Welding device of photovoltaic module and photovoltaic module production system

Abstract

The utility model is applicable to the technical field of solar cell production, and provides a photovoltaic module welding device and a photovoltaic module production system.The photovoltaic module welding device comprises a scribing and coating mechanism, a sheet placing mechanism, a belt placing mechanism and a welding mechanism which are sequentially arranged; the scribing and coating mechanism comprises a first coating part for coating first insulating glue on the original battery piece and a scribing part for cutting the original battery piece into a plurality of battery pieces; the battery piece placing mechanism is used for arranging a plurality of battery pieces in a full-page manner; the strip placing mechanism is used for placing a plurality of welding strips and a plurality of bus bars on the battery piece bottom plate, and the welding strips and the bus bars correspond to welding points of the battery pieces in position when being placed; the welding mechanism is used for welding the welding strips, the bus bars and the welding points. The plurality of battery pieces are directly arranged and then welded to form the battery string array, so that the length of the welding device is reduced, and the welding efficiency is also greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar cell production, and in particular relates to a photovoltaic component welding device and a photovoltaic component production system. Background Art

[0002] The production process of photovoltaic modules includes multiple links, which can be roughly divided into welding, stacking, lamination and lamination post-processing. Different links use corresponding equipment. The existing factory is divided into welding area A, stacking area B, lamination curing area C, and lamination post-processing area D (including framing, testing and packaging) according to different links.

[0003] In the existing welding area A, multiple battery cells are first arranged and welded into battery strings, and then multiple battery strings are welded into a battery string array. It is necessary to set up two front and rear layout devices and two front and rear welding devices, which are relatively long, resulting in the length of welding area A reaching more than 44m.

[0004] In order to meet production capacity requirements, multiple devices are needed to form multi-row production lines. The length of welding area A is too long, resulting in a longer overall length of the production line and a larger area occupied by the production line.

[0005] Therefore, a new technology is needed to solve the problem that the production system of photovoltaic modules in the prior art occupies too large an area. Utility Model Content

[0006] The utility model provides a welding device for a photovoltaic module, aiming to solve the problem that the production system of the photovoltaic module in the prior art occupies too large an area.

[0007] The utility model is realized in this way: a photovoltaic module welding device comprises a scribing and coating mechanism, a sheet swinging mechanism, a belt swinging mechanism and a welding mechanism which are arranged in sequence;

[0008] The scribing and coating mechanism comprises a first coating part for coating a first insulating glue on a battery original sheet and a scribing part for cutting the battery original sheet into a plurality of battery sheets;

[0009] The swinging sheet mechanism is used to arrange the plurality of battery sheets in an entire page;

[0010] The belt swing mechanism is used to place a plurality of welding belts and a plurality of bus bars on the battery cell bottom plate, and the welding belts and the bus bars are placed corresponding to the welding point positions of the battery cell;

[0011] The welding mechanism is used to weld the welding strip, the bus bar, and the welding point.

[0012] Optionally, the welding device further comprises a heating mechanism;

[0013] The heating mechanism is used to heat the battery cell bottom plate and is arranged between the swinging sheet mechanism and the swinging belt mechanism.

[0014] Optionally, the belt swing mechanism includes a busbar placement component and a welding belt placement component;

[0015] The busbar placement assembly is used to place the busbars;

[0016] The welding strip placement assembly is used to place the welding strips.

[0017] Optionally, the busbar placement assembly includes a glue dispensing structure and a busbar placement structure which are sequentially arranged;

[0018] The glue dispensing structure is used to apply glue at the location where the busbar needs to be placed;

[0019] The busbar placement structure is used to place the busbar at a position where the adhesive is applied.

[0020] Optionally, the welding strip placement assembly includes a glue coating structure and a welding strip placement structure;

[0021] The glue coating structure is used to apply glue on the welding strip;

[0022] The soldering ribbon placement structure is used to place the soldering ribbon coated with adhesive on the battery cell bottom plate.

