CN215342627U - Photovoltaic backboard and photovoltaic module - Google Patents
Photovoltaic backboard and photovoltaic module Download PDFInfo
- Publication number
- CN215342627U CN215342627U CN202121947063.XU CN202121947063U CN215342627U CN 215342627 U CN215342627 U CN 215342627U CN 202121947063 U CN202121947063 U CN 202121947063U CN 215342627 U CN215342627 U CN 215342627U
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- detection reference
- reference line
- glass
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- bottom plate
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- 239000011521 glass Substances 0.000 claims abstract description 89
- 238000001514 detection method Methods 0.000 claims abstract description 75
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000005357 flat glass Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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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 back plate, wherein a detection reference line is arranged on the front surface and/or the back surface of a glass bottom plate, the detection reference line can be identified by naked eyes or an image identification system, after a battery pole piece is pasted on the front surface of the glass bottom plate, whether a creepage distance meets requirements is judged according to whether the battery pole piece shields the detection reference line or not, when the battery pole piece positioned at the edge position of the glass bottom plate shields the detection reference line, the creepage distance after the battery pole piece is pasted does not meet the requirements, and when the battery pole piece positioned at the edge position of the glass bottom plate does not shield the detection reference line, the creepage distance between the battery pole piece and the edge of the glass bottom plate meets the requirements. According to the utility model, whether the creepage distance meets the requirement can be rapidly and accurately judged by detecting whether the reference line is shielded, and other auxiliary tools are not required, so that the efficiency and the accuracy are improved. The photovoltaic module comprises the photovoltaic back plate, and the same technical effect can be achieved.
Description
Technical Field
The utility model relates to the technical field of solar photovoltaics, and further relates to a photovoltaic back plate. In addition, the utility model also relates to a photovoltaic module.
Background
The Creepage Distance (Creepage Distance) is the shortest path between two conductive parts or between a conductive part and an equipment protection interface, measured along an insulating surface. For a photovoltaic module, the creepage distance is the distance from the electric conductor (bus bar, cell) in the photovoltaic module to the edge of the glass, and the creepage distance is an important index for measuring the safety of the photovoltaic module.
Along with the rapid development of photovoltaic trade, photovoltaic module's security and reliability receive more and more attention, and photovoltaic module creepage distance is measured through range upon range of template when range upon range of laying, and range upon range of laying and accomplish before photovoltaic module advances the laminator mainly through the film card measurement photovoltaic module creepage distance, confirm whether unusual in subassembly creepage distance, and this kind of detection mode need be accomplished with the help of extra appurtenance, and the operation is inconvenient.
Traditional photovoltaic module is for guaranteeing electrical safety distance, and great creepage distance is left at the subassembly edge, requires creepage distance to be more than or equal to 10.4mm in the IEC, and traditional photovoltaic module is in order to avoid not in place because of detecting in production, the bad problem of creepage distance that leads to, generally sets creepage distance in about 18mm, just so makes creepage distance about 7.6mm more than the IEC standard, leads to subassembly and glass size grow, material use cost increase.
With the coming of the flat-price internet age, photovoltaic enterprises need to continuously reduce cost and improve efficiency, reduce the creepage distance of components, increase the density of effective power generation areas of photovoltaic components, and become an effective way for reducing the cost of the components and improving the efficiency of the components.
For those skilled in the art, how to quickly and accurately determine whether the creepage distance meets the requirement is a technical problem to be solved at present.
Disclosure of Invention
The utility model provides a photovoltaic backboard, which can rapidly and accurately judge whether a creepage distance meets requirements by utilizing whether a detection reference line which can be identified by naked eyes or an image identification system is shielded or not, and improves the efficiency and the accuracy, and the specific scheme is as follows:
a photovoltaic backboard comprises a glass bottom plate, wherein detection reference lines capable of being recognized by naked eyes or an image recognition system are arranged on the front surface and/or the back surface of the glass bottom plate, and the detection reference lines are correspondingly arranged on the edges of the glass bottom plate respectively; the distance between the detection reference line and the edge of the glass bottom plate is a creepage distance;
the front surface of the glass bottom plate is used for mounting battery pole pieces in an array mode, and whether the creepage distance meets the requirement is judged according to whether the battery pole pieces close to the edge of the glass bottom plate block the detection reference line.
Optionally, the color of the detection reference line is different from the color of the glass base plate and/or the detection reference line is coated with a fluorescent paint; the detection reference line is directly exposed outside or coated with a transparent coating. Optionally, the detection reference line is a straight line or a wavy line.
Alternatively, the detection reference line is a solid line, a dotted line, or formed by repeating the same pattern.
