CN214848646U - Photovoltaic module - Google Patents

Photovoltaic module Download PDF

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Publication number
CN214848646U
CN214848646U CN202121553058.0U CN202121553058U CN214848646U CN 214848646 U CN214848646 U CN 214848646U CN 202121553058 U CN202121553058 U CN 202121553058U CN 214848646 U CN214848646 U CN 214848646U
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China
Prior art keywords
preset direction
battery
adhesive
photovoltaic module
shaping
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Active
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CN202121553058.0U
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Chinese (zh)
Inventor
高贝贝
崔艳峰
杨高平
黄强
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Dongfang Risheng Changzhou New Energy Co ltd
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Dongfang Risheng Changzhou New Energy Co ltd
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Priority to CN202121553058.0U priority Critical patent/CN214848646U/en
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Publication of CN214848646U publication Critical patent/CN214848646U/en
Priority to PCT/CN2022/081538 priority patent/WO2023279766A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0224—Electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • 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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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The application provides a photovoltaic module, belongs to photovoltaic cell technical field. The photovoltaic module battery string comprises a plurality of battery pieces distributed along a first preset direction, a conductive belt connected with two adjacent battery pieces in series and adhesive. A plurality of fine grids are distributed on the surface of the battery piece at intervals along a first preset direction; the surface of the battery piece comprises a second area and first areas which are distributed at intervals along a first preset direction and are positioned on two sides of the second area. The conductive belt is provided with a plurality of conductive belt bodies and a plurality of shaping parts, wherein the conductive belt bodies and the shaping parts extend along a first preset direction and are distributed at intervals; in a second preset direction, the size of the shaping part is larger than that of the conductive belt body, and the second preset direction is parallel to the surface of the battery piece and is vertical to the first preset direction. The adhesive is connected between the first region and the shaping part. The photovoltaic module adopts the design without the main grid, and can effectively reduce the unit consumption of the low-temperature silver paste while ensuring the connection reliability of the conductive strips.

Description

Photovoltaic module
Technical Field
The application relates to the technical field of photovoltaic cells, in particular to a photovoltaic module.
Background
Since batteries such as heterojunction adopt low-temperature slurry and low-temperature curing process, the battery plate can not bear the high temperature of 200 ℃. In order to better realize the welding of the cell and the welding strip, in some current processes, photovoltaic modules such as heterojunction and the like adopt a plurality of main grids to be matched with a low-temperature welding strip to realize low-temperature welding; in other current processes, photovoltaic modules such as heterojunctions employ a tiling technique.
In the process of realizing low-temperature welding by matching the multi-main grid with the low-temperature welding strip, the unit consumption of the low-temperature silver paste of the cell is higher, for example, the unit consumption of the low-temperature silver paste of the heterojunction cell is about 200 mg/sheet. According to the photovoltaic cells of the single crystal cell and the polycrystalline cell, the cost of the photovoltaic silver paste accounts for 10-11%; in a new generation of heterojunction cell, the cost of the photovoltaic silver paste accounts for even 24%, and the importance of the visible photovoltaic silver paste is gradually improved to be one of the core auxiliary materials of the photovoltaic cell. Therefore, the unit consumption of the low-temperature silver paste in the process is high, so that the cost is high.
In the process of adopting the tiling technology, the battery piece is cut into 5 or 6 pieces, and the positive and negative electrodes between the pieces are connected, and the main grid line welding disc is designed in the battery piece, so that the cost is high.
SUMMERY OF THE UTILITY MODEL
An object of this application is to provide a photovoltaic module adopts no main grid design, when guaranteeing the reliability that the conduction band is connected, can effectively reduce low temperature silver thick liquid unit consumption.
The embodiment of the application is realized as follows:
the embodiment of the application provides a photovoltaic module, including battery cluster, be located the encapsulation glued membrane of battery cluster surface and be located the encapsulation glass of encapsulation glued membrane surface. The battery string comprises battery pieces, conductive strips and adhesive.
