Battery string forming method and device

Abstract

The invention provides a battery string stringing method and device, and the method comprises the steps: sequentially placing battery pieces stored in a feeding mechanism on a feeding conveying belt, so as to enable a first preset number of battery pieces to be arranged on a battery piece pre-arrangement platform according to a preset interval to form sub-battery piece groups, in the conveying process of the battery pieces on the feeding conveying belt, the battery piece stacking mechanism can store the battery pieces on the feeding conveying belt in the period when the sub-battery piece sets are moved away from the battery piece pre-arrangement table, and the battery piece stacking mechanism can sequentially place the battery pieces stored in the battery piece stacking mechanism on the feeding conveying belt in the period when the feeding mechanism is replaced. When the battery pieces in the feeding mechanism are conveyed and the feeding mechanism is replaced, the stacked battery pieces are output by the battery piece stacking mechanism, so that more replacement time of the feeding mechanism is reserved, the replacement condition requirement of the feeding mechanism is reduced, and the production efficiency of battery strings is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic cell string preparation, and in particular to a cell stringing method and device. Background Art

[0002] In the field of photovoltaic module preparation, a battery string is composed of several battery cells connected by welding ribbons. In a BC type battery string, the welding ribbon is only distributed on one side of the battery cell to achieve current conduction between adjacent battery cells.

[0003] BC-type battery strings have the characteristic of no grid lines on the front side, thus eliminating the light energy loss caused by the presence of grid lines on the front side of the battery string in traditional battery strings, maximizing the utilization of the energy of incident photons and improving the light energy conversion efficiency.

[0004] In the existing battery string preparation technology, battery cells are generally loaded through a loading mechanism. The conventional loading mechanism is a flower basket. The battery cells in the flower basket are transported out by a conveyor belt and transported to subsequent processing stations through a battery cell transport unit. During this process, in order to adapt to the production pace, the battery cell output rate of the flower basket is generally required to match the transport rate of the battery cell transport unit.

[0005] In the prior art, after the battery cells in the loading mechanism of the battery cell loading are conveyed, in order to ensure the continuous production of the battery string, it is generally necessary to complete the replacement of the loading mechanism within the conveying interval of the battery cells. The replacement conditions of the loading mechanism are high, which may easily lead to untimely replacement of the loading mechanism during the production process, idling of the battery string production equipment, and reduced production efficiency. Summary of the Invention

[0006] The battery string forming method and device designed in the present invention can overcome the shortcomings of the prior art that after the battery cells in the battery cell feeding mechanism are conveyed, in order to ensure the continuous production of the battery string, the feeding mechanism generally needs to be replaced within the conveying interval of the battery cells. The replacement conditions of the feeding mechanism are high, which can easily lead to untimely replacement of the feeding mechanism during the production process, idling of the battery string production equipment, and reduced production efficiency.

[0007] The object of the present invention is to provide a method for stringing batteries, comprising the following steps:

[0008] a cell loading and pre-arrangement step, wherein the cell storage in the loading mechanism is sequentially placed on the loading conveyor belt so that a first preset number of cell storages can be arranged into sub-cell groups at preset intervals on the cell pre-arrangement table; during the transportation of the cell storages on the loading conveyor belt, the cell stacking mechanism can store the cell storages on the loading conveyor belt while the sub-cell groups are removed from the cell pre-arrangement table to prevent the cell storages continuously outputted from the loading conveyor belt from interfering with the transportation process of the sub-cell groups; and the cell stacking mechanism can also sequentially place the cell storages on the loading conveyor belt while the loading mechanism is replaced;

[0009] a final cell arrangement step of moving the sub-cell groups arranged on the cell pre-arrangement table to a final cell arrangement table to form a final cell group having a second preset number of cells arranged at the preset intervals, wherein the second preset number is greater than the first preset number;

[0010] In the battery string forming step, each battery cell in the final battery cell group is connected using welding ribbons and adhesive films to form a battery string.

[0011] In some embodiments, the battery cell stacking mechanism is located at the battery cell delivery end of the loading conveyor belt.

