parallel between each phase or between phase and ground；Filter inductance is connected in phase；Fuse
It is connected in phase；Filter capacitor, filter inductance and fuse do according to specific EMC test status and suitably deleted.
The input of the AC/DC conversion modules is electrically connected with the output end of filtering and protection module, AC/DC conversion
Module is used to alternating current being changed into direct current.The input of the first DC/DC conversion modules connects the defeated of AC/DC conversion modules
Go out end, the output end of the first DC/DC conversion modules connects the first rectifier and the input of Fault Isolation module respectively；Described
The topology that one DC/DC conversion modules use includes：Single-ended reverse exciting topology, both-end flyback topologies, half-bridge transformation isolator topological sum
Full-bridge isolator topology.The output end of the first DC/DC conversion modules also connects internal communication module.
After the output end of the Fault Isolation module is sequentially connected charging module, battery module and the second rectifier, then connect
Connect the output end of the first rectifier；The Fault Isolation module plays Fault Isolation to charging module, as a kind of embodiment,
The Fault Isolation module is fuse cutout Fa.The charging module is used for the charging of battery module.
The output end of first rectifier is also respectively connected with the 2nd DC/DC conversion modules and isolated form DC/DC becomes mold changing
Block.The output termination internal pull-up circuit of the 2nd DC/DC conversion modules.The output of the isolated form DC/DC converter units
Terminate in external communication module or/and outside operating circuit.As a kind of embodiment, first rectifier and the second rectifier
Respectively rectifying tube Da and rectifying tube Db.
Utility model works principle：Civil power is inputted by filtering and protection module, then will by AC/DC conversion modules
It is direct current to exchange whole, DC current after the first DC/DC conversion modules, by HVDC be converted into low-voltage dc voltage V1 and
Voltage V6.Voltage V1 inputs charging module after overcurrent fuse F1, and charging module output voltage V2 is to charging battery module.Battery
The voltage V3 of module output converges after rectifier Db with voltage V1 by rectifier Da voltage, forms voltage Vbus.Electricity
Pressure Vbus forms voltage V4 after the 2nd DC/DC conversion modules, and voltage V4 is ELV voltages, and voltage V4 is used for internal work
Circuit is powered；Voltage Vbus forms voltage V5 after isolated form DC/DC conversion modules, and voltage V5 is SELV voltages, voltage V5
For being SELV voltages to external communication module or the power supply of outside operating circuit, voltage V6, voltage V6 is for giving internal communication mould
Block is powered.
Shown in reference picture 2, as a kind of embodiment, the filtering and protection module include：Fuse F1, fuse F2,
Fuse F3, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity
C10, electric capacity C11, electric capacity C12, electric capacity C13, electric capacity C14, piezo-resistance MOV1, piezo-resistance MOV2, piezo-resistance MOV3, pressure
Quick resistance MOV4, differential mode inductance L1, differential mode inductance L2, differential mode inductance L3, differential mode inductance L4, gas-discharge tube GAS1；The pressure
Quick resistance MOV4 mono- terminates gas-discharge tube GAS1, and the other end is N points, and N points connect piezo-resistance MOV1, piezo-resistance respectively
MOV2, piezo-resistance MOV3；The piezo-resistance MOV1, piezo-resistance MOV2, the piezo-resistance MOV3 other end connect molten respectively
Disconnected device F1, fuse F2, fuse F3；The electric capacity C1, electric capacity C2, electric capacity C3 are connected in parallel on piezo-resistance MOV1, pressure-sensitive respectively
Resistance MOV2, piezo-resistance MOV3 both ends；The one end of gas-discharge tube GAS1 away from piezo-resistance MOV4 is G points, electric capacity C4
One end connection G points, it is another to terminate between fuse F1 and piezo-resistance MOV1；Electric capacity C5 one end connection, another termination
Between fuse F2 and piezo-resistance MOV2；Electric capacity C6 one end connection N points, it is another to terminate at fuse F3 and piezo-resistance
Between MOV3；Electric capacity C7 one end connection G points, it is another to terminate between piezo-resistance MOV3 and piezo-resistance MOV4；Differential mode electricity
A sense L1 end is connected between fuse F1 and piezo-resistance MOV1, and another termination capacitor C8 is followed by N points；Differential mode inductance L2's
One end is connected between fuse F2 and piezo-resistance MOV2, and another termination capacitor C9 is followed by N points；A differential mode inductance L3 end is connected on
Between fuse F3 and piezo-resistance MOV3, another termination capacitor C10 is followed by N points；Electric capacity C11 mono- terminates G points, another termination
Between differential mode inductance L1 and electric capacity C8；Electric capacity C12 is connected between differential mode inductance L2 and differential mode inductance L3；Electric capacity C13 mono- terminates G
Point, it is another to terminate between differential mode inductance L3 and electric capacity C10；Electric capacity C14 is connected between G points and N points.