[0023] Optionally, the welding mechanism comprises a bearing portion, a light-transmissive flexible layer and a laser welding portion;

[0024] The bearing part has a bearing surface for supporting the battery cell bottom plate on which the battery cell, the welding strip, and the bus bar are placed. The flexible layer has a first state of being placed on the bearing surface and a second state of being away from the bearing surface. When the flexible layer is in the first state, the flexible layer cooperates with the bearing surface to form a closed space that wraps the battery cell, the welding strip, the bus bar, and the battery cell bottom plate. The bearing part is provided with a vacuum channel that conducts and connects the bearing surface and an external vacuum device.

[0025] The laser welding part is located above the flexible layer and welds the welding strip, the bus bar and the battery cell bottom plate in the enclosed space to form the battery string array.

[0026] Optionally, the welding device further comprises a battery original sheet loading mechanism for conveying a plurality of battery original sheets to the dicing and coating mechanism.

[0027] Optionally, the welding device further comprises a laser marking machine for marking the battery string array.

[0028] Optionally, it comprises any of the photovoltaic module welding devices described above.

[0029] The beneficial effect achieved by the utility model is that, since the slicing and coating mechanism, the swinging mechanism, the swinging belt mechanism and the welding mechanism are sequentially arranged in the welding device, the welding device can directly arrange and weld a plurality of battery cells to form a battery string array, so that the length of the welding device can be reduced and the welding efficiency can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional structural schematic diagram of a welding device provided in an embodiment of the utility model;

[0031] Figure 2 It is a schematic diagram of the three-dimensional structure of the welding device provided by the embodiment of the utility model in another direction;

[0032] Figure 3 It is a plan view of a welding device provided by an embodiment of the utility model;

[0033] Figure 4 It is a schematic diagram of dicing provided by an embodiment of the utility model;

[0034] Figure 5 is a schematic diagram of a battery string array provided by an embodiment of the utility model;

[0035] Figure 6 yes Figure 5 The enlarged view of Figure E;

[0036] Figure 7 It is a schematic diagram of a flexible layer forming a closed space provided by an embodiment of the utility model;

[0037] Figure 8 It is a schematic diagram of welding after the flexible layer forms a closed space according to an embodiment of the utility model;

[0038] Fig. 9 It is a schematic diagram of the laser marking machine provided in the embodiment of the utility model when performing marking.

[0039] Description of reference numerals:

[0040] 100, welding device; 110, dicing coating mechanism; 120, swinging mechanism; 130, swinging belt mechanism; 131, bus bar placement assembly; 1311, glue dispensing structure; 1312, bus bar placement structure; 13121, bus bar storage unit; 13122, bus bar pulling unit; 13123, bus bar placement unit; 132, welding belt placement assembly; 1321, glue coating structure; 13211, welding belt storage unit; 13212, glue coating pool; 1322, welding strip placement structure; 13221, welding strip pulling part, 13222, welding strip placement part; 140, welding mechanism; 141, bearing part; 1411, supporting surface; 1412, vacuum channel; 142, flexible layer; 143, laser welding part; 150, heating mechanism; 160, laser marking machine; 170, main conveyor belt; 180, auxiliary conveyor belt; 190, battery original sheet feeding mechanism; 1100, screen printing machine;

[0041] 200, battery cell; 210, battery string array; 211, battery cell;

[0042] 300, solder strip; 400, bus bar; 500, battery cell base plate. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. In addition, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0044] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "left", "right", "horizontal", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0049] Since the welding device of the utility model is provided with the scribing and coating mechanism, the swinging mechanism, the swinging belt mechanism and the welding mechanism in sequence, the welding device can directly arrange and weld a plurality of battery cells to form a battery string array, so that the length of the welding device can be reduced and the welding efficiency can be greatly improved.