[0012] In some embodiments, the battery string forming step is performed on a battery string transport platform, the final battery cell group is transported and placed as a whole on the battery string transport platform, and the position of the battery string transport platform corresponds to the position of the film attaching mechanism; or,

[0013] The battery string forming step is performed on the battery cell final arrangement table, and the battery cell final arrangement table can be moved to ensure that its position corresponds to the position of the film attaching mechanism.

[0014] In some embodiments, the battery stringing method further includes:

[0015] The soldering tape and adhesive film preparation step comprises preparing a soldering tape segment group and an adhesive film segment group having a preset number of roots and a target length. The tape and film attaching mechanism can first absorb the adhesive film segment group, and after the adhesive film segment group is partially hot-melted, the soldering tape segment group is pasted together and then attached to the top surface of the final battery cell assembly on the battery string transport platform or the battery cell final arrangement platform.

[0016] In some embodiments, when the battery string transport platform is included, the film attachment mechanism includes a gantry spanning both sides of the battery string transport platform and a film adsorption plate slidably connected to the gantry, and the film adsorption plate can be driven to translate in a direction perpendicular to the battery string conveying direction of the battery string transport platform.

[0017] In some embodiments, the welding tape segment group and the adhesive film segment group are respectively prepared by a welding tape preparation mechanism and an adhesive film preparation mechanism. The prepared welding tape segment group is located on a welding tape placement platform, and the prepared adhesive film segment group is located on an adhesive film placement platform. Both the welding tape placement platform and the adhesive film placement platform are located on the translation path of the film adsorption plate.

[0018] In some embodiments, the film attaching mechanism has two groups arranged at intervals along the battery string conveying direction of the battery string transport platform, and the battery string transport platform, the solder strip preparation mechanism and the adhesive film preparation mechanism are correspondingly provided with two groups, and the two groups of film attaching mechanisms respectively have a gantry spanning the two groups of battery string transport platforms.

[0019] In some embodiments, the battery stringing method further includes:

[0020] In the EL detection step, the battery strings are inspected for hidden cracks using an EL detection mechanism. Battery strings that fail the inspection are placed in a waste frame, and battery strings that pass the inspection are placed in an outgoing conveying mechanism for transport.

[0021] In some embodiments, the carry-out conveyor mechanism includes a first carry-out belt and a second carry-out belt, and the carry-out conveyor mechanism is mounted on the battery string transport platform, and the carry-out conveyor mechanism can switch between a transport state and an anti-interference state. When the carry-out conveyor mechanism is in the transport state, the first carry-out belt and the second carry-out belt are close to each other to form a supporting plane for the battery string. When the carry-out conveyor mechanism is in the anti-interference state, a passage gap is formed between the first carry-out belt and the second carry-out belt, and the width of the gap is greater than the maximum width of the battery string to allow the battery string on the battery string transport platform to be transferred to the detection area of ​​the EL detection mechanism through the passage gap.

[0022] The present invention further provides a battery stringing device for executing the aforementioned battery stringing method, comprising:

[0023] A loading mechanism for storing battery cells to be loaded;

[0024] Loading conveyor belt;

[0025] A cell pre-arrangement station, for arranging the cells transported thereto by the loading conveyor belt into sub-cell groups according to preset intervals;

[0026] A cell stacking mechanism is mounted on the cell delivery end of the loading conveyor belt, capable of storing the cells on the loading conveyor belt while the sub-cell group is being removed from the cell pre-arrangement table to prevent the cells continuously output from the loading conveyor belt from interfering with the handling process of the sub-cell group, and capable of sequentially placing the stored cells on the loading conveyor belt during replacement of the loading mechanism;

[0027] a final cell arrangement station for arranging the sub-cell groups arranged on the cell pre-arrangement station to form a final cell group having a second preset number of cells arranged at the preset intervals;

[0028] The battery string transport platform is used to connect the battery cells in the final battery cell group using welding ribbons and adhesive films to form a battery string.