The battery pieces are distributed along a first preset direction; a plurality of fine grids are distributed on the surface of the battery piece at intervals along a first preset direction; the surface of the battery piece comprises a second area and first areas positioned on two sides of the first area, and the first areas are areas close to two ends in a first preset direction in the surface of the battery piece.
The conductive belt is connected with two adjacent battery pieces in series; the conductive belt is provided with a plurality of conductive belt bodies and a plurality of shaping parts, wherein the conductive belt bodies and the shaping parts extend along a first preset direction and are distributed at intervals; in a second preset direction, the size of the shaping part is larger than that of the conductive belt body, and the second preset direction is parallel to the surface of the battery piece and is perpendicular to the first preset direction.
The adhesive is connected between the first region and the shaping part.
Among the above-mentioned technical scheme, the thin bars in the second region on the surface of battery piece and the direct electrical contact of conduction band body, the first region on the surface of battery piece links to each other with plastic portion through the adhesive cement, has realized that the battery piece does not have the design of main bars, can effectively reduce low temperature silver thick liquid unit consumption. The adhesive is convenient to use and meets the low-temperature connection requirement and the outdoor weather resistance requirement of the battery piece; meanwhile, the shaping part with the larger width in the second preset direction is bonded with the bonding glue, so that reliable bonding acting force can be provided between the conductive belt and the battery piece, and the battery string can achieve the reliability equivalent to that of a conventional assembly with the pad main grid.
In some optional embodiments, the size of the adhesive glue in the first preset direction is 1.8-2.0 mm.
In the technical scheme, the length of the bonding glue in the second preset direction is proper, so that the bonding glue can reliably bond the battery piece and the shaping part.
In some optional embodiments, the distance from the bonding glue to the end of the cell piece in the first preset direction is 4.2-6.6 mm.
In some optional embodiments, in the first preset direction, the distance between two adjacent fine grids is 1.9-2 mm; the number of the fine grids on one side of the bonding glue close to the end part of the cell is 3-4.
In the technical scheme, the bonding glue is a proper distance away from the end part of the battery piece, so that on one hand, the phenomenon that the shaping part is too long due to too large distance between the bonding glue and the end part of the battery piece is effectively avoided, and the shielding area of the conductive belt on the surface of the battery piece can be effectively controlled; on the other hand, the phenomenon of glue overflow caused by the fact that the distance between the bonding glue and the end part of the battery piece is too small is effectively avoided.
In some alternative embodiments, the adhesive is located between two adjacent fine grids.
In the technical scheme, the bonding glue is arranged between two adjacent thin grids, and when the bonding glue with different conductivity is used, the shaping part and the thin grids can be electrically connected well; when the conductive adhesive is used, the shielding of the fine grid due to poor light transmission of the conductive adhesive can be effectively avoided.
In some optional embodiments, the plurality of shaping parts are a first shaping part located at two ends of the conductive belt body and a second shaping part located in the middle of the conductive belt body, and two ends of the second shaping part in the first preset direction respectively correspond to the first regions of two adjacent battery pieces.
In the technical scheme, two adjacent end parts of the two battery pieces correspond to the same shaping part, so that the photovoltaic conductive belt is simpler to arrange; meanwhile, the second reshaping part extends from the front edge of one battery piece to the back edge of the other battery piece, and when the reshaping part is set to be of a flat structure with small thickness, the cell spacing is favorably reduced.
In some optional embodiments, in the first preset direction, the size of the first shaping part is 6-7 mm, and the size of the second shaping part is 12-14 mm.
In some optional embodiments, in the second predetermined direction, the size of the conductive strip body is 0.1 to 0.3mm, the size of the shaping portion is 0.5 to 0.6mm, and the size of the adhesive glue is 0.7 to 0.8 mm.
Among the above-mentioned technical scheme, plastic portion and conductive band have suitable size, and the processing of being convenient for when guaranteeing better surface connection through bonding glue and battery piece, can also control the sheltering from on the surface of battery piece effectively.
In some optional embodiments, two adjacent battery pieces are respectively connected in series through 9-20 conductive strips distributed at intervals in the second preset direction.
Among the above-mentioned technical scheme, the conductive band has suitable density, can compromise the demand of high current collection efficiency and little shielding area betterly.