[0050] Embodiment 1

[0051] Reference Figures 1 to 3 In this embodiment, the welding device 100 includes a scribing and coating mechanism 110, a swinging mechanism 120, a swinging belt mechanism 130 and a welding mechanism 140 which are arranged in sequence;

[0052] The scribing and coating mechanism 110 includes a first coating part for coating the first insulating glue on the battery original sheet 200 and a scribing part for cutting the battery original sheet 200 into a plurality of battery sheets 211;

[0053] The sheet swinging mechanism 120 is used to arrange the multiple battery sheets 211 in a whole page;

[0054] The belt swing mechanism 130 is used to place multiple welding belts and multiple bus bars on the battery cell bottom plate 500 at one time, and the welding belts and bus bars are placed corresponding to the welding point positions of the battery cell 211;

[0055] The welding mechanism 140 is used to weld the welding strips, bus bars and welding points.

[0056] Reference Figure 4 The battery cell 200 is a large complete sheet battery. In the actual production process, it needs to be divided and disconnected into a plurality of battery cells 211 , and then these battery cells 211 are transported to be laid out and welded to form a battery string array 210 .

[0057] Before dividing the battery cell 200, the first coating unit is used to apply insulating glue to the non-welding area on the battery cell 200 to avoid short circuits during subsequent welding. Specifically, the insulating glue is UV insulating glue, which is irradiated with UV light after coating to solidify the UV insulating glue. Specifically, the first coating unit can be a screen printer 1100, which is used to print and apply insulating glue directly on the battery cell 200.

[0058] After the insulating glue is cured, the battery cell 200 is transported to the dicing unit, which can use lasers to cut and slice the battery cell 211 horizontally and vertically. It can be understood that the dicing blade (laser head) is installed on the translation mechanism, which can be translated horizontally, vertically and vertically, and cooperate with the conveying device to divide the battery cell 200 into multiple regular battery cells 211. Specifically, the dicing unit can use a conventional dicing machine.

[0059] The swing mechanism 120 is used to layout multiple battery cells 211. The swing mechanism 120 arranges multiple battery cells 211 in sequence on the battery cell base plate 500 according to the layout design position of the battery cells 211. Among them, the battery cell base plate 500 is used to carry the battery cells 211. The swing mechanism 120 can be a robotic arm, which layouts the battery cells 211 by grabbing the robotic arm, or it can be a telescopic mechanism with a track, which telescopes and grabs the battery cells 211 on a fixed track to layout, or it can be an XYZ three-axis movable type, and the swing mechanism 120 can slide in the XYZ three directions to move the battery cells 211, and then return to arrange the battery cells 211.

[0060] Specifically, in this embodiment, the swing mechanism 120 includes two robotic arms, and the ends of the robotic arms have multiple suction cups, which can absorb the battery cells 211 so as to move the battery cells 211 to a designated position for arrangement. In one embodiment, the two robotic arms are arranged opposite to each other, and a main conveyor belt 170 is arranged between the two robotic arms for conveying the battery cell base plate 500. Auxiliary conveyor belts 180 are arranged on opposite sides of the two robotic arms for conveying the diced battery cells 211 to the grasping range of the robotic arms. The two robotic arms respectively transport the battery cells 211 from the auxiliary conveyor belts 180 on both sides to the battery cell base plate 500 for arrangement. After each row is arranged, the main conveyor belt 170 conveys the length of a row of battery cells 211 forward, and then continues to arrange the next row of battery cells 211.

[0061] Reference Figures 1 to 3 , Figure 5 and Figure 6 , the swinging belt mechanism 130 then places multiple bus bars on the battery cell 211, and then places multiple welding strips on the battery cell 211. The swinging belt mechanism 130 can grab multiple bus bars at a time. After these bus bars have been arranged in the corresponding intervals and sequence, they are grabbed by the swinging belt mechanism 130 at one time and then placed on the battery cell bottom plate 500. The position of the bus bars can be placed well, and the bus bars correspond to the positions of the welding strip points on the battery cell 211, so that the bus bars and the welding points can be welded together in the subsequent welding. Correspondingly, the welding strips are also made in the same way. The swinging machine can grab multiple welding strips at a time. After these welding strips have been arranged in the corresponding intervals and sequence, they are grabbed by the swinging belt mechanism 130 and then placed on the battery cell bottom plate 500. The position of the welding strips can be placed well, and the welding strips correspond to the positions of the welding strip points on the battery cell 211, so that the welding strips can be welded together in the subsequent welding.

