Stacked gate battery welding device
By designing a welding device for stacked grid cells and using a detection module for deviation compensation and alignment welding, the problem of high failure rate of seed layer and conductive wire welding was solved, thus improving the yield of stacked grid cells.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGWEI SOLAR ENERGY (CHENGDU) CO LID
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-05
AI Technical Summary
The high rate of poor solder joints between the seed layer and the conductive wires in existing stacked grid cells leads to low yield.
A welding device for stacked grid cells is designed, including an adsorption module, a wire winding module, a detection module, and a welding module. The device detects the position of the conductive wire and the cell, performs deviation compensation, and welds the conductive wire to the seed layer during alignment.
It effectively reduces the rate of poor soldering between the conductive wire and the seed layer, thereby improving the yield of stacked grid cells.
Smart Images
Figure CN224196319U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic modules, and in particular to a welding device for stacked grid cells. Background Technology
[0002] Against the backdrop of the global push for carbon neutrality, my country's photovoltaic (PV) industry has gone through four stages: initial development, growth, decline, and recovery, and has now entered a period of steady growth. Throughout this process, cost reduction and efficiency improvement have remained the core themes of the PV industry's development. Stacked-grid solar cells, as an emerging semiconductor metallization technology and battery pack series technology, employ a method of preparing a seed layer on the surface of the cell and welding ultra-fine triangular conductive wires with ultra-high surface reflectivity onto this seed layer to collect current from the cell surface. However, existing stacked-grid solar cells suffer from a high rate of poor solder joints between the seed layer and the conductive wires, reducing the yield of the stacked-grid solar cells. Utility Model Content
[0003] Therefore, it is necessary to provide a welding device for stacked grid cells to address the problem of high failure rate of solder joints between the seed layer and conductive wires in existing stacked grid cells, which reduces the yield of stacked grid cells.
[0004] The technical solution is as follows:
[0005] On one hand, a stacked-grid battery welding apparatus is provided for welding conductive wires to the seed layer of a battery cell, the stacked-grid battery welding apparatus comprising:
[0006] The adsorption module includes a roller, a first fixing and cutting mechanism, and a second fixing and cutting mechanism. The roller is controlled to rotate around its own axis. The outer side wall of the roller is provided with a fixing part for fixing the battery cell. The first fixing and cutting mechanism and the second fixing and cutting mechanism are both mounted on the roller and are respectively located on both sides of the fixing part along the axial direction of the roller. The first fixing and cutting mechanism and the second fixing and cutting mechanism are both used to fix and cut the conductive wire.
[0007] A wire winding module is located outside the roller and includes a first driving mechanism and a wire winding mechanism. The first driving mechanism is connected to the wire winding mechanism and is used to drive the wire winding mechanism to reciprocate along the axial direction of the roller. The wire winding mechanism has a starting position and is used to move the conductive wire to the first fixed cutting mechanism when the wire winding mechanism is in the starting position, and to work in conjunction with the roller to spirally wind the conductive wire onto the roller when the first fixed cutting mechanism fixes the conductive wire, and the conductive wire also winds through the second fixed cutting mechanism.
[0008] A detection module is located on the outside of the roller. The detection module is communicatively connected to the first drive mechanism and is used to detect the position of the conductive wire and the battery cell on the roller, and to adjust the first drive mechanism according to the position of the conductive wire and the battery cell.
[0009] A welding module, located on the outside of the roller, is used to weld the conductive wire to the seed layer when the conductive wire is aligned with the seed layer.
[0010] In the above-described embodiment of the stacked-grid battery welding device, the battery cells are first placed on the fixing part, which then fixes the battery cells to a preset position on the roller. Next, the first driving mechanism drives the wire winding mechanism to the starting position. The wire winding mechanism moves the conductive wire to the first fixed cutting mechanism, which fixes the conductive wire and cuts off any conductive wire extending beyond the first fixed cutting mechanism. Then, the roller rotates under control, and the first driving mechanism drives the wire winding mechanism to move, so that the wire winding mechanism is linked with the roller to spirally wind the conductive wire onto the roller. When the conductive wire passes the second fixed cutting mechanism, the second fixed cutting mechanism fixes the conductive wire and cuts it off. Simultaneously, the detection module detects the position of the conductive wire and the battery cells on the roller and adjusts the first driving mechanism accordingly to compensate for deviations, ensuring that the conductive wire is aligned with the seed layer when spirally wound onto the roller. Finally, when the conductive wire on the roller is aligned with the seed layer, the welding module welds the conductive wire to the seed layer of the cell, effectively reducing the rate of poor soldering between the conductive wire and the seed layer and improving the yield of stacked grid cells.
