CN219697564U - Photovoltaic structure for new energy building - Google Patents
Photovoltaic structure for new energy building Download PDFInfo
- Publication number
- CN219697564U CN219697564U CN202320254563.8U CN202320254563U CN219697564U CN 219697564 U CN219697564 U CN 219697564U CN 202320254563 U CN202320254563 U CN 202320254563U CN 219697564 U CN219697564 U CN 219697564U
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- supporting seat
- sprocket
- motor
- fixedly connected
- photovoltaic
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- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 238000009434 installation Methods 0.000 claims description 16
- 210000001503 joint Anatomy 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 description 3
- 125000003003 spiro group Chemical group 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241000127225 Enceliopsis nudicaulis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
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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
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- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a photovoltaic structure for a new energy building, which relates to the technical field of photovoltaic power generation. According to the utility model, through the cooperation arrangement among the structures such as the motor, the first sprocket, the second sprocket, the transmission rotation and the like, when the solar energy collection device is used, a user starts the motor, the motor drives the first sprocket to rotate, and the transmission device drives the second sprocket to synchronously rotate when the first sprocket rotates, so that the photovoltaic panel is driven to slowly rotate, the rotation speed of the motor is controlled, the photovoltaic panel always keeps consistent with the sun movement speed, the problem that the conventional photovoltaic structure can fully absorb the light energy by manually adjusting the sunlight reflected by the reflective panel, and the angle of the reflective panel is required to be adjusted by the user for many times in one day due to the fact that the sunlight moves at all times is avoided as much as possible, and the use of the solar energy collection device is inconvenient for the user is solved.
Description
Technical Field
The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic structure for a new energy building.
Background
Along with the exhaustion of non-renewable energy sources and the increasing deterioration of ecological environment, solar energy has become the key development and utilization direction of renewable energy sources in various countries due to the characteristics of safety, cleanliness, abundant resources, wide distribution and the like.
The utility model patent of bulletin number CN111800074B proposes a new forms of energy building and uses photovoltaic structure, including base, four support frames, frame and a plurality of photovoltaic panel, the frame passes through support frame and base fixed connection, and a plurality of photovoltaic panel are fixed to be set up in the inner chamber of frame, one side symmetry fixedly connected with two fixed plates of frame, two the joint has first reflector panel between the fixed plate, the bottom fixedly connected with first rotation round pin of the both sides of first reflector panel, two first rotation round pin respectively with two fixed plates rotate the interlude and be connected, just it is provided with first rubber packing ring to alternate between first rotation round pin and the fixed plate, the top of first reflector panel is through the concave bayonet joint of seting up has the second reflector panel, the junction rotation of first reflector panel and second reflector panel is interluded and is connected with the second rotation round pin, the outer wall fixed cup joint of second rotation round pin has the second rubber packing ring.
Above-mentioned photovoltaic structure shines on photovoltaic panel through setting up two reflection of light panels after the sunshine is through refracting, when the unable direct injection of sunshine on photovoltaic panel, makes the abundant absorption light energy of photovoltaic panel, however above-mentioned reflection of light panel needs the manual regulation of user, and sunshine is moving constantly, leads to the user to need adjust many times in a day, inconvenient user use.
Disclosure of Invention
The utility model aims to solve or at least relieve the problem that the existing photovoltaic structure can fully absorb light energy by manually adjusting the refraction of the light reflecting panel, but the angle of the light reflecting panel is required to be adjusted for a plurality of times in one day by the movement of the sunlight at any time, so that the use of the photovoltaic structure is inconvenient for users.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a new forms of energy photovoltaic structure for building, includes two parallel arrangement's fixed plate, two equal fixedly connected with supporting seat of fixed plate interlude, supporting seat top fixedly connected with support, two be equipped with the installing frame between the support, the joint has photovoltaic panel in the installing frame inner chamber, fixedly connected with connecting axle on the installing frame both sides lateral wall, two the one end that the installing frame was kept away from to the connecting axle runs through two respectively the support top and with the support rotates to be connected, the connecting axle is located fixedly connected with second sprocket on one section in the support inner chamber, two be equipped with the pivot between the supporting seat, two are run through respectively at the both ends of pivot the supporting seat and with the supporting seat rotates to be connected, the pivot both ends are located one section in the supporting seat inner chamber is gone up fixedly connected with first sprocket, is located one side first sprocket with through transmission connection between the second sprocket, one of them fixedly connected with motor on the supporting seat lateral wall, the output of motor with pivot tip fixed connection.