[0029] The battery string forming method and device of the present invention adopts a battery cell stacking mechanism to store the battery cells on the loading conveyor belt while the sub-battery cell group is moved away from the battery cell pre-arrangement table to prevent the battery cells continuously output on the loading conveyor belt from interfering with the transportation process of the sub-battery cell group. At the same time, during the replacement of the loading mechanism, the battery cells stored therein are placed on the loading conveyor belt in sequence. In this way, during the loading process of the loading mechanism, the loading rate of the loading mechanism can be accelerated, and the excess battery cells can be stacked and cached by the battery cell stacking mechanism. When the battery cells in the loading mechanism are transported and the loading mechanism is replaced, the stacked battery cells can be output by the battery cell stacking mechanism, thereby reserving more time for replacing the loading mechanism, reducing the replacement condition requirements of the loading mechanism, and improving the production efficiency of the battery string. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 1 is a schematic diagram of the steps of a method for stringing batteries in an embodiment of the present invention;

[0031] Figure 2 Schematic diagram of the layout of the battery string device in the embodiment of the present invention (simple schematic diagram).

[0032] In the figure: 100, loading mechanism; 201, loading conveyor belt; 202, battery cell pre-arrangement platform; 203, battery cell stacking mechanism; 204, battery cell transfer arm; 300, battery cell final arrangement platform; 301, battery string transport arm; 400, battery string transport platform; 500, film attaching mechanism; 501, gantry; 502, film adsorption plate; 601, solder ribbon placement platform; 602, solder ribbon feeding mechanism; 701, adhesive film placement platform; 702, adhesive film feeding mechanism; 801, first delivery belt; 802, second delivery belt; 900, EL detection mechanism. DETAILED DESCRIPTION

[0033] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. In the figures, regions and layer thicknesses are exaggerated for clarity. Identical reference numerals in the figures denote identical or similar structures, and thus detailed descriptions thereof will be omitted.

[0034] The described features, structures or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solutions of the present invention may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be employed. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring the various aspects of the present invention.

[0035] The following examples illustrate the battery stringing method and apparatus of the present invention. These examples are only a portion of the embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. All other embodiments devised by persons of ordinary skill in the art without inventive effort are intended to fall within the scope of protection of the present invention.

[0036] Please refer to Figures 1 to 2 According to an embodiment of the present invention, a method for stringing batteries is provided, comprising the following steps:

[0037] In the battery cell loading and pre-arrangement step, a loading robot (not shown in the figure) is used to sequentially place the battery cells stored in the loading mechanism 100 on the loading conveyor belt 201 (specifically, on the battery cell inlet end of the loading conveyor belt 201) so that a first preset number of battery cells can be arranged into sub-battery cell groups according to preset intervals on the battery cell pre-arrangement table 202. For example, the aforementioned battery cell pre-arrangement table 202 may be provided with positioning wheels with corresponding spacings, and the spacing of the positioning wheels is used to achieve positioning of the preset intervals between each battery cell. During the transportation of the battery cells on the loading conveyor belt 201, the battery cell stacking mechanism 203 can store the battery cells on the loading conveyor belt 201 therein during the period when the sub-battery cell group is moved away from the battery cell pre-arrangement table 202 to prevent the battery cells continuously output from the loading conveyor belt 201 from interfering with the transportation process of the sub-battery cell group. The battery cell stacking mechanism 203 can also sequentially place the battery cells stored therein on the loading conveyor belt 201 during the replacement of the loading mechanism 100;

[0038] In the final cell arrangement step, the sub-cell group arranged on the cell pre-arrangement station 202 is transferred to the cell final arrangement station 300 to form a final cell group having a second preset number of cells arranged at preset intervals. The second preset number is greater than the first preset number. The first preset number may be, for example, 2 or more, and the second preset number should be an integer multiple of the first preset number.

[0039] In the battery string forming step, each adjacent battery cell in the final battery cell group is connected with a welding ribbon and an adhesive film to form a battery string.

[0040] In this technical solution, a cell stacking mechanism 203 is used to store the cell stacks on the loading conveyor belt 201 during the period when the sub-cell group is moved from the cell pre-arrangement table 202 to prevent the cell stacking between the loading conveyor belt 201 and the cell pre-arrangement table 202. At the same time, during the replacement of the loading mechanism 100, the cell stacked therein are placed on the loading conveyor belt 201 in sequence. In this way, during the loading process of the loading mechanism 100, the loading rate of the loading mechanism 100 can be accelerated, and the excess cell stacking mechanism 203 can be stacked and cached. When the cell conveyance in the loading mechanism 100 is completed and the loading mechanism 100 is replaced, the cell stacking mechanism 203 can output the stacked cell stacks, thereby reserving more time for replacing the loading mechanism 100 and reducing the replacement condition requirements of the loading mechanism 100.

[0041] The aforementioned cell stacking mechanism 203 can specifically adopt an existing structure that can store the cell in the lower area in a lifting manner and place the stored cell on the loading conveyor belt 201 below in a lowering manner. The cell stacking mechanism 203 can be equipped with a corresponding identification device to be able to identify whether there are cell on the loading conveyor belt 201 in its placement area. When no cell is detected in the placement area, the cell stacking mechanism 203 is controlled to place the cell in the placement area, thereby ensuring the continuous supply of cell on the loading conveyor belt 201. , until battery cells are detected on the placement area, it means that the battery cells of the loading mechanism 100 have been replaced and are supplied normally. At this time, the battery stacking mechanism 203 is controlled to stop placing battery cells in the placement area; in terms of battery cell caching, specifically, when the battery cell stacking mechanism 203 receives the corresponding caching instruction, the battery cell stacking mechanism 203 stores the battery cells being conveyed on the loading conveyor belt 201 one by one in it, so as to prevent the sub-battery cell group on the battery cell pre-arrangement table 202 from being adversely interfered with the transfer of the sub-battery cell group due to the excessively fast loading speed during the process of being transferred to the battery cell final arrangement table 300.

[0042] In some embodiments, the battery cell stacking mechanism 203 is located at the battery cell delivery end of the loading conveyor belt 201. This ensures that when there is no need for the battery cells to enter the subsequent battery cell pre-arrangement table 202, the battery cells transported to the battery cell delivery end position by the loading conveyor belt 201 are cached therein, ensuring that the battery cells transported on the loading conveyor belt 201 will not enter the battery cell pre-arrangement table 202 to cause detriment to the pre-arrangement and transfer positioning of the battery cells.

[0043] In a specific embodiment, the battery string forming step is performed on the battery string transport platform 400, and the final battery cell group is transported as a whole and placed on the battery string transport platform 400, and the position of the battery string transport platform 400 corresponds to the position of the film attaching mechanism (not marked in the figure), that is, the battery string is finally attached with a welding ribbon on the battery string transport platform 400.

[0044] In another specific embodiment, the battery string forming step is performed on the battery cell final arrangement table 300, and the battery cell final arrangement table 300 can be moved to ensure that its position corresponds to the position of the film attaching mechanism. For example, the battery cell final arrangement table 300 has a first position corresponding to the position of the battery cell pre-arrangement table 202 and a second position corresponding to the position of the aforementioned film attaching mechanism. The battery cell final arrangement table 300 is on a slide rail and is driven by corresponding traction or push-pull components to slide and switch between the first position and the second position, thereby realizing material sharing and reducing product design and manufacturing costs.

[0045] In some embodiments, the battery stringing method further comprises:

[0046] The steps of preparing the soldering tape and the adhesive film are as follows: preparing a soldering tape segment group and an adhesive film segment group with a preset number and a target length; the preset number and the target length can be reasonably selected according to the specific production requirements; the film attaching mechanism can first absorb the adhesive film segment group, and after the adhesive film segment group is partially hot-melted, the soldering tape segment group is pasted together and attached to the top surface of the final battery cell assembly on the battery string transport platform 400 or the battery cell final arrangement platform 300.

[0047] In this technical solution, by partially hot-melting the film segment group and utilizing the viscosity formed after hot-melting to stick each welding tape segment and each film segment together (forming a film assembly), it is then attached to the top surface of the battery cell as a whole. There is no need for a complicated film transfer structure, and the attachment process is simple and easy.

[0048] In some embodiments, when a battery string transport platform 400 is included, the film attachment mechanism includes a gantry 501 spanning both sides of the battery string transport platform 400 and a film adsorption plate 502 slidably connected to the gantry 501. The film adsorption plate 502 can be driven to translate in a direction perpendicular to the battery string transport direction of the battery string transport platform 400. The aforementioned film adsorption plate 502 can specifically adopt the relevant structure of a conventional vacuum adsorption plate, and in principle, it is sufficient to reliably adsorb the aforementioned film assembly. Of course, the aforementioned film attachment mechanism is also equipped with a sliding drive module (not shown or labeled in the figure) that can drive the film adsorption plate 502. In another feasible embodiment, at least two sets of film adsorption plates 502 are simultaneously configured in the same film attachment mechanism. Each film adsorption plate 502 can be staggered and controlled to achieve film attachment to the battery cells, thereby improving the preparation efficiency of the battery string.

[0049] In some embodiments, the welding tape segment group and the adhesive film segment group are respectively prepared by a welding tape preparation mechanism (not labeled in the figure) and an adhesive film preparation mechanism (not labeled in the figure). The prepared welding tape segment group is located on the welding tape placement platform 601, and the prepared adhesive film segment group is located on the adhesive film placement platform 701. The welding tape placement platform 601 and the adhesive film placement platform 701 are both located on the translation path (a straight line) of the film adsorption plate 502.

[0050] In this technical solution, the solder tape placement platform 601, the adhesive film placement platform 701 and the film adsorption plate 502 are arranged at intervals in the same direction, which can further simplify the adsorption transfer of the prepared solder tape segments and adhesive film segments by the film adsorption plate 502 in the same linear reciprocating motion, thereby simplifying the structure and control.

[0051] In a specific embodiment, the aforementioned solder tape placement platform 601 is equipped with a heating element, which can heat and increase the temperature of the target position of each solder tape placed thereon. In this way, when the film adsorption plate 502 adsorbs the adhesive film and is transferred and stacked on the solder tape segment, the heated solder tape segment will achieve heat melting of the bottom side of the adhesive film segment and after cooling, the adhesive film and the solder tape form the aforementioned film assembly as a whole.

[0052] In some embodiments, see Figure 2 As shown, the film attaching mechanism has two groups arranged at intervals along the battery string conveying direction of the battery string transport platform 400, and the battery string transport platform 400, the solder strip preparation mechanism and the adhesive film preparation mechanism are correspondingly provided with two groups. The two groups of film attaching mechanisms respectively have a gantry 501 spanning the two groups of battery string transport platforms 400, thereby achieving an improvement in the efficiency of battery string preparation products.

[0053] In some embodiments, the battery string forming method further includes: an EL (Electroluminescence) detection step, using an EL detection mechanism 900 to detect hidden cracks in the battery string, placing battery strings that fail the inspection into a waste sheet frame, and placing battery strings that pass the inspection into a transport mechanism for transport, so as to ensure the quality of the battery string forming.

[0054] In some embodiments, the outgoing conveying mechanism includes a first outgoing conveying belt 801 and a second outgoing conveying belt 802. The outgoing conveying mechanism is mounted on the battery string transport platform 400, and the outgoing conveying mechanism can switch between a transport state and an anti-interference state. When the outgoing conveying mechanism is in the transport state, the first outgoing belt 801 and the second outgoing belt 802 are close to each other to form a supporting plane for the battery string. When the outgoing conveying mechanism is in the anti-interference state, a passage gap is formed between the first outgoing belt 801 and the second outgoing belt 802, and the width of the gap is greater than the maximum width of the battery string to allow the battery string on the battery string transport platform 400 to be transferred to the detection area of ​​the EL detection mechanism 900 through the passage gap.

[0055] In this technical solution, while the transport mechanism transports the qualified battery strings to the target area, it has a switchable transport state and anti-interference state, so it will not cause any disadvantage to the transportation of the battery strings on the battery string transport platform 400 below it.

[0056] According to an embodiment of the present invention, there is further provided a battery stringing device for executing the aforementioned battery stringing method, comprising:

[0057] The loading mechanism 100 is used to store the battery cells to be loaded;

[0058] The loading conveyor belt 201, the battery cells in the loading mechanism 100 can be transferred by the loading robot and placed on the battery cell feeding end of the loading conveyor belt 201;

[0059] The cell pre-arrangement station 202 is used to arrange the cells transported thereto by the loading conveyor belt 201 into sub-cell groups according to preset intervals;

[0060] The cell stacking mechanism 203 is mounted on the cell delivery end of the loading conveyor 201. It can store the cells on the loading conveyor 201 while the sub-cell groups are being removed from the cell pre-arrangement table 202 to prevent the cells continuously output from the loading conveyor 201 from interfering with the handling process of the sub-cell groups. It can also sequentially place the stored cells on the loading conveyor 201 during replacement of the loading mechanism 100.

[0061] The final cell arrangement station 300 is used to arrange the sub-cell groups arranged on the cell pre-arrangement station 202 to form a final cell group having a second preset number of cells arranged at preset intervals. Specifically, the sub-cell groups on the cell pre-arrangement station 202 are transferred as a whole to the final cell arrangement station 300 by the cell transfer arm 204.

[0062] The battery string transport platform 400 is used to connect the battery cells in the final battery cell group with welding ribbons and adhesive films to prepare battery strings. Specifically, the battery string transport arm 301 is used to transport the final battery cell assembly on the battery cell final arrangement table 300 as a whole and place it on the battery string transport platform 400. At this time, the prepared welding ribbon group and adhesive film group are hot-melt-bonded together by a film attaching mechanism, and then attached as a whole to the top surface of the final battery cell group.

[0063] It can be understood that the aforementioned solder strip preparation mechanism also includes conventional structures such as a solder strip feeding mechanism 602 and a solder strip cutting mechanism (not shown in the figure), and the aforementioned adhesive film preparation mechanism also includes conventional structures such as an adhesive film feeding mechanism 702 and an adhesive film cutting mechanism (not shown in the figure), which will not be elaborated here.

[0064] It is easy for those skilled in the art to understand that, under the premise of no conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0065] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A method for stringing batteries, characterized in that: The steps include: a cell loading and pre-arrangement step, wherein the cell stored in the loading mechanism (100) is sequentially placed on the loading conveyor belt (201) so that a first preset number of cell cells can be arranged into sub-cell groups according to preset intervals on the cell pre-arrangement table (202); during the transportation of the cell cells on the loading conveyor belt (201), the cell stacking mechanism (203) can store the cell cells on the loading conveyor belt (201) therein during the period when the sub-cell groups are removed from the cell pre-arrangement table (202) to prevent the cell cells continuously output from the loading conveyor belt (201) from interfering with the transportation process of the sub-cell groups; and the cell stacking mechanism (203) can also sequentially place the cell cells stored therein on the loading conveyor belt (201) during the replacement of the loading mechanism (100); a cell final arrangement step, transporting the sub-cell group arranged on the cell pre-arrangement table (202) to a cell final arrangement table (300) to form a final cell group having a second preset number of cells arranged at the preset intervals, wherein the second preset number is greater than the first preset number; In the battery string forming step, each battery cell in the final battery cell group is connected using welding ribbons and adhesive films to form a battery string.

2. The battery stringing method according to claim 1, characterized in that: The battery cell stacking mechanism (203) is located at the battery cell delivery end of the loading conveyor belt (201).

3. The battery stringing method according to claim 1, characterized in that: The battery string forming step is performed on a battery string transport platform (400), the final battery cell group is transported and placed as a whole on the battery string transport platform (400), and the position of the battery string transport platform (400) corresponds to the position of the film attaching mechanism; or, The battery string forming step is performed on the battery cell final arrangement platform (300), and the battery cell final arrangement platform (300) can be moved to ensure that its position corresponds to the position of the film attaching mechanism.

