CN217335525U

CN217335525U - Photovoltaic cell's frame subassembly and photovoltaic module

Info

Publication number: CN217335525U
Application number: CN202220855403.4U
Authority: CN
Inventors: 卢国伟; 邓士锋; 孟小伟; 刘长宇; 赵亚婷
Original assignee: CSI Cells Co Ltd; Canadian Solar Manufacturing Changshu Inc
Current assignee: CSI Cells Co Ltd; Canadian Solar Manufacturing Changshu Inc
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-08-30
Anticipated expiration: 2032-04-14

Abstract

The utility model discloses a photovoltaic cell's frame subassembly and photovoltaic module, photovoltaic cell's frame subassembly includes: the lower frame is an integrally formed frame; the upper frame is an integrally formed frame, the upper frame is arranged above the lower frame, and the bottom of the upper frame is in sealing fit with the top of the lower frame. Through the sealed cooperation of integrated into one piece's last frame and integrated into one piece's lower frame, replaced four original frames well and constituted the design of whole frame, can not have the gap design of edge like this, prevented steam from the gap invasion of edge, effectively solved the problem that edge photovoltaic cell blackened to improve photovoltaic module's waterproof nature and use reliability. In addition, can also reduce the design of the angle sign indicating number of four original frames, so not only reduce the cost and the weight of frame subassembly to can also reduce the glued membrane and tear the risk that leads to the frame to damage and take place bodily injury inadequately open.

Description

Photovoltaic cell's frame subassembly and photovoltaic module

Technical Field

The utility model belongs to the technical field of the photovoltaic cell technique and specifically relates to a frame subassembly and photovoltaic module of photovoltaic cell are related to.

Background

With the advancement of advanced technology and the demand of the market, the demand for high power of the photovoltaic cell is high. At present, a crystal silicon heterojunction solar cell technology is concerned, and the solar cell effectively improves open-circuit voltage due to the adoption of a better passivation technology, but the cell is very afraid of water, and long-term outdoor power in a damp and hot area has the risk of power attenuation, so that the high-efficiency and high-power component of the type puts higher requirements on packaging materials and frame design.

In the related art, the frame design is usually an integral frame assembled by four frames, and corner connectors are adopted at the peripheral corners, so that the structural stability of the frame and the installation stability of the photovoltaic cell installed in the frame are ensured. However, after the current crystalline silicon heterojunction solar cell module is subjected to wet leakage testing, a local battery blackening phenomenon occurs at the corners of the frame, the series resistance is obviously reduced after the testing, and analysis mainly results in that water vapor is easy to invade due to the obvious gaps at the corners, so that the local battery blackening phenomenon is realized, and the frame damage or glue overflow can occur at the seams of the frame, so that the appearance of the photovoltaic module is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a photovoltaic cell's frame subassembly designs the frame subassembly into the equipment of frame and lower frame to both are integrated into one piece's frame, can not have the gap of edge like this, effectively prevent the steam invasion and improve and use the reliability.

The utility model also provides a photovoltaic module.

According to the utility model discloses a photovoltaic cell's frame subassembly of the embodiment of first aspect, photovoltaic cell's frame subassembly includes: the lower frame is an integrally formed frame; the upper frame is an integrally formed frame, the upper frame is arranged above the lower frame, and the bottom of the upper frame is in sealing fit with the top of the lower frame.

According to the frame component of the photovoltaic cell, the frame component of the photovoltaic cell is designed into the upper frame and the lower frame, the upper frame and the lower frame are integrally formed frames, and the upper frame and the lower frame are matched in a sealing manner, on one hand, the integrally formed frame design replaces the design that the original four frames form the whole frame, so that the gap design at the edge can not exist, water vapor is prevented from invading from the gap, the problem that the photovoltaic cell at the edge is blackened is solved, and the waterproofness and the use reliability of the photovoltaic cell are effectively improved; on the other hand, the design of the integrally formed frame can reduce the design of the corner connectors between the four frames, so that the weight of the frame is greatly reduced, the cost and the weight of the frame assembly are reduced, and the risk that the frame is damaged and personal injury occurs due to inaccurate disassembly of the adhesive film can be reduced.

According to the utility model discloses a some embodiments, the bottom of going up the frame is provided with first grafting portion, the top of lower frame is provided with second grafting portion, first grafting portion with the cooperation of pegging graft of second grafting portion.

According to some embodiments of the present invention, the first inserting portion is one of the slot and the inserting strip, the second inserting portion is another of the slot and the inserting strip, and the inserting strip is inserted into the slot.

