Bus bar bearing table and bus bar welding equipment

Abstract

The utility model provides a bus bar bearing table and bus bar welding equipment, the bus bar bearing table comprises a mounting plate and N welding tables, the N welding tables are arranged on the mounting plate at intervals in the first horizontal direction, and each welding table can independently float relative to the mounting plate after being pressed; the N welding tables are used for bearing bus bars extending in the first horizontal direction in a matched mode, and the switching positions between the top bearing faces of the welding tables and the side vertical faces of the welding tables are chamfers or fillets. According to the bus bar bearing table provided by the invention, the joint of the top bearing surface of the welding table and the side vertical surface of the welding table is chamfered, so that when the welding table is pressed to generate floating deflection, the edge of the welding table is not easy to rub a coating on the surface of the bus bar, and the damage to the coating on the surface of the bus bar is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module production, specifically a busbar support platform and busbar welding equipment. Background Technology

[0002] When welding busbars onto the extended solder strips of the battery string, a busbar support platform is needed to support the busbars and transport them to the area below the corresponding extended solder strip. Then, a welding mechanism is used to press the extended solder strips and busbars together for welding.

[0003] Busbar support platforms typically consist of a mounting plate and multiple soldering stations spaced apart on the mounting plate. These soldering stations work together to support the busbar, and each station is floating on the mounting plate, able to float relative to the plate under pressure. Existing soldering stations have sharp right-angle edges between their top bearing surface and side surfaces. A problem arises when the busbar's surface facing the soldering station has a coating, such as the black-coated busbar used in all-black modules. During soldering, the soldering station floats and deflects under pressure, and the right-angle edges of the soldering stations easily scrape against the busbar, damaging the busbar's coating. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a busbar support platform, the detailed technical solution of which is as follows:

[0005] A busbar support platform includes a mounting plate and N welding stations, wherein:

[0006] N welding stations are spaced apart on the mounting plate along the first horizontal direction. Each welding station can float independently relative to the mounting plate when it is pressed.

[0007] N welding stations are used to support the busbar extending along the first horizontal direction. The transition between the top bearing surface of the welding station and the side surface of the welding station is chamfered or rounded.

[0008] The busbar support platform provided in this application has a chamfered or rounded corner at the transition between the top support surface of the welding station and the side surface of the welding station, which weakens the sharp corner at the transition. With this design, when the welding station is subjected to pressure and floats and deflects during the welding process, its edge is less likely to scratch the coating on the surface of the busbar, thereby effectively reducing damage to the coating on the surface of the busbar.

[0009] In some embodiments, the top bearing surface of the welding station is polygonal in shape, and the connection between each side of the top bearing surface and the corresponding side face is rounded. The corner formed by any two adjacent sides of the top bearing surface is also rounded.

[0010] Since each edge of the top bearing surface is rounded with the corresponding side surface, and the corner formed by any two adjacent edges of the top bearing surface is also rounded, during the welding process, when the welding station is subjected to pressure and causes floating deflection, regardless of the angle at which each welding station deflects, it can be ensured that no edge of the top bearing surface of each welding station or the corner of the adjacent edge will scratch the coating on the surface of the busbar.

[0011] In some embodiments, the mounting plate is provided with N mounting slots at intervals along the first horizontal direction, each corresponding to a soldering station. A first spring is provided in the mounting slot, and each soldering station is movably mounted in the corresponding mounting slot, with the lower end of the soldering station abutting against the first spring.

[0012] The welding station is mounted on the mounting plate via a first spring, allowing it to float up and down relative to the mounting plate. This ensures that during the welding process, when the busbar is compressed, all welding stations are in close contact with the bottom surface of the busbar, guaranteeing proper contact between the busbar and each extended welding strip and preventing incomplete welds.

[0013] In some embodiments, the top bearing surface of the soldering station is a smooth plane.

[0014] By setting the top bearing surface of the soldering station to a smooth plane, the friction between the top bearing surface of the soldering station and the busbar can be reduced, preventing the top bearing surface of the soldering station from causing wear on the coating on the surface of the busbar.

[0015] In some embodiments, the busbar support platform further includes M suction cup assemblies spaced apart on the mounting plate along a first horizontal direction, the M suction cup assemblies being used to cooperate in adsorbing the busbars supported on N welding stations.

[0016] M suction cup assemblies work together to adsorb the busbars carried on N welding stations, thus achieving the positioning of the busbars and preventing the busbars from shifting or moving during the process of the busbar support platform moving the busbars to the welding position.

