CN116759480A

CN116759480A - Solar cell module and cell module

Info

Publication number: CN116759480A
Application number: CN202310978783.XA
Authority: CN
Inventors: 王建文
Original assignee: Guangxi Mubang High Tech New Energy Co ltd; Jiangxi Mubang Hi Tech Co ltd
Current assignee: Guangxi Mubang High Tech New Energy Co ltd; Jiangxi Mubang Hi Tech Co ltd
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2023-09-15

Abstract

The invention discloses a solar cell module and a cell assembly. The battery sheet comprises a plurality of first grid lines and a plurality of second grid lines, the conductive sheet comprises a first electrode wire, a second electrode wire, an electric conduction structure, a first bus wire, a second bus wire and a third bus wire, the first electrode wire is correspondingly and electrically connected with the first grid line, the second electrode wire is correspondingly and electrically connected with the second grid line through the electric conduction structure and corresponds to any grid line region, the first bus wire spans and is electrically connected with the plurality of first electrode wires, the second bus wire spans and is electrically connected with the plurality of second electrode wires, and the first bus wire corresponding to one grid line region and the second bus wire corresponding to the other grid line region are electrically connected through the third bus wire in any two adjacent grid line regionsThe conductive sheet can collect the electric energy generated by the battery sheet to be transmitted to an external circuit, and the battery sheet does not need to be sliced _。

Description

Solar cell module and cell module

Technical Field

The present invention relates to the field of solar cells, and in particular, to a solar cell module and a solar cell module.

Background

As shown in fig. 1, in the related art, the battery sheet 2' is generally sliced, and after half of the battery sheets 2' are turned over, the positive electrode grid line 20' and the negative electrode grid line 21' of the two sliced battery sheets 2' are electrically connected through the lead 3', so as to realize the collection of electric energy generated by the solar cells formed by the battery sheets 2', so as to be capable of being collected and output to an external circuit.

However, when the battery sheet 2 'is sliced, the battery sheet 2' is likely to be broken, and the rejection rate of the battery sheet 2 'increases, resulting in high manufacturing cost of the solar cell module 1'.

Disclosure of Invention

One object of the present invention is to: the solar cell module is capable of converging electric energy generated by the cell to be output to an external circuit, meanwhile, slicing of the cell is not needed, hidden cracking of the cell can be avoided, the yield of the cell is high, and the manufacturing cost of the solar cell module is low.

Another object of the invention is: provided is a battery module, which can output a large voltage and reduce internal resistance loss and manufacturing cost by providing the solar battery module.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, there is provided a solar cell module comprising:

the battery piece comprises a base body, wherein a plurality of grid line areas are sequentially arranged on the base body, first grid lines and second grid lines are sequentially and alternately arranged in the grid line areas, and the first grid lines and the second grid lines in any two adjacent grid line areas are mirror-symmetrical; the method comprises the steps of,

the conductive sheet is stacked in the grid line area and comprises an insulated main body, the main body is provided with a first side and a second side which are opposite, the first side is close to the grid line area, the first side is provided with a first electrode wire which is electrically connected with the first grid line corresponding to any one of the first grid lines, the second side is provided with a second electrode wire corresponding to any one of the second grid lines, and the second electrode wire which is arbitrarily corresponding is electrically connected with the second grid line through an electrical conduction structure;

the conductive sheet further comprises a first bus wire and a second bus wire which are spaced from each other, wherein the first bus wire spans and is electrically connected with the first electrode wires, and the second bus wire spans and is electrically connected with the second electrode wires; in any two adjacent gate line regions, the first bus line corresponding to one gate line region and the second bus line corresponding to the other gate line region are electrically connected through a third bus line.

In a preferred embodiment of the solar cell module, the first bus line is connected to a side of the first electrode line facing the second side.

In a preferred embodiment of the solar cell module, the main body is provided with a first installation groove penetrating in a thickness direction, and the electrical conduction structure is at least partially provided in the first installation groove.

As a preferred technical scheme of the solar cell module, the electrical conduction structure comprises a plurality of conductive particles and first conductive glue, wherein the conductive particles are bonded and electrically conducted through the first conductive glue, the conductive particles are bonded to the wall of the first setting groove through the first conductive glue, and the first conductive glue has elasticity.

In a preferred embodiment of the solar cell module, the main body has a first surface located on the first side, the first electrode wire protrudes at least partially from the first surface, and the protruding height of the first electrode wire protruding from the first surface is h1;

the electric conduction structure is provided with a connecting end electrically connected with the second grid line, the connecting end protrudes out of the first surface, and the protruding height of the connecting end protruding out of the first surface is h2;

h2 =h1, or, h2 > h1, and the electrically conductive structure has elasticity.

In a preferred embodiment of the solar cell module, the first side of the main body is provided with a first accommodating groove, the first bus wire is at least partially disposed in the first accommodating groove, and the first bus wire is connected to a side of the first electrode wire facing the second side; and/or the number of the groups of groups,

the second bus wire is connected to one side of the second electrode wire, which is away from the first side, or the second side of the main body is provided with a second setting groove, at least part of the second bus wire is arranged in the second setting groove, and the second bus wire is connected to one side of the second electrode wire, which is towards the first side.

As a preferred embodiment of the solar cell module, the first bus line is electrically connected between two ends of the corresponding plurality of first electrode lines, and the second bus line is electrically connected between two ends of the corresponding plurality of second electrode lines.

In a preferred embodiment of the solar cell module, the first bus wires are electrically connected to middle portions of the plurality of first electrode wires in the length direction in sequence; and/or the number of the groups of groups,

the second bus wires are electrically connected to the middle parts of the plurality of second electrode wires in the length direction in sequence.

In a preferred embodiment of the solar cell module, the main body is further provided with a third arrangement groove extending in the thickness direction, and the third bus line is at least partially arranged in the third arrangement groove; and/or,

the first electrode lead is electrically connected with the corresponding first grid line through second conductive adhesive and is adhered, and the electrical conduction structure is electrically connected with the corresponding second grid line through third conductive adhesive and is adhered.

In a second aspect, a battery assembly is provided, including a first packaging layer, a second packaging layer, a first packaging plate, a second packaging plate and the solar cell module according to the first aspect, where the first packaging layer covers a side of the substrate facing away from the conductive sheet, the first packaging plate is stacked on a side of the first packaging layer facing away from the substrate, the second packaging layer covers a side of the conductive sheet facing away from the battery sheet, and the second packaging plate is stacked on a side of the second packaging layer facing away from the conductive sheet.

The beneficial effects of the invention are as follows:

the first bus wires are crossed and electrically connected with the first electrode wires, so that the first bus wires are crossed and electrically connected with the first grid wires in the corresponding grid wire areas, the second bus wires are crossed and electrically connected with the second electrode wires, so that the second bus wires are crossed and electrically connected with the second grid wires in the corresponding grid wire areas, the first bus wires and the adjacent second bus wires are electrically connected with each other through the third bus wires in the sequential arrangement direction of the grid wire areas, the first bus wires, the third bus wires and the second bus wires are sequentially connected to form conductive parts, the conductive parts are of a structure crossing the two adjacent grid wire areas, in other words, the solar cells in the two adjacent grid wire areas can be connected in series, in other words, the electric energy generated by the solar cells in the two adjacent grid wire areas can be bus through the conductive parts, the electric energy generated by the battery cells can be output to an external circuit through the conductive sheet bus, and meanwhile, the solar cells can be cut off in a high-cost manner, and the solar cells can be prevented from being cut into solar cells.

Drawings

The invention is described in further detail below with reference to the drawings and examples.

Fig. 1 is a schematic view of a manufacturing process of a solar cell module according to the prior art.

Fig. 2 is a schematic bottom view of a solar cell module according to an embodiment.

Fig. 3 is a cross-sectional view taken along A-A in fig. 2.

Fig. 4 is a sectional view taken along the direction B-B in fig. 2.

Fig. 5 is a schematic bottom view of a battery plate according to an embodiment.

Fig. 6 is a schematic top view of a conductive sheet according to an embodiment.

Fig. 7 is a schematic perspective view of a conductive sheet according to an embodiment.

Fig. 8 is a schematic sectional view of a part of the structure of the conductive sheet (the first electrode lead and the electrical conducting structure are both protruding from the first surface) according to the embodiment.

Fig. 9 is a schematic cross-sectional view of a structure of a battery assembly according to an embodiment.

In fig. 1:

1', a solar cell module;

2', battery pieces; 20', positive gate line; 21', negative gate lines;

3', a wire;

fig. 2 to 9:

1. a solar cell module;

2. a battery sheet; 20. a base; 200. a gate line region; 21. a first gate line; 22. a second gate line;

3. a conductive sheet; 30. a main body; 30a, a first side; 30b, a second side; 30c, a third side; 30d, fourth side; 300. a first setting groove; 301. a first surface; 302. a second surface; 303. a second setting groove; 304. a third setting groove; 31. a first electrode lead; 310. a first middle portion; 311. a second accommodation groove; 32. a second electrode lead; 320. a second middle portion; 33. an electrical conducting structure; 330. a connection end; 34. a first bus wire; 340. a first accommodation groove; 35. a second bus wire; 36. a third bus wire; 3a, a conductive part;

4. a battery assembly; 40. a first encapsulation layer; 41. a second encapsulation layer; 42. a first package plate; 43. and a second package plate.

Detailed Description

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

As shown in fig. 2 to 5, a first aspect of the present invention provides a solar cell module 1 including a cell sheet 2 and a conductive sheet 3. The battery sheet 2 comprises a substrate 20, a plurality of grid lines 200 are sequentially arranged on the substrate 20, a first grid line 21 and a second grid line 22 are sequentially and alternately arranged in each grid line region 200 along the arrangement direction S1 of the grid lines 200, the first grid line 21 and the second grid line 22 in any two adjacent grid line regions 200 are in mirror symmetry, one of the first grid line 21 and the second grid line 22 is an anode grid line, the other is a cathode grid line, a conductive sheet 3 is overlapped in the grid line region 200, the conductive sheet 3 comprises an insulated main body 30, a plurality of first electrode wires 31, a plurality of second electrode wires 32, a plurality of electric conduction structures 33, a plurality of first bus wires 34, a plurality of second bus wires 35 and a third bus wire 36, the main body 30 has opposite first sides 30a (see FIG. 7) and second sides 30b (see FIG. 7) along the thickness direction S2 of the main body 30, the first side 30a is close to the first grid line 21 and the second grid line 22, the plurality of first electrode wires 31 are respectively arranged on the first side 30a corresponding to the plurality of first grid lines 21, the first electrode wires 31 are electrically connected to the corresponding first grid lines 21, the plurality of second electrode wires 32 are respectively arranged on the second side 30b corresponding to the plurality of second grid lines 22, the plurality of electric conduction structures 33 are arranged on the main body 30 in an array manner, any corresponding second electrode wires 32 and the second grid lines 22 are electrically conducted through the electric conduction structures 33, corresponding to any grid line region 200, the conductive sheet 3 further comprises first bus wires 34 and second bus wires 35 which are spaced apart, the first bus wires 34 cross and are electrically connected to the plurality of first electrode wires 31, the second bus wires 35 cross and are electrically connected to the plurality of second electrode wires 32, at any two adjacent grid line regions 200, the first bus line 34 corresponding to one gate line region 200 is electrically connected to the second bus line 35 corresponding to the other gate line region 200 through the third bus line 36. In order to facilitate the observation of an example of the array arrangement of the electrically conductive structures 33, the electrically conductive structures 33 blocked by the first electrode wires 31 are shown in dashed lines in fig. 2, while the first gate wires 21 are filled with intermittent linear patterns and the second gate wires 22 are filled with lattice-like linear patterns in fig. 5 in order to facilitate the distinction between the first gate wires 21 and the second gate wires 22.

It can be understood that the battery 2 is a back contact solar battery, that is, the battery 2 contacts the conductive sheet 3 through the back surface provided with the first grid line 21 and the second grid line 22, so that the conductive sheet 3 is conducted with the battery 2, and the conductive sheet 3 is used to collect the electric energy generated in the battery 2 to an external circuit, and the grid line area 200 is a three-dimensional area located at one side of the substrate 20, so that the first grid line 21 and the second grid line 22 are integrally located in the grid line area 200.

By connecting the first bus line 34 across and electrically to the plurality of first electrode lines 31 so that the first bus line 34 across and electrically connects to the plurality of first electrode lines 21 in the corresponding gate line region 200, and connecting the second bus line 35 across and electrically connects to the plurality of second electrode lines 32 in the corresponding gate line region 200, the second bus line 35 across and electrically connects to the plurality of second gate lines 22 in the corresponding gate line region 200, and then connecting the first bus line 34 and the adjacent second bus line 35 electrically through the third bus line 36 in the arrangement direction S1, solar cells located in the adjacent two gate line regions 200 can be connected in series, in other words, the electric energy generated by the solar cells in the adjacent two gate line regions 200 can be connected electrically in sequence through the first bus line 34, the third bus line 36 and the second bus line 35, so that the electric energy generated by the solar cells 2 can be output to the external circuit through the bus bar 3, and simultaneously, the total output voltage of the solar cell module 1 can also be raised, and the solar cell module 1 can be manufactured without the solar cell module 2 can be manufactured in parallel, and the solar cell module 2 can be manufactured at a high cost, and the solar cell module 2 can be prevented from having a low cost.

Alternatively, the solar cell module 1 may further include a conductive portion 3a, and the conductive portion 3a includes a first bus line 34, a third bus line 36, and a second bus line 35 connected in sequence, in other words, the conductive portion 3a may be an integral structure crossing the adjacent two grid line regions 200 to realize the bus of the electric energy generated by the solar cells in the adjacent two grid line regions 200 through the conductive portion 3 a.

In order to make the output voltage of the solar cell module larger and reduce the resistance loss inside the solar cell module, in the related art, a plurality of series battery packs formed by connecting part of positive grid lines and part of negative grid lines in series in the sliced battery piece are also generally connected in parallel so as to reduce the resistance loss inside the solar cell module.

By making the first bus wire 34 cross and electrically connected to the plurality of first electrode wires 31 so that the first bus wire 34 crosses and electrically connects the plurality of first bus wires 21 in the corresponding gate line region 200, which is equivalent to making the plurality of first gate wires 21 corresponding to the same gate line region 200 parallel and electrically connect the first bus wire 34, and making the second bus wire 35 cross and electrically connect the plurality of second electrode wires 32 so that the second bus wire 35 cross and electrically connect the plurality of second gate wires 22 in the corresponding gate line region 200 parallel and electrically connect the plurality of second gate wires 22 corresponding to the same gate line region 200 to the second bus wire 35, the internal resistance of the solar cell module 1 provided by the present embodiment can be reduced, so that the resistance loss inside the solar cell module 1 can be reduced.

In addition, by making the first gate line 21 and the second gate line 22 in any adjacent two gate line regions 200 mirror-symmetrical, two adjacent first gate lines 21 or two adjacent second gate lines 22 can be provided in the adjacent positions of any adjacent two gate line regions 200, in other words, two gate lines of the same polarity are arranged in the adjacent positions of any adjacent two gate line regions 200, so that direct current generation between the gate lines of adjacent two gate line regions 200 can be avoided, and when solar cells located in adjacent two gate line regions 200 are connected in series through the first bus line 34 and the second bus line 35, short circuit at the positions between the adjacent two gate line regions 200 can be avoided.

In order to simplify the bus circuit of the solar cell module, alternatively, the first bus wire 34 may be electrically connected to only the second bus wire 35 located at one side through the third bus wire 36, for example, the body 30 may have the opposite third and fourth sides 30c and 30d in the arrangement direction S1 of the plurality of first electrode wires 31, and the first bus wire 34 near the third side 30c and the second bus wire 35 near the fourth side 30d may be electrically connected through the third bus wire 36 among the two first bus wires 34 and the two second bus wires 35 arbitrarily corresponding to the adjacent two gate line regions 200.

It will be appreciated that one second bus line 35 closest to the third side 30c and one first bus line 34 closest to the fourth side 30d are used for electrical connection to an external circuit for delivering electrical energy generated by the solar cell module 1 to the external circuit. At this time, alternatively, one of the first bus wires 34 closest to the fourth side 30d may extend to protrude from the main body 30 in a direction away from the third side 30c, and one of the second bus wires 35 closest to the third side 30c may extend to protrude from the main body 30 in a direction away from the fourth side 30d, so that the one of the first bus wires 34 and the one of the second bus wires 35 are electrically connected to an external circuit.

Optionally, any adjacent grid lines may be directly connected, or may be arranged at intervals, and gaps between the adjacent grid lines may be filled with a silicon material, so that the adjacent grid lines can be electrically conductive, and meanwhile, the silicon material itself can generate current under the action of illumination, so that the power generation efficiency of the battery piece 2 is not affected.

Wherein, "any adjacent gate line" includes: any adjacent first gate line 21 and second gate line 22, any adjacent two first gate lines 21, and any adjacent two second gate lines 22.

Alternatively, at the side surface of the substrate 20 facing the conductive sheet 3 where the first and second grid lines 21 and 22 are not provided, a silicon material (not numbered in the drawing) may be covered to increase the effective solar power generation area of the battery sheet 2, so that the power generation efficiency of the battery sheet 2 is higher.

Alternatively, the body 30 may be a sheet-shaped insulating material having a certain structural strength, such as a PET (polyethylene terephthalate) sheet, a PP (Polypropylene) sheet, or the like, so as to provide the first electrode lead 31, the second electrode lead 32, the electrical conduction structure 33, the first bus lead 34, and the second bus lead 35 at the body 30 and to integrally stack the conductive sheet 3 to the battery sheet 2.

The first bus wire 34 may be electrically connected to the ends of the corresponding plurality of first electrode wires 31, or may be electrically connected between the ends of the corresponding plurality of first electrode wires 31, and the second bus wire 35 may be electrically connected to the ends of the plurality of second electrode wires 32, or may be electrically connected between the ends of the plurality of second electrode wires 32.

Alternatively, the first bus wires 34 cross and are electrically connected between the two ends of the corresponding plurality of first electrode wires 31, such that the first bus wires 34 cross and are electrically connected between the two ends of the plurality of first grid wires 21 in the corresponding grid region 200, which is equivalent to connecting the two ends of the first grid wires 21 in parallel and electrically connected to the first bus wires 34, in other words, to dividing the plurality of first grid wires 21 corresponding to the same grid region 200 into two sections, and connecting the two sections of each first grid wire 21 in parallel through the first bus wires 34, thereby further reducing the internal resistance of the solar cell module 1 and further reducing the resistance loss inside the solar cell module 1.

Alternatively, the second bus wires 35 are crossed and electrically connected between the two ends of the plurality of second electrode wires 32 such that the second bus wires 35 are crossed and electrically connected between the two ends of the plurality of second grid wires 22 in the corresponding grid wire region 200, which is equivalent to dividing the plurality of second grid wires 22 corresponding to the same grid wire region 200 into two sections, and connecting the two sections of each second grid wire 22 in parallel through the second bus wires 35, thereby further reducing the internal resistance of the solar cell module 1 to further reduce the resistance loss inside the solar cell module 1.

Preferably, the first bus wire 34 may be crossed and electrically connected between both ends of the corresponding plurality of first electrode wires 31 while the second bus wire 35 is crossed and electrically connected between both ends of the plurality of second electrode wires 32, so that the internal resistance of the solar cell module 1 can be more reduced, and thus the resistance loss inside the solar cell module 1 can be more reduced.

As can be understood from the description of fig. 6 and 7, when the first gate line 21 is divided into two sections and the two sections of each first gate line 21 are connected in parallel through the first bus line 34, the internal resistance reducing effect of the circuit formed by equally dividing the first gate line 21 into two sections with the same length and connected in parallel is better than the circuit formed by equally dividing the first gate line 21 into two sections with different lengths and connected in parallel, and the middle part of the first gate line 21 corresponds to the middle part of the first electrode line 31 because the first gate line 21 corresponds to the first electrode line 31. Based on this, it is preferable that the first electrode lead 31 has a middle portion in the length direction thereof (i.e., a first middle portion 310 as shown in fig. 6 and 7), and the first bus lead 34 is electrically connected to the first middle portions 310 of the plurality of first electrode leads 31 in sequence, so that the first bus lead 34 can be electrically connected to the first middle portions 310 of the first electrode leads 31 and to the middle portions of the first grid lines 21, thereby making the circuit of the solar cell module 1 equivalent to dividing the plurality of first grid lines 21 corresponding to the same grid line region 200 into two sections of substantially equal length, and connecting the two sections of substantially equal length of each first grid line 21 in parallel by the first bus lead 34, so that the internal resistance reducing effect of the solar cell module 1 is better.