According to some embodiments of the utility model, photovoltaic cell's frame subassembly still includes: and the sealing element is arranged in the slot and is in sealing fit with the plug strip.

According to some embodiments of the invention, the depth of the slot is greater than the height of the strip; and/or the width of the slot is less than or equal to the thickness of the plug strip.

According to some embodiments of the present invention, the first insertion portion is provided continuously on the peripheral side of the bottom end surface of the upper frame, and the second insertion portion is provided continuously on the peripheral side of the top end surface of the lower frame.

According to some embodiments of the present invention, the top of the lower frame is provided with an upwardly convex annular flange, the second insertion part being provided on the annular flange.

According to some embodiments of the present invention, the upper rim comprises: the upper side plate part is bent relative to the upper top plate part, and the upper side plate part is provided with the first plug-in part; and/or

The lower frame includes: the lower top plate part is connected with the space between the lower top plate part and the lower bottom plate part, and the lower top plate part is provided with the second plugging part.

According to some embodiments of the present invention, the upper frame is a rectangular frame, and an upper chamfer for transition is provided at an end corner of the upper frame; and/or the lower frame is a rectangular frame, and a lower chamfer angle for transition is arranged at the end corner of the lower frame.

According to the utility model discloses a photovoltaic module of embodiment of second aspect includes: the photovoltaic cell frame assembly is provided.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a frame assembly of a photovoltaic cell according to an embodiment of the present invention;

fig. 2 is an exploded view of a frame assembly of a photovoltaic cell according to an embodiment of the present invention;

fig. 3 is a full cross-sectional view of a frame assembly of a photovoltaic cell according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a photovoltaic cell according to an embodiment of the present invention after an explosion of the frame assembly;

FIG. 5 is a partial enlarged view A of FIG. 4;

FIG. 6 is a partial enlarged view B of FIG. 4;

fig. 7 is a partial cross-sectional view of a frame assembly of a photovoltaic cell according to an embodiment of the present invention.

Reference numerals:

100. a frame assembly of a photovoltaic cell;

10. a lower frame; 11. a second insertion part; 12. an annular flange; 13. a lower ceiling portion; 14. a lower floor portion; 15. a lower side plate portion; 16. lower chamfering; 17. a chamber;

20. an upper frame; 21. a first insertion part; 22. an upper ceiling portion; 23. an upper panel section; 24. chamfering; 25. a U-shaped clamping opening; 26. a first side wall; 27. a second side wall; 28. a glue collecting opening; 29. a lip.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A frame assembly 100 for a photovoltaic cell according to an embodiment of the present invention is described below with reference to fig. 1 to 7.

As shown in fig. 1 and 2, the frame assembly 100 of the photovoltaic cell includes: lower frame 10 and last frame 20, lower frame 10 and last frame 20 are integrated into one piece's frame, and last frame 20 sets up in the top of lower frame 10, and the bottom of last frame 20 and the top of lower frame 10 are sealed to be cooperated. So set up, it is different with four traditional frames constitute a whole frame, photovoltaic cell's frame subassembly 100 is a whole with four frame designs, and divide into integrated into one piece's last frame 20 and integrated into one piece's lower frame 10, just so can not have the seam position of edge, on the one hand, can prevent steam from invading from the seam position of edge, lead to the problem that photovoltaic cell four corners blackened, effectively improve photovoltaic cell's frame subassembly 100's waterproof performance, and improve photovoltaic cell's use reliability, on the other hand, can avoid taking place the problem that the frame damaged or overflowed glue at the seam position, effectively improve photovoltaic cell's frame subassembly 100's outward appearance.

And, through the sealed cooperation in the bottom of last frame 20 and the top of lower frame 10, can guarantee that photovoltaic cell's frame subassembly 100 effectively bears photovoltaic cell, be difficult to make the frame break off to compare with the sealed mode that four frames utilized the angle sign indicating number, such simple structure, easy to assemble, but also can reduce photovoltaic cell's frame subassembly 100's cost and weight, and effectively reduce the glued membrane and tear the risk that leads to the frame to damage and take place bodily injury inadequately.