[0017] In some embodiments, the mounting plate is provided with a first air passage extending in a first horizontal direction. The first air passage is connected to M suction cup assemblies. The first air passage is also connected to an external vacuum device through a first air pipe. The vacuum device is used to evacuate air from the M suction cup assemblies through the first air passage so that the M suction cup assemblies can adsorb the manifold strip.

[0018] The M suction cup assemblies are connected to an external vacuum device via a first air passage located within the mounting plate. By using only one air pipe (the first air pipe) between the first air passage and the vacuum device, the vacuum device can uniformly evacuate all the suction cup assemblies, allowing all the suction cup assemblies to simultaneously adsorb the manifold. Since there is only one first air pipe, the air passage arrangement of the manifold support platform is simplified, and the movement interference to the manifold support platform is also reduced.

[0019] In some embodiments, the mounting plate is provided with vertical through mounting plates and mounting holes corresponding one-to-one with the suction cup assembly; the suction cup assembly includes a mounting body and a first suction cup, the upper end of the mounting body is inserted into the mounting hole, and the first suction cup is mounted on the upper end of the mounting body; the mounting body is provided with a first connecting air channel that connects the first air passage and the first suction cup, and the vacuuming device evacuates the first suction cup through the first air passage and the first connecting air channel so that the first suction cup generates an adsorption force to adsorb the manifold.

[0020] A specific suction cup assembly and its mounting structure are provided. By opening a first connecting air passage in the mounting body that communicates with the first air passage, the first suction cup and the first air passage are connected. In this way, the vacuuming device can simultaneously evacuate the first suction cups of each suction cup assembly through the first air passage.

[0021] In some embodiments, the busbar support platform further includes a lifting drive assembly, which is used to drive the mounting bodies of each suction cup assembly to move up and down synchronously, so as to drive the first suction cup of each suction cup assembly to switch synchronously between a high adsorption position and a low avoidance position, wherein the high adsorption position is flush with the top support surface of the welding station.

[0022] By incorporating a lifting drive assembly, before placing the busbar, the assembly, via the mounting body, drives the first suction cup to a high suction position, ensuring its suction surface is flush with the top bearing surface of the welding station. This allows the first suction cup to contact or approach the busbar when it is placed on N welding stations, effectively securing it. Before welding the busbar, the lifting drive assembly, via the mounting body, drives the first suction cup to a low avoidance position to prevent damage from the high temperatures during welding.

[0023] In some embodiments, the lifting drive assembly includes M cylinders and M second springs. Each cylinder has a cylindrical cavity inside, and a transition hole at the upper end of the cylinder connects the cavity to a mounting hole. The diameter of the transition hole is smaller than the diameter of the cavity. The mounting body includes a first mounting portion and a second mounting portion. The second mounting portion passes upward through the transition hole into the mounting hole, and a first suction cup is connected to the upper end of the second mounting portion. The M first mounting portions are inserted one-to-one into the cavities of the M cylinders. A second spring is press-fitted between the bottom of each first mounting portion and the cavity. The portion of the cavity above the first mounting portion forms a compression chamber. The mounting plate also has a second air passage extending along a first horizontal direction, which communicates with the M compression chambers. The second air passage is also connected to an external air source via a second air pipe. The air source is used to ventilate the M compression chambers through the second air passage to push the mounting body downward, causing the first suction cup to descend to a low clearance position, and the second spring to contract under pressure. When the air source stops ventilating the compression chambers, the second spring loses pressure and rebounds, pushing the mounting body upward to reset, thereby causing the first suction cup to rise to a high suction position.

[0024] A second air passage located within the mounting plate centrally controls the airflow to and from the M cylinders positioned below the mounting plate. This allows the M cylinders, in conjunction with their corresponding M second springs, to drive their respective first suction cups to switch between a high suction position and a low avoidance position. Since the compression chambers of all M cylinders are connected to the second air passage, only one air pipe (i.e., the second air pipe) is needed to connect the second air passage to the external air source to achieve lifting and lowering control of all the first suction cups. This further simplifies the air passage layout of the manifold support platform and also reduces interference with the movement of the manifold support platform.

[0025] In some embodiments, a second connecting air passage communicating with the first air passage is provided on the side wall of the cylinder body, and an annular air groove is provided between the first mounting part and the inner wall of the cavity body. The annular air groove is used to keep the second connecting air passage and the first connecting air passage connected during the lifting and lowering of the mounting body. A third connecting air passage communicating with the second air passage and the compression chamber is also provided on the side wall of the cylinder body, and the air source passes through the third connecting air passage to ventilate the compression chamber.

