CN105591594A - Static hot spot removal photovoltaic panel - Google Patents
Static hot spot removal photovoltaic panel Download PDFInfo
- Publication number
- CN105591594A CN105591594A CN201510665401.3A CN201510665401A CN105591594A CN 105591594 A CN105591594 A CN 105591594A CN 201510665401 A CN201510665401 A CN 201510665401A CN 105591594 A CN105591594 A CN 105591594A
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- CN
- China
- Prior art keywords
- static
- power generation
- hot spot
- bars
- photovoltaic panel
- 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.)
- Granted
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 59
- 239000000428 dust Substances 0.000 claims abstract description 50
- 230000006698 induction Effects 0.000 claims abstract description 28
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000012780 transparent material Substances 0.000 claims abstract description 4
- 238000010248 power generation Methods 0.000 claims description 42
- 230000000694 effects Effects 0.000 abstract description 18
- 230000005684 electric field Effects 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/10—Cleaning arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The present invention relates to a static hot spot removal photovoltaic panel. The static hot spot removal photovoltaic panel comprises a support and a generation panel. Two orthogonal static bars are pasted on the sensitive surface of the generation panel, the overlapping position of the two static bars keeps insulation, and the two static bars are respectively electrically connected with the negative charge end and the positive charge end of a electrostatic generator; a fixed rotating shaft is fixed at the center of the generation panel, transparent materials taken as a dust shield are arranged at the rotating sleeve of the fixed rotating shaft, and the dust shield is in parallel with the generation panel; two orthogonal induction bars are fixed at one surface, facing the generation panel, of the dust shield, and the space between the two induction bars keeps insulation; and the induction bars are able to touch the static bars in the process of rotation of the dust shield with respect to the generation panel. The static hot spot removal photovoltaic panel is delicate in structure and low in cost, and is able to fundamentally eliminate the hot spot effect and prolong the service life of the photovoltaic panel.
Description
Technical field
The present invention relates to a kind of optical energy power material, special, be a kind of photovoltaic panel.
Background technology
Along with the deterioration of environment and going deep into of mankind's environmental consciousness, photovoltaic generation, as one of main green energy resource, is more and more applied; Photovoltaic is as solar electrical energy generation, and the situation of weather is the biggest factor of restriction generating, secondly manpower can control except avoiding loss that electrical equipment malfunction brings, it is particularly important that the cleanliness factor of photovoltaic panel also seems; The impact of the dirty alignment in photovoltaic module surface generating efficiency is quite remarkable, one, and the dirt on surface affects the transmissivity of light, and then has influence on the amount of radiation that assembly surface is accepted; Its two, dirt sticks to cell panel surface can form shade, produces hot spot effect, and then photovoltaic panel is caused to damage in the part of photovoltaic module, also can shorten the life-span of photovoltaic panel when affecting generating efficiency; Traditional method is the dust in periodic cleaning photovoltaic panel, this method complicated operation, cost costliness, and the effect after simultaneously clean is not very obvious, has not only wasted more resource but also has easily caused the damage of photovoltaic panel.
Summary of the invention
For the problems referred to above, the invention provides a kind of static except hot spot photovoltaic panel, this photovoltaic panel delicate structure, with low cost, can fundamentally eliminate hot spot effect, extend the service life of photovoltaic panel.
For addressing the above problem, the technical solution adopted in the present invention is: this static removes hot spot photovoltaic panel and includes support and power generation plate; Described support is fixedly mounted on the lower shoe of described power generation plate; The sensitive surface of described power generation plate upward; On the sensitive surface of described power generation plate, be pasted with two orthogonal static bars, the overlapping of two described static bars keeps insulation, and two described static bars are electrically connected with negative electrical charge end and the positive charge end of electrostatic generator respectively; Described electrostatic generator provides electric energy by power generation plate; Central authorities at described power generation plate are also provided with fixed rotating shaft, on described fixed rotating shaft, turning set is provided with the dust excluding plate of being made by transparent material, described dust excluding plate and power generation plate keeping parallelism, on a face of power generation plate, be fixed with two orthogonal induction bars at described dust excluding plate, between two described induction bars, keep insulation; In the process of rotating with respect to power generation plate at dust excluding plate, described induction bar can contact with static bar.
The invention has the beneficial effects as follows: except hot spot photovoltaic panel is arranged on the open position bright and clear, wind-force is powerful, regulate the angle of power generation plate to make sensitive surface just to sunshine this static; Sunshine sees through dust excluding plate and is radiated on described sensitive surface, and power generation plate becomes transform light energy power storage get up and micro-electric energy is supplied with to electrostatic generator for generation of static; Because power generation plate is protected, is not directly exposed in air by dust excluding plate, therefore the surface of power generation plate can keep clean for a long time, is more difficult for being corroded, and therefore has longer service life; Airborne dust, impurity are fallen on dust excluding plate.