[0011] The technical solution will be further explained below:
[0012] In one embodiment, the detection module is configured to detect the position of the battery cell on the roller when the battery cell is fixed to the fixing part, and to detect the position of the conductive wire relative to the seed layer after the conductive wire is spirally wound onto the roller.
[0013] In one embodiment, the detection module is configured to detect the position of the conductive wire relative to the seed layer in real time as the winding mechanism is linked with the roller to spirally wind the conductive wire onto the roller.
[0014] In one embodiment, both the first fixed cutting mechanism and the second fixed cutting mechanism include a driving member and a pressing member. The driving member is pulsatorically connected to the pressing member and is used to drive the pressing member to move radially along the roller to press the conductive wire onto the roller.
[0015] In one embodiment, both the first fixed cutting mechanism and the second fixed cutting mechanism further include a cutting member, which is mounted on the side of the clamping member along the spiral winding direction of the conductive wire and away from the fixing part, and is configured to cut the conductive wire when the clamping member presses the conductive wire onto the roller.
[0016] In one embodiment, the adsorption module further includes a limiting mechanism, which is installed on the outer side wall of the roller and is used to limit the engagement of the conductive wire. Along the spiral winding direction of the conductive wire, the limiting mechanism is located between the fixing part and the first fixing and cutting mechanism.
[0017] In one embodiment, the limiting mechanism includes a mounting body mounted on the outer side wall of the roller and two limiting posts spaced apart on the mounting body. The two limiting posts are configured to limit the corresponding sides of the conductive wire when the conductive wire spirals between the two limiting posts.
[0018] In one embodiment, the stacked battery welding apparatus further includes a robotic gripper for gripping the battery cell and placing it at the fixing portion.
[0019] In one embodiment, the welding module includes a preheating mechanism and a welding mechanism. The preheating mechanism is used to preheat the battery cell and the conductive wire when the conductive wire is aligned with the seed layer. The welding mechanism is used to weld the conductive wire to the seed layer after the battery cell and the conductive wire have been preheated.
[0020] In one embodiment, the preheating mechanism includes an infrared lamp for preheating the battery cell and the conductive wire, and the welding mechanism includes a laser for welding the conductive wire to the seed layer. Attached Figure Description
[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.
[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the structure of a stacked grid cell according to one embodiment.
[0024] Figure 2 This is a schematic diagram of the structure of a stacked grid cell according to one embodiment.
[0025] Figure 3 This is a schematic diagram of the structure of a stacked grid battery welding device according to one embodiment.
[0026] Figure 4 This is a schematic diagram of the structure of a stacked grid cell welding device according to another embodiment.
[0027] Figure 5 for Figure 4 A partial enlarged view of the first fixed cutting device and the limiting device.
[0028] Explanation of reference numerals in the attached figures:
[0029] 10. Stacked-grid battery welding device; 100. Adsorption module; 110. Roller; 120. First fixed cutting mechanism; 121. Driving component; 122. Pressing component; 130. Second fixed cutting mechanism; 140. Limiting mechanism; 141. Mounting body; 1411. Waist-shaped hole; 142. Limiting post; 200. Wire winding module; 210. First driving mechanism; 220. Wire winding mechanism; 221. Support platform; 222. Wire winding assembly; 223. Wire transfer assembly; 300. Detection module; 400. Welding module; 410. Preheating mechanism; 420. Welding mechanism; 500. Robot gripper; 600. Mounting platform; 20. Stacked-grid battery; 21. Battery cell; 211. Seed layer; 22. Conductive wire. Detailed Implementation
[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0031] like Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment, a stacked-grid battery welding apparatus 10 is provided for welding conductive wires 22 to the seed layer 211 of the battery cell 21. The stacked-grid battery welding apparatus 10 includes an adsorption module 100, a wire winding module 200, a detection module 300, and a welding module 400.
