CN202798128U - Independent photovoltaic power supply system with self-starting function - Google Patents
Independent photovoltaic power supply system with self-starting function Download PDFInfo
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- CN202798128U CN202798128U CN2012204695896U CN201220469589U CN202798128U CN 202798128 U CN202798128 U CN 202798128U CN 2012204695896 U CN2012204695896 U CN 2012204695896U CN 201220469589 U CN201220469589 U CN 201220469589U CN 202798128 U CN202798128 U CN 202798128U
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- 238000012544 monitoring process Methods 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 2
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model belongs to the technical field of photovoltaic power supplying, and particularly relates to an independent photovoltaic power supply system with a self-starting function. The technical scheme includes that by the controlling of a system controlling and control panel module and automatic power regulation achieved through a power electronic circuit, after abnormal shutdown of the system, while power supply power paths of conventional loads are turned off and emergency power supply paths are closed to be conducted, a photovoltaic power rapid storage path and a photovoltaic power self-starting power supply power path are conducted, so that the photovoltaic power supply system to complete automatic starting to enter a normal operation state. For users without technical capacities and maintenance conditions in remote areas, waiting for help is not needed, the system enters a normal power generation and supply state through self-starting, and accordingly, system utilization and maintenance investment of users is reduced, great convenience is brought for users, the photovoltaic power supply system using efficiency is improved greatly, the device and solar resource using rate is increased, and the user investment benefits are increased.
Description
Technical field
The utility model belongs to photovoltaic generation power supply technique field, is specifically related to a kind of independent photovoltaic electric power system with self-starting function.
Background technology
The independent photovoltaic electric power system namely often say from net photovoltaic power supply system, be widely used in remote areas without electricity, and progress and development along with photovoltaic technology and industry, cost constantly reduces, supply at first the simple and easy independent photovoltaic electric power system of microminiature of the dc electric apparatus such as illumination as main take tens watts of power, develop into gradually several hectowatts to tens of kilowatts and have the inverter function take Alternating Current Power Supply as main independent photovoltaic electric power system, system capability constantly promotes, and also makes thus systems technology performance and system's O﹠M increase difficulty.According to prior art and product; the necessary condition of its work of independent photovoltaic electric power system is exactly the electric power that starts of system must be secure; (bearing power is excessive when unusual the use; the shutdown of inverter protectiveness) needs manually again starting up system; accumulator electric-quantity is crossed low or during fault; situation low and that the nothing electricity can supply can occur powering; system will out of servicely maybe can not start and entered running status this moment; and system can not be the storage battery electric power storage owing to out of service; that is: in system because not satisfying service condition or using misoperation to enter that protectiveness is shut down and the non-hardware fault of system or damage when causing shutting down; can not recover voluntarily and self-starting; necessary manpower intervention; in remote districts for without technical capability with safeguard for the user of condition; just must wait for rescue; increase the cost of system's O﹠M and caused the custom system generating and out of use defective, greatly reduced the utilance of equipment and solar energy resources.
Summary of the invention
In order to overcome the defects of prior art and product, by autostart function and corresponding component being set in the undamaged cancel closedown situation of system, after it is shut down voluntarily electric power storage with power supply and automatically start and enter running status, the utility model proposes a kind of independent photovoltaic electric power system with self-starting function for this reason, comprise: photovoltaic electrification component, the monitoring and protecting circuit, photovoltaic controller, inverter, the electric capacity electric storage means, the threshold switch circuit, photovoltaic direct-furnish electric-controlled switch, discharge and recharge dispensable circuit, photovoltaic inversion power supply electric-controlled switch, photovoltaic direct-furnish counterflow-preventing circuit, accumulating system power supply counterflow-preventing circuit, electric power storage Alternating Current Power Supply threshold circuit, system power supply and circuit, system's control and control panel module, batteries, the DC load port, the AC load port, emergency load port and emergency electric power bus consist of; It is characterized in that:
Photovoltaic electrification component connects the monitoring and protecting circuit and connects the emergency load port by photovoltaic direct-furnish electric-controlled switch and emergency electric power bus;