Because dust excluding plate turning set is located on described fixed rotating shaft, in the time having wind-force disturbance, will there is moderate fluctuation and rotate; Meanwhile, positive charge and negative electrical charge that electrostatic generator produces are delivered to respectively on static bar, on each described static bar, are covered with respectively positive charge and negative electrical charge; In the time responding to bar near static bar, under the effect of electrostatic force, induction bar will produce different in nature charge inducing and be attracted by static bar, now responds to bar and will rotate towards static bar, and then drive dust excluding plate rotation; In the time of induction bar contact static bar, static bar is to induction bar momentary charge, and now static bar and induction bar are with like electricity lotus, and both accelerate to separate under the effect of electric field repulsion, now respond to bar and are once accelerated; When dust excluding plate rotates nearly 90 while spending, induction bar has run into another static bar with the charges of different polarity, accelerates closely under the effect of electric field suction, now responds to bar and is again accelerated; When induction is after bar contact with different in nature static bar, the former electrostatic charge of responding on bar is neutralized and is full of rapidly the charges of different polarity, now respond to bar again with the static bar two like magnetic poles repel each other contacting, be again accelerated and push away; Therefore, induction bar will drive dust excluding plate quick rotation under the effect of electrostatic force.
It is mainly because dust forms shade on plate face that traditional photovoltaic panel produces hot spot effect, thereby causes photoelectric cell local in photovoltaic panel different from the voltage of other positions, and voltage difference will cause this place's heating for a long time, and then burn out whole photovoltaic panel; And in the present invention, dust drops on dust excluding plate and to power generation plate and causes partial occlusion, but because dust excluding plate is all the time in quick rotation state, therefore on power generation plate, there will not be long local shade, therefore in a time quantum, on power generation plate, the power of each generator unit is identical, crosses for a long time and burns out circuit even if exist the voltage difference of short time to be also unlikely to fever time, therefore the present invention can solve hot spot effect more thoroughly, thereby has greatly extended the service life of photovoltaic panel.
To sum up, the present invention adopts brand-new theory fundamentally to solve hot spot effect, and overall structure is simple, with low cost, can save huge maintenance cost for enterprise, has higher promotional value.
As preferably, on the side of described dust excluding plate, offer wind-guiding line; Facilitating the use wind-force promotes dust excluding plate to rotate.
As preferably, be distributed with discharge tip at the side of each described static bar; So that promote the formation of charge inducing on induction bar, and then the response time of reducing dust excluding plate initial rotation.
Brief description of the drawings
Fig. 1 is the perspective view of this static except an embodiment of hot spot photovoltaic panel.
Fig. 2 is the structural representation of facing of middle power generation plate embodiment illustrated in fig. 1.
Detailed description of the invention
Embodiment
In the embodiment shown in Fig. 1, Fig. 2, this static removes hot spot photovoltaic panel and includes support 1 and power generation plate 2; Described support 1 is fixedly mounted on the lower shoe of described power generation plate 2; The sensitive surface of described power generation plate 2 upward; The overlapping that is pasted with two orthogonal 3, two described static bars 3 of static bar on the sensitive surface of described power generation plate 2 keeps insulation, is distributed with discharge tip 31 at the side of each described static bar 3; Two described static bars 3 are electrically connected with negative electrical charge end and the positive charge end of electrostatic generator 4 respectively; Described electrostatic generator 4 provides electric energy by power generation plate 2; Central authorities at described power generation plate 2 are also provided with fixed rotating shaft, on described fixed rotating shaft, turning set is provided with the dust excluding plate 5 of being made by transparent material, described dust excluding plate 5 and power generation plate 2 keeping parallelisms, on a face of power generation plate 2, be fixed with maintenance insulation between two orthogonal 6, two described induction bars 6 of induction bar at described dust excluding plate 5; On the side of described dust excluding plate 5, offer wind-guiding line; In the process of rotating with respect to power generation plate 2 at dust excluding plate 5, described induction bar 6 can contact with static bar 3.
Except hot spot photovoltaic panel is arranged on the open position bright and clear, wind-force is powerful, regulate the angle of power generation plate 2 to make sensitive surface just to sunshine this static; Sunshine sees through dust excluding plate 5 and is radiated on described sensitive surface, and power generation plate 2 becomes transform light energy power storage get up and micro-electric energy is supplied with to electrostatic generator 4 for generation of static; Because power generation plate 2 is protected, is not directly exposed in air by dust excluding plate 5, therefore the surface of power generation plate 2 can keep clean for a long time, is more difficult for being corroded, and therefore has longer service life; Airborne dust, impurity are fallen on dust excluding plate 5.
