A device and method for stringing solar cells

Abstract

The present invention provides a cell stringing device and a stringing method. The cell stringing device includes a cell glue coating mechanism, a cell stacking mechanism, a solder tape stacking mechanism and a conveying mechanism, wherein: the cell glue coating mechanism is configured to coat insulating glue on the regions between adjacent sub-grid lines on the first surface and the second surface of the cell; the cell stacking mechanism and the solder tape stacking mechanism are configured to stack the glued cells and solder tape groups onto the conveying mechanism to form a cell string. Among them, the first half of the i-th group of solder tapes is adhesively attached to the first surface of the i-th cell by insulating glue and is perpendicular to all the sub-grid lines on the first surface, and the second half of the i-th group of solder tapes is adhesively attached to the second surface of the (i + 1)-th cell by insulating glue and is perpendicular to all the sub-grid lines on the second surface. The cell stringing device and the cell stringing method provided by the present invention realize the series connection operation of the main-gridless cells.

Description

Technical Field

[0001] The present invention relates to the field of battery production, and more particularly to a device and method for stringing battery wafers. Background Art

[0002] Currently, for conventional battery wafers, lateral extending sub-grid lines and longitudinal extending main-grid lines for collecting current are provided on both the front and back surfaces. Compared with the sub-grid lines, the main-grid lines are much wider.

[0003] Since a large surface area of the battery wafer is occupied by the main-grid lines, the light-receiving area of the battery wafer is significantly reduced, ultimately resulting in limited photoelectric conversion efficiency of the battery wafer. In view of this, the industry has proposed a new type of main-grid-line-free battery wafer, on which only sub-grid lines are provided on the front and back surfaces. Compared with traditional battery wafers, the photoelectric conversion efficiency of the main-grid-line-free battery wafer has been significantly improved.

[0004] Traditional battery wafer stringing devices can only perform series welding on conventional battery wafers, that is, welding a solder tape group on the main-grid lines of adjacent battery wafers, and then curing the solder tape on the battery wafer by heating the solder tape. Traditional battery wafer stringing devices cannot perform series connection on main-grid-line-free battery wafers.

[0005] In view of this, it is necessary to develop a battery wafer stringing device specifically for welding main-grid-line-free battery wafers to perform series connection on main-grid-line-free battery wafers. Summary of the Invention

[0006] To achieve the above technical objectives, in a first aspect, the present invention provides a battery wafer stringing device, which adopts the following technical solutions:

[0007] A battery wafer stringing device for connecting a plurality of battery wafers into a battery string. A plurality of sub-grid lines are provided on both the first surface and the second surface of the battery wafer. The battery wafer stringing device includes a battery wafer glue coating mechanism, a battery wafer stacking mechanism, a solder tape stacking mechanism, and a conveying mechanism, wherein:

[0008] The battery wafer glue coating mechanism is configured to coat insulating glue in the areas between adjacent sub-grid lines on the first surface and the second surface of the battery wafer;

[0009] The battery wafer stacking mechanism and the solder tape stacking mechanism are configured to stack the glue-coated battery wafers and the solder tape group on the conveying mechanism to form a battery string. Among them, the first half of the i-th group of solder tapes is adhesively attached to the first surface of the i-th battery wafer by insulating glue and is perpendicular to all the sub-grid lines on the first surface, and the second half of the i-th group of solder tapes is adhesively attached to the second surface of the (i + 1)-th battery wafer by insulating glue and is perpendicular to all the sub-grid lines on the second surface, where i is an integer greater than or equal to 1.

[0010] Through the cooperation of the battery cell gluing mechanism, the battery cell stacking mechanism, the solder tape stacking mechanism and the conveying mechanism, the battery cell stringing device provided by the present invention realizes the stringing operation of the main-gridless battery cells.

[0011] In some embodiments, the battery cell gluing mechanism includes a battery cell loading mechanism, a gluing conveying mechanism and a gluing assembly, wherein: the battery cell loading mechanism is used to load the battery cells onto the gluing conveying mechanism; the gluing conveying mechanism is used to convey the battery cells to the gluing assembly; the gluing assembly is used to coat the insulating glue in the area between adjacent sub-grid lines on the first surface and the second surface of the battery cells.

[0012] Through the cooperation of the battery cell loading mechanism, the gluing conveying mechanism and the gluing assembly, the battery cell gluing mechanism realizes the automatic loading, conveying and gluing of the battery cells.

[0013] In some embodiments, the gluing conveying mechanism includes a first conveyor belt and a second conveyor belt arranged side by side. The first conveyor belt is used to support the first side edge of the battery cell, and the second conveyor belt is used to support the second side edge of the battery cell opposite to the first side edge.

[0014] By setting the gluing conveying mechanism as the first conveyor belt and the second conveyor belt, on the premise of realizing the conveying of the battery cells, the gluing assembly can apply glue to the battery cells from below the gluing conveying mechanism.

[0015] In some embodiments, the gluing assembly is set in two groups, wherein: one group of gluing assemblies is arranged above the gluing conveying mechanism and is used to coat the insulating glue on the first surface of the battery cell; the other group of gluing assemblies is arranged below the gluing conveying mechanism and is used to coat the insulating glue on the second surface of the battery cell.

[0016] By setting two groups of gluing assemblies to respectively perform the gluing operations on the first surface and the second surface of the battery cells, the gluing efficiency is improved.

[0017] In some embodiments, the battery cell gluing mechanism further includes a battery cell flipping mechanism arranged on the gluing conveying mechanism, and the battery cell flipping mechanism is used to flip the battery cells; the gluing assembly is set in two groups, and both groups of gluing assemblies are arranged above or below the gluing conveying mechanism. One group of gluing assemblies is used to coat the insulating glue on the first surface of the battery cell before the battery cell is flipped, and the other group of gluing assemblies is used to coat the insulating glue on the second surface of the battery cell after the battery cell is flipped; or, the gluing assembly is set in one group, and the gluing assembly is arranged above or below the gluing conveying mechanism. When the gluing assembly moves to the first position, it coats the insulating glue on the first surface of the battery cell, and when the gluing assembly moves to the second position behind the first position, it coats the insulating glue on the second surface of the battery cell.

[0018] By setting up a cell flipping mechanism, the flipping of cells is achieved, enabling the glue coating assembly located above or below the glue coating conveying mechanism to apply glue to the first surface and the second surface of the cells.

[0019] In some embodiments, the glue coating assembly is a printing device or a spraying device.

[0020] Two implementation methods of the glue coating assembly are provided, and the insulating glue is coated on the cells by printing and spraying respectively.

[0021] In some embodiments, the cell glue coating mechanism further includes a first positioning mechanism arranged above the glue coating conveying mechanism and in front of the glue coating assembly, and a second positioning mechanism arranged above the glue coating conveying mechanism and behind the glue coating assembly. Among them, the first positioning mechanism is used to position the cells to be coated with glue, and the second positioning mechanism is used to position the cells after the glue coating is completed.

[0022] The first positioning mechanism positions the cells before the glue coating, so as to ensure that the glue coating assembly can accurately coat the insulating glue on the target area of the cells. The second positioning mechanism positions the cells after the glue coating, so as to ensure that the subsequent cell stacking mechanism can smoothly obtain the cells after the glue coating is completed.

[0023] In some embodiments, the cell stringing device further includes a stringing mechanism arranged above or below the conveying mechanism. The stringing mechanism is used to heat the cells, solder tapes and insulating glue, so that the solder tapes are bonded to the cells.

[0024] By setting up the stringing mechanism, the heating of the cells, solder tapes and insulating glue is achieved, so that the solder tapes are firmly bonded to the cells.

[0025] In some embodiments, the cell stringing device further includes a string cutting mechanism arranged at the discharging end of the conveying mechanism. The string cutting mechanism is used to cut the cell strings.

[0026] By setting up the string cutting mechanism, the cell strings are cut into cell strings of a predetermined length.

[0027] In some embodiments, the solder tape stacking mechanism includes a solder tape unrolling mechanism, a solder tape traction mechanism and a solder tape cutting mechanism. Among them: the solder tape unrolling mechanism includes a mounting plate and a plurality of feeding disks arranged on the mounting plate. Each feeding disk supports a roll of solder tape material roll and releases a solder tape; the solder tape traction mechanism synchronously pulls the solder tapes released from each feeding disk onto the conveying mechanism; the solder tape cutting mechanism synchronously cuts each solder tape to stack a group of solder tapes.

[0028] By setting up the solder tape stacking mechanism, the synchronous traction and stacking of multiple solder tapes onto the cells are achieved, improving the solder tape stacking efficiency.

[0029] The second aspect of the present invention provides a method for stringing solar cells, which adopts the following technical solutions:

[0030] A method for stringing solar cells is used to connect a plurality of solar cells in series to form a solar cell string. A plurality of sub-grid lines are provided on both the first surface and the second surface of the solar cell. The method for stringing solar cells includes:

[0031] Coating insulating glue in the areas between adjacent sub-grid lines on the first surface and the second surface of the solar cell;

[0032] Stacking the glue-coated solar cells and the solder tape groups on a conveying mechanism to form a solar cell string. Among them, the first half of the i-th group of solder tapes is adhesively attached to the first surface of the i-th solar cell through insulating glue, and the second half of the i-th group of solder tapes is adhesively attached to the second surface of the (i + 1)-th solar cell through insulating glue, where i is an integer greater than or equal to 1.

[0033] The method for stringing solar cells provided by the present invention realizes the stringing operation of main-gridless solar cells.

[0034] In some embodiments, coating insulating glue in the areas between adjacent sub-grid lines on the first surface and the second surface of the solar cell includes: loading the solar cell onto a glue-coating conveying mechanism; the glue-coating conveying mechanism conveys the solar cell to a glue-coating assembly; and the glue-coating assembly coats insulating glue in the areas between adjacent sub-grid lines on the first surface and the second surface of the solar cell.

[0035] It realizes the automatic loading, conveying and glue coating of the solar cell.

[0036] Optionally, coating insulating glue in the areas between adjacent sub-grid lines on the first surface and the second surface of the solar cell is: coating a predetermined number of dot-shaped insulating glues in the areas between adjacent sub-grid lines along the extension direction of the sub-grid lines in a discontinuous dot-gluing manner, and ensuring that the dot-shaped insulating glues at corresponding positions in different areas are on the same series connection line, and the series connection line is perpendicular to the sub-grid line; or coating continuous linear insulating glue in the areas between adjacent sub-grid lines along the extension direction of the sub-grid lines in a continuous glue-coating manner.

[0037] The discontinuous dot-gluing method can reduce the consumption of insulating glue, thus saving the glue-coating cost and reducing the pollution of the insulating glue to the solar cell. The continuous glue-coating method improves the glue-coating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic structural diagram of the solar cell glue-coating mechanism in the solar cell stringing device of the present invention;

[0039] Figure 2 It is a schematic structural diagram of the solar cell stringing device of the present invention after omitting components such as the solder tape stacking mechanism;

[0040] Figure 3 This is a schematic structural diagram of the battery cell stringing device of the present invention after omitting components such as the battery cell gluing mechanism and the battery cell stacking mechanism;

[0041] Figure 4 This is a schematic structural diagram of one surface of a main-gridless battery cell;

[0042] Figure 5 This is a schematic structural diagram of one surface of a main-gridless battery cell after gluing is completed;

[0043] Figure 6 This is a schematic side view structural diagram of the connected battery cells;

[0044] Figure 7 This is a schematic structural diagram of one surface of a main-gridless battery cell after the solder tape stacking is completed;

[0045] Figures 1 to 7 It includes:

[0046] Battery cell gluing mechanism 10: Gluing conveying mechanism 11, gluing component 12, battery cell flipping mechanism 13, first positioning mechanism 14, second positioning mechanism 15, first conveyor belt 111, second conveyor belt 112;

[0047] Battery cell stacking mechanism 20;

[0048] Solder tape stacking mechanism 30: Solder tape unwinding mechanism 31, solder tape traction mechanism 32, solder tape cutting mechanism 33;

[0049] Conveying mechanism 40;

[0050] Connecting mechanism 50;

[0051] String cutting mechanism 60;

[0052] Main-gridless battery cell 100, secondary grid line 101, dot-shaped insulating glue 200, solder tape 300. Specific implementation manner

[0053] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0054] Traditional battery cell stringing devices can only perform the string soldering of conventional battery cells, that is, welding a solder tape group on the main grid lines of adjacent battery cells, and then heating the solder tape to make the solder tape solidify on the battery cells. Traditional battery cell stringing devices cannot perform the string soldering of main-gridless battery cells.

[0055] In view of this, the present invention provides a cell stringing device and method for connecting main-gridless cells in series to implement the series connection of main-gridless cells.

[0056] As Figure 4 shown, on the first surface and the second surface of the main-gridless cell (hereinafter simply referred to as the cell) 100 to be connected in series by the present invention, only a plurality of mutually parallel sub-grid lines 101 for collecting current are provided. Among them, the first surface is the front surface of the cell, the second surface is the back surface of the cell, or the first surface is the back surface of the cell and the second surface is the front surface of the cell.

[0057] Hereinafter, the cell stringing device and the cell stringing method provided by the present invention will be exemplarily introduced through two embodiments respectively.

[0058] First Embodiment

[0059] As Figures 1 to 3 shown, the cell stringing device provided in this embodiment includes a cell gluing mechanism 10, a cell stacking mechanism 20, a solder tape stacking mechanism 30 and a conveying mechanism 40, wherein:

[0060] The cell gluing mechanism 10 is configured to coat the insulating glue in the area between adjacent sub-grid lines on the first surface and the second surface of the cell 100.

[0061] To save the insulating glue and reduce the pollution of the insulating glue to the cell, optionally, as Figure 5 shown, the cell gluing mechanism 10 coats a predetermined number (such as Figure 5 six in

[0062] ) of dot-shaped insulating glue 200 in the area between adjacent sub-grid lines 101 in a discontinuous dot gluing manner along the extension direction of the sub-grid lines 101, and ensures that the dot-shaped insulating glue 200 at corresponding positions in different areas is on the same series connection line L, wherein the series connection line L is perpendicular to the sub-grid lines 101.

[0063] Of course, for the consideration of gluing efficiency, it is also possible to coat the glue continuously along the extension direction of the sub-grid lines 101, so as to coat a continuous linear insulating glue in the area between adjacent sub-grid lines 101. Figure 6 shown, the front half of the i-th group of solder tapes is adhesively attached to the first surface (such as the front surface) of the i-th cell through insulating glue and is perpendicular to all the sub-grid lines on the first surface, and the rear half of the i-th group of solder tapes is adhesively attached to the second surface (such as the back surface) of the (i + 1)-th cell through insulating glue and is perpendicular to all the sub-grid lines on the second surface, where i is an integer greater than or equal to 1.

[0064] Of course, a head solder tape group and a tail solder tape group are respectively adhered to the head and tail ends of the battery string.

[0065] As Figure 5 and Figure 7 shown, six dot-shaped insulating adhesives 200 are coated in the area between each adjacent sub-grid line 101, that is, six string connection lines L are formed on both the first surface and the second surface of the battery cell 100. Therefore, correspondingly, each group of solder tapes includes six solder tapes 300, and each solder tape 300 is adhered to one string connection line L accordingly.

[0066] It can be seen that through the cooperation of the battery cell gluing mechanism 10, the battery cell stacking mechanism 20, the solder tape stacking mechanism 30 and the conveying mechanism 40, the battery cell stringing device provided by the embodiment of the present invention realizes the stringing operation of the main-gridless battery cells.