Optionally, two or more detection reference lines corresponding to the same edge are arranged in parallel.
Optionally, the creepage distance between the detection reference line and the edge of the glass bottom plate ranges from 10.4mm to 18 mm.
Optionally, the glass base plate is a rectangular glass panel, and the detection reference line is parallel to the edge of the glass base plate.
Optionally, the front surface or the back surface of the glass base plate is coated with a reflective coating, and the reflective coating is located on the periphery of the battery pole piece and can reflect light.
The utility model also provides a photovoltaic module, which comprises the photovoltaic back plate, a battery pole piece and front plate glass, wherein the battery pole piece is clamped between the front plate glass and the glass bottom plate.
Optionally, glue layers are respectively coated between the battery pole piece and the front glass plate and between the battery pole piece and the glass bottom plate for bonding and fixing.
The utility model provides a photovoltaic backboard.A detection reference line is arranged on the front side and/or the back side of a glass bottom plate and can be identified by naked eyes or an image identification system, the edges of the glass bottom plate are respectively and correspondingly provided with the detection reference line, the detection reference line is preset on the glass bottom plate, the distance between the detection reference line and the edge of the glass bottom plate is predetermined, and the distance is a creepage distance; after a battery pole piece is pasted on the front face of the glass bottom plate, whether the creepage distance meets the requirement is judged according to whether the battery pole piece shields the detection reference line, when the battery pole piece positioned at the edge position of the glass bottom plate shields the detection reference line, the distance between the battery pole piece and the edge of the glass bottom plate is too close, the creepage distance after the battery pole piece is pasted does not meet the requirement, and when the battery pole piece positioned at the edge position of the glass bottom plate does not shield the detection reference line, the distance between the battery pole piece and the edge of the glass bottom plate meets the requirement of the creepage distance. According to the utility model, whether the creepage distance meets the requirement can be rapidly and accurately judged by using whether the detection reference line which can be identified by naked eyes or an image identification system is shielded, and other auxiliary tools are not required, so that the efficiency and the accuracy are improved. The photovoltaic module comprises the photovoltaic back plate, and the same technical effect can be achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a glass substrate;
FIG. 2 is a schematic view of the structure after the battery pole piece is mounted;
FIG. 3 is an enlarged partial view of the dashed box portion of FIG. 2;
fig. 4 is a partial structural cross-sectional view of a photovoltaic module.
The figure includes:
the device comprises a glass bottom plate 1, a detection reference line 2, a battery pole piece 3, a reflective coating 4 and a positive plate glass 5.
Detailed Description
The core of the utility model is to provide the photovoltaic back plate, whether the creepage distance meets the requirement is rapidly and accurately judged by using whether the detection reference line which can be identified by naked eyes or an image identification system is shielded, and the efficiency and the accuracy are improved.
In order to make those skilled in the art better understand the technical solution of the present invention, the photovoltaic back sheet and the photovoltaic module of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The photovoltaic back plate provided by the utility model is applied to a photovoltaic module to realize solar power generation, and comprises a glass bottom plate 1, wherein FIG. 1 is a schematic structural diagram of the glass bottom plate; FIG. 2 is a schematic view of the structure after the battery pole piece is mounted; the glass bottom plate 1 is the main body structure of the photovoltaic backboard, the detection reference lines 2 capable of being identified by naked eyes or an image identification system are arranged on the front surface and/or the back surface of the glass bottom plate 1, and the detection reference lines 2 have three setting modes and can be respectively arranged on the front surface or the back surface of the glass bottom plate 1 and also can be simultaneously arranged on the front surface and the back surface of the glass bottom plate 1. The glass substrate 1 has a certain transparency, and can be observed whether the detection reference line 2 is located on the normal or back surface of the glass substrate 1. Since the battery pole piece 3 is attached to the front surface of the glass substrate 1, the detection reference line 2 is preferably located on the front surface of the glass substrate 1.
The edge of the glass bottom plate 1 is correspondingly provided with a detection reference line 2, the detection reference lines 2 are in butt joint end to form a frame line, and the frame line is smaller than the plate surface of the glass bottom plate 1. The distance between the detection reference line 2 and the edge of the glass base plate 1 corresponding to the detection reference line is a creepage distance, that is, when the distance between the battery pole piece 3 and the edge of the glass base plate 1 is smaller than the creepage distance, the creepage distance is considered to be not qualified.