Because dust excluding plate 5 turning sets are located on described fixed rotating shaft, in the time having wind-force disturbance, will there is moderate fluctuation and rotate; The wind-guiding line that is opened in dust excluding plate 5 sides can increase the active force of wind-force to dust excluding plate 5, thereby promotes the rotation of dust excluding plate 5; Meanwhile, the positive charge that electrostatic generator 4 produces and negative electrical charge are delivered to respectively on static bar 3, on each described static bar 3, are covered with respectively positive charge and negative electrical charge; In the time responding to bar 6 near static bar 3, under the effect of electrostatic force, induction bar 6, by producing different in nature charge inducing and being attracted by static bar 3, is now responded to bar 6 and will be rotated towards static bar 3, and then drives dust excluding plate 5 to rotate; In the time that induction bar 6 contacts static bar 3, static bar 3 is to induction bar 6 momentary charges, and now static bar 3 and induction bar 6 are with same sex electric charge, and both accelerate to separate under the effect of electric field repulsion, now respond to bar 6 and are once accelerated; When dust excluding plate 5 rotates nearly 90 while spending, induction bar 6 has run into another static bar 3 with the charges of different polarity, accelerates closely under the effect of electric field suction, now responds to bar 6 and is again accelerated; When induction is after bar 6 contact with different in nature static bar 3, the former electrostatic charge of responding on bar 6 is neutralized and is full of rapidly the charges of different polarity, now respond to bar 6 again with static bar 3 two like magnetic poles repel each others that contact, be again accelerated and push away; Therefore, induction bar 6 will drive dust excluding plate 5 quick rotation under the effect of electrostatic force.
In the present embodiment, the discharge tip 31 of static bar 3 sides can be to atmospherical discharges after the certain electric charge of accumulation, and sense of acceleration is answered the charging rate of bar 6, thereby promotes the rotation of induction bar 6, and then the response time of reducing dust excluding plate 5 initial rotation.
It is mainly because dust forms shade on plate face that traditional photovoltaic panel produces hot spot effect, thereby causes photoelectric cell local in photovoltaic panel different from the voltage of other positions, and voltage difference will cause this place's heating for a long time, and then burn out whole photovoltaic panel; And in the present invention, dust drops on dust excluding plate 5 and to power generation plate 2 and causes partial occlusion, but because dust excluding plate 5 is all the time in quick rotation state, therefore on power generation plate 2, there will not be long local shade, therefore in a time quantum, on power generation plate 2, the power of each generator unit is identical, crosses for a long time and burns out circuit even if exist the voltage difference of short time to be also unlikely to fever time, therefore the present invention can solve hot spot effect more thoroughly, thereby has greatly extended the service life of photovoltaic panel.
To sum up, the present invention adopts brand-new theory fundamentally to solve hot spot effect, and overall structure is simple, with low cost, can save huge maintenance cost for enterprise, has higher promotional value.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. static is except a hot spot photovoltaic panel, and this static removes hot spot photovoltaic panel and includes support (1) and power generation plate (2); Described support (1) is fixedly mounted on the lower shoe of described power generation plate (2); The sensitive surface of described power generation plate (2) upward; It is characterized in that: on the sensitive surface of described power generation plate (2), be pasted with two orthogonal static bars (3), the overlapping of two described static bars (3) keeps insulation, and two described static bars (3) are electrically connected with negative electrical charge end and the positive charge end of electrostatic generator (4) respectively; Described electrostatic generator (4) provides electric energy by power generation plate (2); Central authorities at described power generation plate (2) are also provided with fixed rotating shaft, on described fixed rotating shaft, turning set is provided with the dust excluding plate (5) of being made by transparent material, described dust excluding plate (5) and power generation plate (2) keeping parallelism, on a face of power generation plate (2), be fixed with two orthogonal induction bars (6) at described dust excluding plate (5), between two described induction bars (6), keep insulation; In the process of rotating with respect to power generation plate (2) at dust excluding plate (5), described induction bar (6) can contact with static bar (3).
2. static according to claim 1, except hot spot photovoltaic panel, is characterized in that: on the side of described dust excluding plate (5), offer wind-guiding line.