In some optional embodiments, the material of the adhesive is transparent adhesive.
Among the above-mentioned technical scheme, transparent bonding glue has higher luminousness, can effectively reduce the influence of sheltering from the battery piece, is favorable to keeping the work efficiency of battery piece.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a partial cross-sectional view of a photovoltaic module provided in example 1 of the present application;
fig. 2 is a schematic structural diagram of a battery string provided in embodiment 1 of the present application;
FIG. 3 is an enlarged view of a portion of FIG. 2;
fig. 4 is a schematic structural diagram of a conductive strip in a battery string provided in embodiment 1 of the present application;
fig. 5 is a partial cross-sectional view of a battery string provided in embodiment 1 of the present application;
fig. 6 is a schematic partial structure diagram of a battery string provided in embodiment 1 of the present application.
Icon: 10-a photovoltaic module; 100-a battery string; 110-a cell piece; 111-fine gate; 112-a first area; 113-a second region; a 120-conductive band; a 121-conductive band body; 122-a shaping part; 1221-a first shaping portion; 1222-a second shaping portion; 130-adhesive glue; 200-packaging adhesive film; 300-packaging glass; a-a first preset direction; b-a second preset direction; c-a third predetermined direction.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "upper", "lower", "leading", "trailing", and the like refer to positions or positional relationships based on positions or positional relationships shown in the drawings, or positions or positional relationships conventionally found in use of products of the application, and are used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.
Furthermore, the terms "perpendicular" and "parallel" do not require absolute perpendicularity or parallelism between the components, but may be slightly inclined.
In addition, in the description of the present application, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1, the present embodiment provides a photovoltaic module 10, which includes a battery string 100, an encapsulant film 200 disposed on a surface of the battery string 100, and a package glass 300 disposed on a surface of the encapsulant film 200.
It is understood that, in the present application, the materials of the adhesive sealing film 200 and the sealing glass 300 may be selected according to the standard known in the art.
Alternatively, the material of the encapsulant film 200 is, for example, but not limited to, ethylene-vinyl acetate copolymer (EVA), Polyolefin elastomer (POE), or polyvinyl butyral (PVB), such as EVA.
Referring to fig. 2 to 6, in the present application, a battery string 100 includes a battery piece 110, a conductive tape 120 and an adhesive 130.
The length direction of the battery string 100 is a first predetermined direction a, the width direction of the battery string 100 is a second predetermined direction b, and the thickness direction of the battery string 100 is a third predetermined direction c. The first preset direction a and the second preset direction b are both parallel to the surface of the battery piece 110, and the second preset direction b is perpendicular to the first preset direction a; the third predetermined direction c is perpendicular to the surface of the battery sheet 110. In the present application, the surface of the battery sheet 110 refers to the front surface of the battery sheet 110 and the back surface of the battery sheet 110.
Referring to fig. 2 to 3, the plurality of battery pieces 110 are disposed along a first predetermined direction a. As an example, the battery cells 110 in the present embodiment are heterojunction battery cells 110, and each battery cell 110 is a battery half. Of course, in other embodiments, the type and size of the battery power may be adjusted as desired.
In the present embodiment, only the plurality of fine grids 111 are disposed on the surface of the battery piece 110, and the main grid and the bonding pad are not disposed. The fine grids 111 are distributed on the surface of the battery piece 110 at intervals along the first preset direction a.
The surface of the battery cell 110 includes a second region 113 and first regions 112 located at both sides of the second region 113. The second regions 113 are regions of the surface of the battery piece 110 near two ends of the battery piece 110 in the first preset direction a, that is, two first regions 112 in each battery piece 110 are distributed at intervals in the first preset direction a and near the head and tail ends of the battery piece 110 in the first preset direction a.
Referring to fig. 4 to 5, each conductive strip 120 is connected in series to two adjacent battery cells 110. Each conductive strip 120 has a plurality of conductive strip bodies 121 and a plurality of shaping portions 122 extending along the first predetermined direction a and distributed at intervals. In the second predetermined direction b, the size of the shaping portion 122 > the size of the conductive tape body 121.
The conductive strip body 121 is electrically contacted with the fine gate 111 in the second region 113; the shaping portion 122 corresponds to the first region 112, and the adhesive 130 is connected between the first region 112 and the shaping portion 122.
In this application, the battery piece 110 adopts the design of no main grid, can effectively reduce low temperature silver thick liquid unit consumption. The adhesive 130 is convenient to use and meets the low-temperature connection requirement and the outdoor weather resistance requirement of the battery piece 110; meanwhile, the shaping part 122 with a larger width in the second preset direction b is bonded with the adhesive 130, so that a reliable bonding force can be provided between the conductive tape 120 and the battery piece 110, and the battery string 100 can achieve reliability equivalent to that of a conventional assembly with a pad main grid.
It is understood that, in the present application, an appropriate number of conductive strips 120 may be arranged side by side between two adjacent battery cells 110 as needed. As an example, two adjacent battery pieces 110 are respectively connected in series through 9 to 20 conductive strips 120 distributed at intervals in the second preset direction b, and the number of the conductive strips 120 between the two adjacent battery pieces 110 is, for example, 9 or 16, so that the conductive strips 120 have a proper density, and the requirements of high current collection efficiency and small shielding area can be better considered; meanwhile, the matching performance with the existing production line is good.
In order to facilitate the processing of the conductive strip 120, in the embodiment, the size of the shaping portion 122 in the third predetermined direction c is smaller than the size of the conductive strip body 121 in the third predetermined direction c, so that the shaping portion 122 has a flat structure with a width larger than that of the conductive strip body 121 and a thickness smaller than that of the conductive strip body 121.
The arrangement mode is convenient for forming a flat structure by modes of mechanical external force extrusion and the like, and the integrally formed conductive belt 120 is obtained.
As an example, the conductive strip 120 of the present application is obtained by flattening the strip at both ends and the middle part, the non-flattened area is the conductive strip body 121, and the flattened area is the shaping part 122.
The conductive band 120 of the present application can be obtained by a conventional band processing, for example, a band with a circular cross section, the diameter of which is usually 0.1 to 0.3mm, and the width of the flattened portion is usually 0.5 to 0.6 mm. In order to obtain the conductive strip 120 conveniently, in some alternative embodiments, the size of the conductive strip body 121 is 0.1 to 0.3mm and the size of the shaping portion 122 is 0.5 to 0.6mm in the second predetermined direction b.
Considering that the conductive tape 120 extends from the front edge of one battery piece 110 to the back edge of the other battery piece 110 when two adjacent battery pieces 110 are connected in series, in the present embodiment, the shaping portions 122 are divided into a first shaping portion 1221 located at two ends of the conductive tape body 121 and a second shaping portion 1222 located in the middle of the conductive tape body 121, two ends of the second shaping portion 1222 in the first preset direction a respectively correspond to the first regions 112 of the two adjacent battery pieces 110, and the first shaping portion 1221 and the second shaping portion 1222 are connected to the corresponding first regions 112 by the adhesive 130.
In the above arrangement, two adjacent end portions of the two battery pieces 110 correspond to the same shaping portion 122, so that the photovoltaic conductive tape 120 is simpler to arrange. When the shaping portion 122 is formed in a flat structure having a small thickness, it is also advantageous to reduce the pitch of the sheets.
It is to be understood that the type of adhesive paste 130 is not limited in this application and may be variously selected based on considerations such as low temperature bonding requirements, conductivity, shielding and cost, and is illustratively a low temperature (< 160 ℃) curable adhesive paste 130, such as epoxy or silicone based adhesive paste 130, and such as conductive paste ECA.
As an example, in the present embodiment, the material of the adhesive 130 is a transparent adhesive 130. The transparent adhesive 130 has high light transmittance, can effectively reduce the influence of shielding the battery piece 110, and is beneficial to maintaining the working efficiency of the battery piece 110.
Considering that different bonding adhesives 130 have different conductive properties, some lower cost bonding adhesives 130, such as the transparent bonding adhesive 130 used in this embodiment, also have non-conductive properties. In order to ensure that the fine grids 111 of the first region 112 can be well electrically connected with the shaping portions 122, the adhesive 130 is optionally provided in a form not contacting with the fine grids 111.
Referring to fig. 6, in the present embodiment, the adhesive 130 is located between two adjacent thin gates 111.
In the above arrangement, the adhesive 130 is provided between two adjacent fine grids 111 without contacting the fine grids 111, and when the adhesive 130 having different conductivity is used, the shaping portion 122 and the fine grids 111 can be electrically connected to each other well.
In the present application, the adhesive 130 is not limited to be provided between two fine grids 111, and for example, when the conductive paste ECA is used as the adhesive, the adhesive 130 may be provided between three or more fine grids 111 in order to improve the adhesion reliability.
It will be appreciated that the adhesive needs to be of a suitable length and width to ensure that the adhesive is good enough to provide a reliable bond between the first region 112 and the shaping portion 122.
Regarding the width of the adhesive 130, as an example, the size of the adhesive 130 in the second predetermined direction b is 0.7-0.8 mm, for example, 0.7mm or 0.8 mm. The width specification is easy to realize through the existing technology of flattening after dispensing; the matching between the width of the adhesive 130 and the width of the shaping part 122 is good, so that the adhesive 130 can be bonded with the shaping part 122 sufficiently, and the shielding of the surface of the battery piece 110 can be effectively controlled.
In consideration of ensuring the electrical performance of the battery string 100, the surface of the battery sheet 110 needs to have a suitable density of the fine grids 111. In the embodiment where the adhesive 130 is disposed between the two fine grids 111, the size of the adhesive 130 in the first predetermined direction a needs to be matched to the distance between the fine grids 111.
Regarding the length of the adhesive 130, as an example, the size of the adhesive 130 in the first predetermined direction a is 1.8 to 2.0mm, for example, 1.9 mm.
In the above-described embodiment, the length of the adhesive 130 in the second predetermined direction b is appropriate, so that the adhesive 130 can be distributed between two adjacent thin grids 111 well, and the adhesive 130 can reliably adhere to the battery piece 110 and the shaping portion 122.
The inventors have studied and found that when the distance between the adhesive 130 and the end of the battery cell 110 is too small, an overflow phenomenon may occur; when the distance between the adhesive 130 and the end of the battery piece 110 is too large, the shaping portion 122 needs to have a large length so as to correspond to the adhesive 130, which may cause the shaping portion 122 to have an excessively large length, and further cause the shielding area of the conductive tape 120 on the surface of the battery piece 110 to be excessively large.
In order to effectively avoid the above problem, in the present application, optionally, in the first predetermined direction a, the distance from the adhesive 130 to the end of the battery piece 110 is 4.2 to 6.6mm, further 4.3 to 6.5mm, and further 4.4 to 6.4 mm.
As an example, the distance between two adjacent thin grids 111 is 1.9-2 mm; the interval between the thin grid 111 at the edge of the cell 110 and the edge of the cell 110 is 0.4-0.6 mm. The number of the fine grids 111 on one side of the adhesive 130 close to the end of the battery piece 110 is 3-4.
In the first preset direction a, the fine grid 111 positioned at the outermost edge of the cell 110 is a first fine grid 111; the middle of the cell 110 is sequentially provided with a second fine grid 111, a third fine grid 111 and a fourth fine grid 111, and so on.
In the present embodiment, in the first predetermined direction a, the distance between two adjacent fine grids 111 is 1.95mm, and the distance between the edges of the battery piece 110 is 0.5 mm. The number of the first thin grids 111 and the thin grids 111 on the side of the adhesive 130 close to the end of the battery piece 110 is 3, and the adhesive 130 is located between the third thin grid 111 and the fourth thin grid 111.