Through adopting above technical scheme, during the use, the user is at first installed the top of outside building with the support through the fixed plate, then install the installing frame on the top of support, and fix the photovoltaic panel joint in the installing frame inner chamber, then the user starts the motor, the motor can drive first sprocket rotation through the pivot, can drive the synchronous rotation of second sprocket through transmission when first sprocket rotates, thereby drive the slow rotation of photovoltaic panel between two supports, through the rotational speed of control motor, make photovoltaic panel remain unanimous with sun removal rate throughout, thereby make photovoltaic panel just right sun ray all the time, the generating efficiency of photovoltaic panel has been improved, the solar panel's of present photovoltaic structure refraction sunshine through manual regulation has been avoided as far as possible, nevertheless because in sunshine time at the removal, lead to the user to need adjust the angle of reflective panel many times in the day, inconvenient user's problem of use.
Optionally, through holes are formed at two ends of the fixing plate, bolts penetrate through the inner cavities of the through holes, and are in threaded connection with an external building after penetrating through the fixing plate.
Through adopting above technical scheme, set up the bolt at the both ends of fixed plate, make the fixed plate can pass through the bolt fastening on external building, adopt the connected mode of bolt spiro union to connect, not only install firmly, be convenient for the user install and dismantle moreover.
Optionally, the support is rectangular tubular structure, the support bottom with the supporting seat inner chamber is linked together, transmission is located the support with in the supporting seat inner chamber, transmission's surface with the support with leave the clearance between the inner wall of supporting seat.
Through adopting above technical scheme, be linked together support bottom and supporting seat inner chamber, conveniently install transmission in supporting seat and supporting seat inner chamber, leave the clearance between transmission's surface and the inner wall of support and supporting seat, can avoid transmission to the greatest extent and produce the friction between transmission and support and supporting seat inner wall in the transmission process, influence transmission and carry out driven problem.
Optionally, the installing frame is rectangle frame column structure, fixedly connected with flange on the inner chamber diapire of installing frame, photovoltaic panel's bottom overlap joint in on the flange, be equipped with the latch on the lateral wall of installing frame both sides, the latch run through the installing frame and with the installing frame looks spiro union, the latch be located one end in the installing frame inner chamber with photovoltaic panel lateral wall looks butt.
Through adopting above technical scheme, set up the flange and be used for supporting photovoltaic panel's bottom, set up the bayonet catch and be used for extrudeing fixedly to photovoltaic panel's week side, improve photovoltaic panel and the stability of installing frame connection.
Optionally, the motor is a servo motor with adjustable rotation speed, and the time for one rotation of the motor is twenty-four hours.
Through adopting above technical scheme, the motor is servo motor, and the user of convenience adjusts the rotational speed of motor, and the time that the motor rotated the round is a day, can make the rotational speed of motor the same as the sun circling earth pivoted speed as far as possible to make photovoltaic panel can drive through the motor and rotate just to the sun all the time, improve photovoltaic panel's generating efficiency.
Optionally, a bearing is sleeved at the connection part of the rotating shaft and the supporting seat, an inner ring of the bearing is fixedly connected with the rotating shaft, and an outer ring of the bearing is embedded on the side wall of the supporting seat and is fixedly connected with the side wall of the supporting seat.
Through adopting above technical scheme, set up the bearing and be used for reducing the frictional force of pivot and supporting seat junction, the resistance effect when the motor drives the pivot rotation is reduced as far as possible.
Optionally, the transmission is two chains, and the chain both ends cover are located respectively on the second sprocket that is located same one side with on the first sprocket, the chain with same one side first sprocket and second sprocket transmission connection.
Through adopting above technical scheme, set up the chain and be used for driving the synchronous rotation of first sprocket and the second sprocket of same one side to drive the photovoltaic panel who installs on the installing frame and rotate along with sun rotation.
In summary, the beneficial effects of the utility model are as follows:
according to the utility model, through the cooperation arrangement among the structures such as the motor, the first sprocket, the second sprocket, the transmission rotation and the like, when the solar energy collection device is used, a user starts the motor, the motor drives the first sprocket to rotate, and the transmission device drives the second sprocket to synchronously rotate when the first sprocket rotates, so that the photovoltaic panel is driven to slowly rotate, the rotation speed of the motor is controlled, the photovoltaic panel always keeps consistent with the sun movement speed, the problem that the conventional photovoltaic structure can fully absorb the light energy by manually adjusting the sunlight reflected by the reflective panel, and the angle of the reflective panel is required to be adjusted by the user for many times in one day due to the fact that the sunlight moves at all times is avoided as much as possible, and the use of the solar energy collection device is inconvenient for the user is solved.