[0067] As Figure 1 shown, optionally, the battery cell gluing mechanism 10 includes a battery cell loading mechanism (not shown), a gluing conveying mechanism 11 and a gluing assembly 12, wherein: the battery cell loading mechanism is used to load the battery cells onto the gluing conveying mechanism 11. The gluing conveying mechanism 11 is used to convey the battery cells to the gluing assembly 12. The gluing assembly 12 is used to coat the insulating adhesive in the area between each adjacent sub-grid line on the first surface and the second surface of the battery cell.

[0068] Optionally, as Figure 1 and Figure 2 shown, the battery cell gluing mechanism 10 further includes a battery cell flipping mechanism 13 arranged on the gluing conveying mechanism 11, and the battery cell flipping mechanism 13 is used to flip the battery cell 100. For example, when the battery cell loading mechanism loads the battery cell 100 onto the gluing conveying mechanism 11, the first surface (such as the front surface) of the battery cell 100 faces upward, and after being flipped by the battery cell flipping mechanism 13, the second surface (such as the back surface) of the battery cell 100 faces.

[0069] Figure 1 and Figure 2 shown in the embodiment, a total of two groups of gluing assemblies 12 are provided, and both groups of gluing assemblies 12 are arranged above the gluing conveying mechanism 11. Among them, one group of gluing assemblies 12 in the front channel coats the insulating adhesive on the first surface of the battery cell 100 before the battery cell 100 is flipped, and the other group of gluing assemblies 12 in the back channel coats the insulating adhesive on the second surface of the battery cell 100 after the battery cell 100 is flipped.

[0070] Of course, both groups of gluing assemblies 12 can also be arranged below the gluing conveying mechanism 11, and the two groups of gluing assemblies 12 coat the insulating adhesive on the two surfaces of the battery cell 100 from below successively.

[0071] In order to enable the glue - applying component 12 disposed below the glue - applying conveying mechanism 11 to smoothly apply insulating glue to the battery cell, optionally, as Figure 2 shown, the glue - applying conveying mechanism 11 includes a first conveyor belt 111 and a second conveyor belt 112 arranged side by side. The first conveyor belt 111 is used to support the first side of the battery cell 100, and the second conveyor belt 112 is used to support the second side of the battery cell 100 opposite to the first side. In this way, the downward - facing surface of the battery cell 100 located on the glue - applying conveying mechanism 11 can almost completely expose the glue - applying conveying mechanism 11, so that it can smoothly receive the glue application from the glue - applying component 12.

[0072] Of course, in order to reduce the glue - applying cost, optionally, only one set of glue - applying components 12 can be provided, which can be arranged above the glue - applying conveying mechanism 11 or below the glue - applying conveying mechanism 11. Specifically, the glue - applying component 12 is configured to be able to move along the conveying direction of the glue - applying conveying mechanism 11. When the glue - applying component 12 moves to the first position, it applies insulating glue to the first surface of the battery cell, and when the glue - applying component moves to the second position behind the first position, it applies insulating glue to the second surface of the battery cell.

[0073] For the above - mentioned several glue - applying methods, a battery - cell flipping mechanism 13 needs to be provided to implement the flipping operation of the battery cell, and its glue - applying efficiency needs to be improved. Considering this, optionally, two sets of glue - applying components 12 are provided, where: one set of glue - applying components 12 is arranged above the glue - applying conveying mechanism 11 and is used to apply insulating glue to the first surface of the battery cell, and the other set of glue - applying components 12 is arranged below the glue - applying conveying mechanism 11 and is used to apply insulating glue to the second surface of the battery cell. In this way, without implementing the flipping of the battery cell 100, the glue - applying operation on the two surfaces of the battery cell 100 can be implemented, thereby improving the glue - applying efficiency.

[0074] Of course, by adjusting the installation positions of the two sets of glue - applying components 12, the two sets of glue - applying components 12 can implement the synchronous glue - applying to the two surfaces of the battery cell, thereby further improving the glue - applying efficiency.

