Busbar welding device

Abstract

The utility model discloses a kind of bus bar welding devices, comprising: welding lamp subassembly, pressure welding wire, support, welding panel and drive mechanism;Welding panel is equipped with the welding area for carrying bus bar;Welding lamp subassembly is set above welding panel, for heating bus bar;The both ends of pressure welding wire are set in the both ends of support respectively, the length direction of pressure welding wire is consistent with the length direction of bus bar, for when welding, bus bar is pressed tightly;Drive mechanism is transmission connection with support, for driving support to drive pressure welding wire to move to welding panel, so that pressure welding wire is pressed tightly with preset pressure bus bar. Drive mechanism moves pressure welding wire to bus bar by support, and makes pressure welding wire press on bus bar, so that bus bar and grid line solder ribbon keep suitable pressing force between, bus bar and grid line solder ribbon keep effectively contact, bus bar and grid line solder ribbon can effectively, stably weld, improve bus bar welding effect, avoid producing false welding.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module manufacturing technology, and in particular to a busbar welding device. Background Technology

[0002] In conventional photovoltaic (PV) modules, multiple power generation zones are typically arranged in a rectangular array. These zones, located in the same row or column, are connected in series via grid wires to form a cell string. To achieve efficient energy collection, the current from multiple grid wires needs to be directed to the same busbar. Existing technologies generally employ the following structure: a busbar and multiple grid wires are mounted on the PV cell. These grid wires connect the power generation zones on multiple cell strings, and the busbar is welded to the grid wires, thus achieving centralized current output.

[0003] A complete solar cell typically uses multiple grid wires and busbars, which are welded together to guide current collection. The busbar welding process is particularly critical. Existing welding equipment struggles to ensure stable contact between the busbars and the grid wires, resulting in gaps and incomplete welds between the busbars and the grid wires on the solar cell. Therefore, existing methods for welding busbars to grid wires suffer from incomplete welds. Utility Model Content

[0004] In order to solve the technical problem of incomplete welding of busbars in the prior art, one of the objectives of this utility model is to provide a busbar welding device.

[0005] One of the objectives of this utility model is achieved through the following technical solution:

[0006] A busbar welding device includes: a welding wire, a bracket, a welding panel, a welding lamp assembly, and a drive mechanism;

[0007] The welding panel is provided with a welding area for supporting the busbar;

[0008] The welding lamp assembly is positioned above the welding panel and is used to heat the busbar;

[0009] The two ends of the welding wire are respectively disposed at the two ends of the bracket, and the length direction of the welding wire is consistent with the length direction of the busbar, which is used to press the busbar tightly during welding;

[0010] The drive mechanism is connected to the bracket and is used to drive the bracket to move the welding wire toward the welding panel, so that the welding wire presses the busbar with a preset pressure.

[0011] Optionally, the busbar welding device further includes a welding cover, which is disposed on the bracket;

[0012] Alternatively, the support may be a welded cover.

[0013] Optionally, the welding panel is provided with a heating structure for heating the welding area.

[0014] Optionally, the bracket is provided with an adaptive adjustment mechanism, which is connected to the welding wire and is used to pull the welding wire to continuously output pressure to the busbar and adapt to the pressure generated by different pre-pressure strokes.

[0015] Optionally, the adaptive adjustment mechanism includes a first fixed block, a first sliding member, and a first elastic member. The first fixed block is disposed on the bracket, the first sliding member is slidably disposed on the first fixed block, and the first elastic member is connected to the first sliding member.

[0016] The welding wire is connected to the first sliding member, and the welding wire and the first elastic member respectively pull the first sliding member in opposite directions.

[0017] Optionally, the bracket is provided with a clamping mechanism, which abuts against the middle of the welding wire to maintain the downward pressure of the welding wire.

[0018] Optionally, the clamping mechanism is provided with a pressure bar for clamping the welding wire, and the pressure bar is provided with a heat insulation structure for blocking heat transfer.

[0019] Optionally, when the number of welding wires is at least two, the two welding wires are arranged in an X-shape or in parallel.

[0020] Optionally, the welding lamp assembly includes a temperature control component and a heat radiation source, wherein the temperature control component is electrically connected to the heat radiation source and is used to control the power output of the heat radiation source.

[0021] Optionally, the temperature control component includes an isolation module and an analog controller;

[0022] The analog controller is electrically connected to the isolation module to control the isolation output of the isolation module;

[0023] The isolation module is electrically connected to the thermal radiation source and is used to control the power output of the thermal radiation source.