In the above arrangement mode, the bonding glue 130 has a proper distance from the end of the battery piece 110, on one hand, the excessive distance between the bonding glue 130 and the end of the battery piece 110 is effectively avoided, so that the shielding area of the conductive belt 120 on the surface of the battery piece 110 can be effectively controlled; on the other hand, the distance between the adhesive 130 and the end of the battery piece 110 is effectively prevented from being too small, so that the phenomenon of glue overflow can be effectively avoided. In order to ensure that the shaping portion 122 better corresponds to the first region 112 and effectively control the shielding area of the conductive strip 120 on the surface of the battery piece 110, the size of the first shaping portion 1221 is adaptively 6 to 7mm, for example, 6mm, 6.5mm, or 7mm in the first preset direction a; the second shaping part 1222 has a size of 12 to 14mm, for example, 12mm, 13mm, or 14 mm.
Example 2
The present embodiment provides a photovoltaic module 10, which is different from embodiment 1 only in that: the adhesive 130 is a conductive paste ECA.
Example 3
The present embodiment provides a photovoltaic module 10, which is different from embodiment 2 in that:
in the first preset direction a, one side of the adhesive 130 away from the edge of the battery piece 110 exceeds the fourth fine grid 111, and the adhesive 130 is located between the third fine grid 111 and the fifth fine grid 111.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a photovoltaic module, includes the battery cluster, is located the encapsulation glued membrane of battery cluster surface and be located the encapsulation glass on encapsulation glued membrane surface, its characterized in that, the battery cluster includes:
the battery pieces are distributed along a first preset direction; a plurality of fine grids are distributed on the surface of the battery piece at intervals along the first preset direction; the surface of the battery piece comprises a second area and first areas positioned on two sides of the second area, wherein the first areas are areas close to two ends of the battery piece in the first preset direction;
the conductive strips of two adjacent battery pieces are connected in series; the conductive belt is provided with a plurality of conductive belt bodies and a plurality of shaping parts, the conductive belt bodies extend along the first preset direction and are distributed at intervals, the shaping parts correspond to the first area, and the conductive belt bodies are electrically contacted with the fine grids in the second area; in a second preset direction, the size of the shaping part is larger than that of the conductive belt body, and the second preset direction is parallel to the surface of the battery piece and is perpendicular to the first preset direction; and
and an adhesive connected between the first region and the shaping part.
2. The photovoltaic module according to claim 1, wherein the size of the adhesive glue in the first predetermined direction is 1.8-2.0 mm.
3. The photovoltaic module according to claim 1, wherein the distance from the adhesive glue to the end of the cell piece in the first preset direction is 4.2-6.6 mm.
4. The photovoltaic module according to claim 1, wherein in the first preset direction, the distance between two adjacent fine grids is 1.9-2 mm; the number of the fine grids on one side, close to the end part of the battery piece, of the bonding glue is 3-4.
5. The photovoltaic module of claim 1, wherein the adhesive is located between two adjacent thin grids.
6. The photovoltaic module according to any one of claims 1 to 5, wherein the plurality of shaping portions are a first shaping portion located at two ends of the conductive strip body and a second shaping portion located in the middle of the conductive strip body, two ends of the second shaping portion in the first preset direction respectively correspond to the first regions of two adjacent battery pieces, and the first shaping portion and the second shaping portion are connected with the corresponding first regions through the adhesive glue.
7. The photovoltaic module according to claim 6, wherein the first shaping portion has a size of 6-7 mm and the second shaping portion has a size of 12-14 mm in the first predetermined direction.
8. The photovoltaic module according to claim 1, wherein the size of the reshaping portion is 0.5-0.6 mm and the size of the adhesive glue is 0.7-0.8 mm in the second predetermined direction.
9. The photovoltaic module according to claim 1 or 8, wherein two adjacent cells are respectively connected in series by 9-20 conductive strips spaced in the second predetermined direction.
10. The photovoltaic module of claim 1, wherein the adhesive is a transparent adhesive.
CN202121553058.0U 2021-07-08 2021-07-08 Photovoltaic module Active CN214848646U (en)

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CN202121553058.0U CN214848646U (en) 2021-07-08 2021-07-08 Photovoltaic module
PCT/CN2022/081538 WO2023279766A1 (en) 2021-07-08 2022-03-17 Photovoltaic assembly

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WO2023279766A1 (en) * 2021-07-08 2023-01-12 东方日升（常州）新能源有限公司 Photovoltaic assembly

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