Described filtering and protection module, for single-phase electric meter, its input is single-phase input and the earth；For phase three-wire three
System, it is R lines, S lines, T lines and the earth that it, which inputs three lines,；For three-phase four wire system, it inputs three lines and adds center line to be R lines, S
Line, T lines, N lines and the earth；In filtering and protection module, filter capacitor is connected in parallel between alternate or phase and ground, filter inductance string
It is associated in phase, fuse is connected in phase；The part is not all of needing to have, and can be done according to specific EMC test status
Suitably delete；
The AC/DC conversion modules coordinate one kind in single phase poaer supply, phase three-wire three power supply or three-phase four-wire power configuration
Or a variety of uses；The AC/DC conversion modules include：Diode D1, diode D2, diode D3, diode D4, diode
D5, diode D6, electric capacity C15 and electric capacity C16；A termination capacitor C16 of the electric capacity C15, the other end connect respectively diode D1,
Diode D3 and diode D5；After diode D2 and the diode D1 other ends are connected, another termination capacitor C16 other end；Two
After pole pipe D4 and the diode D3 other ends are connected, another termination capacitor C16 other end；Diode D6 and the diode D5 other ends
After series connection, another termination capacitor C16 other end.
The first described DC/DC conversion modules, including transformer T1, metal-oxide-semiconductor Q1, diode D7, electric capacity C17 and chip
U1；Metal-oxide-semiconductor Q1 connects with transformer T1, and is connected to electric capacity C16 negative electrode；U1 is connected with metal-oxide-semiconductor Q1 driving, drives metal-oxide-semiconductor
Q1；Transformer T1 secondary is connected with diode D7 anodes, electric capacity C17 be connected across diode D7 negative electrodes and the transformer T1 other ends it
Between；Diode D7 negative electrodes are the first DC/DC conversion modules, and its voltage is 12V, and transformer T1 is basic insulation；Chip U1 type
Number optional UC3844.Wherein, diode D8 and diode D9 is respectively the first rectifier and the second rectifier.
Described battery module U3 is 7.4V 500mAH lithium batteries, and output voltage is in 5.6V between 8.4V；Described
Charging module input serial fuse F4 (i.e. Fault Isolation module) is connected with diode D7 negative electrodes afterwards, output end and battery mould
Block is connected, charging voltage 8.4V, and BQ24103 may be selected in charging module sampling A/D chip U2 model；
The voltage of diode D7 negative electrodes and diode D9 negative electrodes obtains Vbus after collecting, Vbus voltage ranges be 5.6V~
12V；The 2nd DC/DC conversion modules are shown in chip U4, and using BUCK conversion chip TPS54331, it is exported chip U4
Voltage is 5V；It is chip U5 that what the circuit of 5V voltage outputs was connected wherein loads all the way, and chip U5 is using BUCK conversion chips
MPQ2143,5V is converted into 3.3V；
The isolated form DC/DC conversion modules are chip U3, and chip U3 converts chip F0505XT-1WR2 using BUCK,
SELV 5V voltages are exported, other external equipments are connected to for external communication/interface circuit power supply and by external interface；Vbus
Voltage is also drawn for other power supplies.