It will be appreciated that when the second gate lines 22 are divided into two sections and the two sections of each second gate line 22 are connected in parallel by the second bus wires 35, the internal resistance reduction effect of the circuit formed by equally dividing the second gate lines 22 into two sections of the same length and connecting in parallel is better than that of the circuit formed by equally dividing the second gate lines 22 into two sections of different lengths and connecting in parallel, and, since the second gate lines 22 correspond to the second electrode wires 32, the middle portions of the second gate lines 22 correspond to the middle portions of the second electrode wires 32. Based on this, it is preferable that the second electrode lead 32 has a middle portion in the length direction thereof (i.e., a second middle portion 320 as shown in fig. 7), and the second bus lead 35 is electrically connected to the second middle portions 320 of the plurality of second electrode leads 32 in sequence, so that the second bus lead 35 can be electrically conducted to the second middle portion 320 of the second electrode lead 32 and to the middle portion of the second grid line 22, thereby making the circuit of the solar cell module 1 equivalent to dividing the plurality of second grid lines 22 corresponding to the same grid line region 200 into two sections of substantially equal length, and connecting the two sections of substantially equal length of each second grid line 22 in parallel by the second bus lead 35, so that the internal resistance reduction effect of the solar cell module 1 is better. In fig. 7, the blocked second electrode lead 32 is shown in a broken line, the blocked second bus lead 35 is shown in a thickened broken line, and the first bus lead 34 is shown in a thickened solid line for the sake of convenience of observation, and the main body 30 is also made larger in size in the thickness direction S2 to reduce the case where the first bus lead 34, the electrically conductive structure 33, the second electrode lead 32, and the second bus lead 35 are blocked, and the actual conductive sheet 3 may be smaller in size in the thickness direction S2.

More preferably, the first bus wires 34 may be sequentially electrically connected to the first middle portions 310 of the plurality of first electrode wires 31, and the second bus wires 35 may be sequentially electrically connected to the second middle portions 320 of the plurality of second electrode wires 32, thereby further improving the internal resistance reducing effect of the solar cell module 1.

As shown in fig. 3, 4 and 7, the first bus wire 34 is optionally connected to a side of the first electrode wire 31 facing the second side 30b, so that the first bus wire 34 can be prevented from directly contacting the battery 2, so as to avoid the first bus wire 34 from directly contacting the second grid wire 22 to cause short circuit of the battery 2.

For example, the main body 30 has a first surface 301 located on the first side 30a, a first accommodating groove 340 may be formed in the first surface 301, and the first bus wire 34 is at least partially disposed in the first accommodating groove 340, and then the first bus wire 34 is disposed on a side of the first bus wire 34 facing the battery piece 2, so as to connect the first bus wire 34 to a side of the first electrode wire 31 facing the second side 30 b.

Specifically, the first bus wire 34 may be clamped to the first receiving groove 340, or may be adhered to a groove wall of the first receiving groove 340.

Optionally, the first bus wires 34 are entirely located in the first accommodating groove 340, in other words, the first bus wires 34 do not protrude from the first surface 301, so that the first bus wires 34 can be prevented from directly contacting the battery piece 2, and the short circuit of the battery piece 2 caused by the direct contact of the first bus wires 34 with the second grid wires 22 can be avoided.

Alternatively, the first electrode wire 31 may be disposed on the first surface 301 and the first bus wire 34 corresponding to the first gate line 21, so that the manner of disposing the first electrode wire 31 is simple.

In other embodiments, a second accommodating groove 311 communicating with the first accommodating groove 340 may be formed on the first surface 301, and the first electrode wire 31 may be at least partially disposed in the second accommodating groove 311, so that the first electrode wire 31 is electrically connected to the first bus wire 34.

Alternatively, the main body 30 is provided with a first disposition groove 300 penetrating in the thickness direction S2, and the electrical conduction structure 33 is at least partially disposed in the first disposition groove 300, so that the electrical conduction structure 33 can be electrically connected between the second gate line 22 located at the first side 30a and the second bus line 35 located at the second side 30 b.

Alternatively, the number of the electrically conductive structures 33 electrically connected between the pair of corresponding second electrode leads 32 and the second gate line 22 is plural, so that the overcurrent area between the corresponding second electrode leads 32 and the second gate line 22 can be increased by increasing the number of the electrically conductive structures 33, thereby reducing the resistance loss between the corresponding second electrode leads 32 and the second gate line 22.

Optionally, the electrically conductive structure 33 includes a plurality of conductive particles (not shown) and a first conductive paste (not shown), the plurality of conductive particles are bonded and electrically connected by the first conductive paste, and the plurality of conductive particles are bonded to the wall of the first setting groove 300 by the first conductive paste, so that the electrically conductive structure 33 has good electrical conductivity and the electrically conductive structure 33 has good connection stability with the main body 30.