[0062] After the battery cells 211, bus bars and welding strips are arranged, they are continuously transported to the welding mechanism 140, where the welding strips, bus bars and welding points of the battery cells 211 are welded together to complete the welding of the battery string array 210. The welding mechanism 140 may be a laser welding device or a welding robot.

[0063] Embodiment 2

[0064] Reference Figures 1 to 3 On the basis of the first embodiment, the welding device 100 further includes a heating mechanism; the heating mechanism is used to heat the battery cell bottom plate 500 and is arranged between the swinging sheet mechanism 120 and the swinging belt mechanism 130.

[0065] The battery cell base plate 500 is an insulating material, and is mostly made of EVA / POE or other adhesive films that become sticky after heating. The heating mechanism is arranged between the swinging mechanism 120 and the swinging belt mechanism 130. When the battery cell 211 completes the swinging, the battery cell base plate 500 carrying the battery cell 211 is heated by the heating mechanism, and the battery cell base plate 500 becomes sticky, so that the battery cell 211 is adhered to the battery cell base plate 500, so as to avoid the position of the battery cell 211 sliding and offsetting from the position of the welding point during the process of conveying the battery cell base plate 500 to the next process, thereby affecting the quality of the final product.

[0066] Embodiment 3

[0067] Reference Figures 1 to 3 On the basis of the first embodiment, the belt swing mechanism 130 includes a bus bar placement component 131 and a welding belt placement component 132; the bus bar placement component 131 is used to place the bus bar; the welding belt placement component 132 is used to place the welding belt.

[0068] In this embodiment, the bus bar placement assembly 131 and the solder strip placement assembly 132 are arranged in sequence, and the battery cell base plate 500 on which the battery cells 211 have been placed is sequentially conveyed to the bus bar placement assembly 131 and the solder strip placement assembly 132 through the main conveyor belt 170, and the bus bar 400 and the solder strip 300 are successively placed at preset positions on the battery cell base plate 500 to facilitate the subsequent welding process.

[0069] In some embodiments, the welding ribbon placement assembly 132 and the bus bar placement assembly 131 may be arranged in sequence, with the welding ribbon 300 being placed first and the bus bar 400 being placed later on the battery cell bottom plate 500 .

[0070] Embodiment 4

[0071] Reference Figures 1 to 3 On the basis of the third embodiment, the busbar placement assembly 131 includes a glue dispensing structure 1311 and a busbar placement structure 1312 which are arranged in sequence; the glue dispensing structure 1311 is used to apply glue at the position where the busbar 400 needs to be placed; the busbar placement structure 1312 is used to place the busbar 400 at the position where the glue is applied.

[0072] In this embodiment, the glue dispensing structure 1311 and the busbar placement structure 1312 are arranged in sequence, and the conveyor belt supports the battery cell bottom plate 500 with the battery cell 211 placed thereon to pass through the glue dispensing structure 1311, and the glue dispensing structure 1311 applies glue to the position where the busbar 400 needs to be placed on the battery cell bottom plate 500, and then the conveyor belt supports the battery cell bottom plate 500 that has been glued to pass through the busbar placement structure 1312, and the busbar placement structure 1312 places the busbar at the glue dispensing position. The glue applied on the battery cell bottom plate 500 fixes the busbar to prevent the placement position of the busbar 400 from being offset during the subsequent transmission process.

[0073] Specifically, the glue dispensing structure 1311 and the busbar placement structure 1312 are respectively arranged on the gantry, and the gantry is straddled on the main conveyor belt 170. The glue dispensing structure 1311 can reciprocate on the gantry to facilitate the glue coating of the battery cell bottom plate 500.