[0024] Optionally, the bonding wire includes a centerline layer and an outer coating layer, wherein the centerline layer is a high-temperature resistant material layer and the outer coating layer is a non-stick coating; or

[0025] The welding wire is a high-temperature resistant material wire; or

[0026] The welding wire is made of a non-stick material.

[0027] Optionally, the busbar welding device further includes a moving platform, which includes at least one of an X-axis platform and a Y-axis platform;

[0028] The welding lamp assembly is mounted on the bracket, and the bracket is mounted on the mobile platform.

[0029] Optionally, the busbar welding device further includes a heat dissipation device, which is disposed on the welding cover. The air outlet or air inlet of the heat dissipation device faces the welding area and is used to dissipate heat from the busbar welding device and the busbar after welding.

[0030] Optionally, the busbar welding device further includes a conveyor table, which is the welding panel; or

[0031] The busbar welding device further includes a conveyor table, which comprises a support panel and a conveyor belt for conveying the battery cells to be welded. The conveyor belt wraps around the upper surface of the support panel, which serves as the welding panel; or

[0032] The busbar welding device further includes a conveyor table, which comprises a support panel and a conveyor belt for conveying the battery cells to be welded. The conveyor belt wraps around the upper surface of the support panel and serves as the welding panel; or

[0033] The busbar welding device also includes a welding table, on which the welding panel is provided.

[0034] Optionally, the conveyor belt is a high-temperature resistant conveyor belt.

[0035] Optionally, the welding wire has at least one auxiliary fixing point in the middle, and the auxiliary fixing point is elastically or fixedly connected to the bracket.

[0036] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0037] During the welding of the busbar to the grid strip, the battery cell is fed onto the welding panel, ensuring that the grid strip to be welded is located within the welding area. Then, the busbar is fed into the welding area, thus stacking the busbar and grid strip on top of each other within the welding area. The drive mechanism moves the welding wire towards the busbar via a bracket, pressing the wire onto the busbar to maintain appropriate pressure and effective contact between the busbar and the grid strip. When the welding lamp assembly heats the busbar and grid strip, effective and stable welding can be performed, improving the busbar welding effect and preventing incomplete welds. Attached Figure Description

[0038] Figure 1This is a schematic diagram of the busbar welding device of this utility model;

[0039] Figure 2 This is a structural schematic diagram of the busbar welding device of this utility model from another perspective;

[0040] Figure 3 This is a side view of the busbar welding device of this utility model;

[0041] Figure 4 This is a side view of another embodiment of the busbar welding device of this utility model;

[0042] Figure 5 This is an exploded view of the busbar welding device of this utility model;

[0043] Figure 6 This is an exploded view of the structure associated with the support in the busbar welding device of this utility model;

[0044] Figure 7 This is a schematic diagram of the adaptive adjustment mechanism in the busbar welding device of this utility model;

[0045] Figure 8 This is a schematic diagram of the clamping mechanism in the busbar welding device of this utility model;

[0046] Figure 9 This is a schematic diagram of the drive mechanism, support and other related structures in the busbar welding device of this utility model.

[0047] Explanation of reference numerals in the attached diagram:

[0048] 1. Welding wire;

[0049] 2. Bracket; 21. Light-shielding plate; 211. Light-transmitting hole;

[0050] 3. Welding panel; 31. Welding area;

[0051] 4. Welding lamp assembly; 41. Lamp tube; 42. Lamp holder;

[0052] 5. Drive mechanism; 51. Drive motor; 52. Lead screw; 53. Nut; 54. Slider; 55. Mounting plate;

[0053] 6. Conveyor table; 61. Support panel; 611. Negative pressure groove; 62. Roller assembly; 63. Conveyor belt; 631. Adsorption hole; 64. Negative pressure pipe; 65. Heating rod; 66. Temperature sensor;

[0054] 7. Welding table; 71. Telescopic cylinder; 72. Connecting rod;

[0055] 8. Adaptive adjustment mechanism; 81. First fixed block; 82. First sliding member; 83. First elastic member; 84. First adjusting screw;

[0056] 9. Clamping mechanism; 91. Second fixing block; 92. Second sliding member; 93. Second elastic member; 94. Second adjusting screw; 95. Pressure rod;

[0057] 10. Heat dissipation device. Detailed Implementation

[0058] The following will refer to the appendices in the embodiments of this application. Figure 1 To be continued Figure 9 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0059] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0060] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0061] like Figure 1 , 2 , 3 and Figure 5The illustrated busbar welding device includes a welding wire 1, a support 2, a welding panel 3, a welding lamp assembly 4, and a drive mechanism 5. The welding panel 3 has a welding area 31 for supporting the busbar. The welding lamp assembly 4 is positioned above the welding panel 3 and is used to heat the busbar. The two ends of the welding wire 1 are respectively positioned at the two ends of the support 2, with the length direction of the welding wire 1 aligned with the length direction of the busbar, for pressing the busbar firmly during welding. The drive mechanism 5 is connected to the support 2 and drives the support 2 to move the welding wire 1 towards the welding panel 3, so that the welding wire 1 presses the busbar firmly with a preset pressure, the preset pressure range being 0.3~8N / mm². 2 .