Photovoltaic electrification component connects the monitoring and protecting circuit and connects the electric capacity electric storage means by photovoltaic direct-furnish electric-controlled switch and emergency electric power bus;
Photovoltaic electrification component connects the monitoring and protecting circuit and also is connected in series in turn photovoltaic direct-furnish counterflow-preventing circuit, system power supply and circuit, system's control and control panel module by photovoltaic direct-furnish electric-controlled switch and emergency electric power bus connect threshold switching circuit;
Photovoltaic electrification component connects the monitoring and protecting circuit and connects the electric capacity electric storage means by photovoltaic direct-furnish electric-controlled switch and emergency electric power bus, also is connected in series in turn photovoltaic direct-furnish counterflow-preventing circuit, system power supply and circuit, system's control and control panel module by electric capacity electric storage means connect threshold switching circuit;
Photovoltaic electrification component in turn tandem connection monitoring protective circuit, photovoltaic controller, photovoltaic inversion supplies automatically controlled switch, inverter and AC load port;
Photovoltaic electrification component in turn tandem connection monitoring protective circuit, photovoltaic controller, discharge and recharge dispensable circuit and batteries;
Batteries connects the DC load port by discharging and recharging dispensable circuit;
Batteries is connected in series electric power storage Alternating Current Power Supply threshold circuit, photovoltaic inversion for automatically controlled switch, inverter and AC load port in turn by discharging and recharging dispensable circuit;
Batteries is connected in series accumulating system power supply counterflow-preventing circuit, system power supply and circuit and system's control and control panel module in turn by discharging and recharging dispensable circuit;
System control and control panel module by system bus connect respectively monitoring and protecting circuit, photovoltaic direct-furnish electric-controlled switch, discharge and recharge dispensable circuit, the photovoltaic inversion is for automatically controlled switch;
A kind of independent photovoltaic electric power system with self-starting function of the utility model, described photovoltaic direct-furnish electric-controlled switch is the normally closed electric-controlled switch that closes.
A kind of independent photovoltaic electric power system with self-starting function of the utility model, described photovoltaic inversion power supply electric-controlled switch is that normal off is opened electric-controlled switch.
Enforcement by technical solutions of the utility model, when system's normal boot-strap moves, controlled by system's control and control panel module (10) after the start, turn-off photovoltaic direct-furnish electric-controlled switch (7a) and control photovoltaic inversion power supply electric-controlled switch (7c) closure, make the photovoltaic power supply system enter normal operation power supply state.
When running into the shutdown of photovoltaic power supply system exception; no longer need again starting up system of manual intervention; make system because not satisfying service condition or using misoperation to enter that protectiveness is shut down and the non-hardware fault of system or damage when causing shutting down; technical solutions of the utility model can realize the automatic recovery system operation; in remote districts for without technical capability with safeguard for the user of condition; need not to wait for rescue; system enters the running status of normal power generation power supply by self-starting; for the user has reduced the investment of system's O﹠M and has brought very big facility to user's use; greatly improved the service efficiency of photovoltaic power supply system; improve the resource utilization of equipment and solar energy, increased user's investment return.
Description of drawings
Accompanying drawing is a kind of independent photovoltaic electric power system schematic block diagram with self-starting function.
Embodiment
As examples of implementation, by reference to the accompanying drawings a kind of independent photovoltaic electric power system with self-starting function of the present utility model is described, still, technology of the present utility model and scheme are not limited to the content that present embodiment provides.
Accompanying drawing has provided a kind of schematic block diagram with independent photovoltaic electric power system of self-starting function.As shown in the figure, a kind of independent photovoltaic electric power system with self-starting function that the utility model proposes, comprise: photovoltaic electrification component (1), monitoring and protecting circuit (2), photovoltaic controller (3), inverter (4), electric capacity electric storage means (5), threshold switch circuit (6), photovoltaic direct-furnish electric-controlled switch (7a), discharge and recharge dispensable circuit (7b), photovoltaic inversion power supply electric-controlled switch (7c), photovoltaic direct-furnish counterflow-preventing circuit (8a), accumulating system power supply counterflow-preventing circuit (8b), electric power storage Alternating Current Power Supply threshold circuit (8c), system power supply and circuit (9), system's control and control panel module (10), batteries (11), DC load port (12), AC load port (13), emergency load port (14) and emergency electric power bus (15) consist of; It is characterized in that:
Photovoltaic electrification component (1) connects monitoring and protecting circuit (2) and connects emergency load port (14) by photovoltaic direct-furnish electric-controlled switch (7a) and emergency electric power bus (15), consists of photovoltaic electric power emergency service path;
Photovoltaic electrification component (1) connects monitoring and protecting circuit (2) and connects electric capacity electric storage means (5) by photovoltaic direct-furnish electric-controlled switch (7a) and emergency electric power bus (15), consists of the quick electric power storage of photovoltaic electric power path;
Photovoltaic electrification component (1) connects monitoring and protecting circuit (2) and also is connected in series in turn photovoltaic direct-furnish counterflow-preventing circuit (8a), system power supply and circuit (9), system's control and control panel module (10) by photovoltaic direct-furnish electric-controlled switch (7a) and emergency electric power bus (15) connect threshold switching circuit (6), consists of self-starting power path;
Photovoltaic electrification component (1) connects monitoring and protecting circuit (2) and connects electric capacity electric storage means (5) by photovoltaic direct-furnish electric-controlled switch (7a) and emergency electric power bus (15), also be connected in series in turn photovoltaic direct-furnish counterflow-preventing circuit (8a), system power supply and circuit (9), system's control and control panel module (10) by electric capacity electric storage means (5) connect threshold switching circuit (6), consist of electric capacity electric power electric power storage and self-starting power path;
Photovoltaic electrification component (1) in turn tandem connection monitoring protective circuit (2), photovoltaic controller (3), photovoltaic inversion consists of photovoltaic electric power Alternating Current Power Supply electrical path for automatically controlled switch (7c), inverter (4) and AC load port (13);
Photovoltaic electrification component (1) in turn tandem connection monitoring protective circuit (2), photovoltaic controller (3), discharge and recharge dispensable circuit (7b) and batteries (11), consist of photovoltaic electric power storage charge path;
Batteries (11) connects DC load port (12) by discharging and recharging dispensable circuit (7b), consists of electric power storage direct current supply path;
Batteries (11) is connected in series electric power storage Alternating Current Power Supply threshold circuit (8c), photovoltaic inversion for automatically controlled switch (7c), inverter (4) and AC load port (13) in turn by discharging and recharging dispensable circuit (7b), consists of electric power storage Alternating Current Power Supply path;
Batteries (11) is connected in series accumulating system power supply counterflow-preventing circuit (8b), system power supply and circuit (9) and system's control and control panel module (10), construction system power path in turn by discharging and recharging dispensable circuit (7b);
System control and control panel module (10) by system bus (16) connect respectively monitoring and protecting circuit (2), photovoltaic direct-furnish electric-controlled switch (7a), discharge and recharge dispensable circuit (7b), photovoltaic inversion confession automatically controlled switch (7c), construction system regulation and controlling of information link;
The feature of its system control method is: after system exception is shut down, and photovoltaic direct-furnish electric-controlled switch (7a) auto-closing and the automatic disconnection of photovoltaic inversion power supply electric-controlled switch (7c); When photovoltaic electrification component (1) generates electricity; by monitoring and protecting circuit (2) and photovoltaic direct-furnish electric-controlled switch (7a) electric power that photovoltaic electrification component (1) sends is supplied with emergency electric power bus (15); make emergency load port (14) obtain emergence power simultaneously; it also is electric capacity electric storage means (5) quick charge; when charge volume reaches set point; threshold switch circuit (6) conducting and warp (8a) are system power supply and circuit (9) and system's control and control panel module (10) power supply; make system possess the required electric power of startup and finish self-starting; after system's control and control panel module (10) enter system's startup running status; regulate and control to the conducting of photovoltaic electric power electric power storage charge path; be batteries (11) charging; when required charge value is resumed operation in the system that electric power storage reaches default; system is controlled by system's control and control panel module (10) after entering normal operation; turn-off photovoltaic direct-furnish electric-controlled switch (7a) and control photovoltaic inversion power supply electric-controlled switch (7c) closure; make the photovoltaic power supply system transfer system to from the emergency service state and normally move power supply state, the self-starting of completion system.
A kind of independent photovoltaic electric power system with self-starting function of the present utility model, described photovoltaic direct-furnish electric-controlled switch (7a) is the normally closed electric-controlled switch that closes.
A kind of independent photovoltaic electric power system with self-starting function of the present utility model, described photovoltaic inversion power supply electric-controlled switch (7c) is opened electric-controlled switch for normal off.
