WO2023050997A1 - Full-serial/parallel shingled photovoltaic module and production method therefor - Google Patents

Abstract

The present application discloses a full-serial/parallel shingled photovoltaic module and a production method therefor. The full-serial/parallel shingled photovoltaic module comprises multiple rows of first battery cell groups and multiple rows of second battery cell groups; the multiple rows of first battery cell groups and the multiple rows of second battery cell groups are distributed staggered along the column direction; each row of first battery cell groups does not align in the row direction with any adjacent row of second battery cell groups; any first battery cell or second battery cell in each row of first cell groups or second battery cell groups is in parallel connection and in series connection with two adjacent second battery cell groups or first battery cell groups in any adjacent row; the first battery cell of the first battery cell groups and the second battery cell of the second battery cell groups have an upper edge electrode and a lower edge electrode; a conductive adhesive film adheres to the upper edge electrode or/and the lower edge electrode of the first battery cell and the second battery cell. In the full-serial/parallel shingled photovoltaic module provided in the present application, a conductive adhesive film is used to bond a battery cell, which can enhance the tension between battery cells in parallel connection, thereby having the advantage of high connection strength between battery cells.

Description

A full series parallel shingled photovoltaic module and its production method

This application claims the priority of the Chinese patent application submitted to the China Patent Office on September 28, 2021, with the application number 202111141645.3, and the title of the invention is "Method for connecting cells with zigzag grid lines and production process for full series parallel photovoltaic modules" rights, and claim the priority of the Chinese patent application submitted to the China Patent Office on July 5, 2022, with the application number 202210783694.5, and the title of the invention "a full string parallel shingled photovoltaic module and its production method". All of the above applications The contents are incorporated by reference in this application.

technical field

The present application relates to the technical field of photovoltaic processing, in particular to a full series parallel shingled photovoltaic module and a production method thereof.

Background technique

Shingled cells increase the contact area of the upper and lower cell contact grid lines to reduce the battery resistance, making the upper and lower contact grid lines into a zigzag shape, so that the grid lines present a zigzag bite, which can save silver paste and reduce connection resistance, but the zigzag grid The width and height of the line are both in the micron level, and the connection between the fine sawtooth has become a difficulty in this technology. If conductive adhesive is used, the conductive adhesive is affected by its own gravity and cannot be evenly applied on the uneven surface. .

On the other hand, the full series parallel shingled module realizes the parallel connection of each row of cells and the series connection of each column of cells by interlacing each row of cells. In order to increase the effective area of photovoltaic modules, the staggering between cells is very small, resulting in extremely low pulling force at the parallel point and high resistance. The improvement of the pulling force at the parallel point of cells is the key to improving the efficiency of full-series parallel shingled modules.

Contents of the invention

The present application aims to solve one of the above-mentioned technical problems in the related background art at least to a certain extent.

For this reason, the embodiment of the application proposes a full series parallel shingled photovoltaic module and its production method. The production method of the full series parallel photovoltaic module has the advantages of simplifying the cell gluing process and improving the cell gluing efficiency.

The embodiment of the present application also proposes a full series parallel shingled photovoltaic module, which has the advantages of anti-shading, good crack resistance, high power generation efficiency, and high connection strength between cells.

According to the full series parallel shingled photovoltaic module of the embodiment of the present application, the full series parallel shingled photovoltaic module includes multiple rows of first cell groups and multiple rows of second cell groups, and multiple rows of the first cell group and multiple rows The second battery sheet groups are arranged alternately in the column direction, each row of the first battery sheet group is misaligned with any adjacent row of the second battery sheet group in the row direction, and each row of the first battery sheet group Or any one of the first battery slices or the second battery slices in the second battery slice group is connected in parallel and connected in series with two adjacent second battery slices or the first battery slices in any adjacent row , the first battery slice of the first battery slice group and the second battery slice of the second battery slice group both have an upper edge electrode and a lower edge electrode, and the first battery slice and the second battery slice A conductive adhesive film is pasted on the upper electrode or/and the lower electrode, and the upper electrode or lower electrode of each row of the first cell group passes through the conductive adhesive film and the second cell group of each row. The lower edge electrodes or the upper edge electrodes are connected.

In some embodiments, the stagger distance between the first battery sheet group and the second battery sheet group is: 0-50 mm.

In some embodiments, the conductive adhesive film has multiple layers, and the multiple layers of the conductive adhesive film are laminated and pasted on the upper edge electrodes or/or of a row of the first battery sheet group or the second battery sheet group and the lower edge electrode.

In some embodiments, the conductive adhesive film is pasted on the upper electrode or/and the lower electrode of a row of the first battery sheet group or the second battery sheet group, and the length of the conductive adhesive film is the same as The sum of the lengths of the upper electrodes or/and the lower electrodes of a row of the first battery sheet group or the second battery sheet group is equal.

In some embodiments, the conductive adhesive film is divided into multiple sections and pasted on the upper electrode or/and the lower electrode of a row of the first battery sheet group or the second battery sheet group.

In some embodiments, the upper electrode and the lower electrode are sawtooth electrodes.

In some embodiments, the first battery sheet and the second battery sheet are obtained by cutting a whole battery sheet with equally divided electrodes.

In some embodiments, the gap between the first battery slices of the first battery slice group and the gap between the second battery slices of the second battery slice group range from 0 to 20 mm.

In some embodiments, the gaps between the first battery slices of the first battery slice group and the gaps between the second battery slices of the second battery slice group are connected by a conductive adhesive film.

According to the embodiment of the present application, the production method of a full series parallel photovoltaic module includes the following steps: using a film sticking machine to stick a conductive adhesive film on the sawtooth surface of the first electrode and/or the second electrode of the battery sheet, and transfer the battery sheet to the heating The stage is used to laminate two battery slices so that the first electrode of one battery slice is engaged with the second electrode of the other battery slice, and the overlapping place of the two battery slices is heated by the heating assembly.

According to the production method of the full series-parallel photovoltaic module of the embodiment of the present application, by pasting the conductive adhesive film with a uniform thickness on the sawtooth surface of the first electrode and/or the second electrode, the first electrode and the second electrode on two adjacent battery sheets After the two electrodes are occluded, the conductive adhesive film can be melted under the heating of the heating component to realize the lamination and connection of two adjacent battery sheets. Therefore, the connection between two adjacent cells is stable and the connection efficiency is high.

In some embodiments, both the first motor and the second motor of the battery sheet are sawtooth electrodes.

In some embodiments, the method for producing a full series-parallel photovoltaic module further includes transferring the cells to the heating table, and transferring the film-attached cells to the buffer table.

In some embodiments, the first electrode is arranged on the top surface of the battery sheet, the second electrode is arranged on the bottom surface of the battery sheet, and the conductive adhesive film is made of hot-melt conductive silver glue , the conductive adhesive film is pasted on the sawtooth surface of the second electrode.

In some embodiments, the film laminating machine includes a limit mechanism, an adhesive film roller and a positioner, the limit mechanism constitutes an adhesive film groove for the second electrode to cooperate with, and the adhesive film roller is used to The adhesive film moves to the notch of the adhesive film groove, and the positioner is arranged above the adhesive film groove and is used for pressing the conductive adhesive film onto the serrated surface of the second electrode.

In some embodiments, the film laminating machine further includes a first driving mechanism, which is connected to the positioner and used to drive the positioner to approach and move away from the limiting mechanism.

In some embodiments, the heating assembly includes an infrared heating lamp, and the infrared heating lamp is disposed above the heating table.

In some embodiments, the infrared heating lamp is used to form a strip-shaped heating area on the heating table, and the heating area covers the lamination of two adjacent battery sheets.

In some embodiments, the width of the heating zone is smaller than the width of the battery sheet and larger than the thickness of the first electrode.

In some embodiments, the heating assembly further includes a second driving mechanism connected to the infrared heating lamp and used to drive the infrared heating lamp to move along the width direction of the battery sheet.

In some embodiments, according to the position of the locator, the infrared heating lamp is driven by the second driving mechanism to move in jumps to the intersection of the battery slices.

According to the production method of the full series parallel photovoltaic module of the embodiment of the present application, the production method of the full series parallel photovoltaic module includes the following steps: arranging a group of cells on the platform, and the first electrodes or the second electrodes of the plurality of cells are arranged along the The axial direction is arranged on the same straight line; a whole strip of conductive adhesive film is pasted on the first electrode and/or the second electrode of the battery sheet group by a film sticking machine to obtain a battery sheet group; the battery sheet group is transferred to the heating table ; Laminating the two battery sheet groups so that the first electrode of one battery sheet group is engaged with the second electrode of the other battery sheet group; heating, so that the two cell groups are fixedly connected.

According to the production method of the full series parallel photovoltaic module of the embodiment of the present application, the production method of the full series parallel photovoltaic module includes the following steps: arranging a group of cells on the platform, and the first electrodes or the second electrodes of the plurality of cells are arranged along the The axial direction is arranged on the same straight line; the conductive adhesive film is pasted on the first electrode and/or the second electrode of the battery sheet group by a film sticking machine; two adjacent battery sheet groups are connected by a conductive adhesive film; Transfer the battery sheet group to the heating table; stack the two battery sheet groups so that the first electrode of one battery sheet group is engaged with the second electrode of the other battery sheet group; the two battery sheet groups are heated by the heating assembly The overlapping place is heated.

Description of drawings

Fig. 1 is a schematic bottom view of cells of a full series-parallel shingled photovoltaic module according to an embodiment of the present application.

Fig. 2 is a schematic bottom view of cells of a full string-parallel shingled photovoltaic module according to another embodiment of the present application.

Fig. 3 is a schematic diagram of cell connection of a full series-parallel shingled photovoltaic module according to an embodiment of the present application.

Fig. 4 is a schematic diagram of the first cells of the first cell group of the full string parallel shingled photovoltaic module according to an embodiment of the present application.

Fig. 5 is a schematic diagram of the first cells of the first cell group of the full string parallel shingled photovoltaic module according to another embodiment of the present application.

Fig. 6 is a schematic diagram of the gap between the first cells of the first cell group of the full string-parallel shingled photovoltaic module according to an embodiment of the present application.

Fig. 7 is a schematic diagram of the gap between the first cells of the first cell group of the full string parallel shingled photovoltaic module according to another embodiment of the present application.

Fig. 8 is a schematic diagram of the connection of the first battery sheet group and the second battery sheet group of the full string-parallel shingled photovoltaic module according to the embodiment of the present application.

Fig. 9 is a schematic diagram of the connection of the first battery sheet group and the second battery sheet group of the full string parallel shingled photovoltaic module according to another embodiment of the present application.

Fig. 10 is a schematic diagram of the connection of the first battery sheet group and the second battery sheet group of the full string parallel shingled photovoltaic module according to another embodiment of the present application.

Fig. 11 is a schematic diagram of the connection of the first battery sheet group and the second battery sheet group of the full string parallel shingled photovoltaic module according to another embodiment of the present application.

Fig. 12 is a schematic top view of a full series-parallel shingled photovoltaic module according to an embodiment of the present application.

Reference signs: 1, the first cell group; 2, the upper electrode; 3, the lower electrode; 4, the conductive film; 5, the gap; 6, the second cell group.

Detailed ways

Embodiments of the application are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application.

According to the full series parallel shingled photovoltaic module according to the embodiment of the present application, as shown in Fig. 1 to Fig. The first battery sheet group 1 of a row and the second battery sheet group 6 of multiple rows are arranged alternately in the column direction, and the first battery sheet group 1 of each row is misaligned with any adjacent second battery sheet group 6 in the row direction. Any one of the first battery slices or second battery slices in the first battery slice group 1 or the second battery slice group 6 is connected in parallel and connected with any adjacent row of adjacent second battery slices or first battery slices In series, for example, any two first battery pieces in a row of first battery piece group 1 are connected in parallel and any one first battery piece is connected in series with adjacent two second battery pieces in any adjacent row, and any two The second battery slices are connected in parallel and any second battery slice is connected in series with two adjacent first battery slices in any adjacent row. The second battery sheet has an upper edge electrode 2 and a lower edge electrode 3, and a conductive adhesive film 4 is pasted on the upper edge electrode 2 or/and the lower edge electrode 3 of the first battery sheet and the second battery sheet. The upper electrode 2 or the lower electrode 3 of the battery sheet group 1 is connected to the lower electrode 3 or the upper electrode 2 of the second battery sheet group 6 in each row through the conductive adhesive film 4 . The conductive adhesive film 4 connects the first cell and the second cell so that the connection between the first cell and the second cell is more stable and improves the efficiency of the photovoltaic module. Each row of the first cell group 1 and the two adjacent rows of the second cell group 6 are staggered so that each first cell can be connected in parallel with the adjacent first cell in the same row and in a column with it The two adjacent second battery slices in the direction are connected in series, because the first battery slice and the second battery slice are arranged alternately to obtain a mesh hybrid circuit, which can reduce the impact of the first battery slice being blocked and damaged on the photovoltaic module. It can eliminate the hot spot effect of photovoltaic modules and reduce the power loss caused by partial shading, so as to improve the efficiency of photovoltaic power generation. The first cell and the second cell have the same size and size.

According to the full series parallel shingled photovoltaic module of the embodiment of the present application, a conductive adhesive film with uniform thickness is pasted on the surface of the upper electrode and the lower electrode, and the upper electrode and the lower electrode on two adjacent cells are passed through the conductive adhesive. After the film is pasted and fixed, the conductive adhesive film can be melted under the heating of the heating component, realizing the lamination and connection of two adjacent battery sheets, so that the connection between the two adjacent battery sheets is stable and the power generation efficiency is high. The staggered arrangement of the first cell group and the adjacent second cell group makes the first cell and the second cell staggered to obtain a mesh hybrid circuit, which reduces the impact of the cells being blocked and damaged on the photovoltaic module. It can eliminate the hot spot effect of photovoltaic modules and reduce the power loss caused by partial shading, so as to improve the efficiency of photovoltaic power generation.

In some embodiments, as shown in Fig. 8 to Fig. 12, the stagger distance between the first battery sheet group 1 and the second battery sheet group 6 is: 0-50mm.

Specifically, the staggered distance between the first battery sheet group 1 and the second battery sheet group 6 changes the width of the parallel channel formed by connecting the first battery sheet with two adjacent second battery sheets. The width of the parallel channel formed by connecting one battery slice with two second battery slices increases. The stagger distance is greater than 0 and less than or equal to 50mm.

In some embodiments, the conductive adhesive film 4 has multiple layers, and the multi-layer conductive adhesive film 4 is laminated and pasted on the upper edge electrode 2 or/and the lower edge of a row of the first battery sheet group 1 or the second battery sheet group 6 on electrode 3.

Specifically, the conductive adhesive film 4 may be strip-shaped, and the conductive adhesive film 4 is pasted along the length direction of the upper electrode 2 or the lower electrode 3 of the first battery sheet and connects a plurality of upper electrodes 2 or lower electrodes 3, A plurality of strip-shaped conductive adhesive films 4 are pasted along the height direction, and the plurality of strip-shaped conductive adhesive films 4 are stacked together to further increase the connection strength between adjacent battery sheets.

In some embodiments, the conductive adhesive film 4 is pasted on the upper edge electrode 2 or/and the lower edge electrode 3 of a row of the first battery sheet group 1 or the second battery sheet group 6, and the length of the conductive adhesive film 4 is the same as that of a row. The sum of the lengths of the upper electrode 2 or/and the lower electrode 3 of the first battery sheet group 1 or the second battery sheet group 6 is equal.

Specifically, the length of the strip-shaped conductive adhesive film 4 is equal to the sum of the lengths of a plurality of electrodes of a row of battery sheets, and a whole strip of conductive adhesive film 4 connects the electrodes of a plurality of battery sheets together to improve the distance between the battery sheets. It can reduce the difficulty of sticking the conductive adhesive film 4 while improving the connection strength between them, and improve the processing efficiency.

In some embodiments, the conductive adhesive film 4 is divided into multiple sections and pasted on the upper electrode 2 or/and the lower electrode 3 of a row of the first battery sheet group 1 or the second battery sheet group 6 .

Specifically, the conductive adhesive film 4 is divided into multiple sections and bonded on the electrodes of the battery sheet group to reduce the amount of the conductive adhesive film 4. For example, the conductive adhesive film 4 is pasted on the upper edge of the first battery sheet and the adjacent first battery sheet. On the electrode 2, two sections of conductive adhesive film 4 are respectively pasted on both sides of the upper edge electrode 2 and two adjacent upper edge electrodes 2, and the gap between the two sections of conductive adhesive film 4 reduces the amount of conductive adhesive film 4 .

In some embodiments, the upper electrode 2 and the lower electrode 3 are sawtooth electrodes.

Specifically, the sawtooth of the sawtooth electrode may be in the shape of a triangle, a rectangle, a trapezoid, or the like. The upper electrode 2 and the lower electrode 3 are fixed by interlocking the saw teeth so as to increase the contact area between the upper electrode 2 and the lower electrode 3 .

In some embodiments, the first battery sheet and the second battery sheet are obtained by cutting a whole battery sheet with equally divided electrodes.

Specifically, the entire battery sheet can also be called the original battery sheet. The equal electrodes on the original battery sheet are cut into battery sheets with electrodes of the same size. The cutting ratio of the original battery sheet can be 1/2, 1/4, The cutting ratio of 1/6 is convenient for the subsequent splicing of the cut first battery sheet and the second battery sheet. The size and structure of the first cell and the second cell are the same.

In some embodiments, the gap 5 between the first battery slices of the first battery slice group 1 and the gap 5 between the second battery slices of the second battery slice group 6 range from 0 to 20 mm.

Specifically, there is a gap 5 between any two adjacent first battery slices in the first battery sheet group 1 in the row direction, and the distance between the gaps 5 is equal. Similarly, any two adjacent battery sheet groups 6 in the row direction There is also a gap 5 between the second battery slices, the gap 5 between any two adjacent first battery slices and the gap 5 between any two adjacent second battery slices have the same distance, and the adjacent battery slices The gap 5 between them can reduce the precision requirement of battery sheet arrangement, reduce the difficulty of assembly, improve assembly efficiency, improve the anti-shading ability of photovoltaic modules, increase the tension between the parallel cells of each row of battery sheet groups, and make its structure stable .

In some embodiments, the gaps 5 between the first battery sheets of the first battery sheet group 1 and the gaps 5 between the second battery sheets of the second battery sheet group 6 are connected by a conductive adhesive film 4 .

Specifically, connecting the gap 5 between two adjacent battery sheets through the conductive adhesive film 4 can improve the pulling force of the battery sheet group in the row direction to make its structure stable, and the conductive adhesive film 4 can better connect adjacent batteries in series. sheet, further reducing the contact resistance.

As shown in Figures 1 and 3, the production method of the full series parallel photovoltaic module according to the embodiment of the present application includes the following steps, using a film sticking machine to stick the conductive adhesive film 4 on the upper edge electrode 2 and/or of the battery sheet 1 On the sawtooth surface of the lower electrode 3, the battery sheet 1 after the film is transferred to the heating table by a robot, and the two battery sheets 1 are laminated so that the upper edge electrode 2 of one battery sheet 1 is aligned with the other battery sheet 1. The lower electrode 3 of the lower edge is engaged, and the heating assembly is used to heat the laminated part of the two battery sheets 1, and the conductive adhesive film 4 is melted to fully contact the upper electrode 2 and the lower electrode 3, so as to realize the laminated connection of the two battery sheets 1 .

In some embodiments, the production method with full series-parallel photovoltaic module production also includes transferring the battery sheet 1 to the heating table, and transferring the film-attached battery sheet 1 to the buffer table.

As a result, the cells 1 after pasting the film are stored on the buffer table, and the film lamination efficiency of the film laminating machine is greater than the efficiency of processing the cells 1 on the heating table. By storing the cells 1 on the buffer table, the accumulation of cells 1 in the gluing process can be reduced , avoiding the conflict between the gluing process and the laminated thermoforming process, and increasing the error tolerance rate of the gluing process.

As shown in Figure 1, in some embodiments, the upper edge electrode 2 is arranged on the top surface of the battery sheet 1, and the lower edge electrode 3 is arranged on the bottom surface of the battery sheet 1, and the conductive adhesive film 4 is made of hot-melt conductive silver glue. As a result, the conductive adhesive film 4 is pasted on the sawtooth surface of the lower electrode 3 . The conductive adhesive film 4 can be hot-melt silicon-based silver adhesive. The conductive adhesive film 4 can also adopt polymer materials such as POE (polyolefin thermoplastic elastomer) or EVA (ethylene-vinyl acetate copolymer), and the conductive particles can adopt conductive materials such as silver or copper, so that the conductive adhesive film becomes a material with adhesion, conductivity, etc. The characteristic polymer adhesive material can meet the connection requirements between the cells.

Specifically, the upper edge electrode 2 is arranged on the upper edge of the top surface of the battery sheet 1 , and the lower edge electrode 3 is arranged on the lower edge of the bottom surface of the battery sheet 1 . That is to say, the upper electrode 2 is arranged on the edge close to one end of the battery sheet 1 , the lower electrode 3 is arranged on the edge near the other end of the battery sheet 1 , and the upper electrode 2 and the lower electrode 3 are centrally symmetrical. The conductive adhesive film 4 is pasted on the lower edge electrode 3 , the battery sheet 1 is placed on the heating platform, and the heat generated by the heating component heating the heating platform causes the conductive adhesive film 4 to melt. Pasting the conductive adhesive film 4 on the lower edge electrode 3 can prevent the melted conductive adhesive film 4 from flowing to the heating stage, thereby effectively preventing the heating stage and the subsequent cells 1 from being polluted. Place the first battery on the heating table, grab the second battery, and align the lower electrode 3 of the second battery with the conductive adhesive film 4 and the upper electrode 2 of the first battery Lamination together, heating the lamination of the first battery piece and the second battery piece, the conductive adhesive film 4 is melted and dried, thereby realizing the lamination connection of the first battery piece and the second battery piece.

In some embodiments, the film laminating machine includes a limit mechanism, an adhesive film roller and a positioner, the limit mechanism constitutes an adhesive film groove for matching the lower edge electrode 3, and the adhesive film roller is used to move the conductive adhesive film 4 to the adhesive film The notch of the groove, the locator is arranged above the glue film groove and is used for pressing the conductive glue film 4 onto the sawtooth surface of the lower edge electrode 3 .

Specifically, the position limiting mechanism restricts the position of the lower electrode 3 through the film groove, and the shape of the film groove is adapted to the size of the lower electrode 3 . The adhesive film roller is used to move the conductive adhesive film 4. The adhesive film roller moves the conductive adhesive film 4 from the notch of the adhesive film groove along the length direction of the adhesive film groove, and the positioner presses the conductive adhesive film 4 on the lower edge of the electrode 3. On the serrated surface, the locator can make the conductive adhesive film 4 engage with the serrated surface of the lower edge electrode 3, that is, the bottom surface of the locator is provided with several serrated protrusions and depressions, which is convenient for evenly applying pressure to the conductive adhesive film 4 to make the conductive adhesive The film 4 is fully attached to the sawtooth surface of the lower electrode 3 .

In some embodiments, the film laminating machine further includes a first driving mechanism, which is connected to the positioner and used to drive the positioner to approach and move away from the limit mechanism.

Specifically, the first driving mechanism drives the positioner to perform linear reciprocating motion. The first driving mechanism includes a driving motor, a gear and a rack. The output end of the driving motor drives the gear to rotate. The gear and the rack are meshed, and the rack is connected to the positioner. . The drive motor drives the gear to rotate clockwise or counterclockwise to drive the rack to advance and retreat, and then the rack drives the locator to approach and move away from the limit mechanism.

In some embodiments, the heating assembly includes an infrared heating lamp, and the infrared heating lamp is disposed above the heating table.

Therefore, by setting the heating component as an infrared heating lamp, the melting efficiency of the conductive adhesive film 4 at the lamination of two adjacent battery pieces is high, and the energy consumption is small. In addition, by arranging the infrared heating lamp above the heating table, it is convenient for the infrared light to directly shine on the lamination of two adjacent cell sheets, thereby further improving the lamination connection efficiency.

In some embodiments, the infrared heating lamp is used to form a strip-shaped heating area on the heating table, and the heating area covers the lamination of two adjacent battery sheets.

Specifically, the infrared heating lamp has good controllability, and can control the heating range in the elongated heating area, and the heating area covers the overlapping place of two adjacent battery sheets, so that it can accurately heat the battery at the set position. The conductive adhesive film 4 between the upper electrode 2 and the lower electrode 3 can effectively avoid reheating the melted conductive adhesive film 4 to reduce its viscosity, reduce energy consumption, and ensure the contact between two adjacent cells. connection strength.

In some embodiments, the width of the heating zone is smaller than the width of the battery sheet and larger than the thickness of the upper electrode 2 . The thickness direction of the upper edge electrode 2 is parallel to the printed surface of the battery sheet, and the thickness direction of the upper edge electrode 2 is perpendicular to the end surface of the battery sheet where the upper edge electrode 2 is arranged.

Specifically, the width of the heating zone is smaller than the width of the battery sheet, which can reduce the heating range, improve heating efficiency, and control energy consumption. The width of the heating zone is greater than the thickness of the upper electrode 2, so that the sawtooth surface of the upper electrode 2 is completely in the heating zone. Inside, the conductive adhesive film 4 between the upper electrode 2 and the lower electrode 3 can be fully heated and melted to ensure the heating effect.

In some embodiments, the heating assembly further includes a second driving mechanism, which is connected to the infrared heating lamp and used to drive the infrared heating lamp to move along the width direction of the battery sheet.

Specifically, the second driving mechanism drives the infrared heating lamp to move, which can heat the conductive adhesive film 4 at the overlapping position of the two battery pieces at different adjacent positions, the heating assembly moves, and the battery piece is stationary relative to the heating table to avoid movement The heated battery sheet causes a dislocation between the upper electrode 2 and the lower electrode 3, which affects the connection strength of the battery sheet.

In some embodiments, according to the position of the locator, the infrared heating lamp is driven by the second driving mechanism to move to the intersection of the battery sheets in a jumping manner. The second driving mechanism drives the infrared heating lamp to move along the width direction of the battery sheet, the third driving mechanism drives the infrared heating lamp to move along the height direction of the battery sheet, and the third driving mechanism is used to adjust the distance between the infrared heating lamp and the battery sheet. When the infrared heating lamp moves from the overlapping position of the two battery sheets to the next heating position, the second driving mechanism drives the infrared heating lamp to move along the width direction of the battery sheet, and the third driving mechanism drives the infrared heating lamp to move away from the battery sheet. The distance from the infrared heating lamp to the next heating position in the width direction of the battery sheet is reduced, and the third driving mechanism drives the infrared heating lamp to move away from the battery sheet, and the trajectory of the infrared heating lamp approximates an arc. Therefore, the infrared heating lamp does not need to be turned on and off repeatedly, which can improve the heating efficiency, increase the moving speed of the infrared heating lamp while ensuring the heating accuracy, shorten the moving time of the infrared heating lamp, and reduce the heat loss caused by turning on the infrared heating lamp.

The method for producing a full series-parallel photovoltaic module according to an embodiment of the present application includes the following steps:

Arranging a group of battery sheets on the platform, the first electrodes or the second electrodes of the plurality of battery sheets are arranged on the same straight line in the axial direction;

A whole strip of conductive adhesive film is pasted on the first electrode and/or the second electrode of the battery sheet group by a film sticking machine to obtain the battery sheet group; the length of the entire conductive adhesive film is related to a plurality of first electrodes or The sum of the lengths of the second electrodes is equal, and the use of a complete conductive adhesive film to paste the electrodes of the battery sheet group can increase the tension between the battery sheets to ensure the connection strength of the battery sheet group.

transferring the battery sheet group to a heating station;

Laminating the two battery sheet groups so that the first electrode of one battery sheet group is engaged with the second electrode of the other battery sheet group;

A heating assembly is used to heat the overlapping place of the two battery sheet groups, so that the two battery sheet groups are fixedly connected.

The method for producing a full series-parallel photovoltaic module according to an embodiment of the present application includes the following steps:

Arranging a group of battery sheets on the platform, the first electrodes or the second electrodes of the plurality of battery sheets are arranged on the same straight line in the axial direction;

The conductive adhesive film is pasted on the first electrode and/or the second electrode of the cell group in sections by a film sticking machine; the conductive adhesive film divided into multiple segments is attached to a plurality of first electrodes or second electrodes in the axial direction of the cell group. The electrodes are connected together, which can reduce the amount of conductive adhesive film, ensure the connection strength of the battery sheet group and reduce the production cost of the battery sheet group.

Two adjacent cell groups are connected by a conductive adhesive film;

Transfer the cell pack to the heating station;

stacking the two cell groups so that the first electrode of one cell group engages the second electrode of the other cell group;

The lamination of the two cell groups is heated by the heating assembly.

The technical advantages of the production method of the full series parallel photovoltaic module according to the embodiment of the present application are the same as those of the production method of the full series parallel photovoltaic module of the above embodiment, and will not be repeated here.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, constructed, and operate in a particular orientation, and thus should not be construed as limiting of the application.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this application, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In the present application, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In this application, the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" mean specific features, structures, materials, or features described in connection with the embodiment or examples. Features are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present application, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (22)

1. A full series parallel shingled photovoltaic module, characterized in that it includes: multiple rows of first battery sheet groups and multiple rows of second battery sheet groups, multiple rows of the first battery sheet group and multiple rows of the second battery sheet The groups are staggered in the column direction, the first battery sheet group in each row is misaligned with any adjacent row of the second battery sheet group in the row direction, and the first battery sheet group or the second battery sheet group in each row is Any one of the first battery slices or the second battery slices in the sheet group is connected in parallel and connected in series with two adjacent second battery slices or the first battery slices in any adjacent row;

   Both the first battery slice of the first battery slice group and the second battery slice of the second battery slice group have an upper edge electrode and a lower edge electrode, and the upper edge electrodes of the first battery slice and the second battery slice are A conductive adhesive film is pasted on the edge electrode or/and the lower edge electrode, and the upper edge electrode or the lower edge electrode of each row of the first battery sheet group passes through the conductive adhesive film and the lower electrode of each row of the second battery sheet group. Connect along the electrode or on the electrode along the edge.
2. The full series-parallel shingled photovoltaic module according to claim 1, wherein the stagger distance between the first battery sheet group and the second battery sheet group is 0-50 mm.
3. The full series parallel shingled photovoltaic module according to claim 1, wherein the conductive adhesive film has multiple layers, and the multiple layers of the conductive adhesive film are laminated and pasted on a row of the first cell group or On the upper electrode or/and the lower electrode of the second cell sheet group.
4. The full series parallel shingled photovoltaic module according to claim 1, wherein the conductive adhesive film is pasted on the upper edge electrodes or/and of a row of the first cell group or the second cell group The length of the conductive adhesive film on the lower electrode is equal to the sum of the lengths of the upper electrode or/and the lower electrode of a row of the first battery sheet group or the second battery sheet group.
5. The full string parallel shingled photovoltaic module according to claim 3 or 4, wherein the conductive adhesive film is divided into multiple sections and pasted on a row of the first cell group or the second cell group On the upper edge electrode or/and on the lower edge electrode.
6. The full series parallel shingled photovoltaic module according to claim 1, wherein the upper electrode and the lower electrode are sawtooth electrodes.
7. The full series-parallel shingled photovoltaic module according to claim 1, wherein the first cell sheet and the second cell sheet are obtained by cutting a whole cell sheet with equally divided electrodes.
8. The full series-parallel shingled photovoltaic module according to claim 1, wherein the gap between the first cells of the first cell group and the gap between the second cells of the second cell group are The gap range is 0 ~ 20mm.
9. The full series-parallel shingled photovoltaic module according to claim 8, wherein the gap between the first cells of the first cell group and the gap between the second cells of the second cell group are The gaps are connected by conductive adhesive film.
10. A method for producing a full series-parallel photovoltaic module, comprising the following steps:

    Paste the conductive adhesive film on the first electrode and/or the second electrode of the battery sheet by a film pasting machine;

    Transfer the cells to the heating table, and laminate the two cells so that the first electrode of one cell is engaged with the second electrode of the other cell;

    The lamination of the two battery sheets is heated by the heating assembly.
11. The method for producing a full series-parallel photovoltaic module according to claim 10, wherein the first electrode and the second electrode of the battery sheet are both serrated electrodes.
12. The method for producing a full series parallel photovoltaic module according to claim 10, further comprising: transferring the cells to the heating table, and transferring the film-attached cells to the buffer table.
13. The production method of a full series parallel photovoltaic module according to claim 10, wherein the first electrode is arranged on the top surface of the battery sheet, and the second electrode is arranged on the bottom surface of the battery sheet, so The conductive adhesive film is made of hot-melt conductive silver adhesive, and the conductive adhesive film is pasted on the serrated surface of the second electrode.
14. The production method of a full series-parallel photovoltaic module according to claim 10, wherein the film laminating machine comprises:

    A limit mechanism, the limit mechanism constitutes an adhesive film groove for the second electrode to cooperate with;

    An adhesive film roller, the adhesive film roller is used to move the conductive adhesive film to the notch of the adhesive film groove; and

    A locator, the locator is arranged above the adhesive film groove and is used for pressing the conductive adhesive film onto the serrated surface of the second electrode.
15. The method for producing full series-parallel photovoltaic modules according to claim 14, wherein the film laminating machine further comprises a first driving mechanism connected to the positioner and used to drive the positioner close to and away from the limit mechanism.
16. The production method of a full series parallel photovoltaic module according to claim 10, wherein the heating component comprises an infrared heating lamp, and the infrared heating lamp is arranged above the heating table.
17. The production method of full series-parallel photovoltaic modules according to claim 16, wherein the infrared heating lamp is used to form a strip-shaped heating area on the heating table, and the heating area covers two adjacent The lamination of the battery sheet.
18. The method for producing a full series-parallel photovoltaic module according to claim 17, wherein the width of the heating zone is smaller than the width of the battery sheet and larger than the thickness of the first electrode.
19. The method for producing a full series-parallel photovoltaic module according to claim 18, wherein the heating assembly further includes a second driving mechanism, the second driving mechanism is connected with the infrared heating lamp and is used to drive the infrared heating The lamp moves along the width direction of the battery sheet.
20. The method for producing a full series-parallel photovoltaic module according to claim 19, wherein the infrared heating lamp is driven by the second drive mechanism to move in jumps to the overlap of the battery sheets according to the position of the positioner.
21. A method for producing a full series-parallel photovoltaic module, comprising the following steps:

    Arranging a group of battery sheets on the platform, the first electrodes or the second electrodes of the plurality of battery sheets are arranged on the same straight line in the axial direction;

    Paste a whole piece of conductive adhesive film on the first electrode and/or the second electrode of the battery sheet group by a film sticking machine to obtain the battery sheet group;

    transferring the battery sheet group to a heating station;

    Laminating the two battery sheet groups so that the first electrode of one battery sheet group is engaged with the second electrode of the other battery sheet group;

    A heating assembly is used to heat the overlapping place of the two battery sheet groups, so that the two battery sheet groups are fixedly connected.
22. A method for producing a full series-parallel photovoltaic module, comprising the following steps:

    Arranging a group of battery sheets on the platform, the first electrodes or the second electrodes of the plurality of battery sheets are arranged on the same straight line in the axial direction;

    Paste the conductive adhesive film on the first electrode and/or the second electrode of the battery sheet group by a film sticking machine;

    Two adjacent cell groups are connected by a conductive adhesive film;

    Transfer the cell pack to the heating station;

    stacking the two cell groups so that the first electrode of one cell group engages the second electrode of the other cell group;

    The lamination of the two cell groups is heated by the heating assembly.

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