[0075] Optionally, a printing device or a spraying device is used as the glue - applying component 12 in the embodiment of the present invention. Among them, the printing device prints insulating glue onto the battery cell in a screen - printing manner through components such as a squeegee and a printing plate, while the spraying device sprays insulating glue onto the battery cell through a high - pressure nozzle.

[0076] Continue to refer to Figure 1 and Figure 2As shown, optionally, the battery cell gluing mechanism 10 further includes a first positioning mechanism 14 disposed above the gluing conveying mechanism 11 and in front of the gluing assembly 12, and a second positioning mechanism 15 disposed above the gluing conveying mechanism 11 and behind the gluing assembly 12. Among them, the first positioning mechanism 14 is used to position the battery cell 100 to be glued, and the second positioning mechanism 15 is used to position the battery cell 100 after gluing is completed.

[0077] The first positioning mechanism 14 positions the battery cell 100 before gluing, so as to ensure that the gluing assembly 12 can accurately apply the insulating glue to the target area of the battery cell 100. The second positioning mechanism 15 positions the battery cell 100 after gluing, which can ensure that the subsequent battery cell stacking mechanism 20 can smoothly obtain the battery cell 100 after gluing is completed.

[0078] Considering that the solder tape is only adhered to the battery cell by insulating glue, its connection strength with the battery cell is low and it is easy to break away. Therefore, as Figure 3 shown, optionally, the battery cell stringing device of this embodiment further includes a stringing mechanism 50 disposed above or below the conveying mechanism. The stringing mechanism 50 is used to heat the battery cell 100, the solder tape and the insulating glue, so that the solder tape can be firmly adhered to the battery cell 100.

[0079] Optionally, as Figure 3 shown, the battery cell stringing device of this embodiment further includes a string cutting mechanism 60 disposed at the discharging end of the conveying mechanism 40. The string cutting mechanism 60 is used to cut the battery string after stringing, so as to cut the battery string into battery strings with a predetermined length.

[0080] Continuing to refer to Figure 3 shown, optionally, the solder tape stacking mechanism 30 includes a solder tape unwinding mechanism 31, a solder tape traction mechanism 32 and a solder tape cutting mechanism 33, where: the solder tape unwinding mechanism 31 includes a mounting plate and a plurality of feeding disks disposed on the mounting plate. Each feeding disk supports a roll of solder tape material roll and releases a solder tape. The solder tape traction mechanism 32 synchronously pulls the solder tapes released from each feeding disk onto the conveying mechanism 40. The solder tape cutting mechanism 33 synchronously cuts each solder tape to stack a group of solder tapes.

[0081] Second Embodiment

[0082] The battery cell stringing method provided in this embodiment can be implemented by the battery cell stringing device in the foregoing first embodiment. Specifically, the battery cell stringing method includes the following steps:

[0083] Apply the insulating glue to the areas between adjacent sub-grid lines on the first surface and the second surface of the battery cell.

[0084] The battery cells and solder tapes that have been coated with glue are stacked on a conveying mechanism to form a battery string. Among them, the first half of the i-th group of solder tapes is adhesively attached to the first surface (such as the front surface) of the i-th battery cell through insulating glue and perpendicularly intersects all the sub-grid lines on the first surface. The second half of the i-th group of solder tapes is adhesively attached to the second surface (such as the back surface) of the (i + 1)-th battery cell through insulating glue and perpendicularly intersects all the sub-grid lines on the second surface, where i is an integer greater than or equal to 1.

[0085] It can be seen that the method for forming a battery string provided in this embodiment realizes the operation of forming a string for the main-gridless battery cells.

[0086] Optionally, the insulating glue is coated into the areas between adjacent sub-grid lines on the first surface and the second surface of the battery cell according to the following process:

[0087] First, the battery cell is loaded onto the glue-coating conveying mechanism.

[0088] Next, the glue-coating conveying mechanism conveys the battery cell to the glue-coating assembly.