Therefore, the sealing fit of the integrally formed upper frame 20 and the integrally formed lower frame 10 replaces the structural design of the traditional integral frame formed by four frames, so that the gap position at the edge of the frame cannot exist, on one hand, water vapor can be prevented from invading from the gap position at the edge, and the problem that the photovoltaic cell at the edge of the frame is blackened is effectively solved, so that the waterproofness and the use reliability of the frame assembly 100 of the photovoltaic cell are improved, meanwhile, the problem that the frame is damaged or overflows glue at the seam can be avoided, and the appearance of the frame assembly 100 of the photovoltaic cell is effectively improved; on the other hand, replaced the design of the angle sign indicating number of four traditional frames, can effectively reduce photovoltaic cell's frame subassembly 100's cost and weight like this to can also effectively reduce the glued membrane and tear the risk that the frame damages and takes place bodily injury that leads to inadequately open.

As shown in fig. 3-7, the bottom of the upper frame 20 is provided with a first insertion portion 21, the top of the lower frame 10 is provided with a second insertion portion 11, and the first insertion portion 21 and the second insertion portion 11 are inserted and matched. So set up, through the grafting cooperation of first grafting portion 21 and second grafting portion 11, can realize going up the reliability between frame 20 and the lower frame 10 and connect, thereby guaranteed photovoltaic cell's frame subassembly 100's structural stability and bearing capacity, and prolonged the invasion route of steam from the gap position between last frame 20 and the lower frame 10, make steam be difficult to invade photovoltaic cell's frame subassembly 100, improved photovoltaic cell's frame subassembly 100's highly reliable waterproof performance.

The first inserting portion 21 may be one of a slot and an inserting strip, and the second inserting portion 11 may be the other of the slot and the inserting strip, and the inserting strip is inserted into the slot. That is to say, first grafting portion 21 is the slot, then second grafting portion 11 is the grafting strip, otherwise, first grafting portion 21 is the grafting strip, then second grafting portion 11 is the slot, through the grafting cooperation of slot and grafting strip, can make last frame 20 and lower frame 10 closely cooperate together, be difficult to break away from each other to simple manufacture, easy to assemble and dismantlement. Specifically, as shown in fig. 5 and 6, the bottom of the upper frame 20 is provided with a slot, and the top of the lower frame 10 is provided with a plug strip. With the arrangement, the inserting strips of the lower frame 10 can be inserted into the slots of the upper frame 20, so as to form an integral frame, and effectively ensure the sealing fit of the frame assembly 100 of the photovoltaic cell.

Moreover, the frame assembly 100 of the photovoltaic cell further includes: and the sealing element is arranged in the slot and is in sealing fit with the plug strip. So set up, through the sealed cooperation of sealing member with the grafting strip, can guarantee the sealed cooperation between frame 20 and the lower frame 10 better to effectively prevent the steam invasion, avoid photovoltaic cell's the phenomenon that blackens to appear in the corner all around.

Specifically, the sealing member can be sealed glue, before the plug strip inserts the slot, can pour into sealed glue in the slot, can make sealed glue and plug strip cooperate fully like this, has not only guaranteed the sealing reliability between last frame 20 and the lower frame 10, can also strengthen the connection reliability between last frame 20 and the lower frame 10, prevents to go up frame 20 and lower frame 10 and breaks away from each other to the connecting fastener of last frame 20 and lower frame 10 has been saved. Of course, the sealing member includes, but is not limited to, a sealant.

And the depth of the slot is greater than the height of the insertion strip or the width of the slot is less than or equal to the thickness of the insertion strip, or the depth of the slot is greater than the height of the insertion strip and the width of the slot is less than or equal to the thickness of the insertion strip. Wherein, the degree of depth of slot is greater than the height of grafting strip, on the one hand, can guarantee certain dimensional tolerance in the course of working, ensures the preparation precision, and on the other hand can make and leave certain space between slot and the grafting strip to can set up the sealing member in the slot, in order to guarantee the leakproofness between frame 20 and the lower frame 10. And the width of the slot is less than or equal to the thickness of the inserting strip, so that the slot and the inserting strip are in interference fit, the tight fit between the inserting strip and the slot is ensured, and the problem of falling in the transportation or use process is not easy to occur. In addition, the width of the slot can be properly larger than the thickness of the plug strip, namely a certain dimensional tolerance is designed to ensure the manufacturing error in processing. Thus, the associated design of the depth of the slot and the height of the strip, as well as the associated design of the width of the slot and the thickness of the strip, can be suitably adjusted to ensure a tight fit between the slot and the strip.