[0074] In one embodiment, the busbar placement structure 1312 includes a busbar storage portion 13121, a busbar pull-out portion 13122, a busbar cut-off portion (not shown in the figure), and a busbar placement portion 13123. The busbar storage portion 13121 is used to store the busbar 400, the busbar pull-out portion 13122 is used to extract the busbar 400 from the busbar storage portion 13121, the busbar cut-off portion is used to cut the busbar 400 into a suitable length, and the busbar placement portion 13123 places the cut busbar 400 at the dispensing position.

[0075] Embodiment 5

[0076] Reference Figures 1 to 3 On the basis of the third embodiment, the solder strip placement assembly 132 includes a glue coating structure 1321 and a solder strip placement structure 1322 which are sequentially arranged; the glue coating structure 1321 is used to apply glue on the solder strip; the solder strip placement structure 1322 is used to place the solder strip coated with glue on the battery cell bottom plate 500.

[0077] In this embodiment, the conveyor belt supports the cell bottom plate 500 on which the cell 211 and the bus bar 400 are placed, and passes through the solder strip placement assembly 132. The solder strip placement assembly 132 includes a glue coating structure 1321 and a solder strip placement structure 1322. The solder strip first passes through the glue coating structure 1321 to apply glue on the solder strip, and then is placed on the cell bottom plate 500 through the solder strip placement structure 1322. Applying glue on the solder strip fixes the solder strip on the cell bottom plate 500 to prevent the placement position of the solder strip from shifting during the subsequent transmission process.

[0078] In one embodiment, the glue coating structure 1321 may include a solder strip storage unit 13211 and a glue coating pool 13212. The solder strip storage unit 13211 is used to store the solder strip 300. Specifically, the solder strip storage unit 13211 may be a reel on which the solder strip is wound. The glue coating pool 13212 is disposed at a position where the solder strip must pass when it is pulled out of the reel, so that the solder strip 300 passes through the glue coating pool 13212 and is immersed in the glue in the glue coating pool, and the glue is coated on the solder strip 300.

[0079] The solder strip placement structure 1322 may include a solder strip pulling portion 13221, a solder strip cutting portion (not shown in the figure), and a solder strip placement portion 13222. The solder strip pulling portion 13221 is used to pull out the solder strip 300 coated with adhesive from the adhesive coating structure 1321, the solder strip cutting portion is used to cut the solder strip 300 into a suitable length, and the solder strip placement portion 13222 places the cut solder strip 300 to a desired position.

[0080] Embodiment 6

[0081] Reference Figures 1 to 3 , Figure 7 and Figure 8 On the basis of the first embodiment, the welding mechanism 140 includes a bearing part 141, a light-transmitting flexible layer 142 and a laser welding part 143; the bearing part 141 has a supporting surface 1411 for supporting a battery cell bottom plate 500 on which battery cells 211, welding strips and bus bars are placed; the flexible layer 142 has a first state of being placed on the supporting surface 1411 and a second state of being away from the supporting surface 1411; when the flexible layer 142 is in the first state, the flexible layer 142 cooperates with the bearing surface to form a closed space that wraps the battery cells 211, welding strips, bus bars and battery cell bottom plate 500; the bearing part 141 is provided with a vacuum channel that conducts and connects the bearing surface and an external vacuum device; the laser welding part 143 is located above the flexible layer 142 to weld the welding strips, bus bars and battery cell bottom plate 500 in the closed space to form a battery string array 210.

[0082] Reference Figure 7 In implementation, the carrying portion 141 is used to carry the battery cell bottom plate 500, and the battery cells 211, bus bars and welding rods arranged on the battery cell bottom plate 500 are workpieces that need to be welded. Optionally, the top surface of the carrying portion 141 can be regarded as a carrying surface, and the battery cell bottom plate 500 can be placed on the carrying surface.