[0032] like Figure 3 and Figure 4As shown, the adsorption module 100 includes a roller 110, a first fixing and cutting mechanism 120, and a second fixing and cutting mechanism 130. The roller 110 is controlled to rotate around its own axis. The outer side wall of the roller 110 is provided with a fixing part for fixing the battery cell 21. The first fixing and cutting mechanism 120 and the second fixing and cutting mechanism 130 are both mounted on the roller 110 and are respectively located on both sides of the fixing part along the axial direction of the roller 110. The first fixing and cutting mechanism 120 and the second fixing and cutting mechanism 130 are both used to fix and cut the conductive wire 22.
[0033] The wire winding module 200 is located outside the roller 110 and includes a first drive mechanism 210 and a wire winding mechanism 220. The first drive mechanism 210 is drively connected to the wire winding mechanism 220 and is used to drive the wire winding mechanism 220 to reciprocate along the axial direction of the roller 110. The wire winding mechanism 220 has a starting position and is used to move the conductive wire 22 to the first fixed cutting mechanism 120 when the wire winding mechanism 220 is in the starting position, and to be linked with the roller 110 when the first fixed cutting mechanism 120 fixes the conductive wire 22 to spirally wind the conductive wire 22 onto the roller 110, and the conductive wire 22 is also wound around the second fixed cutting mechanism 130.
[0034] The detection module 300 is located on the outside of the roller 110. The detection module 300 is communicatively connected to the first drive mechanism 210 and is used to detect the position of the conductive wire 22 and the battery cell 21 on the roller 110, and to adjust the first drive mechanism 210 according to the position of the conductive wire 22 and the battery cell 21.
[0035] The welding module 400 is located on the outside of the roller 110 and is used to weld the conductive wire 22 to the seed layer 211 when the conductive wire 22 is aligned with the seed layer 211.
[0036] In the above embodiment, the stacked grid battery welding device 10, when in use, first places the battery sheet 21 onto the fixing part so that the fixing part fixes the battery sheet 21 at a preset position on the roller 110. Next, the first driving mechanism 210 drives the wire winding mechanism 220 to move to the starting position. The wire winding mechanism 220 moves the conductive wire 22 to the first fixed cutting mechanism 120. The first fixed cutting mechanism 120 fixes the conductive wire 22 and cuts off the conductive wire 22 that is about to extend out of the first fixed cutting mechanism 120. Then, the roller 110 is rotated under control, and the first drive mechanism 210 drives the winding mechanism 220 to move, so that the winding mechanism 220 is linked with the roller 110 to spirally wind the conductive wire 22 onto the roller 110. When the conductive wire 22 passes the second fixed cutting mechanism 130, the second fixed cutting mechanism 130 fixes the conductive wire 22 and cuts off the conductive wire 22 extending out of the second fixed cutting mechanism 130. At the same time, the detection module 300 detects the position of the conductive wire 22 and the battery cell 21 on the roller 110, and adjusts the first drive mechanism 210 accordingly to compensate for the deviation, so that when the conductive wire 22 spirally winds onto the roller 110, it is aligned with the seed layer 211. Finally, when the conductive wire 22 on the roller 110 is aligned with the seed layer 211, the welding module 400 welds the conductive wire 22 to the seed layer 211 of the cell 21, effectively reducing the rate of poor soldering between the conductive wire 22 and the seed layer 211 and improving the yield of the stacked grid cell 20.
[0037] The adsorption module 100 can be configured as any existing structure capable of fixing the battery cell 21 and spirally winding it in conjunction with the winding mechanism 220. The number of fixing parts can be flexibly adjusted according to actual needs. Specifically, in this embodiment, there are at least two fixing parts, which are spaced apart circumferentially along the roller 110. The fixing parts can be provided with adsorption holes arranged in a linear array, rectangular array, or other shaped array. Each adsorption hole is connected to a vacuum pump.