As can be known described from present embodiment, enforcement by technical solution of the present invention, when system's normal boot-strap moves, controlled by system's control and control panel module (10) after the start, turn-off photovoltaic direct-furnish electric-controlled switch (7a) and control photovoltaic inversion power supply electric-controlled switch (7c) closure, make the photovoltaic power supply system enter normal operation power supply state; When running into the shutdown of photovoltaic power supply system exception; the photovoltaic direct-furnish counterflow-preventing circuit (8a) of technical solution of the present invention by arranging; accumulating system power supply counterflow-preventing circuit (8b), each Power Electronic Circuit of electric power storage Alternating Current Power Supply threshold circuit (8c) realize the automatic electric power regulation and control; make system behind cancel closedown; in the electrical path of turn-offing the conventional load power supply; in the time of closed conducting emergency service path, conducting photovoltaic electric power quick electric power storage path and photovoltaic electric power self-starting power path.Make the photovoltaic power supply system reach the necessary condition of its operation work; be that the electric power that system starts has obtained preferential guarantee; when required charge value is resumed operation in the system that electric power storage reaches default; system finishes self-starting and enters normal operation, by system control and control panel module (10) to monitoring and protecting circuit (2), photovoltaic direct-furnish electric-controlled switch (7a), discharge and recharge dispensable circuit (7b), the photovoltaic inversion communicates for automatically controlled switch (7c) and regulate and control.
Claims (3)
1. independent photovoltaic electric power system with self-starting function, comprise: photovoltaic electrification component (1), monitoring and protecting circuit (2), photovoltaic controller (3), inverter (4), electric capacity electric storage means (5), threshold switch circuit (6), photovoltaic direct-furnish electric-controlled switch (7a), discharge and recharge dispensable circuit (7b), photovoltaic inversion power supply electric-controlled switch (7c), photovoltaic direct-furnish counterflow-preventing circuit (8a), accumulating system power supply counterflow-preventing circuit (8b), electric power storage Alternating Current Power Supply threshold circuit (8c), system power supply and circuit (9), system's control and control panel module (10), batteries (11), DC load port (12), AC load port (13), emergency load port (14) and emergency electric power bus (15) consist of; It is characterized in that:
Photovoltaic electrification component (1) connects monitoring and protecting circuit (2) and connects emergency load port (14) by photovoltaic direct-furnish electric-controlled switch (7a) and emergency electric power bus (15), consists of photovoltaic electric power emergency service path;
Photovoltaic electrification component (1) connects monitoring and protecting circuit (2) and connects electric capacity electric storage means (5) by photovoltaic direct-furnish electric-controlled switch (7a) and emergency electric power bus (15);
Photovoltaic electrification component (1) connects monitoring and protecting circuit (2) and also is connected in series in turn photovoltaic direct-furnish counterflow-preventing circuit (8a), system power supply and circuit (9), system's control and control panel module (10) by photovoltaic direct-furnish electric-controlled switch (7a) and emergency electric power bus (15) connect threshold switching circuit (6);
Photovoltaic electrification component (1) connects monitoring and protecting circuit (2) and connects electric capacity electric storage means (5) by photovoltaic direct-furnish electric-controlled switch (7a) and emergency electric power bus (15), also is connected in series in turn photovoltaic direct-furnish counterflow-preventing circuit (8a), system power supply and circuit (9), system's control and control panel module (10) by electric capacity electric storage means (5) connect threshold switching circuit (6);
Photovoltaic electrification component (1) in turn tandem connection monitoring protective circuit (2), photovoltaic controller (3), photovoltaic inversion supplies automatically controlled switch (7c), inverter (4) and AC load port (13);
Photovoltaic electrification component (1) in turn tandem connection monitoring protective circuit (2), photovoltaic controller (3), discharge and recharge dispensable circuit (7b) and batteries (11);
Batteries (11) connects DC load port (12) by discharging and recharging dispensable circuit (7b);
Batteries (11) is connected in series electric power storage Alternating Current Power Supply threshold circuit (8c), photovoltaic inversion for automatically controlled switch (7c), inverter (4) and AC load port (13) in turn by discharging and recharging dispensable circuit (7b);
Batteries (11) is connected in series accumulating system power supply counterflow-preventing circuit (8b), system power supply and circuit (9) and system's control and control panel module (10) in turn by discharging and recharging dispensable circuit (7b);
System control and control panel module (10) by system bus (16) connect respectively monitoring and protecting circuit (2), photovoltaic direct-furnish electric-controlled switch (7a), discharge and recharge dispensable circuit (7b), photovoltaic inversion confession automatically controlled switch (7c).
2. a kind of independent photovoltaic electric power system with self-starting function according to claim 1, described photovoltaic direct-furnish electric-controlled switch (7a) is the normally closed electric-controlled switch that closes.