[0062] During the welding of the busbar to the grid strip, the battery cell is fed onto the welding panel 3, ensuring that the grid strip to be welded is located on the welding area 31. Then, the busbar is fed onto the welding area 31, so that the busbar and grid strip are stacked vertically within the welding area 31. The drive mechanism 5, via the bracket 2, moves the welding wire 1 towards the busbar, pressing it against the busbar to maintain appropriate pressure and effective contact between the busbar and the grid strip. When the welding lamp assembly 4 heats the busbar and grid strip, effective and stable welding can be performed, improving the welding effect and preventing incomplete welds.

[0063] In addition, the length direction of the welding wire 1 is consistent with the length direction of the busbar. The welding wire 1 can simultaneously press the busbar and each grid line welding strip, and press multiple positions at one time, which has a high pressing efficiency.

[0064] The busbar is heated by the welding lamp assembly 4. The light has good uniform diffusion, which can heat the busbar evenly, resulting in a balanced and stable welding effect.

[0065] Furthermore, the busbar welding device uses welding wire 1 as the structure for pressing the busbar. Its filamentous structure has a small light-shielding area, which reduces the blocking of heating light and ensures the heating intensity and heating uniformity of the busbar.

[0066] Regarding the order of feeding the busbar and the battery cell, the busbar can be fed to the welding area 31 of the welding panel 3 first, and then the welding end of the battery cell can be fed to the welding area 31 of the welding panel 3, so that the grid line welding strip is located above the busbar. During welding, the pressure welding wire 1 directly presses the grid line welding strip and indirectly presses the busbar. That is, the pressure welding wire 1 presses the busbar with the help of the grid line welding strip.

[0067] Alternatively, the welding end of the battery cell can be fed to the welding area 31 of the welding panel 3 first, and then the busbar can be fed to the welding area 31 of the welding panel 3. The busbar fed later is located above the grid line welding strip. During welding, the pressure welding wire 1 directly presses the busbar grid line welding strip and indirectly presses the grid line welding strip.

[0068] For grid wire bonding strips, which are conductive metal strips connecting the power generation areas of the solar cells, they are typically tin-plated copper strips with a width of 0.5-2mm. Busbars are conductive metal strips, such as copper conductive strips, with a width of 2-10mm and a thickness of 0.15-1mm.

[0069] Furthermore, the busbar welding device also includes a welding cover, which is mounted on the bracket 2.

[0070] Of course, the bracket 2 itself can be configured as a protective cover, covering the welding lamp assembly 4 from top to bottom; that is, the bracket 2 is a welding cover. When heating the busbar, the welding cover reduces heat dissipation, improves heating efficiency, reduces energy loss, and lowers energy consumption.

[0071] Taking bracket 2 as the welding cover as an example, the welding lamp assembly 4 is set inside the welding cover. Driven by the drive mechanism 5, the welding lamp assembly 4 moves with the welding cover above the welding panel 3, thereby heating the busbar. The two ends of the welding wire 1 are respectively set at both ends of the welding cover. The drive mechanism 5 is connected to the welding cover via a mounting bracket, thereby driving the welding cover and moving the welding wire 1 towards the welding panel 3, so that the welding wire 1 presses the busbar with a preset pressure. The preset pressure range is preferably 0.3~8N / mm. 2 Such pressure can maintain good pressure between the busbar and the grid wire solder strip, maintain stable contact, and improve the welding effect.

[0072] In some embodiments of the welding panel 3, a heating structure is provided within the welding panel 3 for heating the welding area 31. Specifically, the heating structure may be a plurality of heating rods 65, and a plurality of mounting holes are provided on the side of the welding panel 3, into which the heating rods 65 extend. By heating the welding panel 3 or the welding area 31 with the heating rods 65, the grid wire solder strip and busbar can be heated from the bottom, thereby maintaining a good temperature environment during welding. Of course, to facilitate temperature control of the welding panel, a temperature sensor 66, such as a thermocouple or a thermistor, is also provided within the welding panel 3. The temperature sensor 66 senses the internal temperature of the welding panel and controls the welding panel to maintain a suitable temperature value or range.