[0038] Specifically, in this embodiment, the first fixed cutting mechanism 120, the second fixed cutting mechanism 130, and all fixing parts located between the first fixed cutting mechanism 120 and the second fixed cutting mechanism 130 cooperate to form an adsorption structure. Two sets of adsorption structures are provided on the roller 110 along the axial direction of the roller 110. The number of winding modules 200 is the same as the number of adsorption structures, and each winding module 200 is correspondingly arranged with each adsorption structure.
[0039] Specifically, in this embodiment, the adsorption module 100 further includes a second driving mechanism, which is connected to the roller 110 in a transmission manner and is used to drive the roller 110 to rotate around its own axis. The detection module 300 is also communicatively connected to the second driving mechanism and is used to adjust the second driving mechanism according to the positions of the conductive wire 22 and the battery cell 21 to perform deviation compensation.
[0040] The winding mechanism 220 can be configured as any of the prior art capable of moving the conductive wire 22 to the first fixed cutting mechanism 120 and being able to be linked with the roller 110 to spirally wind the conductive wire 22 onto the roller 110. Specifically, in this embodiment, the winding mechanism 220 includes a support platform 221 connected to the first driving mechanism 210, a winding assembly 222 mounted on the support platform 221, and a wire transfer assembly 223 mounted on the support platform 221. The wire transfer assembly 223 is configured to move the conductive wire 22 to the first fixed cutting mechanism 120 when the winding mechanism 220 is in the starting position. The winding assembly 222 is configured to be linked with the roller 110 to spirally wind the conductive wire 22 onto the roller 110 when the first fixed cutting mechanism 120 fixes the conductive wire 22, and the conductive wire 22 also winds through the second fixed cutting mechanism 130.
[0041] Specifically, in this embodiment, the second driving mechanism drives the roller 110 to rotate at a constant speed. The first driving mechanism 210 drives the winding mechanism 220 to move at a constant speed. During the winding process, the winding mechanism 220 and the winding position of the conductive wire 22 on the roller 110 move synchronously to ensure the uniformity of the pitch when the conductive wire 22 is spirally wound onto the roller 110.
[0042] It should be noted that the alignment of the conductive wire 22 with the seed layer 211 means that the conductive wire 22 and the designated position on the seed layer 211 are in contact and adhered.
[0043] The detection module 300 can be configured as any existing technology capable of detecting the position of the conductive wires 22 and battery cells 21 on the roller 110, and adjusting the first drive mechanism 210 and / or the second drive mechanism accordingly to compensate for deviations based on the detection results. The detection module 300 can communicate with the first drive mechanism 210 and the second drive mechanism via data cable, power cable, Bluetooth, or other means. Specifically, in this embodiment, the detection module 300 includes an imaging device (e.g., a high-speed industrial camera or a high-precision CCD camera) and a vision positioning system. The imaging device is used to take pictures of the conductive wires 22 and battery cells 21 on the roller 110 and feed them back to the vision positioning system. The visual positioning system determines the positional relationship between the conductive wire 22 and the seed layer 211 of the battery cell 21. When the conductive wire 22 and the seed layer 211 are not aligned, the visual positioning system will generate a corresponding compensation signal and send it to the first drive mechanism 210 and / or the second drive mechanism. The first drive mechanism 210 and / or the second drive mechanism will adjust accordingly to compensate for the deviation and ensure that the conductive wire 22 and the seed layer 211 are aligned.
[0044] It should be noted that the detection module 300 can perform real-time detection simultaneously during the winding process, or it can perform detection before and after the winding process.
[0045] Optionally, the detection module 300 is configured to detect the position of the battery cell 21 on the roller 110 when the battery cell 21 is fixed to the fixing part, and to detect the position of the conductive wire 22 relative to the seed layer 211 after the conductive wire 22 is spirally wound onto the roller 110. Thus, detecting the position of the battery cell 21 on the roller 110 before winding ensures that the battery cell 21 is accurately fixed in the preset position on the roller 110, effectively reducing the overall offset of the conductive wire 22 and improving the accuracy of the alignment between the seed layer 211 and the conductive wire 22 of the battery cell 21 after winding. After winding, the position of the conductive wire 22 on the roller 110 and the seed layer 211 is detected. When the conductive wire 22 and the seed layer 211 are not aligned, the detection module 300 generates a compensation signal according to the detection result and sends it to the first drive mechanism 210. The first drive mechanism 210 adjusts the moving speed of the winding mechanism 220 to the matching speed according to the compensation signal to ensure that the conductive wire 22 is aligned with the seed layer 211 when it is spirally wound onto the roller 110.