As shown in fig. 8, alternatively, the first electrode wire 31 protrudes at least partially from the first surface 301, so that when the conductive sheet 3 is stacked on the battery sheet 2, the first electrode wire 31 is easily abutted against the first grid line 21, so that the first electrode wire 31 can be electrically connected to the first grid line 21.

At this time, in order to enable the electrical conduction structure 33 to easily abut against the second gate line 22 so that the electrical conduction structure 33 can be electrically connected to the second gate line 22, the electrical conduction structure 33 may have a connection end 330 electrically connected to the second gate line 22, and the connection end 330 protrudes from the first surface 301.

The protruding height of the first electrode wire 31 protruding from the first surface 301 is h1, and the protruding height of the connecting end 330 protruding from the first surface 301 is h2, where the unit of the height h1 and the unit of the height h2 are the same, and optionally, h2=h1, in other words, the connecting end 330 is flush with a side of the first electrode wire 31 facing away from the first surface 301, so that the connecting end 330 and the first electrode are easily abutted against the surface of the battery plate 2 at the same time, and the connecting end 330 is easily electrically connected to the second grid line 22, and meanwhile, the first electrode wire 31 is electrically connected to the first grid line 21.

Alternatively, h2 > h1, and the electrically conductive structure 33 has elasticity, so that the electrically conductive structure 33 is abutted against the second grid line 22 and elastically deformed by abutting the conductive sheet 3 against the battery sheet 2, so that the first electrode wire 31 is abutted against the first grid line 21 at the same time, at this time, the requirement on the accuracy of the protruding height of the electrically conductive structure 33 protruding from the first surface 301 is low, and the manufacturing difficulty of the conductive sheet 3 can be reduced.

As in the previous embodiments, when the electrically conductive structure 33 includes a plurality of conductive particles and the first conductive paste, the first conductive paste is optionally elastic, so that the electrically conductive structure 33 can be made elastic.

Optionally, the first electrode wires 31 are electrically connected to and adhered to the corresponding first grid wires 21 through a second conductive adhesive (not shown in the figure), and the electrically conductive structures 33 are electrically connected to and adhered to the corresponding second grid wires 22 through a third conductive adhesive (not shown in the figure), so that the relative positions of the first electrode wires 31 and the corresponding first grid wires 21, and the electrically conductive structures 33 and the corresponding second grid wires 22 are more stable while the electrical connection of the first electrode wires 31 and the corresponding first grid wires 21 and the electrically conductive structures 33 and the corresponding second grid wires 22 are not affected, and the service stability of the solar cell is improved.

Further, the third conductive adhesive is spaced from the second conductive adhesive, so that the situation that the adjacent first gate line 21 and second gate line 22 are electrically conducted with the second conductive adhesive through the third conductive adhesive, and short circuit is caused can be avoided.

As shown in fig. 3, 4 and 7, optionally, the second side 30b of the main body 30 is provided with a second setting groove 303, and the second bus wire 35 is at least partially disposed in the second setting groove 303, so that the effective connection area between the second bus wire 35 and the main body 30 is larger, and the connection stability between the second bus wire 35 and the main body 30 can be better.

Specifically, the second bus wires 35 may be clamped to the second disposition groove 303, or may be adhered to a groove wall of the second disposition groove 303.

In other embodiments, the second bus wires 35 may be further disposed on the second surface 302, so that the second surface 302 does not need to be provided with the second disposition groove 303, and the manufacturing process of the conductive sheet 3 can be simplified.

As shown in fig. 8, the second bus wire 35 is optionally connected to a side of the second electrode wire 32 facing the first side 30a (as shown in fig. 3), or the second bus wire 35 is connected to a side of the second electrode wire 32 facing away from the first side 30a (as shown in fig. 8).

Optionally, the main body 30 is further provided with a third arrangement groove 304 extending in the thickness direction S2, and the third bus wire 36 is at least partially arranged in the third arrangement groove 304, wherein the structure of the blocked third bus wire 36 is shown in fig. 7 with a thickened broken line for the sake of easy observation.