[0073] In some embodiments of busbar welding devices, such as Figure 5 , Figure 6As shown, the bracket 2 is equipped with an adaptive adjustment mechanism 8, which is connected to the welding wire 1. The adaptive adjustment mechanism 8 is used to pull the welding wire 1 to continuously output pressure to the busbar and adapt to the pressure generated by different pre-pressure strokes, so that the welding wire 1 maintains a continuous, stable and appropriate pressure on the busbar.

[0074] In some embodiments, the adaptive adjustment mechanism 8 may be a first elastic element 83, such as a spring or sheet, that is mounted on the support 2 and connected to one end of the welding wire 1. Thus, the continuous tension exerted by the first elastic element 83 on the welding wire 1 maintains a continuous, stable, and appropriate pressure on the welding wire 1.

[0075] In other embodiments of the adaptive adjustment mechanism 8, such as Figure 7 As shown, the adaptive adjustment mechanism 8 includes a first fixed block 81, a first sliding member 82, a first elastic member 83, and a first adjusting screw 84. Of course, one or two sets of adaptive adjustment mechanisms 8 can be provided, and the adaptive adjustment mechanism 8 is located at the end of the bracket 2. Specifically, the first fixed block 81 is located at the end of the bracket 2 and has a sliding groove. The first sliding member 82 is slidably disposed on the first fixed block 81, specifically within the sliding groove. The first elastic member 83 is connected to the first sliding member 82; specifically, the first elastic member 83 is a spring, and the spring continuously applies tension to the first sliding member 82. The welding wire 1 is connected to the first sliding member 82, and the welding wire 1 and the first elastic member 83 pull the first sliding member 82 in opposite directions. The spring continuously applies tension to the first sliding member 82, maintaining appropriate tension on the welding wire 1.

[0076] Furthermore, such as Figure 7 As shown, the adaptive adjustment mechanism 8 also includes a first adjusting screw 84. The first end of the first adjusting screw 84 passes through a through hole into the first fixing block 81, and the first end of the first adjusting screw 84 extends into a sliding groove. The axis of the first adjusting screw 84 is in the same direction as the length of the sliding groove. The end of the first adjusting screw 84 extending into the sliding groove is threadedly connected to the first sliding member 82. A first elastic member 83 is sleeved on the second end of the first adjusting screw 84. One end of the first elastic member 83 abuts against the first fixing block 81, and the second end of the first elastic member 83 abuts against the nut portion of the first adjusting screw 84. Thus, the first elastic member 83 applies tension to the first sliding member 82 through the first adjusting screw 84, and the first sliding member 82 pulls the welding wire 1, thereby maintaining a suitable tension on the welding wire 1. More importantly, the position of the first sliding member 82 can be adjusted by the first adjusting screw 84, adjusting the tension of the welding wire 1 so that the welding wire 1 can adapt to different pressure requirements and different welding conditions.

[0077] In some embodiments of the preload adjustment of the adaptive adjustment mechanism 8, the preload adjustment of the first elastic element 83 relies on a manually adjusting screw, which is difficult to control precisely. In this embodiment, the first adjusting screw 84 is connected to a pressure sensor to provide real-time feedback of the pressure value to the control system. Alternatively, the first adjusting screw 84 can be connected to a motor, such as a pneumatic motor or a servo motor, which drives the first adjusting screw 84 to rotate, thereby replacing manual adjustment and automatically and precisely controlling the preload adjustment of the first elastic element 83, improving the level of automatic pressure regulation.

[0078] In some embodiments of fixing the welding wire 1, the two ends of the welding wire 1 are respectively disposed at the two ends of the bracket 2, and at least one auxiliary fixing point is provided in the middle of the welding wire 1. The auxiliary fixing point is elastically or fixedly connected to the bracket 2. Specifically, as shown in... Figure 4 , Figure 8 As shown, the auxiliary fixing point can be the clamping mechanism 9.

[0079] In some embodiments of busbar welding devices, such as Figure 5 , Figure 6 As shown, the support 2 is equipped with a clamping mechanism 9, which abuts against the middle of the welding wire 1. When the grid wires are above the busbar, the welding wire 1 abuts against multiple grid wires; or when the busbar is above the grid wires, the welding wire 1 abuts against the busbar. The multiple abutments of the welding wire 1 against the grid wires or busbar will cause yielding to the middle position, which will weaken the pressure of the middle of the welding wire 1 on the busbar or grid wires. The clamping mechanism 9 abuts against the middle of the welding wire 1, so that the middle area of ​​the welding wire 1 can also maintain the downward pressure of the welding wire 1, and the busbar and grid wires maintain stable contact during the welding process. In addition, during the welding process, the busbar and grid wires are prone to thermal deformation. The welding wire 1 can maintain the contact pressure between the busbar and grid wires during thermal deformation, avoid gaps, and improve the welding effect.