Drawings
FIG. 1 is a schematic perspective view of the whole structure of the present utility model;
FIG. 2 is a schematic view of the connection structure of the first sprocket, the second sprocket and the chain of the present utility model;
fig. 3 is a schematic view of the connection structure of the mounting frame of the present utility model.
Reference numerals illustrate: 1. a fixing plate; 2. a bolt; 3. a support base; 4. a bracket; 5. a mounting frame; 6. a flange; 7. a latch; 8. a connecting shaft; 9. a photovoltaic panel; 10. a rotating shaft; 11. a first sprocket; 12. a motor; 13. a bearing; 14. a second sprocket; 15. and (3) a chain.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-3.
Referring to fig. 1-3, a photovoltaic structure for a new energy building comprises two fixing plates 1 arranged in parallel, the fixing plates 1 are arranged to facilitate a user to fix the whole photovoltaic structure on an external building, the middle sections of the two fixing plates 1 are fixedly connected with a supporting seat 3, and the top of the supporting seat 3 is fixedly connected with a support 4 for supporting.
Be equipped with installing frame 5 between two supports 4, the joint has photovoltaic panel 9 in the installing frame 5 inner chamber, through the connected mode of joint, not only connect the fastening, convenience of customers installs and dismantles photovoltaic panel 9 moreover.
The connecting shafts 8 are fixedly connected to the side walls on two sides of the mounting frame 5, and one ends, far away from the mounting frame 5, of the two connecting shafts 8 penetrate through the top ends of the two brackets 4 respectively and are connected with the brackets 4 in a rotating mode. The photovoltaic panel 9 in the inner cavity of the mounting frame 5 can rotate around the connecting shaft 8, so that the photovoltaic panel 9 can face to sunlight, solar rays can be fully received, and the power generation efficiency of the photovoltaic panel 9 is improved.
The connecting shaft 8 is fixedly connected with a second sprocket 14 used for driving the photovoltaic panel 9 to rotate on one section in the inner cavity of the support 4, a rotating shaft 10 is arranged between the two supporting seats 3, two ends of the rotating shaft 10 respectively penetrate through the two supporting seats 3 and are rotationally connected with the supporting seats 3, a first sprocket 11 is fixedly connected on one section of the two ends of the rotating shaft 10 in the inner cavity of the supporting seats 3, and the first sprocket 11 and the second sprocket 14 on the same side are in transmission connection through a transmission device.
A motor 12 is fixedly connected to the outer side wall of one supporting seat 3, and the output end of the motor 12 is fixedly connected with the end part of the rotating shaft 10. When a user starts the motor 12, the motor 12 can drive the first sprocket 11 to rotate through the rotating shaft 10, and the first sprocket 11 can drive the second sprocket 14 to synchronously rotate through the transmission device when rotating, so that the photovoltaic panel 9 is driven to slowly rotate between the two brackets 4, the photovoltaic panel 9 always keeps consistent with the sun moving speed through controlling the rotating speed of the motor 12, so that the photovoltaic panel 9 always faces the sun rays, and the power generation efficiency of the photovoltaic panel 9 is improved.
When the photovoltaic panel 9 is used, a user firstly installs the support 4 to the top of an external building through the fixing plate 1, then installs the installation frame 5 on the top of the support 4, and fixes the photovoltaic panel 9 in the inner cavity of the installation frame 5 in a clamping manner, then the user starts the motor 12, the motor 12 can drive the first chain wheel 11 to rotate through the rotating shaft 10, the first chain wheel 11 can drive the second chain wheel 14 to synchronously rotate through the transmission device when rotating, thereby driving the photovoltaic panel 9 to slowly rotate between the two supports 4, the photovoltaic panel 9 always keeps consistent with the sun moving speed through controlling the rotating speed of the motor 12, so that the photovoltaic panel 9 always faces the sun, the power generation efficiency of the photovoltaic panel 9 is improved, the problem that the existing photovoltaic structure refracts sunlight through manually adjusting the reflective panel, the sufficient light energy absorption of the photovoltaic panel 9 is avoided as much as possible, however, the user needs to adjust the angle of the reflective panel in a day many times due to the movement of the sunlight time, and the use is inconvenient for the user.
Referring to fig. 1, through holes are formed at both ends of a fixing plate 1, bolts 2 are inserted into inner cavities of the through holes, and the bolts 2 penetrate through the fixing plate 1 and are in threaded connection with an external building. Set up bolt 2 at the both ends of fixed plate 1, make fixed plate 1 can be fixed on the outside building through bolt 2, adopt the connected mode of bolt 2 spiro union to connect, not only install firmly, be convenient for the user install and dismantle moreover.