4. The battery stringing method according to claim 3, characterized in that: Also includes: The steps of preparing the welding tape and the adhesive film include preparing a welding tape segment group and an adhesive film segment group with a preset number of roots and a target length, wherein the film attaching mechanism can first absorb the adhesive film segment group, and after the adhesive film segment group is partially melted, the welding tape segment group is pasted together and then attached to the top surface of the final battery cell assembly on the battery string transport platform (400) or the battery cell final arrangement platform (300).

5. The battery stringing method according to claim 4, characterized in that: When the battery string transport platform (400) is included, the film attaching mechanism includes a gantry (501) spanning both sides of the battery string transport platform (400) and a film adsorption plate (502) slidably connected to the gantry (501), and the film adsorption plate (502) can be driven to translate in a direction perpendicular to the battery string conveying direction of the battery string transport platform (400).

6. The battery stringing method according to claim 5, characterized in that: The welding tape segment group and the adhesive film segment group are prepared by the welding tape preparation mechanism and the adhesive film preparation mechanism respectively. The prepared welding tape segment group is located on the welding tape placement platform (601), and the prepared adhesive film segment group is located on the adhesive film placement platform (701). The welding tape placement platform (601) and the adhesive film placement platform (701) are both located on the translation path of the film adsorption plate (502).

7. The battery stringing method according to claim 5, characterized in that: The film attaching mechanism comprises two groups arranged at intervals along the battery string conveying direction of the battery string transport platform (400), the battery string transport platform (400), the welding strip preparation mechanism and the adhesive film preparation mechanism are correspondingly provided with two groups, and the two groups of film attaching mechanisms respectively have a gantry (501) spanning the two groups of battery string transport platforms (400).

8. The battery stringing method according to claim 1, characterized in that: Also includes: In the EL detection step, an EL detection mechanism (900) is used to detect hidden cracks in the battery string, and the battery strings that fail the detection are placed in a waste sheet frame, and the battery strings that pass the detection are placed in a transport mechanism for transport.

9. The battery stringing method according to claim 8, characterized in that: The transport-out conveying mechanism includes a first transport-out belt (801) and a second transport-out belt (802), and the transport-out conveying mechanism is mounted on the battery string transport platform (400), and the transport-out conveying mechanism can switch between a transport state and an anti-interference state. When the transport-out conveying mechanism is in the transport state, the first transport-out belt (801) and the second transport-out belt (802) are close to each other to form a supporting plane for the battery string. When the transport-out conveying mechanism is in the anti-interference state, a passage gap is formed between the first transport-out belt (801) and the second transport-out belt (802), and the width of the gap is greater than the maximum width of the battery string to allow the battery string on the battery string transport platform (400) to be transferred to the detection area of ​​the EL detection mechanism (900) through the passage gap.

10. A battery string device, characterized in that: A method for stringing batteries according to any one of claims 1 to 9, comprising: A loading mechanism (100) for storing battery cells to be loaded; Loading conveyor belt (201); A cell pre-arrangement table (202) is used to arrange the cell sheets transported by the loading conveyor belt (201) thereon into sub-cell groups according to preset intervals; A cell stacking mechanism (203) is mounted on the cell delivery end of the loading conveyor belt (201), capable of storing the cells on the loading conveyor belt (201) therein during the period when the sub-cell group is removed from the cell pre-arrangement table (202) to prevent the cells continuously output from the loading conveyor belt (201) from interfering with the handling process of the sub-cell group, and capable of sequentially placing the stored cells on the loading conveyor belt (201) during the replacement of the loading mechanism (100); A final battery cell arrangement table (300) is used to arrange the sub-battery cell groups arranged on the battery cell pre-arrangement table (202) thereon to form a final battery cell group having a second preset number of battery cells arranged according to the preset intervals; The battery string transport platform (400) is used to connect the battery cells in the final battery cell group using welding strips and adhesive films to form a battery string.

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