In summary, the utility model provides a kind of power-supply system of intelligent electric meter, compatible single-phase, phase three-wire three, three
Phase four-wire system；The utility model can realize the collection of multi-energy data, be easy to the big data of energy data to analyze；The utility model
After system cut-off, ammeter can also work within a period of time, to preserve related data, and be uploaded to host computer.
Preferred embodiment of the present utility model is these are only, is not limited to the utility model, it is all in this practicality
All any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (10)
- A kind of 1. power-supply system of intelligent electric meter, it is characterised in that including：Filtering and protection module, AC/DC conversion modules, the One DC/DC conversion modules, the first rectifier, Fault Isolation module, charging module, battery module, the second rectifier, the 2nd DC/ DC conversion modules and isolated form DC/DC converter units；The filtering and the input connection civil power of protection module；The input of the AC/DC conversion modules is electrically connected with the output end of filtering and protection module；The output end of the input connection AC/DC conversion modules of the first DC/DC conversion modules, the first DC/DC conversion modules Output end connect the first rectifier and the input of Fault Isolation module respectively；After the output end of the Fault Isolation module is sequentially connected charging module, battery module and the second rectifier, the is reconnected The output end of one rectifier；The output end of first rectifier is also respectively connected with the 2nd DC/DC conversion modules and isolated form DC/DC conversion modules.
- 2. the power-supply system of intelligent electric meter according to claim 1, it is characterised in that the filtering and protection module coordinate One or more uses in single phase poaer supply, phase three-wire three power supply or three-phase four-wire power configuration；The filtering and protection module Including：Fuse F1, fuse F2, fuse F3, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electricity Hold C7, electric capacity C8, electric capacity C9, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13, electric capacity C14, piezo-resistance MOV1, pressure-sensitive Resistance MOV2, piezo-resistance MOV3, piezo-resistance MOV4, differential mode inductance L1, differential mode inductance L2, differential mode inductance L3, differential mode inductance L4, gas-discharge tube GAS1；The piezo-resistance MOV4 mono- terminates gas-discharge tube GAS1, and the other end is N points, and N points connect respectively Piezo-resistance MOV1, piezo-resistance MOV2, piezo-resistance MOV3；The piezo-resistance MOV1, piezo-resistance MOV2, piezo-resistance The MOV3 other end meets fuse F1, fuse F2, fuse F3 respectively；The electric capacity C1, electric capacity C2, electric capacity C3 are in parallel respectively Piezo-resistance MOV1, piezo-resistance MOV2, piezo-resistance MOV3 both ends；Gas-discharge tube GAS1 is away from piezo-resistance MOV4 One end be G points, electric capacity C4 one end connection G points are another to terminate between fuse F1 and piezo-resistance MOV1；Electric capacity C5's One end connects, another to terminate between fuse F2 and piezo-resistance MOV2；Electric capacity C6 one end connection N points, it is another to terminate at Between fuse F3 and piezo-resistance MOV3；Electric capacity C7 one end connection G points, it is another to terminate at piezo-resistance MOV3 and pressure-sensitive electricity Between resistance MOV4；A differential mode inductance L1 end is connected between fuse F1 and piezo-resistance MOV1, and another termination capacitor C8 is followed by N Point；A differential mode inductance L2 end is connected between fuse F2 and piezo-resistance MOV2, and another termination capacitor C9 is followed by N points；Differential mode An inductance L3 end is connected between fuse F3 and piezo-resistance MOV3, and another termination capacitor C10 is followed by N points；Electric capacity C11 one end G points are connect, it is another to terminate between differential mode inductance L1 and electric capacity C8；Electric capacity C12 is connected between differential mode inductance L2 and differential mode inductance L3； Electric capacity C13 mono- terminates G points, another to terminate between differential mode inductance L3 and electric capacity C10；Electric capacity C14 is connected between G points and N points.