[0083] Reference Figure 7The flexible layer 142 cooperates with the bearing surface to form a closed space that wraps the battery cell 211, busbars, welding strips and the battery cell bottom plate 500. Specifically, the portion of the flexible layer 142 corresponding to the battery cell bottom plate 500 can produce a certain deformation under the action of the battery cell bottom plate 500, and the other portion of the flexible layer 142 can fit the bearing surface. At this time, the flexible layer 142 cooperates with the bearing surface to form a closed space that wraps the battery cell bottom plate 500. The flexible layer 142 can be a silicone layer.

[0084] Optionally, refer to Figure 7 The bearing portion 141 is provided with a vacuum channel, wherein one end of the vacuum channel is connected to the bearing surface. Exemplarily, the bearing surface is provided with a plurality of vacuum holes, which are connected to the vacuum channel. The other end of the vacuum channel is connected to an external vacuum device. During implementation, the external vacuum device is used to evacuate so that a vacuum state is formed between the bearing surface and the flexible layer 142.

[0085] During operation, the flexible layer 142 moves to above the bearing portion 141. At this time, the flexible layer 142 is in the second state. Figure 7 As shown, when the battery cell bottom plate 500 is transported to the carrying surface, the flexible layer 142 is pressed down onto the carrying surface. At this time, the portion of the flexible layer 142 corresponding to the battery cell bottom plate 500 is deformed under the action of the battery cell bottom plate 500, while the other portion of the flexible layer 142 is attached to the carrying surface. Figure 7 As shown, the flexible layer 142 and the bearing surface form a closed chamber to wrap the battery cell bottom plate 500, and the flexible layer 142 is in the first state.

[0086] The external vacuum equipment starts to draw vacuum, such as Figure 7 , the arc arrow indicates the flow direction of the gas, and the air in the enclosed space is pumped out to make the enclosed space into a vacuum state. At this time, the battery cell bottom plate 500 can be laser welded. For example, the laser moves to the top of the battery cell bottom plate 500 for laser welding. After the welding is completed, the external vacuum equipment is inflated, such as Figure 8 As shown, gas is filled into the enclosed space from the outside to keep the enclosed space consistent with the external atmospheric pressure. Figure 8 As shown, the conveying device conveys the welded battery string array 210 forward, and conveys the next battery cell bottom plate 500 to be welded, and performs the next welding.

[0087] In one embodiment, the battery cell base plate 500 with the battery cells 211, bus bars and welding strips arranged thereon is conveyed by the main conveyor belt 170 to the laser welding section 143 for welding. The laser welding section 143 may be arranged on a gantry which is arranged across the main conveyor belt 170. The bearing portion 141 may be the portion of the main conveyor belt 170 which passes through the laser welding section 143.

[0088] Embodiment 7

[0089] Reference Figure 3 In this embodiment, the welding device 100 also includes a battery original sheet loading mechanism 190 for conveying a plurality of battery original sheets 200 to the dicing and coating mechanism 110 .

[0090] The battery cell loading mechanism 190 is used to automatically load the battery cell 200, thereby reducing manual labor and the number of required workers.

[0091] The battery cell loading mechanism 190 can use a robotic arm to carry out loading, or can use other existing loading machines to load.

[0092] The battery cell loading mechanism 190 usually includes a plurality of battery cells 200 for storing stacked layers, and then the battery cells 200 are transported and delivered to the dicing and coating mechanism 110 in sequence by a transporting and transferring mechanism on the battery cell loading mechanism 190 .

[0093] Embodiment 8

[0094] Reference Fig. 9 In this embodiment, the welding device 100 further includes a laser marking machine 160 for marking the battery string array 210 .

[0095] The laser marking machine 160 can mark the serial number on the battery string array 210, such as the production information of the battery string array 210, to facilitate the subsequent tracking of the product.