[0026] By setting up a second connecting air passage, the connection between the first air passage and the first connecting air passage is achieved. By setting up an annular air groove, it is ensured that the second connecting air passage and the first connecting air passage remain connected during the lifting and lowering process of the mounting body. By setting up a third connecting air passage, the connection between the second air passage and the compression chamber is achieved, enabling the air source to ventilate the compression chamber.

[0027] In some embodiments, the mounting plate is provided with through holes that penetrate the mounting plate and correspond one-to-one with the M suction cup assemblies; the suction cup assembly includes a lifting drive unit, a suction cup mounting rod, and a second suction cup, wherein: the lifting drive unit is located below the mounting plate; the suction cup mounting rod is vertically arranged, the lower end of the suction cup mounting rod is connected to the drive end of the lifting drive unit, and the upper end of the suction cup mounting rod passes through the through hole; the second suction cup is mounted on the upper end of the suction cup mounting rod and is connected to an external vacuum device through the suction cup mounting rod; the lifting drive unit is used to drive the suction cup mounting rod to rise and fall, so as to drive the second suction cup to switch between a high adsorption position and a low avoidance position, wherein the high adsorption position is flush with the top bearing surface of the soldering station.

[0028] Another specific suction cup assembly and its mounting structure are provided, in which the second suction cup of each assembly can independently switch between a high suction position and a low clearance position. When the busbar is placed on N welding stations, the second suction cup can contact or approach the busbar to achieve suction and fixation. Before welding the busbar, the lifting drive unit drives the second suction cup to the low clearance position to avoid the busbar and prevent damage to the second suction cup from the high temperature during the welding process. Since the second suction cup of each suction cup assembly can rise and fall independently, it can be ensured that the second suction cup of each suction cup assembly can contact or approach the busbar, thereby achieving stable suction of the busbar.

[0029] In some embodiments, the busbar support platform further includes a cooling mechanism disposed on the mounting plate, the cooling mechanism being used to blow air into the gap between adjacent soldering stations to cool the busbar from below.

[0030] By setting up a cooling mechanism, after the upper surface of the busbar is soldered to the extended solder strip, the cooling mechanism can blow air to cool the bottom surface of the busbar. This not only effectively shortens the cooling time and increases production capacity, but also prevents the airflow from blowing onto the uncured solder between the busbar and the extended solder strip, thus avoiding any adverse effects on the soldering quality between the busbar and the extended solder strip, thereby ensuring the soldering quality.

[0031] This application also provides a busbar welding device, which includes a busbar support platform and a welding mechanism as described in any of the above claims, wherein: the busbar support platform is used to support the busbar and move the busbar below the extended welding strip of the battery string, and such that the extended welding strip of the battery string is stacked on the busbar; the welding mechanism is disposed above the busbar support platform and can move toward or away from the busbar support platform, and is used to heat the busbar to weld it to the extended welding strip.

[0032] With the cooperation of the busbar support platform and the welding mechanism, the busbar welding equipment provided in this application realizes the automatic welding of the long welding strip at the end of the battery string to the busbar. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the busbar support platform in one embodiment of this application;

[0034] Figure 2 This is a side view of the busbar support platform in one embodiment of this application.

[0035] Figure 3 for Figure 2 AA section view;

[0036] Figure 4 for Figure 2 BB cross-sectional view;

[0037] Figure 5 This is a top view of the busbar support platform in one embodiment of this application;

[0038] Figure 6 for Figure 5 CC section view.

[0039] Figure 7 This is a side view of the busbar support platform in another embodiment of this application.

[0040] Figures 1 to 7 Includes:

[0041] Mounting plate 1:

[0042] First air passage 11, mounting hole 12, second air passage 13;

[0043] Soldering station 2;

[0044] Suction cup component 3:

[0045] Mounting body 31: First mounting part 311, second mounting part 312;

[0046] First suction cup 32;

[0047] First connecting airway 33;

[0048] Lifting drive unit 34;

[0049] Suction cup mounting rod 35;

[0050] Second suction cup 36;

[0051] First connector 4;

[0052] Lifting drive component 5:

[0053] Cylinder block 51;

[0054] Second spring 52;

[0055] Cavity 53: Compression chamber 531;

[0056] Transition hole 54;

[0057] Second connecting airway 55;

[0058] 56 annular air grooves;

[0059] Third connecting airway 57;

[0060] First sealing ring 58;

[0061] Second sealing ring 59;

[0062] Second connector 510;

[0063] Cooling mechanism 6:

[0064] Air block 61;

[0065] Third connector 62;

[0066] Third air passage 63;

[0067] Air inlet 64;

[0068] First spring 7. Detailed Implementation

[0069] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0070] The battery string mentioned in this application refers to a battery string formed by stacking and connecting battery cells and solder ribbons according to the battery stringing rules. Adjacent battery cells are connected in series by solder ribbons, and the solder ribbons extending from both ends of the battery string are called extended solder ribbons.