Referring to fig. 1, a bracket 4 is in a rectangular tubular structure, the bottom end of the bracket 4 is communicated with the inner cavity of a supporting seat 3, a transmission device is positioned in the inner cavities of the bracket 4 and the supporting seat 3, and a gap is reserved between the outer surface of the transmission device and the inner walls of the bracket 4 and the supporting seat 3. The bottom of the support 4 is communicated with the inner cavity of the support seat 3, the transmission device is conveniently installed in the support seat 3 and the inner cavity of the support 4, a gap is reserved between the outer surface of the transmission device and the inner walls of the support 4 and the support seat 3, and the problem that the transmission device is affected to drive due to friction generated between the transmission device and the inner walls of the support 4 and the support seat 3 in the transmission process can be avoided as much as possible.
Referring to fig. 3, the installation frame 5 is of a rectangular frame structure, a flange 6 is fixedly connected to the bottom wall of the inner cavity of the installation frame 5, the bottom of the photovoltaic panel 9 is lapped on the flange 6, the side walls on two sides of the installation frame 5 are provided with clamping bolts 7, the clamping bolts 7 penetrate through the installation frame 5 and are in threaded connection with the installation frame 5, and one end of the clamping bolts 7 located in the inner cavity of the installation frame 5 is abutted against the side wall of the photovoltaic panel 9. The flange 6 is arranged to support the bottom of the photovoltaic panel 9, the clip 7 is arranged to press and fix the peripheral side of the photovoltaic panel 9, and the stability of connection between the photovoltaic panel 9 and the mounting frame 5 is improved.
Referring to fig. 3, the motor 12 is a servo motor with adjustable rotation speed, and the time for one rotation of the motor 12 is twenty-four hours. The motor 12 is a servo motor, so that a user can conveniently adjust the rotation speed of the motor 12, the rotation time of the motor 12 is one day, the rotation speed of the motor 12 is the same as the rotation speed of the sun around the earth as much as possible, the photovoltaic panel 9 can be driven to rotate by the motor 12 to always face the sun, and the power generation efficiency of the photovoltaic panel 9 is improved.
Referring to fig. 2, a bearing 13 is sleeved at the joint of the rotating shaft 10 and the supporting seat 3, an inner ring of the bearing 13 is fixedly connected with the rotating shaft 10, and an outer ring of the bearing 13 is embedded on the side wall of the supporting seat 3 and is fixedly connected with the side wall of the supporting seat 3. The bearing 13 is arranged to reduce the friction force at the joint of the rotating shaft 10 and the supporting seat 3, and reduce the resistance effect of the motor 12 when the rotating shaft 10 is driven to rotate as much as possible.
Referring to fig. 3, the transmission device is two chains 15, two ends of the two chains 15 are respectively sleeved on the second sprocket wheel 14 and the first sprocket wheel 11 which are positioned on the same side, and the chains 15 are in transmission connection with the first sprocket wheel 11 and the second sprocket wheel 14 on the same side. The chain 15 is provided for driving the first sprocket 11 and the second sprocket 14 on the same side to rotate synchronously, thereby driving the photovoltaic panel 9 mounted on the mounting frame 5 to rotate with the rotation of the sun.
The implementation principle of the utility model is as follows: when the photovoltaic panel 9 is used, a user firstly installs the support 4 to the top of an external building through the fixing plate 1, then installs the installation frame 5 on the top of the support 4, and fixes the photovoltaic panel 9 in the inner cavity of the installation frame 5 in a clamping manner, then the user starts the motor 12, the motor 12 can drive the first chain wheel 11 to rotate through the rotating shaft 10, the first chain wheel 11 can drive the second chain wheel 14 to synchronously rotate through the transmission device when rotating, thereby driving the photovoltaic panel 9 to slowly rotate between the two supports 4, the photovoltaic panel 9 always keeps consistent with the sun moving speed through controlling the rotating speed of the motor 12, so that the photovoltaic panel 9 always faces the sun, the power generation efficiency of the photovoltaic panel 9 is improved, the problem that the existing photovoltaic structure refracts sunlight through manually adjusting the reflective panel, the sufficient light energy absorption of the photovoltaic panel 9 is avoided as much as possible, however, the user needs to adjust the angle of the reflective panel in a day many times due to the movement of the sunlight time, and the use is inconvenient for the user.