3. a kind of independent photovoltaic electric power system with self-starting function according to claim 1, described photovoltaic inversion power supply electric-controlled switch (7c) is opened electric-controlled switch for normal off.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210341221.6A CN103683467B (en) | 2012-09-17 | 2012-09-17 | A kind of independent photovoltaic electric power system with self-starting function |
| CN2012204695896U CN202798128U (en) | 2012-09-17 | 2012-09-17 | Independent photovoltaic power supply system with self-starting function |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210341221.6A CN103683467B (en) | 2012-09-17 | 2012-09-17 | A kind of independent photovoltaic electric power system with self-starting function |
| CN2012204695896U CN202798128U (en) | 2012-09-17 | 2012-09-17 | Independent photovoltaic power supply system with self-starting function |
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| Publication Number | Publication Date |
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| CN202798128U true CN202798128U (en) | 2013-03-13 |
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| CN2012204695896U Expired - Lifetime CN202798128U (en) | 2012-09-17 | 2012-09-17 | Independent photovoltaic power supply system with self-starting function |
| CN201210341221.6A Expired - Fee Related CN103683467B (en) | 2012-09-17 | 2012-09-17 | A kind of independent photovoltaic electric power system with self-starting function |
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| CN201210341221.6A Expired - Fee Related CN103683467B (en) | 2012-09-17 | 2012-09-17 | A kind of independent photovoltaic electric power system with self-starting function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10097108B2 (en) | 2014-12-16 | 2018-10-09 | Abb Schweiz Ag | Energy panel arrangement power dissipation |
| US10348094B2 (en) | 2015-01-28 | 2019-07-09 | Abb Schweiz Ag | Energy panel arrangement shutdown |
| US10404060B2 (en) | 2015-02-22 | 2019-09-03 | Abb Schweiz Ag | Photovoltaic string reverse polarity detection |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928942B (en) * | 2014-04-18 | 2015-10-28 | 芜湖职业技术学院 | A kind of light storage joint distributed power generation off-grid system black-start method |
| CN106300329B (en) * | 2016-08-30 | 2019-02-01 | 中国科学院上海微系统与信息技术研究所 | Photovoltaic autonomous intelligence power supply system and method for supplying power to |
| CN108631410B (en) * | 2018-06-22 | 2024-06-25 | 河南森源电气股份有限公司 | A photovoltaic power generation unit self-starting control device and a power supply system |
| CN111478380B (en) * | 2019-01-24 | 2021-07-30 | 宁德时代新能源科技股份有限公司 | Energy storage system and its self-starting method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4213941B2 (en) * | 2002-10-11 | 2009-01-28 | シャープ株式会社 | Output control method for a plurality of distributed power supplies and distributed power management system |
| ATE425416T1 (en) * | 2005-05-19 | 2009-03-15 | Black & Decker Inc | EMERGENCY RADIO, LIGHT AND POWER SUPPLY |
| CN1812225A (en) * | 2006-03-02 | 2006-08-02 | 郭亚晋 | Solar energy emergency power supplying method and system for high building |
| CN101399451B (en) * | 2007-11-06 | 2010-12-15 | 中国科学院电工研究所 | Energy cut protection device for solar automatically tracking system |
| CN201966627U (en) * | 2011-04-18 | 2011-09-07 | 周锡卫 | Multi-power multi-accumulator intelligent balanced power supply system |
-
2012
- 2012-09-17 CN CN2012204695896U patent/CN202798128U/en not_active Expired - Lifetime
- 2012-09-17 CN CN201210341221.6A patent/CN103683467B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10097108B2 (en) | 2014-12-16 | 2018-10-09 | Abb Schweiz Ag | Energy panel arrangement power dissipation |
| US10348094B2 (en) | 2015-01-28 | 2019-07-09 | Abb Schweiz Ag | Energy panel arrangement shutdown |
| US10404060B2 (en) | 2015-02-22 | 2019-09-03 | Abb Schweiz Ag | Photovoltaic string reverse polarity detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103683467B (en) | 2015-08-12 |
| CN103683467A (en) | 2014-03-26 |
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Effective date of registration: 20160602 Address after: 100000, 326, North block, building 2, building 1, East Road, Fengtai District Automobile Museum, Beijing, China Patentee after: BEIJING TIANSHI NEW ENERGY TECHNOLOGY CO.,LTD. Address before: 100102 Chaoyang District, South Lake Road, No. 8, North building, room 2, room, No. 301 Patentee before: Zhou Xiwei |
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