[0046] Optionally, the detection module 300 is configured to detect the position of the conductive wire 22 relative to the seed layer 211 in real time during the process of the winding mechanism 220 and the roller 110 being linked to spirally wind the conductive wire 22 onto the roller 110. Thus, during the winding process, the detection module 300 can detect the position of the conductive wire 22 relative to the seed layer 211 in real time. When the conductive wire 22 is misaligned with the seed layer 211, the detection module 300 can promptly generate a compensation signal and send it to the first drive mechanism 210. The first drive mechanism 210 immediately adjusts the moving speed of the winding mechanism 220 according to the compensation signal to correct the position of the conductive wire 22 in a timely manner, ensuring that the conductive wire 22 is aligned with the seed layer 211 when spirally wound onto the roller 110.
[0047] like Figure 4 and Figure 5 As shown, in one embodiment, both the first fixed cutting mechanism 120 and the second fixed cutting mechanism 130 include a driving member 121 and a pressing member 122. The driving member 121 is tractively connected to the pressing member 122 and is used to drive the pressing member 122 to move radially along the roller 110 to press the conductive wire 22 onto the roller 110. Thus, when the winding mechanism 220 moves the conductive wire 22 to the first fixed cutting mechanism 120, the conductive wire 22 passes through the gap between the pressing member 122 and the outer wall of the roller 110. The driving member 121 drives the pressing member 122 to move radially along the roller 110 and closer to the roller 110, so that the pressing member 122 can stably and reliably press and fix the conductive wire 22 onto the roller 110. When it is necessary to release the clamping member 122 from the conductive wire 22, the driving member 121 can drive the clamping member 122 to move along the radial direction of the roller 110 and away from the roller 110. The operation is simple and convenient.
[0048] Optionally, both the first fixed cutting mechanism 120 and the second fixed cutting mechanism 130 further include a cutting element. The cutting element is mounted on the side of the clamping member 122 along the spiral winding direction of the conductive wire 22 and away from the fixing part, and is configured to cut the conductive wire 22 when the clamping member 122 presses the conductive wire 22 onto the roller 110. In this way, the cutting element and the clamping member 122 share the driving member 121, reducing the number of driving components and lowering the cost of the stacked grid battery welding device 10.
[0049] The driving component 121 can be configured as a telescopic cylinder, a telescopic motor, or other telescopic driving structure. The clamping component 122 can be configured as a clamping block, a clamping plate, or other clamping structure. The cutting component can be configured as a cutting blade or other cutting structure. In other embodiments, the cutting component and the clamping component 122 can also be driven by two third driving components 121 respectively.
[0050] like Figure 5 As shown, in one embodiment, the adsorption module 100 further includes a limiting mechanism 140. The limiting mechanism 140 is mounted on the outer wall of the roller 110 and is used to limit the engagement with the conductive wire 22. Along the spiral winding direction of the conductive wire 22, the limiting mechanism 140 is located between the fixing part and the first fixing and cutting mechanism. In this way, the limiting mechanism 140 can cooperate with the first fixing and cutting mechanism 120 to accurately and stably limit the starting point of the spiral winding of the conductive wire 22, and the starting point of the conductive wire 22 is fixed each time it spirals, ensuring that the conductive wire 22 will not deviate or twist when it spirals onto the roller 110, thereby improving the stability of the stacked grid battery welding device 10.
[0051] The limiting mechanism 140 can be configured as any structure in the prior art capable of limiting the conductive wire 22.
[0052] like Figure 5 As shown, the limiting mechanism 140 further includes a mounting body 141 mounted on the outer wall of the roller 110, and two limiting posts 142 spaced apart on the mounting body 141. The two limiting posts 142 are configured to engage with the opposite sides of the conductive wire 22 when the conductive wire 22 spirally winds between the two limiting posts 142. Thus, limiting is achieved through the two limiting posts 142, resulting in a simple and practical structure that is also easy to manufacture.