During production, the battery pole pieces 3 are pasted on the front surface of the glass bottom plate 1 in an array manner, usually one row is pasted, a plurality of battery pole pieces 3 closest to the front surface of the glass bottom plate are respectively arranged on each side edge of the glass bottom plate 1, and whether the creepage distance meets the requirement is judged according to whether the battery pole pieces 3 close to the edge of the glass bottom plate 1 shield the detection reference line 2; the judgment basis is as follows: if the battery pole piece 3 closest to the edge shields the detection reference line 2, the battery pole piece 3 is too close to the edge of the glass bottom plate 1, and the creepage distance does not meet the requirement; and if the battery pole piece 3 closest to the edge does not shield the detection reference line 2, the creepage distance of the battery pole piece 3 meets the requirement.
By adopting the photovoltaic backboard provided by the utility model, the detection reference line 2 is preset on the glass bottom plate 1, whether the creepage distance meets the requirement can be judged quickly and accurately by utilizing whether the detection reference line 2 which can be identified by naked eyes or an image identification system is shielded, and no other auxiliary tool is needed, so that the efficiency and the accuracy are improved; when processing glass bottom plate 1, no longer need reserve great fault-tolerant distance to reduce the whole size and the material quantity of subassembly, reduce the subassembly cost.
On the basis of the above scheme, the detection reference line 2 provided by the utility model has various different forms, preferably the following forms:
the color of the reference line 2 is detected to be different from that of the glass bottom plate 1, and/or the reference line 2 is detected to be coated with fluorescent paint, and the color difference and the fluorescent paint can exist at the same time or can be selected for application; the larger the difference degree between the color of the detection reference line 2 and the color of the glass bottom plate 1 is, the easier the detection reference line is perceived and identified by naked eyes or an image identification system; the fluorescent material coated on the detection reference line 2 can also facilitate observation and identification under the condition of poor ambient light conditions.
The detection reference line 2 is coated on the outer surface of the glass base plate 1, no material is covered on the detection reference line 2 any more, and the detection reference line 2 is directly exposed outside. Or the transparent coating is coated on the detection reference line 2, so that the transparent coating does not influence normal observation, and a certain protection effect is achieved on the detection reference line 2.
Regarding the appearance of the detection reference line 2, a straight line or a wave line can be adopted, the straight line is arranged in parallel with the edge of the glass bottom plate 1, the wave line can also be arranged in parallel with the edge of the glass bottom plate 1, at this time, the wave line is not parallel with the edge, the wave line has wave crests and wave troughs, a connecting line between two adjacent wave crests is kept parallel with the edge of the glass bottom plate 1, and judgment is made by observing whether the straight line or the wave line is shielded.
The detection reference line 2 is a solid line, a dotted line or formed by repeated arrangement of the same figures, the solid line is a complete continuous line, the dotted line is a dot-dash line distributed at intervals, the repeated arrangement of the figures can be formed by spaced arrangement of the same shapes such as triangle, rectangle and circle, the arrangement form can be a straight line or a wavy line, and the regular change is presented.
Preferably, two or more detection reference lines 2 corresponding to the same edge are arranged in parallel, if more than three detection reference lines are arranged, the distance between the parallel detection reference lines 2 is equal, the distance grade between the battery pole piece 3 and the edge of the glass bottom plate 1 can be known by observing whether the detection reference lines 2 are shielded or the shielding quantity, and the flaw grade can be judged; the parallel detection reference lines 2 can be respectively marked with numbers for identification.
Preferably, the creepage distance between the detection reference line 2 and the edge of the glass base plate 1 in the utility model is in the range of 10.4-18 mm, including two end points, and the distance between the edge of the glass base plate 1 and the detection reference line 2 is not less than 10.4mm at least and not more than 18mm at most.
Specifically, the glass bottom plate 1 adopted in the utility model is a rectangular glass panel, the detection reference lines 2 are parallel to the edges of the glass bottom plate 1, each edge of the rectangular glass panel corresponds to the detection reference line 2, and the detection reference lines 2 are butted end to form a rectangular frame.
On the basis of any one of the technical schemes and the combination thereof, the front surface or the back surface of the glass bottom plate 1 is coated with the reflective coating 4, and the reflective coating 4 is positioned at the periphery of the battery pole piece 3 and can reflect light rays. Fig. 3 is a partially enlarged view of a dotted-line frame portion in fig. 2, a reflective coating 4 is disposed on the surface of the glass substrate 1 at the periphery of the battery pole piece 3, the reflective coating 4 is printed and coated on the surface of the glass substrate 1 in advance, the mounting position of the battery pole piece 3 can be vacated in advance, and the reflective coating is not required to be coated at the position where the battery pole piece 3 is mounted.
The utility model also provides a photovoltaic module, as shown in fig. 4, which is a sectional view of a partial structure of the photovoltaic module; the photovoltaic module comprises the photovoltaic back plate, a battery pole piece 3 and a front plate glass 5, wherein the battery pole piece 3 is clamped between the front plate glass 5 and a glass bottom plate 1.