[0071] The battery string group mentioned in this application refers to a group of battery strings arranged according to the layout requirements of photovoltaic modules.

[0072] like Figures 1 to 7 As shown, the busbar support platform provided in this embodiment includes a mounting plate 1 and N (e.g., 16 in the figure) welding stations 2, wherein:

[0073] N welding stations 2 are spaced apart on the mounting plate 1 along the first horizontal direction (such as the X direction), and each welding station 2 can float independently relative to the mounting plate 1 after being pressed.

[0074] N welding stations 2 are used to support the busbar extending along the first horizontal direction. The transition between the top bearing surface of the welding station 2 and the side surface of the welding station 2 is chamfered or rounded.

[0075] Optionally, when the transition between the top bearing surface of the welding station 2 and the side elevation of the welding station 2 is chamfered, the chamfer angle can be 30°, 45°, 60°, etc.

[0076] The optional working process of the busbar support platform in this embodiment is as follows:

[0077] First, place the busbar to be welded on N welding stations 2 along the first horizontal direction.

[0078] Next, the busbar support platform moves the busbar to below the battery string, allowing the extended solder strips of the battery string to be stacked on the busbar.

[0079] Finally, the upper surface of the busbar is pressed and welded to the extended welding strip by a welding mechanism.

[0080] The busbar support platform provided in this application embodiment has a chamfered or rounded corner at the transition between the top support surface of the welding station 2 and the side surface of the welding station 2, which weakens the sharp corner at the transition. In this way, when the welding station 2 is subjected to pressure and floats and deflects, its edge is less likely to scratch the coating on the surface of the busbar, thereby effectively reducing the damage to the coating on the surface of the busbar.

[0081] Optionally, the top bearing surface of the welding station 2 is polygonal, such as a square, and the connection between each side of the top bearing surface and the corresponding side face is rounded. In addition, the corners formed by any two adjacent sides of the top bearing surface of the welding station 2 are also rounded.

[0082] Since each edge of the top bearing surface of the welding station 2 has rounded corners with the corresponding side surfaces, and the corners formed by any two adjacent edges of the top bearing surface are also rounded, and rounded corners are smoother than chamfers, when the welding station 2 is subjected to pressure and causes floating deflection, regardless of the angle at which each welding station 2 deflects, it can be ensured that no one side of the top bearing surface of each welding station 2 or the corner of the adjacent side will scratch the coating on the surface of the busbar.

[0083] like Figure 6 As shown, optionally, the mounting plate 1 has N mounting slots spaced at intervals along the first horizontal direction, each corresponding to a welding station 2. A first spring 7 is installed in each mounting slot, and each welding station 2 is movably mounted within its corresponding slot, with its lower end abutting against the first spring 7. The welding station 2 is mounted on the mounting plate 1 via the first spring 7, allowing it to float up and down relative to the mounting plate 1. This ensures that during the welding process, when the busbar is compressed, all welding stations 2 are in close contact with the bottom surface of the busbar, guaranteeing proper contact between the busbar and each extended welding strip and preventing incomplete welds.

[0084] Optionally, the top bearing surface of the soldering station 2 is a smooth plane. By setting the top bearing surface of the soldering station 2 to a smooth plane, the friction between the top bearing surface of the soldering station 2 and the busbar can be reduced, preventing the top bearing surface of the soldering station 2 from causing wear on the coating on the surface of the busbar.

[0085] like Figure 1 and Figure 5 As shown, optionally, the busbar support platform in this embodiment further includes M suction cup assemblies 3 (e.g., 2 in the figure) spaced apart along the first horizontal direction on the mounting plate 1. The M suction cup assemblies 3 are used to cooperate in adsorbing the busbars supported on the N soldering stations 2.

[0086] M suction cup components 3 work together to adsorb the busbars supported on N welding stations 2, thereby achieving the positioning of the busbars and preventing the busbars from shifting or moving during the process of the busbar support platform moving the busbars to the welding position, which would affect the welding effect of the busbars.