[0053] Specifically in this embodiment, the two limiting posts 142 are spaced apart along the axial direction of the roller 110 and are integrally formed with the mounting body 141.
[0054] Optionally, the outer wall of the roller 110 is provided with a mounting groove extending along the axial direction of the roller 110. The mounting body 141 is movably mounted in the mounting groove along the axial direction of the roller 110. The bottom wall of the mounting groove is provided with a threaded hole. The mounting body 141 is provided with a waist-shaped hole 1411 extending along the axial direction of the roller 110 and corresponding to the threaded hole. The limiting mechanism 140 also includes a fastening screw, which passes through the waist-shaped hole 1411 and is threadedly connected to the threaded hole to fix the mounting body 141 to the roller 110.
[0055] like Figure 3 As shown, in one embodiment, the stacked-grid battery welding apparatus 10 further includes a robotic gripper 500. The robotic gripper 500 is used to grip the battery cell 21 and place the battery cell 21 at the fixing part. In this way, the battery cell 21 can be accurately placed at the fixing part by the robotic gripper 500, improving the reliability and automation of the stacked-grid battery welding apparatus 10.
[0056] like Figure 3 As shown, optionally, the stacked grid battery welding device 10 also includes an installation platform 600, on which the adsorption module 100, the wire winding module 200, the detection module 300, the welding module 400 and the robot gripper 500 are all installed.
[0057] like Figure 3 As shown, in one embodiment, the welding module 400 includes a preheating mechanism 410 and a welding mechanism 420. The preheating mechanism 410 is used to preheat the battery cell 21 and the conductive wire 22 when the conductive wire 22 is aligned with the seed layer 211. The welding mechanism 420 is used to weld the conductive wire 22 to the seed layer 211 after the battery cell 21 and the conductive wire 22 have been preheated. Thus, by adopting the method of preheating before welding, it is beneficial to improve the uniformity of welding temperature, which can effectively solve the problems of incomplete welding and battery heat loss caused by large welding temperature differences, and improve the welding quality and yield of the stacked grid battery 20.
[0058] The preheating mechanism 410 can be configured as any existing structure capable of preheating the battery cell 21 and the conductive wire 22. The welding mechanism 420 can be configured as any existing structure capable of welding the conductive wire 22 to the seed layer 211 of the battery cell 21.
[0059] Optionally, the preheating mechanism 410 includes an infrared lamp for preheating the battery cell 21 and the conductive wire 22. The welding mechanism 420 includes a laser for welding the conductive wire 22 to the seed layer 211.
[0060] Specifically, in this embodiment, when the conductive wire 22 is aligned with the seed layer 211, the roller 110 is controlled to rotate at a speed of 0.5 r / min, and the battery cell 21 and the conductive wire 22 are preheated by infrared lamps at 150°C to 180°C. After preheating, a laser with a pulse width of less than or equal to 10 ms is used for line scanning welding. The laser temperature is between 220°C and 250°C, thereby reliably welding the conductive wire 22 onto the seed layer 211 of the battery cell 21.
[0061] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0062] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0063] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0064] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0065] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0066] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.