- 3. the power-supply system of intelligent electric meter according to claim 1, it is characterised in that the AC/DC conversion modules coordinate One or more uses in single phase poaer supply, phase three-wire three power supply or three-phase four-wire power configuration；The AC/DC conversion modules bag Include：Diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, electric capacity C15 and electric capacity C16；Institute An electric capacity C15 termination capacitor C16 is stated, the other end meets diode D1, diode D3 and diode D5 respectively；Diode D2 and two After the series connection of the pole pipe D1 other ends, another termination capacitor C16 other end；After diode D4 and the diode D3 other ends are connected, separately The one termination capacitor C16 other end；After diode D6 and the diode D5 other ends are connected, another termination capacitor C16 other end.
- 4. the power-supply system of intelligent electric meter according to claim 1, it is characterised in that the first DC/DC conversion modules The topology of use includes：Single-ended reverse exciting topology, both-end flyback topologies, half-bridge transformation isolator topological sum full-bridge isolator topology.
- 5. the power-supply system of intelligent electric meter according to claim 1, it is characterised in that the first DC/DC conversion modules Output end be also connected with internal communication module.
- 6. the power-supply system of intelligent electric meter according to claim 1, it is characterised in that the 2nd DC/DC conversion modules Output end connection internal pull-up circuit.
- 7. the power-supply system of intelligent electric meter according to claim 1, it is characterised in that the isolated form DC/DC becomes mold changing In the output termination external communication module of block or/and outside operating circuit.
- 8. the power-supply system of intelligent electric meter according to claim 1, it is characterised in that the Fault Isolation module is to charging Module plays Fault Isolation；The charging module is used for the charging of battery module.
- 9. the power-supply system of intelligent electric meter according to claim 1, it is characterised in that first rectifier and second whole It is respectively rectifying tube Da and rectifying tube Db to flow device.
- 10. the power-supply system of intelligent electric meter according to claim 1, it is characterised in that the Fault Isolation module is molten Disconnect and close Fa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721257055.6U CN207218558U (en) | 2017-09-27 | 2017-09-27 | A kind of power-supply system of intelligent electric meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721257055.6U CN207218558U (en) | 2017-09-27 | 2017-09-27 | A kind of power-supply system of intelligent electric meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207218558U true CN207218558U (en) | 2018-04-10 |
Family
ID=61819587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721257055.6U Withdrawn - After Issue CN207218558U (en) | 2017-09-27 | 2017-09-27 | A kind of power-supply system of intelligent electric meter |
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| CN (1) | CN207218558U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107623455A (en) * | 2017-09-27 | 2018-01-23 | 深圳点亮新能源技术有限公司 | A kind of power-supply system of intelligent electric meter |
-
2017
- 2017-09-27 CN CN201721257055.6U patent/CN207218558U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107623455A (en) * | 2017-09-27 | 2018-01-23 | 深圳点亮新能源技术有限公司 | A kind of power-supply system of intelligent electric meter |
| CN107623455B (en) * | 2017-09-27 | 2023-08-22 | 深圳市富优镁科技有限公司 | Power supply system of intelligent ammeter |
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| TR01 | Transfer of patent right |
Effective date of registration: 20220711 Address after: 518000 25062505b, 06, building a, electronic technology building, No. 2070, Shennan Middle Road, Fuqiang community, Huaqiang North Street, Futian District, Shenzhen, Guangdong Province Patentee after: Shenzhen Fuyou Magnesium Technology Co.,Ltd. Address before: 518000 room 402, building 22, chentian Industrial Zone, Baomin Second Road, Xixiang street, Bao'an District, Shenzhen, Guangdong Province Patentee before: SHENZHEN LIGHTING NEW ENERGY TECHNOLOGY CO.,LTD. |
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