Further, the first insertion portion 21 is continuously disposed on the peripheral side of the bottom end surface of the upper frame 20, and the second insertion portion 11 is continuously disposed on the peripheral side of the top end surface of the lower frame 10. That is to say, can set up the first grafting portion 21 of continuous connection all around of the bottom terminal surface of last frame 20, correspondingly, can set up the second grafting portion 11 of continuous connection all around of the bottom terminal surface of lower frame 10, through the sealed cooperation of first grafting portion 21 and second grafting portion 11, both can guarantee the reliable sealed between last frame 20 and the lower frame 10, in order to prevent steam from invading all around of photovoltaic cell's frame subassembly 100, can also guarantee the connection reliability between last frame 20 and the lower frame 10, in order to improve photovoltaic cell's frame subassembly 100's structural stability, thereby can bear photovoltaic cell. In addition, the layout design of first inserting part 21 and second inserting part 11 makes things convenient for the preparation of mould and the integrated into one piece of last frame 20 and lower frame 10, can adopt the mode of punching press preparation shaping, can guarantee the structural strength and the preparation precision of last frame 20 and lower frame 10.

Or, a first inserting part 21 is arranged at the corner position of the bottom end surface of the upper frame 20, and a second inserting part 11 is arranged at the corner position of the top end surface of the lower frame 10. So set up, can set up first grafting portion 21 and second grafting portion 11 respectively at the corner position of last frame 20 and the corner position of lower frame 10, also can solve the problem that steam invaded from the gap position of corner like this, can practice thrift processing material, reduce cost and weight simultaneously.

In addition, the top of the lower frame 10 is provided with an annular flange 12 protruding upward, and the second socket part 11 is provided on the annular flange 12. That is to say, be provided with convex annular flange 12 at the top end face of lower frame 10 to set up second grafting portion 11 on annular flange 12, compare the design that sets up second grafting portion 11 at the top end face of lower frame 10, can improve the structural reliability of second grafting portion 11 like this, in the grafting cooperation of second grafting portion 11 and first grafting portion 21, be difficult to make second grafting portion 11 fracture, thereby guaranteed the sealed cooperation between last frame 20 and lower frame 10.

As shown in fig. 5, the upper frame 20 includes: the upper plate portion 23 is bent with respect to the upper top plate portion 22, and the upper plate portion 23 is provided with a first mating portion 21. With such an arrangement, the upper frame 20 is in an inverted L shape, and the first inserting portion 21 is disposed at the bottom of the upper side plate portion 23 to facilitate inserting and matching with the second inserting portion 11 of the lower frame 10.

As shown in fig. 6, the lower bezel 10 includes: the lower ceiling portion 13, the lower ceiling portion 14 and at least two lower ceiling portions 15, at least two lower ceiling portions 15 are connected between the lower ceiling portion 13 and the lower ceiling portion 14, and the lower ceiling portion 13 is provided with the second mating portion 11. With such an arrangement, the second inserting portion 11 is disposed at the top of the lower top plate portion 13, and can be inserted into the first inserting portion 21 correspondingly, so as to ensure the sealing fit between the upper frame 20 and the lower frame 10. And, at least two lower side plate portions 15 are connected between the lower top plate portion 13 and the lower bottom plate portion 14, so that a cavity 17 is formed between the lower top plate portion 13 and the lower bottom plate portion 14, while ensuring that the lower frame 10 has sufficient structural strength and rigidity, on the one hand, the lower frame can play a role in suspending intervals, and on the other hand, the lower frame can effectively save processing materials, thereby reducing the manufacturing cost and weight of the lower frame 10.

Referring to fig. 7, a U-shaped clipping opening 25 is formed between the upper top plate portion 22 of the upper frame 20 and the lower top plate portion 13 of the lower frame 10, the U-shaped clipping opening 25 includes a first side wall 26 and a second side wall 27 which are oppositely arranged, the first side wall 26 and the second side wall 27 are parallel to the lower bottom plate portion 14, an inner surface of the first side wall 26 is formed with an inward glue collecting opening 28, and two ends of the glue collecting opening 28 are respectively formed with a protruding lip 29. So set up, set up the receipts mouth of gluing 28 that has lip limit 29 on the first side wall 26 of U-shaped double-layered mouth 25, can be used for filling sealed glue, guarantee the leakproofness between first side wall 26 and the photovoltaic cell, simultaneously through the setting of lip limit 29, can avoid breaking away from of colloid, guarantee the steadiness of colloid.

And the glue collecting opening 28 is arranged at the opening close to the U-shaped clamping opening 25. So set up, receive gluey mouth 28 and be close to the U-shaped opening position of pressing from both sides 25, convenient sealed filling of gluing.