[0087] like Figures 3 to 4As shown, optionally, the mounting plate 1 is provided with a first air passage 11 extending in the first horizontal direction. The first air passage 11 is connected to M suction cup assemblies 3. The first air passage 11 is also connected to an external vacuum device through a first air pipe. The vacuum device is used to evacuate air from the M suction cup assemblies 3 through the first air passage so that the M suction cup assemblies 3 can adsorb the manifold strip.

[0088] M suction cup assemblies 3 are connected to an external vacuum device via a first air passage 11 located within the mounting plate 1. By using only one air pipe (the first air pipe) between the first air passage 11 and the vacuum device, the vacuum device can uniformly evacuate all suction cup assemblies 3, allowing all suction cup assemblies 3 to simultaneously adsorb the manifold. Since there is only one first air pipe, the air passage arrangement of the manifold support platform is simplified, and the movement interference to the manifold support platform is also reduced.

[0089] Optionally, the manifold support platform in this embodiment of the application further includes a first connector 4 disposed on the mounting plate 1. The first connector 4 is connected to the first air passage 11 and is used to connect to a vacuum device via a first air pipe.

[0090] Of course, M air paths corresponding to M suction cup assemblies 3 can also be set in the mounting plate 1. The vacuuming device can independently evacuate the M suction cup assemblies 3 through the M air paths so that the M suction cup assemblies 3 can adhere to the manifold.

[0091] like Figure 4 As shown, optionally, the mounting plate 1 is provided with vertically penetrating mounting holes 12, each corresponding to a suction cup assembly 3. The suction cup assembly 3 includes a mounting body 31 and a first suction cup 32. The upper end of the mounting body 31 is inserted into the mounting hole 12, and the first suction cup 32 is mounted on the upper end of the mounting body 31. A first connecting air passage 33 is provided inside the mounting body 31, connecting the first air passage 11 and the first suction cup 32. A vacuum device evacuates air from the first suction cup 32 through the first air passage 11 and the first connecting air passage 33, so that the first suction cup 32 generates an adsorption force to adsorb the manifold.

[0092] During the welding process, the busbar reaches a high temperature, and if it directly contacts the first suction cup 32, it can damage the first suction cup 32. To prevent the high-temperature busbar from damaging the first suction cup 32, such as... Figures 1 to 2 As shown, optionally, the busbar support platform in this embodiment of the application further includes a lifting drive component 5. The lifting drive component 5 is used to drive the mounting body 31 of each suction cup component 3 to lift synchronously, so as to drive the first suction cup 32 of each suction cup component 3 to switch synchronously between the adsorption high position and the avoidance low position, wherein the adsorption high position is flush with the top support surface of the welding station 2.

[0093] The lifting drive assembly 5 enables synchronous lifting drive of all first suction cups 32, thereby reducing drive costs.

[0094] Before placing the busbar, the lifting drive assembly 5 drives the first suction cup 32 to a high suction position. This ensures that when the busbar is placed on the N welding stations 2, the first suction cup 32 can contact or approach the busbar for suction and fixation. Before welding the busbar, the lifting drive assembly 5, via the mounting body 31, drives the first suction cup 32 to a low avoidance position to avoid the busbar and prevent damage to the first suction cup 32 from the high temperatures during welding.

[0095] like Figures 1 to 6 As shown, optionally, the lifting drive assembly 5 includes M cylinders 51 and M second springs 52. Each cylinder 51 has a cylindrical cavity 53 inside. The upper end of each cylinder 51 has a transition hole 54 connecting the cavity 53 and the mounting hole 12. The diameter of the transition hole 54 is smaller than the diameter of the cavity 53. The mounting body 31 includes a first mounting portion 311 and a second mounting portion 312. The second mounting portion 312 passes upward through the transition hole 54 and enters the mounting hole 12. A first suction cup 32 is connected to the upper end of the second mounting portion 312. The M first mounting portions 311 are inserted one-to-one into the cavities 53 of the M cylinders 51. A second spring 52 is press-fitted between the bottom of each first mounting portion 311 and the cavity 53. The portion of the cavity 53 located above the first mounting portion 311 forms a compression cavity 531.

[0096] The mounting plate 1 also includes a second air passage 13 extending along the first horizontal direction. The second air passage 13 is connected to M compression chambers 531 and is also connected to an external air source via a second air pipe. The air source is used to supply air to the M compression chambers 531 through the second air passage 13 to push the mounting body 31 downward, causing the first suction cup 32 to descend to the low position, and the second spring 52 to contract under pressure. When the air source stops supplying air to the compression chambers 531, the second spring 52 depressurizes and rebounds, pushing the mounting body 31 upward to reset, thereby causing the first suction cup 32 to rise to the high position for adsorption.