Alternatively, the first bus wire 34, the third bus wire 36, and the second bus wire 35 electrically connected in sequence may be formed as one body, in other words, the conductive portion 3a may be an undetachable structure, for example, the first bus wire 34, the third bus wire 36, and the second bus wire 35 may be three sequentially connected portions of one wire, at which time the conductive portion 3a is one wire, or the first bus wire 34, the third bus wire 36, and the second bus wire 35 may be fixedly connected by welding, bonding, or the like to form one body.

As shown in fig. 9, the second aspect of the present invention provides a battery assembly 4, which includes a first packaging layer 40, a second packaging layer 41, a first packaging board 42, a second packaging board 43, and the solar cell module 1 provided in the foregoing technical solution, where the first packaging layer 40 covers a side of the substrate 20 (please refer to fig. 3) facing away from the conductive sheet 3, the first packaging board 42 is stacked on a side of the first packaging layer 40 facing away from the substrate 20, the second packaging layer 41 covers a side of the conductive sheet 3 facing away from the battery sheet 2, and the second packaging board 43 is stacked on a side of the second packaging layer 41 facing away from the conductive sheet 3.

In addition, by sandwiching the first package plate 42 and the second package plate 43 between the opposite sides of the solar cell module 1, the structural strength of the entire cell module 4 can be improved, the solar cell module 1 can be protected, and the possibility of damage to the solar cell module 1 due to collision can be reduced.

Alternatively, the first encapsulation layer 40 may be formed by encapsulation glue curing, so that the first encapsulation layer 40 can both perform an encapsulation function on the side of the base body 20 facing away from the conductive sheet 3 and adhere the first encapsulation plate 42 to the base body 20.

Preferably, the first packaging layer 40 and the first packaging plate 42 are made of transparent materials, so that loss of light passing through the first packaging layer 40 and the first packaging plate 42 can be reduced, and power generation efficiency of the battery piece 2 can be improved.

Alternatively, the second encapsulation layer 41 may be formed by encapsulation glue curing, so that the second encapsulation layer 41 can both perform an encapsulation effect on the side of the conductive sheet 3 facing away from the battery sheet 2 and adhere the second encapsulation plate 43 to the conductive sheet 3.

In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the operation, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

In the description herein, reference to the term "one embodiment," "an example," etc., means 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 invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims

1. A solar cell module, comprising:

2. The solar cell module of claim 1, wherein the first bus wire is connected to a side of the first electrode wire that faces the second side.

3. The solar cell module according to claim 1, wherein the main body is provided with a first arrangement groove penetrating in a thickness direction, and the electrical conduction structure is at least partially provided in the first arrangement groove.

4. The solar cell module according to claim 3, wherein the electrically conductive structure includes a plurality of conductive particles and a first conductive paste, the plurality of conductive particles are bonded and electrically conductive by the first conductive paste, and the plurality of conductive particles are bonded to a wall of the first set groove by the first conductive paste, the first conductive paste having elasticity.

5. The solar cell module of claim 1, wherein the body has a first surface on the first side, the first electrode lead protrudes at least partially from the first surface, and the protruding height of the first electrode lead protruding from the first surface is h1;

h2 =h1, or, h2 > h1, and the electrically conductive structure has elasticity.

6. The solar cell module of claim 1, wherein the first side of the body is provided with a first receiving groove, the first bus wire is at least partially disposed in the first receiving groove, and the first bus wire is connected to a side of the first electrode wire facing the second side; and/or the number of the groups of groups,

7. The solar cell module of any one of claims 1-6, wherein the first bus wire is electrically connected between ends of a corresponding plurality of the first electrode wires, and the second bus wire is electrically connected between ends of a corresponding plurality of the second electrode wires.

8. The solar cell module according to claim 7, wherein the first bus wire is electrically connected to a central portion of the plurality of first electrode wires in the length direction in sequence; and/or the number of the groups of groups,

9. The solar cell module according to any one of claims 1 to 6, wherein the main body is further provided with a third arrangement groove extending in the thickness direction, and the third bus wire is at least partially arranged in the third arrangement groove; and/or,

10. A battery assembly, comprising a first packaging layer, a second packaging layer, a first packaging plate, a second packaging plate and a solar cell module according to any one of claims 1-9, wherein the first packaging layer covers one side of the substrate, which is away from the conductive sheet, the first packaging plate is stacked on one side of the first packaging layer, which is away from the substrate, the second packaging layer covers one side of the conductive sheet, which is away from the battery sheet, and the second packaging plate is stacked on one side of the second packaging layer, which is away from the conductive sheet.