Glue layers are respectively coated between the battery pole piece 3 and the front plate glass 5 and between the battery pole piece 3 and the glass bottom plate 1 for bonding and fixing, and the glue layers are shown as A in figure 4, so that the battery pole piece 3 is firmly fixed between the battery pole piece 3 and the front plate glass 5.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The photovoltaic backboard is characterized by comprising a glass bottom board (1), wherein detection reference lines (2) capable of being recognized by naked eyes or an image recognition system are arranged on the front surface and/or the back surface of the glass bottom board (1), and the detection reference lines (2) are correspondingly arranged on each edge of the glass bottom board (1) respectively; the distance between the detection reference line (2) and the edge of the glass bottom plate (1) is a creepage distance;
the front surface of the glass bottom plate (1) is used for mounting battery pole pieces (3) in an array mode, and whether the creepage distance meets the requirement or not is judged according to whether the battery pole pieces (3) close to the edge of the glass bottom plate (1) are shielded or not and the detection reference line (2).
2. The photovoltaic backsheet according to claim 1, wherein the color of the detection reference line (2) differs from the color of the glass substrate (1) and/or the detection reference line (2) is coated with a fluorescent paint; the detection reference line (2) is directly exposed outside or coated with a transparent coating.
3. Photovoltaic backsheet according to claim 1, characterized in that the detection reference line (2) is a straight line, or a wavy line.
4. Photovoltaic backsheet according to claim 1, characterized in that the detection reference lines (2) are solid lines, dashed lines, or formed by a repeating arrangement of the same patterns.
5. Photovoltaic backsheet according to claim 1, characterized in that two or more detection reference lines (2) corresponding to the same edge are arranged in parallel.
6. The photovoltaic backsheet according to claim 1, wherein the creepage distance between the detection reference line (2) and the edge of the glass substrate (1) ranges from 10.4 to 18 mm.
7. Photovoltaic backsheet according to claim 1, characterized in that the glass substrate (1) is a rectangular glass panel and the detection reference line (2) is parallel to the edges of the glass substrate (1).
8. The photovoltaic backsheet according to any one of claims 1 to 7, wherein the glass substrate (1) is coated on the front or back side with a reflective coating (4), said reflective coating (4) being located at the periphery of the cell pole piece (3) and being capable of reflecting light.
9. A photovoltaic module comprising the photovoltaic back sheet according to any one of claims 1 to 8, further comprising a battery electrode sheet (3) and a front glass sheet (5), wherein the battery electrode sheet (3) is sandwiched between the front glass sheet (5) and the glass base sheet (1).
10. The photovoltaic module according to claim 9, wherein the battery pole piece (3) and the front glass (5) and the battery pole piece (3) and the glass base plate (1) are respectively bonded and fixed by coating glue layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121947063.XU CN215342627U (en) | 2021-08-18 | 2021-08-18 | Photovoltaic backboard and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121947063.XU CN215342627U (en) | 2021-08-18 | 2021-08-18 | Photovoltaic backboard and photovoltaic module |
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| Publication Number | Publication Date |
|---|---|
| CN215342627U true CN215342627U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121947063.XU Active CN215342627U (en) | 2021-08-18 | 2021-08-18 | Photovoltaic backboard and photovoltaic module |
Country Status (1)
| Country | Link |
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| CN (1) | CN215342627U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322790A (en) * | 2022-01-05 | 2022-04-12 | 海宁正泰新能源科技有限公司 | Photovoltaic module semi-finished product creepage distance detection device and method |
-
2021
- 2021-08-18 CN CN202121947063.XU patent/CN215342627U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322790A (en) * | 2022-01-05 | 2022-04-12 | 海宁正泰新能源科技有限公司 | Photovoltaic module semi-finished product creepage distance detection device and method |
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Address after: 314400 No. 1 Jisheng Road, Jiaxing City, Zhejiang Province, Jianshan New District, Haining City Patentee after: Zhengtai Xinneng Technology Co.,Ltd. Address before: No.1 Jisheng Road, Jianshan New District, Haining City, Jiaxing City, Zhejiang Province Patentee before: HAINING ASTRONERGY TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 314400 No. 1 Jisheng Road, Jiaxing City, Zhejiang Province, Jianshan New District, Haining City Patentee after: Zhengtai Xinneng Technology Co.,Ltd. Address before: 314400 No. 1 Jisheng Road, Jiaxing City, Zhejiang Province, Jianshan New District, Haining City Patentee before: Zhengtai Xinneng Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |