Preparation method of photovoltaic module and processing system of photovoltaic module

Abstract

The invention relates to a preparation method of a photovoltaic module and a processing system of the photovoltaic module, the preparation method of the photovoltaic module is realized through the processing system of the photovoltaic module, the processing system comprises a main body, a pick-and-place mechanism and a turnover mechanism, the preparation method of the photovoltaic module comprises the steps that a battery string is placed on the main body, and the battery string is connected with a bus bar; the taking and placing mechanism places the limiting tool on the battery string, one part of the limiting tool protrudes out of the first edge, and the first edge is the edge, facing the bus bar, of the battery string; the turnover mechanism clamps the bus bar and enables the bus bar to turn over relative to the limiting tool. The turnover mechanism relieves the clamping of the bus bar; and the taking and placing mechanism takes down the limiting tool from the battery string. According to the processing system, the bus bar can be overturned to the backlight surface of the battery piece under the condition that the battery piece is not damaged, the steps needing manual operation are reduced, the automation degree and the production efficiency of photovoltaic module production are improved, and production errors caused by manual operation are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic modules, and in particular to a method for preparing a photovoltaic module and a processing system for the photovoltaic module. Background Art

[0002] Photovoltaic modules can directly convert solar radiation energy into electrical energy, mainly based on the photovoltaic effect of crystalline silicon. That is, when the photons of sunlight are absorbed by semiconductor crystalline silicon, electron-hole pairs are generated. When these electron-hole pairs reach the pn junction composed of p-type crystalline silicon and n-type crystalline silicon, they are separated by the junction electric field to both sides of the pn junction. When an external load is connected, photocurrent is formed and electrical energy is output.

[0003] The production of photovoltaic modules is to use welding strips to weld single cells into strings, arrange the welded cell strings in a certain order, and then weld bus bars for current extraction on the head and tail of the cell string. Since setting the bus bars at the head and tail of the cell string will reduce the area ratio of the cell in the photovoltaic module, the area ratio of the cell in the photovoltaic module can be increased by folding the bus bars to the backlight side of the cell string, but there is currently no tooling for producing this type of photovoltaic module. Summary of the invention

[0004] The present application provides a method for preparing a photovoltaic module and a processing system for a photovoltaic module, which are used to solve the problem of lack of production tooling.

[0005] The embodiment of the present application provides a method for preparing a photovoltaic module, the method for preparing the photovoltaic module is implemented by a processing system for the photovoltaic module, the processing system includes: a main body, a pick-and-place mechanism and a flip mechanism, the method for preparing the photovoltaic module includes:

[0006] Placing a battery string on the main body, wherein the battery string is connected to a bus bar;

[0007] The pick-and-place mechanism places the limiting fixture on the battery string, a portion of the limiting fixture protrudes out of a first edge, and the first edge is an edge of the battery string facing the bus bar;

[0008] The flipping mechanism clamps the bus bar and flips the bus bar relative to the limiting fixture;

[0009] The flipping mechanism releases the clamping of the busbar;

[0010] The pick-and-place mechanism removes the limiting fixture from the battery string.

[0011] In a possible design, the battery string includes: a battery cell and a welding ribbon, wherein the welding ribbon is connected to the battery cell and the bus bar;

[0012] In the step: the flipping mechanism clamps the bus bar and flips the bus bar relative to the limiting fixture, and at least a portion of the welding strip protruding from the first edge is bent into an arc shape.

[0013] In a possible design, the length L1 of the limiting tool protruding from the first edge satisfies: 0.1 mm≤L1≤1.5 mm.

[0014] In a possible design, the width L2 of the limiting tool satisfies: 4mm≤L2≤18mm.

[0015] In a possible design, the difference between the width L2 of the limiting fixture and the width L3 of the busbar satisfies: L2-L3≥1 mm.

[0016] In a possible design, the limiting tool limits the position of one group of battery strings or multiple groups of battery strings.

[0017] In a possible design, the processing system further includes a placement mechanism;

[0018] After the pick-and-place mechanism removes the limit fixture from the battery string, or before the pick-and-place mechanism places the limit fixture on the battery string, the method for preparing the photovoltaic module further includes:

[0019] The placement mechanism places a separator on the battery string so that the separator can be located between the bus bar and the battery string.

[0020] In a possible design, the width L4 of the isolation film is greater than the width L3 of the bus bar.

[0021] In a possible design, the width L4 of the isolation membrane satisfies: 4 mm ≤ L4 ≤ 20 mm, and / or the thickness d1 of the isolation membrane satisfies: 0.05 mm ≤ d1 ≤ 0.3 mm.

[0022] A photovoltaic module processing system provided in an embodiment of the present application is used in the photovoltaic module preparation method described above. The processing system includes: a main body, a pick-up and placement mechanism, a flipping mechanism, a placement mechanism and a control unit. The main body is used to place a battery string, and the control unit controls the operation of the pick-up and placement mechanism, the flipping mechanism and the placement mechanism.

[0023] In this application, the processing system can flip the busbar to the backlight side of the cell without damaging the cell, thereby increasing the area ratio of the cell in the photovoltaic module, thereby improving the photoelectric conversion efficiency of the photovoltaic module. At the same time, the processing system reduces the steps that require manual operation, improves the automation and production efficiency of photovoltaic module production, and also improves the consistency of photovoltaic modules produced, reducing production errors caused by manual operation.

[0024] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the battery string and busbars in this application, wherein part of the busbars are flipped to the backlight side of the battery string;

[0026] Figure 2 This is a schematic diagram of the structure of the photovoltaic module in this application;

[0027] Figure 3 A flow chart of a method for preparing a photovoltaic module provided in this application;

[0028] Figure 4 It is a schematic diagram of the structure of the battery string and the bus bar in the present application, wherein the bus bar is not flipped to the backlight side of the battery string;

[0029] Figure 5 This is a schematic diagram of the structure in which the limiting fixture is placed on the battery string;

[0030] Figure 6 A schematic diagram of the structure of the flip mechanism clamping the busbar;

[0031] Figure 7 A schematic diagram of a portion of the structure where the bus bar is folded to the backlight side of the battery string;

[0032] Figure 8 This is an enlarged view of the partial structure of the limiting fixture placed on the battery string;

[0033] Fig. 9 A flow chart of a method for preparing a photovoltaic module provided in this application;

[0034] Fig.10 A flow chart of a method for preparing a photovoltaic module provided in this application;

[0035] Fig.11 A schematic diagram of a structure in which an isolation film is placed between a bus bar and a battery string;

[0036] Fig.12 This is a schematic diagram of the processing system provided in this application.

[0037] Reference numerals:

[0038] 1- Photovoltaic modules;

[0039] 11-battery string;

[0040] 111-battery cell;

[0041] 111a - first edge;

[0042] 112-welding strip;

[0043] 12-bus bar;

[0044] 13- isolation film;

[0045] 14-cover plate;

[0046] 15-encapsulation layer;

[0047] 2- Processing system;

[0048] 21- Subject;

[0049] 22-pick-and-place mechanism;

[0050] 23- flip mechanism;

[0051] 24-Placing mechanism;

[0052] 3-Limiting tooling.

[0053] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0054] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0055] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0056] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0057] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0058] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0059] Figure 1 A photovoltaic module 1 is shown, such as Figure 1 As shown, the photovoltaic module 1 includes multiple groups of battery strings 11 and bus bars 12, the head pieces and tail pieces of the battery strings 11 are respectively connected to the bus bars 12, and the edge of the battery string 11 facing the bus bars 12 is the first edge 111a. The battery string 11 includes battery cells 111 and welding strips 112, and adjacent battery cells 111 are electrically connected through multiple welding strips 112. Part of the welding strips 112 on the head pieces and tail pieces of the battery string 11 protrude from the first edge 111a, and the part of the welding strips 112 protruding from the first edge 111a is connected to the bus bar 12 to achieve the connection between the battery string 11 and the bus bar 12. Among them, the current generated by the battery cell 111 flows to the bus bar 12 through the welding strips 112, and the bus bar 12 collects the current and then conducts the current.

[0060] Furthermore, the bus bar 12 connected to the head piece and the tail piece of the battery string 11 does not overlap with the battery cell 111 in the thickness direction of the battery string 11, and there is a certain gap between the bus bar 12 and the battery cell 111, so that there is room for improvement in the area ratio of the battery cell 111 in the photovoltaic module 1.

[0061] In order to increase the area ratio of the battery cell 111 in the photovoltaic module 1 and thereby improve the photoelectric conversion efficiency of the photovoltaic module 1, the bus bar 12 can be flipped to the backlight side of the battery cell 111 so that the bus bar 12 overlaps with the battery cell 111 in the thickness direction of the battery string 11. At the same time, the size of the battery cell 111 is increased accordingly to fill the area of ​​the original bus bar 12 and the gap between the bus bar 12 and the battery cell 111.

[0062] Specifically, Figure 1 and Figure 4As shown, when the bus bar 12 is flipped, the soldering strip 112 connected to the light-receiving surface of the battery cell 111 may be bent along with the flipping of the bus bar 12, that is, the soldering strip 112 extends from the light-receiving surface of the battery cell 111 to the backlight surface. Alternatively, the soldering strip 112 connected to the backlight surface of the battery cell 111 may be bent along with the flipping of the bus bar 12, that is, the soldering strip 112 only extends on the backlight surface of the battery cell 111.

[0063] In addition, if Figure 2 As shown, the photovoltaic module 1 further includes: a cover plate 14 and an encapsulation layer 15, wherein the encapsulation layer 15 is used to cover the surface of the battery string 11, and the cover plate 14 is used to cover the surface of the encapsulation layer 15 away from the battery string 11. The cover plate 14, the encapsulation layer 15 and the battery string 11 can be pressed in a certain order through a lamination process to obtain a laminated assembly, and then a frame can be installed on the laminated assembly to form the photovoltaic module 1 for easy transportation and use.

[0064] The present application provides a method for preparing a photovoltaic module 1, and the method for preparing the photovoltaic module 1 is implemented by a processing system 2 of the photovoltaic module 1. The processing system 2 includes: a main body 21, a pick-and-place mechanism 22, and a flip mechanism 23.

[0065] like Figure 3 As shown, the preparation method of the photovoltaic module 1 includes:

[0066] S1: placing the battery string 11 on the main body 21 , with the bus bar 12 connected to the battery string 11 .

[0067] In this step, if Figure 4 As shown, along the extension direction of the welding strip 112, the busbars 12 are located on both sides of the battery string 11. The battery string 11 is placed on the main body 21, and the battery string 11 is stationary relative to the main body 21, so that the battery string 11 is easy to process.

[0068] S2: The pick-and-place mechanism 22 places the limiting fixture 3 on the battery string 11 , and a portion of the limiting fixture 3 protrudes out of the first edge 111 a .

[0069] S3: The turning mechanism 23 clamps the bus bar 12 and turns the bus bar 12 relative to the limiting tool 3 .

[0070] In step S2 and step S3, if Figure 5 As shown, the limiting tool 3 presses the battery cell 111 to limit and fix the battery cell. Figure 6 and Figure 7As shown, the flipping mechanism 23 tightly clamps the bus bar 12, and can drive the bus bar 12 to flip to the backlight side of the battery cell 111. A portion of the limiting fixture 3 protrudes from the first edge 111a, so that when the bus bar 12 is folded to the backlight side of the battery cell 111, the bus bar 12 will not contact the first edge 111a, thereby preventing the bus bar 12 from damaging the battery cell 111. The flipping angle of the bus bar 12 is 180 degrees or close to 180 degrees.

[0071] Specifically, during the process of the busbar 12 being flipped relative to the limiting fixture 3, the portion of the soldering ribbon 112 pressed by the limiting fixture 3 does not bend, so that when the soldering ribbon 112 on the light-receiving surface of the cell 111 is flipped to the backlight surface of the cell 111 along with the busbar 12, the soldering ribbon 112 is prevented from contacting the first edge 111a, causing hidden cracks at the edge of the cell 111. Therefore, by providing the limiting fixture 3, the production yield of the photovoltaic module 1 can be improved, and the cell 111 can be prevented from being damaged during the processing.

[0072] S4 : The turning mechanism 23 releases the clamping of the bus bar 12 .

[0073] In this step, after the turning mechanism 23 releases the clamping of the bus bar 12, the bus bar 12 remains located on the backlight side of the battery cell 111. The turning mechanism 23 may be a mechanical arm capable of clamping an object.

[0074] S5: the pick-and-place mechanism 22 removes the limiting tool 3 from the battery string 11 .

[0075] In this embodiment, if Figure 3 As shown, the processing system 2 can flip the bus bar 12 to the backlight side of the cell 111 without damaging the cell 111, thereby increasing the area ratio of the cell 111 in the photovoltaic module 1, and further improving the photoelectric conversion efficiency of the photovoltaic module 1. At the same time, the processing system 2 reduces the steps that require manual operation, improves the automation level and production efficiency of the photovoltaic module 1 production, and also improves the consistency of the photovoltaic modules 1 produced, reducing the production errors caused by manual operation.

[0076] Further, such as Figure 7 As shown, in step S3: the flipping mechanism 23 clamps the bus bar 12 and flips the bus bar 12 relative to the limiting tool 3, at least a portion of the welding strip 112 protruding from the first edge 111a is bent into an arc shape, and the arc-shaped welding strip 112 does not have a sharp portion, and is not easy to cause damage to other parts of the photovoltaic module 1. At the same time, the arc-shaped welding strip 112 can reduce the influence of the bending of the welding strip 112 on the connection reliability between the welding strip 112 and the battery cell 111, and reduce the separation of the welding strip 112 and the battery cell 111.

[0077] Specifically, Figure 8As shown, the length L1 of the limiting tool 3 protruding from the first edge 111a satisfies: 0.1mm≤L1≤1.5mm. For example, the length L1 of the limiting tool 3 protruding from the first edge 111a can be: 0.1mm, 0.2mm, 0.3mm, 0.5mm, 0.8mm, 0.9mm, 1.0mm, 1.2mm, 1.5mm, etc.

[0078] The length L1 of the stopper 3 protruding from the first edge 111a should not be too large or too small. If the length L1 of the stopper 3 protruding from the first edge 111a is too small (for example, less than 0.1 mm), when the soldering strip 112 on the light-receiving surface of the cell 111 is flipped to the backlight surface of the cell 111 along with the bus bar 12, it is not possible to effectively avoid the contact between the soldering strip 112 and the bus bar 12 and the first edge 111a, which can easily cause hidden cracks in the cell 111; if the length L1 of the stopper 3 protruding from the first edge 111a is too large (for example, greater than 1.5 mm), the area proportion of the cell 111 in the photovoltaic module 1 will be reduced, and the photoelectric conversion efficiency of the photovoltaic module 1 cannot be effectively improved. Therefore, the length L1 of the stopper 3 protruding from the first edge 111a should be selected within an appropriate range.

[0079] Specifically, Figure 8 As shown, the width L2 of the limiting fixture 3 satisfies: 4mm≤L2≤18mm. The width of the limiting fixture 3 refers to the size of the limiting fixture 3 in the extension direction of the welding strip 112. For example, the width L2 of the limiting fixture 4 can be: 4mm, 5mm, 8mm, 10mm, 12mm, 15mm, 17mm, 18mm, etc.

[0080] The width L2 of the limiting fixture 3 should not be too long or too short. If the width L2 of the limiting fixture 3 is too short (for example, shorter than 4 mm), the limiting fixture 3 is easy to shake relative to the battery cell 111, and it is difficult to play a good limiting and fixing role, and it is difficult for the pick-and-place mechanism 22 to grasp; if the width L2 of the limiting fixture 3 is too long (for example, longer than 18 mm), the weight of the limiting fixture 3 increases, which also increases the difficulty of the pick-and-place mechanism 22 to grasp. Therefore, the width L2 of the limiting fixture 3 should be selected within an appropriate range.

[0081] More specifically, Figure 8 As shown, the difference between the width L2 of the limiting fixture 3 and the width L3 of the busbar 12 satisfies: L2-L3≥1mm. The width of the busbar 12 refers to the dimension of the busbar 12 in the extension direction of the welding strip 112. For example, the difference L2-L3 between the width L2 and the width L3 can be: 1mm, 1.2mm, 1.3mm, 1.5mm, 1.8mm, 2.0mm, etc.

[0082] The difference between the width L2 of the limiting fixture 3 and the width L3 of the busbar 12 should not be too small. If the difference L2-L3 is too small (for example, less than 1 mm), the limiting fixture 3 may not be able to prevent the busbar 12 or the flip mechanism 23 from contacting the battery cell 111, and there is a risk of hidden cracks in the battery cell 111. Therefore, the width L2 of the limiting fixture 3 and the width L3 of the busbar L3 should be selected within an appropriate range.

[0083] In addition, the thickness d2 of the bus bar 12 is generally between 0.05 mm and 0.3 mm.

[0084] Optionally, the limiting fixture 3 limits one group of battery strings 11 or multiple groups of battery strings 11. When the limiting fixture 3 only limits one group of battery strings 11, the length of the limiting fixture 3 is close to the length of a battery cell 111; when the limiting fixture 3 limits multiple groups of battery strings 11, the length of the limiting fixture 3 is close to the total length of the multiple battery cells 111 it limits. Among them, the length of the limiting fixture 3 refers to the size of the limiting fixture 3 in the direction in which the vertical welding strip 112 extends, and the length of the battery cell 111 refers to the size of the battery cell 111 in the direction in which the vertical welding strip 112 extends.

[0085] Optionally, the limiting tool 3 is a hard plastic plate.

[0086] In a specific embodiment, the processing system 2 further includes a placement mechanism 24. Fig. 9 and Fig.11 As shown, in step S5: after the pick-and-place mechanism 22 removes the limiting tool 3 from the battery string 11, the method for preparing the photovoltaic module 1 further includes:

[0087] S6 : the placement mechanism 24 places the separator 13 on the battery string 11 so that the separator 13 can be located between the bus bar 12 and the battery string 11 .

[0088] In this step, the isolation film 13 can separate the bus bar 12 and the battery cell 111. Placing the isolation film 13 by the placement mechanism 24 can reduce the number of manual operations and improve the automation and production efficiency of the photovoltaic module 1 production.

[0089] In another specific embodiment, Fig.10 and Fig.11 As shown, in step S2: before the pick-and-place mechanism 22 places the limiting tool 3 on the battery string 11, the preparation method of the photovoltaic module 1 further includes:

[0090] S6 : the placement mechanism 24 places the separator 13 on the battery string 11 so that the separator 13 can be located between the bus bar 12 and the battery string 11 .

[0091] In this step, the isolation film 13 may be placed first and then the limiting tool 3 , so that the isolation film 13 can also play a role in protecting the battery cell 111 to a certain extent during the process of flipping the bus bar 12 .

[0092] Specifically, Fig.11 As shown, the width L4 of the isolation film 13 is greater than the width L3 of the bus bar 12 , so that the isolation film 13 can completely block the contact between the bus bar 12 and the battery cell 111 , preventing the bus bar 12 or other structures from damaging the battery cell 111 .

[0093] Specifically, the material of the isolation film 13 may be polyethylene terephthalate (PET).

[0094] Specifically, Fig.11 As shown, the width L4 of the isolation film 13 satisfies: 4mm≤L4≤20mm. For example, the width L4 of the isolation film 13 may be: 4mm, 6mm, 8mm, 10mm, 15mm, 18mm, 20mm, etc.

[0095] The width L4 of the isolation film 13 should not be too large or too small. If the width L4 of the isolation film 13 is too small (e.g., less than 4 mm), it is difficult to meet the requirement that the width L4 of the isolation film 13 is greater than the width L3 of the bus bar 12, so that the isolation film 13 cannot effectively separate the bus bar 12 and the battery cell 111; if the width L4 of the isolation film 13 is too large (e.g., greater than 20 mm), the cost of the isolation film 13 will increase, and thus the production cost of the photovoltaic module 1 will increase. Therefore, the width L4 of the isolation film 13 should be selected within an appropriate range.

[0096] Specifically, the thickness d1 of the isolation film 13 satisfies: 0.05 mm ≤ d1 ≤ 0.3 mm. For example, the thickness d1 of the isolation film 13 may be 0.05 mm, 0.08 mm, 0.1 mm, 0.15 mm, 0.18 mm, 0.2 mm, 0.23 mm, 0.26 mm, 0.3 mm, etc.

[0097] The thickness d1 of the isolation film 13 should not be too large or too small. If the thickness d1 of the isolation film 13 is too large (for example, greater than 0.3 mm), on the one hand, the cost of the isolation film 13 will increase, and on the other hand, the thickness d1 of the isolation film 13 may be greater than the distance between the bus bar 12 and the battery cell 111 after flipping, resulting in the isolation film 13 being difficult to place between the bus bar 12 and the battery cell 111, or changing the position of the bus bar 12 after flipping; if the thickness d1 of the isolation film 13 is too small (for example, less than 0.05 mm), the strength and reliability of the isolation film 13 are reduced, the isolation film 13 is easily damaged by external forces, and cannot effectively separate the bus bar 12 and the battery cell 111.

[0098] In a specific embodiment, the processing system 2 further includes a welding mechanism, and in step S1: the battery string 11 is placed in the main body 21, and the bus bar 12 is connected to the battery string 11. After the battery string 11 is placed in the main body 21, the bus bar 12 can be placed at the head and tail of the battery string 11, and then the bus bar 12 is welded to the head and tail of the battery string 11 by the welding mechanism. The welding method of the welding mechanism can be any one of a laser method, an infrared heating method, or a mechanical hot pressing method.

[0099] The present application embodiment provides a processing system 2 of a photovoltaic module 1, such as Fig.12 As shown, the processing system 2 is used in the preparation method of the above-mentioned photovoltaic module 1, and the processing system 2 includes: a main body 21, a pick-up and placement mechanism 22, a flipping mechanism 23, a placement mechanism 24 and a control unit. The main body 21 is used to place the battery string 11, and the control unit controls the operation of the pick-up and placement mechanism 22, the flipping mechanism 23 and the placement mechanism 24.

[0100] In this embodiment, if Fig.12 As shown, the pick-up and placement mechanism 22, the flipping mechanism 23 and the placement mechanism 24 are arranged near the main body 21, so as to facilitate the operation of the battery string 11 and the bus bar 12 on the main body 21. The pick-up and placement mechanism 22, the flipping mechanism 23 and the placement mechanism 24 are all connected to the control unit, and the control unit controls the pick-up and placement mechanism 22, the flipping mechanism 23 and the placement mechanism 24 to work in an orderly manner, so that the production efficiency of the photovoltaic module 1 is high.

[0101] The pick-and-place mechanism 22 is a mechanical arm with a clamp or other structure capable of performing a pick-and-place operation. The flipping mechanism 23 is a structure capable of clamping the busbar 12 and driving the busbar 12 to flip. The placement mechanism 24 is a mechanical arm with a clamp or other structure capable of performing a placement operation.

[0102] Furthermore, since the operations of the pick-up and placement mechanism 22 and the placement mechanism 24 are similar, they can be simplified into one mechanism. For example, the pick-up and placement mechanism 22 is used to implement the three operations of placing the limiting tool 3 on the battery string 11, removing the limiting tool 3 from the battery string 11, and placing the isolation membrane 13 on the battery string 11.

[0103] In addition, when the bus bar 12 needs to be welded to the head and tail of the battery string 11, the processing system 2 also includes a welding mechanism, and the welding structure is also connected to the control unit, and the control unit can control the operation of the welding structure.

[0104] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for preparing a photovoltaic module, It is characterized in that The method for preparing the photovoltaic module (1) is implemented by a processing system (2) for the photovoltaic module (1), wherein the processing system (2) comprises: a main body (21), a pick-and-place mechanism (22) and a flip mechanism (23), and the method for preparing the photovoltaic module (1) comprises: Placing a battery string (11) on the main body (21), wherein the battery string (11) is connected to a bus bar (12); The pick-and-place mechanism (22) places the limiting fixture (3) on the battery string (11), a portion of the limiting fixture (3) protrudes from a first edge (111a), and the first edge (111a) is an edge of the battery string (11) facing the bus bar (12); The flipping mechanism (23) clamps the bus bar (12) and flips the bus bar (12) relative to the limiting tool (3); The flipping mechanism (23) releases the clamping of the busbar (12); The pick-and-place mechanism (22) removes the position-limiting tool (3) from the battery string (11).

2. The method for preparing a photovoltaic module according to claim 1, It is characterized in that The battery string (11) comprises: a battery cell (111) and a welding strip (112), wherein the welding strip (112) is connected to the battery cell (111) and the bus bar (12); In the step: the flipping mechanism (23) clamps the bus bar (12) and flips the bus bar (12) relative to the limiting tool (3), and at least a portion of the welding strip (112) protruding from the first edge (111a) is bent into an arc shape.

3. The method for preparing a photovoltaic module according to claim 1, It is characterized in that The length L1 of the limiting tool (3) protruding from the first edge (111a) satisfies: 0.1 mm≤L1≤1.5 mm.

4. The method for preparing a photovoltaic module according to claim 1, It is characterized in that The width L2 of the limiting tool (3) satisfies: 4mm≤L2≤18mm.

5. The method for preparing a photovoltaic module according to claim 1, It is characterized in that The difference between the width L2 of the limiting tool (3) and the width L3 of the busbar (12) satisfies: L2-L3≥1mm.

6. The method for preparing a photovoltaic module according to claim 1, It is characterized in that The position limiting tool (3) limits the position of one group of battery strings (11) or multiple groups of battery strings (11).

7. The method for preparing a photovoltaic module according to any one of claims 1 to 6, It is characterized in that The processing system also includes a placement mechanism (24); After the step of: the pick-up and placement mechanism (22) removes the limiting fixture (3) from the battery string (11), or before the step of: the pick-up and placement mechanism (22) places the limiting fixture (3) on the battery string (11), the method for preparing the photovoltaic module (1) further comprises: The placement mechanism (24) places the isolation film (13) on the battery string (11) so that the isolation film (13) can be located between the bus bar (12) and the battery string (11).

8. The method for preparing a photovoltaic module according to claim 7, It is characterized in that The width L4 of the isolation film (13) is greater than the width L3 of the bus bar (12).

9. The method for preparing a photovoltaic module according to claim 7, It is characterized in that The width L4 of the isolation film (13) satisfies: 4 mm ≤ L4 ≤ 20 mm, and / or the thickness d1 of the isolation film (13) satisfies: 0.05 mm ≤ d1 ≤ 0.3 mm.

10. A photovoltaic module processing system, It is characterized in that The processing system (2) is used in the method for preparing a photovoltaic module according to any one of claims 1 to 9, and the processing system (2) comprises: a main body (21), a pick-up and placement mechanism (22), a flipping mechanism (23), a placement mechanism (24) and a control unit, wherein the main body (21) is used to place a battery string (11), and the control unit controls the operation of the pick-up and placement mechanism (22), the flipping mechanism (23) and the placement mechanism (24).

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