3. static according to claim 1 and 2, except hot spot photovoltaic panel, is characterized in that: be distributed with discharge tip (31) at the side of each described static bar (3).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510665401.3A CN105591594B (en) | 2015-10-16 | 2015-10-16 | Electrostatic removes hot spot photovoltaic panel |
| CN201710632107.1A CN107395102B (en) | 2015-10-16 | 2015-10-16 | Electrostatic removes the working method of hot spot photovoltaic panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510665401.3A CN105591594B (en) | 2015-10-16 | 2015-10-16 | Electrostatic removes hot spot photovoltaic panel |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710632107.1A Division CN107395102B (en) | 2015-10-16 | 2015-10-16 | Electrostatic removes the working method of hot spot photovoltaic panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105591594A true CN105591594A (en) | 2016-05-18 |
| CN105591594B CN105591594B (en) | 2017-10-24 |
Family
ID=55930903
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510665401.3A Active CN105591594B (en) | 2015-10-16 | 2015-10-16 | Electrostatic removes hot spot photovoltaic panel |
| CN201710632107.1A Active CN107395102B (en) | 2015-10-16 | 2015-10-16 | Electrostatic removes the working method of hot spot photovoltaic panel |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710632107.1A Active CN107395102B (en) | 2015-10-16 | 2015-10-16 | Electrostatic removes the working method of hot spot photovoltaic panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105591594B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201054199Y (en) * | 2007-06-11 | 2008-04-30 | 余龙权 | Static induction demonstration motor |
| CN201054200Y (en) * | 2007-06-11 | 2008-04-30 | 熊沪 | Static induction demonstration fan |
| CN202182441U (en) * | 2011-07-18 | 2012-04-04 | 英飞特光电（杭州）有限公司 | Dustproof light transmission device |
| CN204290857U (en) * | 2014-11-07 | 2015-04-22 | 安徽省天利能源有限公司 | A kind of solar cell panel assembly justifying box structure |
| CN204470163U (en) * | 2015-03-11 | 2015-07-15 | 广东梅雁吉祥水电股份有限公司 | A kind of solar panel automatic flushing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201028361Y (en) * | 2006-11-18 | 2008-02-27 | 周民一 | High-efficiency non-contravariant solar photovoltaic power supply road lamp system |
-
2015
- 2015-10-16 CN CN201510665401.3A patent/CN105591594B/en active Active
- 2015-10-16 CN CN201710632107.1A patent/CN107395102B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201054199Y (en) * | 2007-06-11 | 2008-04-30 | 余龙权 | Static induction demonstration motor |
| CN201054200Y (en) * | 2007-06-11 | 2008-04-30 | 熊沪 | Static induction demonstration fan |
| CN202182441U (en) * | 2011-07-18 | 2012-04-04 | 英飞特光电（杭州）有限公司 | Dustproof light transmission device |
| CN204290857U (en) * | 2014-11-07 | 2015-04-22 | 安徽省天利能源有限公司 | A kind of solar cell panel assembly justifying box structure |
| CN204470163U (en) * | 2015-03-11 | 2015-07-15 | 广东梅雁吉祥水电股份有限公司 | A kind of solar panel automatic flushing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107395102B (en) | 2019-04-12 |
| CN105591594B (en) | 2017-10-24 |
| CN107395102A (en) | 2017-11-24 |
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Inventor after: Wang Meiyan Inventor before: Ma Genchang |
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Effective date of registration: 20170814 Address after: Lucheng District of Wenzhou City, Zhejiang province 325000 lotus Jinyuan Building A Room 202 Applicant after: Wang Meiyan Address before: 210000 Jiangsu city of Suzhou province Xiangcheng District Guangji road building 89 Room 201 garden homes Applicant before: Ma Genchang |
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Address after: Lucheng District of Wenzhou City, Zhejiang province 325000 lotus Jinyuan Building A Room 202 Applicant after: Wang Meiyan Address before: Lucheng District of Wenzhou City, Zhejiang province 325000 lotus Jinyuan Building A Room 202 Applicant before: Wang Meiyan |
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Effective date of registration: 20180517 Address after: 210012, 3 level 360, boning science and Technology Park, 2 Yuhua Road, Yuhuatai District, Nanjing, Jiangsu. Patentee after: NANJING HAIDE ELECTRIC POWER TECHNOLOGY CO.,LTD. Address before: 325000 Room 202, A building, Lianhua Jinyuan, Lucheng District, Wenzhou, Zhejiang. Patentee before: Wang Meiyan |
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Address after: Room 302, Nanjing International Service Outsourcing building, 301 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee after: NANJING HAIDE ELECTRIC POWER TECHNOLOGY Co.,Ltd. Address before: Bunning Technology Park No. 2 Yuhua Road in Yuhuatai District of Nanjing City, Jiangsu province 210012 3 floor No. 360 Patentee before: NANJING HAIDE ELECTRIC POWER TECHNOLOGY Co.,Ltd. |
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Address after: Room 302, Nanjing International Service Outsourcing building, 301 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee after: Nanjing Haide Industrial Intelligence Technology Co.,Ltd. Address before: Room 302, Nanjing International Service Outsourcing building, 301 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee before: NANJING HAIDE ELECTRIC POWER TECHNOLOGY CO.,LTD. |