[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0068] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A stacked-grid battery welding apparatus for welding conductive wires (22) to the seed layer (211) of a battery cell (21), characterized in that, The stacked grid battery welding device (10) includes: The adsorption module (100) includes a roller (110), a first fixing and cutting mechanism (120), and a second fixing and cutting mechanism (130). The roller (110) is controlled to rotate around its own axis. The outer side wall of the roller (110) is provided with a fixing part for fixing the battery cell (21). The first fixing and cutting mechanism (120) and the second fixing and cutting mechanism (130) are both installed on the roller (110) and are respectively located on both sides of the fixing part along the axial direction of the roller (110). The first fixing and cutting mechanism (120) and the second fixing and cutting mechanism (130) are both used to fix and cut the conductive wire (22). The winding module (200) is located outside the roller (110) and includes a first drive mechanism (210) and a winding mechanism (220). The first drive mechanism (210) is connected to the winding mechanism (220) and is used to drive the winding mechanism (220) to reciprocate along the axial direction of the roller (110). The winding mechanism (220) has a starting position and is used to move the conductive wire (22) to the first fixed cutting mechanism (120) when the winding mechanism (220) is in the starting position, and to work in conjunction with the roller (110) to spirally wind the conductive wire (22) onto the roller (110) when the first fixed cutting mechanism (120) fixes the conductive wire (22). The conductive wire (22) also winds through the second fixed cutting mechanism (130). The detection module (300) is located on the outside of the roller (110). The detection module (300) is communicatively connected to the first drive mechanism (210) and is used to detect the position of the conductive wire (22) and the battery cell (21) on the roller (110) and to adjust the first drive mechanism (210) according to the position of the conductive wire (22) and the battery cell (21). A welding module (400) is located outside the roller (110) and is used to weld the conductive wire (22) to the seed layer (211) when the conductive wire (22) is aligned with the seed layer (211).
2. The stacked-grid battery welding apparatus according to claim 1, characterized in that, The detection module (300) is configured to detect the position of the battery cell (21) on the roller (110) when the battery cell (21) is fixed to the fixing part, and to detect the position of the conductive wire (22) relative to the seed layer (211) after the conductive wire (22) is spirally wound onto the roller (110).
3. The stacked-grid battery welding apparatus according to claim 1, characterized in that, The detection module (300) is configured to detect in real time the position of the conductive wire (22) relative to the seed layer (211) during the process of the winding mechanism (220) and the roller (110) being linked to spirally wind the conductive wire (22) onto the roller (110).
4. The stacked-grid battery welding apparatus according to claim 1, characterized in that, Both the first fixed cutting mechanism (120) and the second fixed cutting mechanism (130) include a driving member (121) and a pressing member (122). The driving member (121) is connected to the pressing member (122) and is used to drive the pressing member (122) to move radially along the roller (110) to press the conductive wire (22) onto the roller (110).
5. The stacked-grid battery welding apparatus according to claim 4, characterized in that, Both the first fixed cutting mechanism (120) and the second fixed cutting mechanism (130) further include a cutting member, which is installed on the side of the clamping member (122) along the spiral winding direction of the conductive wire (22) and away from the fixed part, and is configured to cut the conductive wire (22) when the clamping member (122) presses the conductive wire (22) onto the roller (110).
6. The stacked-grid battery welding apparatus according to claim 1, characterized in that, The adsorption module (100) further includes a limiting mechanism (140), which is installed on the outer side wall of the roller (110) and is used to limit the engagement with the conductive wire (22). Along the spiral winding direction of the conductive wire (22), the limiting mechanism (140) is located between the fixing part and the first fixing and cutting mechanism (120).
7. The stacked-grid battery welding apparatus according to claim 6, characterized in that, The limiting mechanism (140) includes a mounting body (141) mounted on the outer side wall of the roller (110) and two limiting posts (142) spaced apart on the mounting body (141). The two limiting posts (142) are configured to limit the corresponding sides of the conductive wire (22) when the conductive wire (22) spirals between the two limiting posts (142).
8. The stacked grid battery welding apparatus according to claim 1, characterized in that, The stacked grid battery welding device (10) also includes a robot gripper (500) for gripping the battery cell (21) and placing the battery cell (21) at the fixing part.
9. The stacked-grid battery welding apparatus according to any one of claims 1 to 8, characterized in that, The welding module (400) includes a preheating mechanism (410) and a welding mechanism (420). The preheating mechanism (410) is used to preheat the battery cell (21) and the conductive wire (22) when the conductive wire (22) is aligned with the seed layer (211). The welding mechanism (420) is used to weld the conductive wire (22) to the seed layer (211) after the battery cell (21) and the conductive wire (22) are preheated.
10. The stacked-grid battery welding apparatus according to claim 9, characterized in that, The preheating mechanism (410) includes an infrared lamp for preheating the battery cell (21) and the conductive wire (22), and the welding mechanism (420) includes a laser for welding the conductive wire (22) to the seed layer (211).