[0097] Since the compression chambers 531 of the M cylinders 51 are all connected to the second air passage 13, the lifting and lowering control of all the first suction cups 32 can be achieved by simply connecting the second air passage 13 and the external air source through an air pipe (i.e., the second air pipe), thereby further simplifying the air passage layout of the manifold support platform and reducing the movement interference to the manifold support platform.

[0098] The specific process by which the lifting drive assembly 5 controls the lifting of the first suction cup 32 is as follows:

[0099] Before placing the manifold, the air source does not vent air into the compression chambers 531 of the M cylinders 51. The second spring 52 is in its initial extended state, and the first suction cup 32 is in its high adsorption position. Thus, when the manifold is placed on the N welding stations 2, the first suction cup 32 can contact or approach the manifold to adsorb and fix it.

[0100] Before welding the manifold, the control air source is vented through the second air passage 13 to the compression chamber 531 of the M cylinders 51. The pressure in the compression chamber 531 rises, thereby pushing the mounting body 31 downward, which in turn drives the first suction cup 32 to descend to the avoidance low position to avoid the manifold and prevent the high temperature of the manifold during the welding process from damaging the first suction cup 32.

[0101] After the welded manifold cools down or leaves the welding station 2, the air supply is stopped, the pressure in the compression chamber 531 drops, the second spring 52 loses pressure and rebounds, thereby pushing the mounting body 31 to rise and reset, and driving the first suction cup 32 to rise again to the suction high position.

[0102] Optionally, a second connecting air passage 55 communicating with the first air passage 11 is provided on the side wall of the cylinder 51, and an annular air groove 56 is provided between the first mounting part 311 and the inner wall of the cavity 53. The annular air groove 56 is used to keep the second connecting air passage 55 and the first connecting air passage 33 connected during the lifting and lowering of the mounting body 311. By setting the width of the annular air groove 56 in the vertical direction, it can be achieved that: during the lifting and lowering of the mounting body 31, the opening of the second connecting air passage 55 facing the annular air groove 56 is always aligned with the annular air groove 56, so that the second connecting air passage 55 and the first connecting air passage 33 remain connected, ultimately ensuring that the suction cup 32 maintains its adsorption performance.

[0103] Optionally, the side wall of the cylinder 51 is also provided with a third connecting air passage 57 that connects the second air passage 13 and the compression chamber 531, and the air source passes through the third connecting air passage 57 to the compression chamber 531.

[0104] That is, by setting the third connecting air passage 57, the connection between the second air passage 13 and the compression chamber 531 is realized, so that the air source can ventilate the compression chamber 531.

[0105] like Figure 4 As shown, optionally, two first sealing rings 58 are provided at the contact point between the first mounting part 311 and the cavity 53. The two first sealing rings 58 are located on the upper and lower sides of the annular air groove 56. This arrangement can prevent air leakage from the annular air groove 56 and ensure the air extraction effect of the vacuum device on the M suction cup assemblies 3.

[0106] In addition, a second sealing ring 59 is provided at the contact point between the second mounting part 312 and the transition hole 54. The second sealing ring 59 seals the compression chamber 531, preventing gas in the compression chamber 531 from leaking into the mounting hole 12 through the transition hole 54, and ultimately ensuring that the pressure in the compression chamber 531 can rise rapidly when the gas source supplies air to the compression chamber 531.

[0107] like Figure 3As shown, optionally, the manifold support platform in this embodiment of the application further includes a second connector 510 disposed on the mounting plate 1. The second connector 510 is connected to the second air passage 13 and is used to connect to an air source via the second air pipe.

[0108] In another alternative embodiment, such as Figure 7 As shown, the mounting plate 1 has through holes that penetrate the mounting plate 1 and correspond one-to-one with the M suction cup assemblies 3. Each suction cup assembly 3 includes a lifting drive unit 34, a suction cup mounting rod 35, and a second suction cup 36. The lifting drive unit 34 is located below the mounting plate 1. The suction cup mounting rod 35 is vertically arranged, with its lower end connected to the drive end of the lifting drive unit, and its upper end passing through the through holes. The second suction cup 36 is mounted on the upper end of the suction cup mounting rod 35 and communicates with an external vacuum device through the suction cup mounting rod 35. The lifting drive unit 34 drives the suction cup mounting rod 35 to rise and fall, thereby switching the second suction cup 36 between a high suction position and a low avoidance position. The high suction position is flush with the top bearing surface of the welding station 2.