The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. The utility model provides a new forms of energy photovoltaic structure for building, includes two parallel arrangement's fixed plate (1), its characterized in that: two fixed plates (1) intermediate section all fixedly connected with supporting seat (3), supporting seat (3) top fixedly connected with support (4), two be equipped with between support (4) installing frame (5), joint has photovoltaic panel (9) in installing frame (5) inner chamber, fixedly connected with connecting axle (8) on installing frame (5) both sides lateral wall, two connecting axle (8) keep away from one end of installing frame (5) run through two respectively supporting seat (4) top and with support (4) rotation connection, connecting axle (8) are located on one section of supporting seat (4) inner chamber fixedly connected with second sprocket (14), two be equipped with pivot (10) between supporting seat (3), the both ends of pivot (10) run through two respectively supporting seat (3) and with supporting seat (3) rotation connection, pivot (10) both ends are located one section of supporting seat (3) inner chamber is last fixedly connected with first sprocket (11) respectively, connecting axle (8) are located between one of them side (12) and the outside through one of them fixed sprocket (12), the output end of the motor (12) is fixedly connected with the end part of the rotating shaft (10).
2. The photovoltaic structure for a new energy building according to claim 1, wherein: through holes are formed in two ends of the fixing plate (1), bolts (2) penetrate through the inner cavities of the through holes, and the bolts (2) penetrate through the fixing plate (1) and are in threaded connection with an external building.
3. The photovoltaic structure for a new energy building according to claim 1, wherein: the support (4) is of a rectangular tubular structure, the bottom end of the support (4) is communicated with the inner cavity of the supporting seat (3), the transmission device is located in the inner cavity of the support (4) and the inner cavity of the supporting seat (3), and a gap is reserved between the outer surface of the transmission device and the inner walls of the support (4) and the supporting seat (3).
4. The photovoltaic structure for a new energy building according to claim 1, wherein: the solar photovoltaic panel is characterized in that the installation frame (5) is of a rectangular frame-shaped structure, a flange (6) is fixedly connected to the bottom wall of the inner cavity of the installation frame (5), the bottom of the photovoltaic panel (9) is lapped on the flange (6), clamping bolts (7) are arranged on the side walls of the two sides of the installation frame (5), the clamping bolts (7) penetrate through the installation frame (5) and are in threaded connection with the installation frame (5), and the clamping bolts (7) are located at one end in the inner cavity of the installation frame (5) and are in butt joint with the side walls of the photovoltaic panel (9).
5. The photovoltaic structure for a new energy building according to claim 1, wherein: the motor (12) is a servo motor with adjustable rotating speed, and the time for one rotation of the motor (12) is twenty-four hours.
6. The photovoltaic structure for a new energy building according to claim 5, wherein: the bearing (13) is sleeved at the joint of the rotating shaft (10) and the supporting seat (3), the inner ring of the bearing (13) is fixedly connected with the rotating shaft (10), and the outer ring of the bearing (13) is embedded on the side wall of the supporting seat (3) and is fixedly connected with the side wall of the supporting seat (3).
7. The photovoltaic structure for a new energy building according to claim 1, wherein: the transmission device is characterized in that the transmission device comprises two chains (15), two ends of each chain (15) are respectively sleeved on the second chain wheel (14) and the first chain wheel (11) which are positioned on the same side, and the chains (15) are in transmission connection with the first chain wheel (11) and the second chain wheel (14) on the same side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320254563.8U CN219697564U (en) | 2023-02-18 | 2023-02-18 | Photovoltaic structure for new energy building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320254563.8U CN219697564U (en) | 2023-02-18 | 2023-02-18 | Photovoltaic structure for new energy building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219697564U true CN219697564U (en) | 2023-09-15 |
Family
ID=87937908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320254563.8U Active CN219697564U (en) | 2023-02-18 | 2023-02-18 | Photovoltaic structure for new energy building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219697564U (en) |
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2023
- 2023-02-18 CN CN202320254563.8U patent/CN219697564U/en active Active
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240612 Address after: Room 03, Shared Office Area, 2nd Floor, Building 22, No. 1889 Huandao East Road, Hengqin New District, Zhuhai City, Guangdong Province, 519000 Patentee after: Yaoling (Guangdong) New Energy Technology Co.,Ltd. Country or region after: China Address before: 201400 Room 139, Building 3, No. 1, Lane 1558, Wusi Road, Haiwan Town, Fengxian District, Shanghai Patentee before: Shanghai Roufu Energy Technology Co.,Ltd. Country or region before: China |