[0089] Finally, the glue-coating assembly coats the insulating glue into the areas between adjacent sub-grid lines on the first surface and the second surface of the battery cell.

[0090] To save the insulating glue and reduce the pollution of the insulating glue to the battery cell, optionally, as Figure 5 shown, the glue-coating assembly coats a predetermined number (such as Figure 5 six in

[0091]

[0092] Figure 5 Figure 7 and

[0093] shown) of dot-shaped insulating glue 200 in the areas between adjacent sub-grid lines 101 along the extending direction of the sub-grid line 101 in a discontinuous dot-gluing manner, and ensures that the dot-shaped insulating glue 200 at corresponding positions in different areas is on the same series connection line L, and the series connection line L is perpendicular to the sub-grid line 101.

[0093] Of course, considering the glue-coating efficiency, it is also possible to coat continuous linear insulating glue in the areas between adjacent sub-grid lines 101 along the extending direction of the sub-grid line 101 in a continuous glue-coating manner.

[0094] As Figure 5 and Figure 7 shown, six dot-shaped insulating glue 200 are coated in the areas between adjacent sub-grid lines 101, that is, six series connection lines L are formed on both the first surface and the second surface of the battery cell 100. Therefore, correspondingly, each group of solder tapes includes six solder tapes 300, and each solder tape 300 is adhesively attached to a series connection line L.

[0094] It should be noted that the various optional implementation manners in the first embodiment described above also apply to this embodiment, and will not be elaborated here.

[0094] The above has described the present invention in sufficient detail with a certain particularity. Those of ordinary skill in the art should understand that the description in the embodiments is only exemplary, and all changes made without departing from the true spirit and scope of the present invention should fall within the protection scope of the present invention. The scope of protection required by the present invention is defined by the claims described, rather than by the above description in the embodiments.

Claims

1. A cell stringing device for connecting a plurality of cells into a cell string, wherein a plurality of sub-grid lines are provided on both the first surface and the second surface of the cell, and is characterized in that, The cell stringing device includes a cell gluing mechanism, a cell stacking mechanism, a solder tape stacking mechanism, and a conveying mechanism, where: The cell gluing mechanism is configured to coat the insulating glue in the area between adjacent sub-grid lines on the first surface and the second surface of the cell; The cell stacking mechanism and the solder tape stacking mechanism are configured to stack the glued cells and solder tape groups onto the conveying mechanism to form a cell string. Among them, the first half of the i-th group of solder tapes is adhered to the first surface of the i-th cell by the insulating glue and perpendicularly intersects all the sub-grid lines on the first surface, and the second half of the i-th group of solder tapes is adhered to the second surface of the (i + 1)-th cell by the insulating glue and perpendicularly intersects all the sub-grid lines on the second surface, where i is an integer greater than or equal to 1.

2. The cell stringing device according to claim 1, wherein The cell gluing mechanism includes a cell loading mechanism, a gluing conveying mechanism, and a gluing component, where: The cell loading mechanism is used to load the cells onto the gluing conveying mechanism; The gluing conveying mechanism is used to convey the cells to the gluing component; The gluing component is used to coat the insulating glue in the area between adjacent sub-grid lines on the first surface and the second surface of the cell.

3. The cell stringing device according to claim 2, wherein The gluing conveying mechanism includes a first conveyor belt and a second conveyor belt arranged side by side. The first conveyor belt is used to support the first side edge of the cell, and the second conveyor belt is used to support the second side edge of the cell opposite to the first side edge.

4. The cell stringing device according to claim 2, wherein, The gluing component is provided in two groups. Among them, one group of the gluing components is arranged above the gluing conveying mechanism and is used to coat the insulating glue on the first surface of the cell; the other group of the gluing components is arranged below the gluing conveying mechanism and is used to coat the insulating glue on the second surface of the cell.