[0080] The specific number of clamping mechanisms 9 can be set as one set or several sets.

[0081] Furthermore, the clamping mechanism 9 can specifically be a spring sheet, one end of which is connected to the bracket 2, and the other end of which extends above the welding wire 1. The other end of the spring sheet abuts against the welding wire 1 and applies pressure to it. When the welding wire 1 presses down on the busbar or grid welding lamp, the spring sheet presses against the welding wire 1, thereby maintaining downward pressure in the middle of the welding wire 1. In addition, the elastic contact of the spring sheet allows it to maintain good downward pressure adaptability and be suitable for a wider range of downward pressure strokes.

[0082] The clamping mechanism 9 can also be a fixed pressing member. One end of the pressing member is connected to the bracket 2, and the other end of the pressing member extends above the welding wire 1. The other end of the pressing member abuts against the welding wire 1 and applies pressure to the welding wire 1. When the welding wire 1 presses down on the busbar or grid welding lamp, the pressing member presses against the welding wire 1, thereby maintaining downward pressure in the middle of the welding wire 1.

[0083] like Figure 8 As shown, the clamping mechanism 9 may further include a second fixing block 91, a second sliding member 92, a second elastic member 93, a second adjusting screw 94, and a pressure rod 95. The second fixing block 91 is disposed on the side of the bracket 2 in the middle or near the middle. The second sliding member 92 is slidably disposed on the second fixing block 91. One end of the second adjusting screw 94 is optionally connected to a protruding part on the second fixing block 91, and the other end of the second adjusting screw 94 is threadedly connected to the second sliding member 92. The second elastic member 93 is sleeved on the second adjusting screw 94 and is located between the second sliding member 92 and the protruding part on the second fixing block 91. One end of the pressure rod 95 is connected to the second sliding member 92, and the other end of the pressure rod 95 extends above the welding wire 1. The other end of the pressure rod 95 presses down on the welding wire 1 from above, so that the middle area of ​​the welding wire 1 can also maintain the downward pressure of the welding wire 1.

[0084] Furthermore, the pressure rod 95 is provided with a heat insulation structure to block heat transfer. Specifically, the pressure rod 95 itself can be a heat insulation structure. Alternatively, a portion of the pressure rod 95 may have a heat insulation structure, such as a layered heat insulation structure, i.e., a heat insulation pad or a heat insulation coating, on the contact surface between the pressure rod 95 and the welding wire 1. Or, the entire end of the pressure rod 95 may be a heat insulation structure.

[0085] For thermal insulation structures, the structure is made of high-temperature resistant and low-thermal-conductivity materials. Specific materials can be ceramic materials, such as alumina ceramics, silicon nitride ceramics, etc. The aforementioned ceramic materials have extremely low thermal conductivity, which prevents heat from being conducted to other components. They are resistant to high temperatures (up to 1600℃ or higher), have excellent stability under infrared radiation, high hardness, and wear resistance, and are suitable for long-term pressure resistance against elastic wires.

[0086] The materials for the thermal insulation structure can also be high-temperature engineering plastics, ceramic fiber reinforced composites, etc. High-temperature engineering plastics can specifically include polyetheretherketone (PEEK) and polyimide. These high-temperature engineering plastics have extremely low thermal conductivity, providing effective thermal insulation. They are lightweight and easy to process into complex shapes. They have high elastic modulus, making them suitable for pressure-resistant applications. Ceramic fiber reinforced composites can be resin-based composites filled with ceramic fibers (such as SiO or AlO fibers). They have low thermal conductivity and excellent thermal insulation performance. They can withstand temperatures above 800℃, and their strength can be adjusted by the fiber ratio, making them suitable as thermal insulation pads for pressure-resistant welding wire 1.

[0087] The thermal insulation structure can also be a composite structure, consisting of an inner layer and an outer layer. The inner layer is a high-temperature resistant supporting structure, for example, the inner layer material is stainless steel, and the outer material is a thermal insulation coating. The stainless steel is high-temperature resistant and provides strength support, and the thermal insulation coating can be a coating made of the aforementioned ceramic material.

[0088] In some embodiments of the bonding wire 1, the bonding wire 1 is a wire structure made of a high-temperature resistant material. Preferably, it has non-stick properties, that is, the bonding wire is a high-temperature resistant non-stick wire. The bonding wire 1 can be a high-temperature resistant metallic material, such as titanium, molybdenum, chromium, nickel, tungsten, etc., and their alloys, or it can be a non-metallic material, such as a high-temperature wire.