[0109] With this configuration, the second suction cup 36 of each suction cup assembly 3 can independently move up and down between a high suction position and a low clearance position. When the busbar is placed on the N welding stations 2, the second suction cup 36 can contact or approach the busbar to achieve suction and fixation of the busbar. Before welding the busbar, the lifting drive unit 34 drives the second suction cup 36 to the low clearance position to avoid the busbar and prevent the high temperature during the welding process from damaging the second suction cup. Since the second suction cup 36 of each suction cup assembly 3 can move up and down independently, it can be ensured that the second suction cup 36 of each suction cup assembly 3 can contact or approach the busbar, thereby achieving stable suction of the busbar.

[0110] The lifting drive unit 34 can be any existing drive component, such as a cylinder, capable of driving the suction cup mounting rod to lift.

[0111] Currently, heating soldering is commonly used to melt the solder between the busbar and the extended solder strip, then cool and solidify it to achieve the connection. The heating time is relatively short, only 1-2 seconds, but the cooling time after soldering is long, which may take 3-5 seconds or even longer. The next soldering can only be performed after the cooling is complete, which seriously affects production capacity.

[0112] To address this issue, optionally, the busbar support platform in this embodiment further includes a cooling mechanism 6. The cooling mechanism 6 is mounted on the mounting plate 1 and is used to blow air into the gap between adjacent soldering stations 2 to cool the busbar from below. This not only effectively shortens the cooling time and increases production capacity, but also prevents the airflow from blowing onto the uncured solder between the busbar and the extended solder strip, thus avoiding any adverse impact on the soldering quality between the busbar and the extended solder strip, thereby ensuring soldering quality.

[0113] Optionally, the cooling mechanism 6 includes an air blowing block 61 and a third connector 62. The air blowing block 61 is mounted on the mounting plate 1 and located on the side of the N soldering stations 2. A third air passage 63 extending along a first horizontal direction is formed inside the air blowing block 61. A plurality of air blowing ports 64 are arranged side by side at intervals along the first horizontal direction on the air blowing block 61. Each air blowing port 64 is connected to the third air passage 63, and each air blowing port 64 blows air toward the gap between two adjacent soldering stations 2. The third connector 62 is mounted on the air blowing block 61 and is connected to the third air passage 63. The third connector 62 is used to connect to an external air blowing device via a third air pipe (not shown in the figure). The air blowing device is used to introduce cooling gas into the third air passage 63.

[0114] This application also provides a busbar welding device, which includes the busbar support platform and welding mechanism described in any of the above embodiments. The busbar support platform is used to support the busbar and move it below the extended welding strip of the battery string, allowing the extended welding strip of the battery string to overlap onto the busbar. The welding mechanism is positioned above the busbar support platform and can move towards or away from the platform, used for heating to weld the busbar to the extended welding strip. Through the cooperation of the busbar support platform and the welding mechanism, the busbar welding device provided in this application achieves automatic welding of the extended welding strip at the end of the battery string to the busbar.

[0115] The present invention has been described in sufficient detail above, and is therefore quite specific. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of the present invention should fall within the protection scope of the present invention. The scope of protection claimed by the present invention is defined by the claims, and not by the above descriptions in the embodiments.

Claims

1. A busbar support platform, characterized in that, The busbar support platform includes a mounting plate and N welding stations, wherein: N welding stations are spaced apart on the mounting plate along a first horizontal direction, and each welding station can float independently relative to the mounting plate after being pressed. N welding stations are used to support the busbar extending along the first horizontal direction, and the transition between the top bearing surface of the welding station and the side surface of the welding station is chamfered or rounded.

2. The busbar support platform as described in claim 1, characterized in that, The top bearing surface of the welding station is polygonal in shape, and the connection between each side of the top bearing surface and the corresponding side surface is rounded. The corner formed by any two adjacent sides of the top bearing surface is also rounded.

3. The busbar support platform as described in claim 1, characterized in that, The mounting plate is provided with N mounting slots at intervals along the first horizontal direction, each corresponding to a welding station. A first spring is provided in each mounting slot, and each welding station is movably mounted in its corresponding mounting slot. The lower end of each welding station abuts against the first spring.

4. The busbar support platform as described in claim 1, characterized in that, The top bearing surface of the welding station is a smooth plane.

5. The busbar support platform as described in claim 1, characterized in that, The busbar support platform further includes M suction cup assemblies spaced apart on the mounting plate along the first horizontal direction. The M suction cup assemblies are used to cooperate in adsorbing the busbars supported on the N welding platforms.