And, the end of the first sidewall 26 has an arcuate surface that forms an angled entrance with the surface of the photovoltaic cell. So set up, the arc surface can guarantee to form into gluey mouth between first lateral wall 26 opening position and photovoltaic cell, makes things convenient for sealed glue to extrude into from going into gluey mouth and receives gluey mouth 28.

In addition, the upper frame 20 may be a rectangular frame, the upper corners of the upper frame 20 are provided with upper chamfers 24 for transition, the lower frame 10 may be a rectangular frame, and the lower corners of the lower frame 10 are provided with lower chamfers 16 for transition. So set up, go up the chamfer design of frame 20 and lower frame 10, on the one hand, can cooperate current mainstream glass's chamfer design well, can reduce the risk of photovoltaic cell and photovoltaic cell's frame subassembly 100 collision when installing photovoltaic cell, on the other hand, the excessive gluey risk in four corners that brings when having reduced the glass among the installation photovoltaic cell, the production processes have been made things convenient for, can control the sealed use amount of gluing between photovoltaic cell's frame subassembly 100 and the glass better, reduce extravagant and reduce cost, and can spill over sealed glue on glass more easily, make and carry out effectual buffering between photovoltaic cell's frame subassembly 100 and the glass, thereby improve the installation stability between photovoltaic cell and photovoltaic cell's the frame subassembly 100, effectively improve photovoltaic cell's life.

According to the utility model discloses a photovoltaic module of embodiment of second aspect includes: the frame assembly 100 of the photovoltaic cell of the above embodiment.

Therefore, the sealing fit of the integrally formed upper frame 20 and the integrally formed lower frame 10 replaces the structural design of the traditional integral frame formed by four frames, so that the gap position at the edge of the frame cannot exist, on one hand, water vapor can be prevented from invading from the gap, and the problem that the photovoltaic cell at the edge of the frame is blackened is effectively solved, so that the waterproofness of the frame assembly 100 of the photovoltaic cell and the use reliability of the photovoltaic assembly are improved, meanwhile, the problem that the frame is damaged or overflows glue at the seam can be avoided, and the appearance of the frame assembly 100 of the photovoltaic cell is effectively improved; on the other hand, replaced the design of the angle sign indicating number of four traditional frames, the weight of the frame that has significantly reduced like this can effectively reduce photovoltaic cell's frame subassembly 100's cost and weight to can also effectively reduce the glued membrane and tear the risk that leads to the frame to damage and take place bodily injury inadequately open.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A photovoltaic cell's frame subassembly, its characterized in that includes:

the lower frame is an integrally formed frame; and

the upper frame is an integrally formed frame, the upper frame is arranged above the lower frame, and the bottom of the upper frame is in sealing fit with the top of the lower frame.

2. The photovoltaic cell border assembly according to claim 1, wherein a first insertion portion is disposed at a bottom of the upper border, a second insertion portion is disposed at a top of the lower border, and the first insertion portion and the second insertion portion are inserted and matched.

3. The photovoltaic cell border assembly according to claim 2, wherein the first insertion portion is one of a slot and an insertion strip, the second insertion portion is the other of the slot and the insertion strip, and the insertion strip is inserted into the slot.

4. The border assembly of a photovoltaic cell of claim 3, further comprising: and the sealing element is arranged in the slot and is in sealing fit with the plug strip.

5. The border assembly of photovoltaic cells of claim 3, wherein the depth of the slots is greater than the height of the strips; and/or the presence of a gas in the gas,

the width of the slot is less than or equal to the thickness of the inserting strip.

6. The frame assembly of claim 2, wherein the first mating portion is disposed continuously around a bottom end surface of the upper frame, and the second mating portion is disposed continuously around a top end surface of the lower frame.

7. The photovoltaic cell border assembly according to claim 2, wherein an annular flange protruding upward is disposed on a top portion of the lower border, and the second insertion portion is disposed on the annular flange.

8. The border assembly of a photovoltaic cell of claim 2, wherein the upper border comprises: the upper side plate part is bent relative to the upper top plate part, and the upper side plate part is provided with the first plug-in part; and/or

9. The frame assembly of a photovoltaic cell according to claim 1, wherein the upper frame is a rectangular frame, and upper chamfers for transition are arranged at end corners of the upper frame; and/or

The lower frame is a rectangular frame, and a lower chamfer angle for transition is arranged at an end corner of the lower frame.

10. A photovoltaic module, comprising: a border assembly of a photovoltaic cell according to any one of claims 1 to 9.