[0089] Of course, the welding wire 1 can also be a composite structure, specifically including a centerline layer and an outer coating. The centerline layer is a high-temperature resistant material layer, including high-temperature resistant metal materials, high-temperature wire, etc., wherein the high-temperature resistant metal materials include, but are not limited to, titanium, molybdenum, chromium, nickel, tungsten and their alloys. The outer coating is a non-stick coating, which is a coating made of non-stick materials, specifically including polytetrafluoroethylene coatings, ceramic coatings, etc.

[0090] Regarding the diameter of the welding wire 1, generally, smaller diameter welding wire 1 (such as 0.1mm-1.0mm) is suitable for thin busbars, while larger diameter welding wire 1 (such as 1.0mm-3.0mm) is suitable for thick busbars.

[0091] The number of welding wires 1 can be set to one, two, three, four, or more. The number of welding wires 1 should be determined according to the width of the busbar and the size of the welding area 31. Typically, there are 2-5 welding wires 1 per row. When there are at least two welding wires 1, two of them are arranged in an X-shape or in parallel. When the two welding wires 1 are arranged in parallel, it facilitates the equalization of pressure on both sides of the busbar and prevents one side of the busbar from tilting up.

[0092] In some embodiments of the welding lamp assembly 4, such as Figure 6 As shown, the welding lamp assembly 4 includes a heat radiation source and a lamp holder 42 disposed at the end of the heat radiation source. Specifically, the heat radiation source may be a lamp tube 41, a laser array, a microwave heater, etc. The lamp holder 42 is connected to the support 2, or the lamp holder 42 is disposed inside the lamp cover, and the lamp tube 41 is disposed between the two sets of lamp holders 42. The lamp tube 41 may be an infrared emitting tube or an ultraviolet emitting tube.

[0093] In some embodiments of the lampshade, such as Figure 9As shown, a light-shielding plate 21 is provided at the bottom of the lampshade, and a light-transmitting hole 211 is provided on the light-shielding plate 21, which is correspondingly arranged with the welding area 31. The light-transmitting hole 211 on the light-shielding plate 21 concentrates the light onto the busbar of the welding area 31, while blocking the light emitted from other directions, preventing excess light from shining on other positions of the grid wire solder strip, and preventing other welded parts from being heated and desoldered.

[0094] In some embodiments of the soldering lamp assembly 4, the soldering lamp assembly 4 includes a temperature control component and a heat radiation source. Specifically, the heat radiation source can be an infrared emitting tube, an ultraviolet emitting tube, a laser array, a microwave heater, etc. Taking an infrared emitting tube as an example, the temperature control component is electrically connected to the infrared emitting tube and is used to control the power output of the infrared emitting tube. By setting the temperature control component, the output power of the infrared emitting tube can be adjusted, which facilitates precise control of the soldering temperature and has good adaptability to different solders and soldering requirements.

[0095] Furthermore, the temperature control component includes an isolation module and an analog controller. The analog controller is electrically connected to the isolation module to control its isolated output. The isolation module is electrically connected to the infrared emitting diode to control its power output. By incorporating the isolation module and analog controller, signal isolation protection is enhanced, anti-interference capabilities are improved, multi-channel signal isolation processing is implemented, the coordinated control effect of multiple infrared emitting diodes is improved, power control stability is guaranteed, welding results are stabilized, and welding consistency is improved.

[0096] In some embodiments of busbar welding devices, such as Figure 5 As shown, the busbar welding device also includes a gantry and a mounting bracket. The gantry spans across the conveyor table 6, the drive mechanism 5 is mounted on the gantry, and the mounting bracket is mounted on the drive mechanism 5.

[0097] For the drive mechanism 5, in some embodiments, such as Figure 9 As shown, the drive mechanism 5 includes a drive motor 51, a lead screw 52, ​​a nut 53, a slider 54, and a mounting plate 55. The mounting plate 55 is vertically mounted on the gantry frame. The slider 54 is slidably mounted on one side of the mounting plate 55, and the lead screw 52 is vertically mounted on the other side of the mounting plate 55. The drive motor 51 is connected to the lead screw 52. The nut 53 is sleeved on the lead screw 52 and threadedly connected to it. The nut 53 is also connected to the slider 54. The mounting frame is connected to the slider 54. The aforementioned bracket 2, or welding cover, is mounted on the mounting frame. In this embodiment, the drive motor 51 drives the lead screw 52 to rotate. The lead screw 52, ​​through its threaded connection with the nut 53, causes the nut 53 to rise and fall along the lead screw 52. The nut 53 causes the slider 54 to rise and fall. The slider 54, through the mounting frame, causes the bracket 2 to rise and fall, thereby enabling the welding lamp assembly, wire pressing and heat dissipation device, and other structures to perform lifting and lowering movements.