6. The busbar support platform as described in claim 5, characterized in that, The mounting plate is provided with a first air passage extending along the first horizontal direction. The first air passage is connected to all M suction cup assemblies. The first air passage is also connected to an external vacuum device through a first air pipe. The vacuum device is used to evacuate air from the M suction cup assemblies through the first air passage so that the M suction cup assemblies can adhere to the manifold.

7. The busbar support platform as described in claim 6, characterized in that: The mounting plate is provided with mounting holes that penetrate vertically through the mounting plate and correspond one-to-one with the suction cup assembly; The suction cup assembly includes a mounting body and a first suction cup, with the upper end of the mounting body inserted into the mounting hole and the first suction cup mounted on the upper end of the mounting body. The mounting body has a first connecting air channel that connects the first air path and the first suction cup. The vacuum device evacuates air from the first suction cup through the first air path and the first connecting air channel, so that the first suction cup generates an adsorption force to adsorb the manifold.

8. The busbar support platform as described in claim 7, characterized in that: The busbar support platform also includes a lifting drive assembly, which is used to drive the mounting bodies of each suction cup assembly to rise and fall synchronously, so as to drive the first suction cup of each suction cup assembly to switch synchronously between a high adsorption position and a low avoidance position, wherein the high adsorption position is flush with the top support surface of the welding station.

9. The busbar support platform as described in claim 8, characterized in that: The lifting drive assembly includes M cylinders and M second springs. The cylinder has a cylindrical cavity inside, and the upper end of the cylinder has a transition hole connecting the cavity and the mounting hole. The diameter of the transition hole is smaller than the diameter of the cavity. The mounting body includes a first mounting part and a second mounting part, wherein the second mounting part passes upward through the transition hole and enters the mounting hole, and the first suction cup is connected to the upper end of the second mounting part; M first mounting parts are inserted into the cavities of M cylinders in a one-to-one correspondence, and a second spring is press-fitted between the bottom of each first mounting part and the cavity, and the portion of the cavity above the first mounting part forms a compression cavity. The mounting plate is also provided with a second air passage extending along the first horizontal direction. The second air passage is connected to the M compression chambers. The second air passage is also connected to an external air source through a second air pipe. The air source is used to ventilate the M compression chambers through the second air passage to push the mounting body downward, causing the first suction cup to descend to the low position to avoid the pressure, and the second spring to contract under pressure. When the air source stops supplying air to the compression chamber, the second spring loses pressure and rebounds, pushing the mounting body to rise and reset, thereby causing the first suction cup to rise to the adsorption high position.

10. The busbar support platform as described in claim 9, characterized in that: The cylinder body has a second connecting air passage that communicates with the first air passage on its side wall. An annular air groove is provided between the first mounting part and the inner wall of the cavity. The annular air groove is used to keep the second connecting air passage and the first connecting air passage connected during the lifting and lowering of the mounting body. The cylinder body is also provided with a third connecting air passage on its side wall, which connects the second air passage and the compression chamber. The air source supplies air to the compression chamber through the third connecting air passage.

11. The busbar support platform as described in claim 5, characterized in that, The mounting plate is provided with through holes that penetrate the mounting plate and correspond one-to-one with each of the M suction cup assemblies; The suction cup assembly includes a lifting drive unit, a suction cup mounting rod, and a second suction cup, wherein: The lifting drive unit is located below the mounting plate; The suction cup mounting rod is set vertically, with its lower end connected to the drive end of the lifting drive unit, and its upper end passing through the through hole. The second suction cup is mounted on the upper end of the suction cup mounting rod and is connected to an external vacuum device through the suction cup mounting rod; The lifting drive unit is used to drive the suction cup mounting rod to rise and fall, so as to drive the second suction cup to switch between a high adsorption position and a low avoidance position, wherein the high adsorption position is flush with the top bearing surface of the welding station.

12. The busbar support platform as described in claim 1, characterized in that, The busbar support platform also includes a cooling mechanism disposed on the mounting plate. The cooling mechanism is used to blow air into the gap between adjacent welding stations to cool the busbar from below.

13. A busbar welding device, characterized in that, The busbar welding equipment includes the busbar support platform and welding mechanism as described in any one of claims 1 to 12, wherein: The busbar support platform is used to support the busbar and move the busbar below the extended solder strip of the battery string, so that the extended solder strip of the battery string is stacked on the busbar. The welding mechanism is positioned above the busbar support platform and can move toward or away from the busbar support platform, and is used for heating to weld the busbar to the extended welding strip.

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