5. The cell stringing device according to claim 2, wherein: The cell gluing mechanism further includes a cell flipping mechanism arranged on the gluing conveying mechanism, and the cell flipping mechanism is used to flip the cell; The gluing component is provided in two groups, and both groups of the gluing components are arranged above or below the gluing conveying mechanism. One group of the gluing components is used to coat the insulating glue on the first surface of the cell before the cell is flipped, and the other group of the gluing components is used to coat the insulating glue on the second surface of the cell after the cell is flipped; or The gluing component is provided in one group, and the gluing component is arranged above or below the gluing conveying mechanism. When the gluing component moves to the first position, it coats the insulating glue on the first surface of the cell, and when the gluing component moves to the second position behind the first position, it coats the insulating glue on the second surface of the cell.

6. The cell stringing device according to claim 2, characterized in that, The gluing component is a printing device or a spraying device.

7. The cell stringing device according to claim 2, characterized in that, The battery cell gluing mechanism further includes a first positioning mechanism disposed above the gluing conveying mechanism and in front of the gluing assembly, and a second positioning mechanism disposed above the gluing conveying mechanism and behind the gluing assembly. Wherein, the first positioning mechanism is used to position the battery cell to be glued, and the second positioning mechanism is used to position the battery cell after gluing is completed.

8. The cell stringing device according to claim 1, characterized in that, The battery cell stringing device further includes a stringing mechanism disposed above or below the conveying mechanism, and the stringing mechanism is used to heat the battery cell, solder tape and insulating glue so that the solder tape is bonded to the battery cell.

9. The cell stringing device according to claim 1, characterized in that, The battery cell stringing device further includes a string cutting mechanism disposed at the discharging end of the conveying mechanism, and the string cutting mechanism is used to cut the battery string.

10. The cell stringing device according to claim 1, characterized in that, The solder tape stacking mechanism includes a solder tape unwinding mechanism, a solder tape traction mechanism and a solder tape cutting mechanism, wherein: The solder tape unwinding mechanism includes a mounting plate and a plurality of feeding disks disposed on the mounting plate. Each feeding disk supports a roll of solder tape material roll and releases a solder tape. The solder tape traction mechanism synchronously pulls the solder tapes released from each feeding disk onto the conveying mechanism. The solder tape cutting mechanism synchronously cuts each solder tape to stack a group of solder tapes.

11. A method for stringing solar cells, characterized in that, For connecting a plurality of battery cells in series into a battery string, a plurality of sub-grid lines are provided on both the first surface and the second surface of the battery cell. It is characterized in that the battery cell stringing method includes: Coating insulating glue on the areas between adjacent sub-grid lines on the first surface and the second surface of the battery cell. Stacking the glued battery cells and solder tape groups on the conveying mechanism to form a battery string. Wherein, the first half of the i-th group of solder tapes is adhered to the first surface of the i-th battery cell through the insulating glue and is perpendicular to all the sub-grid lines on the first surface, and the second half of the i-th group of solder tapes is adhered to the second surface of the (i + 1)-th battery cell through the insulating glue and is perpendicular to all the sub-grid lines on the second surface, and i is an integer greater than or equal to 1.

12. The method for stringing battery cells according to claim 11, wherein, The coating of insulating glue on the areas between adjacent sub-grid lines on the first surface and the second surface of the battery cell includes: Loading the battery cell onto the gluing conveying mechanism. The gluing conveying mechanism conveys the battery cell to the gluing assembly. The gluing assembly coats insulating glue on the areas between adjacent sub-grid lines on the first surface and the second surface of the battery cell.

13. The method for stringing battery chips according to claim 11, wherein, The coating of insulating glue on the areas between adjacent sub-grid lines on the first surface and the second surface of the battery cell is: Coating a predetermined number of dot-shaped insulating glues in the areas between adjacent sub-grid lines in a discontinuous dotting manner along the extending direction of the sub-grid lines, and ensuring that the dot-shaped insulating glues at corresponding positions in different areas are on the same stringing line, and the stringing line is perpendicular to the sub-grid lines; or Coating continuous linear insulating glue in the areas between adjacent sub-grid lines in a continuous gluing manner along the extending direction of the sub-grid lines.

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