[0098] In some embodiments of the busbar welding device, the device further includes a moving platform, which comprises at least one of an X-axis platform and a Y-axis platform. For example, the moving platform includes an X-axis platform, specifically connected to the aforementioned gantry, which drives the gantry to move along the X-axis. Alternatively, the moving platform includes a Y-axis platform, specifically connected to the aforementioned gantry, which drives the gantry to move along the Y-axis. Yet another example is a moving platform comprising both an X-axis platform and a Y-axis platform, with the X-axis platform positioned on the Y-axis platform and the aforementioned gantry positioned on the X-axis platform, thus enabling the gantry to move along either the X-axis or Y-axis direction via the X-axis and Y-axis platforms.

[0099] Of course, the aforementioned welding lamp assembly is mounted on bracket 2, and bracket 2 is mounted on the moving platform. Specifically, bracket 2 is mounted on a mounting frame, the mounting frame is mounted on a gantry frame, and the gantry frame is mounted on the moving platform, that is, bracket 2 is indirectly mounted on the moving platform.

[0100] In some embodiments of busbar welding devices, such as Figure 2 , Figure 6 , Figure 7 As shown, the busbar soldering device also includes a heat dissipation device 10, which is mounted on the soldering cover. The air outlet or inlet of the heat dissipation device 10 faces the soldering area 31, or the air outlet or inlet of the heat dissipation device 10 faces the busbar on the soldering area 31. The heat dissipation device 10 is used to dissipate heat from the busbar soldering device and the busbar after soldering. Specifically, the heat dissipation device 10 includes several cooling fans mounted on the soldering cover. The cooling fans can pump airflow from inside the soldering cover or pump airflow into the soldering cover. That is, the air outlet or inlet of the cooling fans faces the soldering area 31. At the same time, external air enters the soldering cover and some airflow passes through the busbar, thereby dissipating heat from the busbar. This can quickly cool the solder, solidify the solder joint between the busbar and the grid line solder strip, and prevent separation and desoldering between the busbar and the grid line solder strip when the support 2 drives the bonding wire 1 away from the soldering panel 3.

[0101] During heat dissipation, since the welding cover is close to the welding panel 3, a gap is formed between the welding cover and the welding panel 3. The welding cover guides the airflow through the aforementioned gap and into the interior of the welding cover. In this way, the airflow can pass through the busbar more quickly, thus forming a good heat dissipation channel, improving heat dissipation efficiency, and accelerating the cooling speed of the busbar.

[0102] For the aforementioned welded panel 3, as Figure 1 , 2 and Figure 3As shown, the busbar welding device also includes a conveyor table 6, which includes a support panel 61, two sets of roller assemblies 62, and a conveyor belt 63 for conveying the battery cells to be welded. The support panel 61 is disposed between the two sets of roller assemblies 62, and the conveyor belt 63 passes around the two sets of roller assemblies 62, with the upper edge of the conveyor belt 63 passing over the upper surface of the support panel 61. At least one set of roller assemblies is an actively driven structure. The upper surface of the support panel 61 is provided with a negative pressure groove 611, and a negative pressure pipe 64 is connected to the support panel 61, communicating with the negative pressure groove 611. The conveyor belt 63 is provided with suction holes 631, and the conveyor belt 63 passes through the negative pressure groove 611 during movement. In this way, the negative pressure groove 611 can attract the battery cells on the conveyor belt 63 through the suction holes 631, so that the battery cells can be stably conveyed on the conveyor belt 63.

[0103] The support panel 61 is the aforementioned welded panel 3, or the conveyor belt 63 can be the aforementioned welded panel 3, or the entire conveyor table 6 can be the aforementioned welded panel 3.

[0104] In some further embodiments of the conveyor 6, such as Figure 5 As shown, a heating rod 65 is disposed inside the support panel 61 for heating the support panel 61, and a temperature sensor 66 is disposed inside the support panel 61.

[0105] Optionally, the conveyor belt 63 is a high-temperature resistant conveyor belt, specifically a Teflon conveyor belt or a ceramic mesh belt with lights.

[0106] like Figure 4 As shown, the welding panel 3 can be located on the welding table 7. The busbar welding device also includes the welding table 7 and the conveyor table 6. The welding table 7 is located at the end of the conveyor table 6, and the welding panel 3 is provided on the welding table 7.