[0096] The laser marker 160 may be disposed below the assembly line 141 of the conveying device. When the battery string array 210 passes above the laser marker 160 , the laser marker 160 performs laser marking on the battery string array 210 .

[0097] The laser marking position is usually at the edge of the battery string array 210 to avoid blocking the photovoltaic module. In one embodiment, the laser marking position is at a corner edge of the battery string array 210, and the edge is consistent with the conveying direction of the conveying device. The marking is performed while conveying forward, thereby forming a series of serial numbers 142 that are consistent with the conveying direction and the edge.

[0098] Embodiment 9

[0099] This embodiment provides a photovoltaic module production system, including any photovoltaic module welding device of Embodiment 1 to Embodiment 8.

[0100] In this embodiment, the beneficial effects of the photovoltaic module production system and the photovoltaic module welding device are similar and will not be elaborated here.

[0101] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A photovoltaic module welding device, characterized in that: It includes a scribing and coating mechanism, a sheet swinging mechanism, a belt swinging mechanism and a welding mechanism which are arranged in sequence; The scribing and coating mechanism comprises a first coating part for coating a first insulating glue on a battery original sheet and a scribing part for cutting the battery original sheet into a plurality of battery sheets; The swinging sheet mechanism is used to arrange the plurality of battery sheets in an entire page; The belt swing mechanism is used to place a plurality of welding belts and a plurality of bus bars on the battery cell bottom plate, and the welding belts and the bus bars are placed corresponding to the welding point positions of the battery cell; The welding mechanism is used to weld the welding strip, the bus bar, and the welding point; The swinging piece mechanism is a mechanical arm, a telescopic mechanism with a track, or an XYZ three-axis movable type.

2. The photovoltaic module welding device according to claim 1, characterized in that: The welding device also includes a heating mechanism; The heating mechanism is used to heat the battery cell bottom plate and is arranged between the swinging sheet mechanism and the swinging belt mechanism.

3. The photovoltaic module welding device according to claim 1, characterized in that: The belt swing mechanism includes a busbar placement component and a welding belt placement component; The busbar placement assembly is used to place the busbars; The welding strip placement assembly is used to place the welding strips.

4. The photovoltaic module welding device according to claim 3, characterized in that: The busbar placement assembly includes a glue dispensing structure and a busbar placement structure which are sequentially arranged; The glue dispensing structure is used to apply glue at the location where the busbar needs to be placed; The busbar placement structure is used to place the busbar at a position where the adhesive is applied.

5. The photovoltaic module welding device according to claim 3, characterized in that: The welding strip placement assembly comprises a glue coating structure and a welding strip placement structure; The glue coating structure is used to apply glue on the welding strip; The soldering ribbon placement structure is used to place the soldering ribbon coated with adhesive on the battery cell bottom plate.

6. The photovoltaic module welding device according to claim 1, characterized in that: The welding mechanism comprises a bearing portion, a light-transmissive flexible layer and a laser welding portion; The bearing part has a bearing surface for supporting the battery cell bottom plate on which the battery cell, the welding strip, and the bus bar are placed. The flexible layer has a first state of being placed on the bearing surface and a second state of being away from the bearing surface. When the flexible layer is in the first state, the flexible layer cooperates with the bearing surface to form a closed space that wraps the battery cell, the welding strip, the bus bar, and the battery cell bottom plate. The bearing part is provided with a vacuum channel that conducts and connects the bearing surface and an external vacuum device. The laser welding part is located above the flexible layer and welds the welding strip, the bus bar and the battery cell bottom plate in the enclosed space to form a battery string array.

7. The photovoltaic module welding device according to claim 1, characterized in that: The welding device also includes a battery original sheet feeding mechanism for conveying a plurality of battery original sheets to the dicing and coating mechanism.

8. The photovoltaic module welding device according to claim 6, characterized in that: The welding device also includes a laser marking machine for marking the battery string array.

9. A photovoltaic module production system, characterized in that: It comprises the photovoltaic module welding device as described in any one of claims 1 to 8.

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