[0107] Furthermore, such as Figure 5 As shown, the welding table 7 is a height-adjustable welding table, specifically including a telescopic cylinder 71, a connecting rod 72 and a welding panel 3. The connecting rod 72 is located at the bottom of the welding panel 3, and the telescopic cylinder 71 is located at the bottom of the connecting rod 72. The telescopic cylinder 71 drives the connecting rod 72 to perform a lifting and lowering movement, thereby causing the welding panel 3 to perform a lifting and lowering movement.

[0108] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A busbar welding device, characterized in that, include: Welding wire, bracket, welding panel, welding lamp assembly and drive mechanism; The welding panel is provided with a welding area for supporting the busbar; The welding lamp assembly is positioned above the welding panel and is used to heat the busbar; The two ends of the welding wire are respectively disposed at the two ends of the bracket, and the length direction of the welding wire is consistent with the length direction of the busbar, which is used to press the busbar tightly during welding; The drive mechanism is connected to the bracket and is used to drive the bracket to move the welding wire toward the welding panel, so that the welding wire presses the busbar with a preset pressure.

2. The busbar welding device according to claim 1, characterized in that, The busbar welding device further includes a welding cover, which is disposed on the bracket; Alternatively, the support can be a welded cover.

3. The busbar welding device according to claim 1, characterized in that, The welding panel is equipped with a heating structure for heating the welding area.

4. The busbar welding device according to claim 1, characterized in that, The bracket is equipped with an adaptive adjustment mechanism, which is connected to the welding wire and is used to pull the welding wire to continuously output pressure to the busbar and adapt to the pressure generated by different pre-pressure strokes.

5. The busbar welding device according to claim 4, characterized in that, The adaptive adjustment mechanism includes a first fixed block, a first sliding member, and a first elastic member. The first fixed block is disposed on the bracket, the first sliding member is slidably disposed on the first fixed block, and the first elastic member is connected to the first sliding member. The welding wire is connected to the first sliding member, and the welding wire and the first elastic member respectively pull the first sliding member in opposite directions.

6. The busbar welding device according to claim 1, characterized in that, The bracket is equipped with a clamping mechanism, which abuts against the middle of the welding wire to maintain the downward pressure of the welding wire.

7. The busbar welding device according to claim 6, characterized in that, The clamping mechanism is provided with a pressure rod for clamping the welding wire, and the pressure rod is provided with a heat insulation structure for blocking heat transfer.

8. The busbar welding device according to claim 1, characterized in that, When the number of welding wires is at least two, the two welding wires are arranged in an X-shape or in parallel.

9. The busbar welding device according to claim 1, characterized in that, The welding lamp assembly includes a temperature control component and a heat radiation source. The temperature control component is electrically connected to the heat radiation source and is used to control the power output of the heat radiation source.

10. The busbar welding device according to claim 9, characterized in that, The temperature control component includes an isolation module and an analog controller; The analog controller is electrically connected to the isolation module to control the isolation output of the isolation module; The isolation module is electrically connected to the thermal radiation source and is used to control the power output of the thermal radiation source.

11. The busbar welding device according to claim 1, characterized in that, The welding wire includes a centerline layer and an outer coating layer. The centerline layer is a high-temperature resistant material layer, and the outer coating layer is a non-stick coating. The welding wire is a high-temperature resistant, non-sticky wire.

12. The busbar welding device according to claim 1, characterized in that, The busbar welding device further includes a moving platform, which includes at least one of an X-axis platform and a Y-axis platform; The welding lamp assembly is mounted on the bracket, and the bracket is mounted on the mobile platform.

13. The busbar welding device according to claim 2, characterized in that, The busbar welding device also includes a heat dissipation device, which is disposed on the welding cover. The air outlet or air inlet of the heat dissipation device faces the welding area and is used to dissipate heat from the busbar welding device and the busbar after welding.

14. The busbar welding apparatus according to any one of claims 1 to 13, characterized in that, The busbar welding device further includes a conveyor table, which is the welding panel; or The busbar welding device further includes a conveyor table, which comprises a support panel and a conveyor belt for conveying the battery cells to be welded. The conveyor belt wraps around the upper surface of the support panel, which serves as the welding panel; or The busbar welding device further includes a conveyor table, which comprises a support panel and a conveyor belt for conveying the battery cells to be welded. The conveyor belt wraps around the upper surface of the support panel and serves as the welding panel; or The busbar welding device also includes a welding table, on which the welding panel is provided.

15. The busbar welding device according to claim 14, characterized in that, The conveyor belt is a high-temperature resistant conveyor belt.

16. The busbar welding device according to claim 1, characterized in that, The welding wire has at least one auxiliary fixing point in the middle, and the auxiliary fixing point is elastically or fixedly connected to the bracket.

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