Battery cell upper and lower support welding equipment

Abstract

The utility model discloses a battery cell upper and lower support welding equipment, and the equipment includes: operation platform, battery cell group conveying mechanism, battery cell group turnover mechanism, positioning clamping moving mechanism and spot welding mechanism. Battery cell upper and lower support welding equipment each core mechanism accurate design, cooperation, and high -efficient guarantee production and quality. The transmission belt width matches the battery cell length and is equipped with the blocking strip and prevents the deviation, and the tensioning structure is stable speed, and the welding rhythm is fitted. The waiting platform is equal height with the conveying mechanism in the turnover link, and the push plate action is accurate, and the battery cell is adapted after turning over and is grabbed by the mechanical arm, and the connection time is shortened. In the positioning clamping link, the positioning groove and the clamping block double positioning control error, and the screw nut transmission promotes the precision, and the process is saved and waits. In the welding link, the welding and the positioning moving unit are same logic, and the signal linkage prevents the error operation, and the high -efficient safety is comprehensively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and in particular to welding equipment for upper and lower supports of battery cells. Background Technology

[0002] In the current field of cell assembly and upper and lower bracket welding, with the vigorous development of the new energy industry, stringent requirements have been placed on the performance, efficiency and quality of welding equipment. However, existing technologies have many thorny problems.

[0003] From the perspective of the conveying process, the design of the drive belt in common equipment lacks precise consideration, with the width not matching the length of the battery cell. This causes frequent lateral shifts in the battery cells during transport, making it difficult for them to accurately reach the designated positions in subsequent processes. This not only severely disrupts the connection between flipping and welding processes, resulting in a significant waste of time on repositioning, but also greatly increases the defect rate. Moreover, most equipment lacks an effective drive belt tensioning structure. Once the drive belt becomes loose, it will cause conveying jams or speed fluctuations, making it impossible to coordinate with the welding equipment's cycle time, resulting in low overall production efficiency and making it difficult to meet the needs of large-scale production.

[0004] The flipping process also presents numerous problems. In many existing devices, the waiting platform and conveyor mechanism are not at the same height, and the timing of the pusher's movement and the conveyor's stop cannot be precisely coordinated. This easily leads to the accumulation of cells in the waiting area, severely disrupting the stability of each batch of cells from conveying to flipping, resulting in intermittent production. More critically, the vertical posture of the flipped cells is difficult to match with the robotic arm's grasping path, requiring the robotic arm to spend extra time adjusting its posture, significantly extending the overall operation time and hindering the improvement of production efficiency.

[0005] The positioning and clamping process is equally problematic. Traditional equipment typically employs a single positioning method, making it difficult to effectively control the overall error of the assembly. Minor tilts are common, leading to deviations in welding points and frequent issues such as incomplete or missed welds, severely impacting product quality. Regarding movement and positioning, many machines use belt drives or cylinder drives, whose movement accuracy is far from meeting the demands of high-precision welding. This makes it difficult for the positioning and clamping platform to accurately stop below the spot welding mechanism, resulting in significant alignment errors of the welding torch. This necessitates repeated adjustments to the spot welding mechanism, greatly increasing waiting time between processes and slowing down the production pace.

[0006] Regarding the welding process, the control logic of the welding movement unit and the positioning and clamping movement unit in some existing equipment is chaotic and operates independently. This prevents the synchronous coordination of assembly transfer and spot welding machine alignment through a unified system, frequently resulting in connection errors and hindering smooth welding operations. Furthermore, the lack of effective linkage between the spot welding mechanism's start signal and the assembly's arrival signal poses a risk of starting welding before the assembly is stably clamped. This not only easily damages the equipment but also causes a large number of products to be scrapped, resulting in significant losses for the company. Utility Model Content

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a welding equipment for upper and lower supports of battery cells, the equipment comprising: Control panel 1, which provides a mounting platform for the various components of the equipment; The cell pack conveying mechanism 2 is used to convey multiple cells to the flipping area; The cell pack flipping mechanism 3 is used to flip at least two parallel cells located on the cell pack conveying mechanism 2 into a vertical state and wait for them to be picked up and assembled. The positioning and clamping moving mechanism 4 is used to position and clamp the assembled battery cell assembly with the upper and lower brackets and move it to the welding point to wait for welding. The spot welding mechanism 5 is used to weld the battery cell assembly to the pre-set welding points on the upper and lower brackets. Among them, the battery cell conveying mechanism 2, the battery cell flipping mechanism 3, the positioning and clamping moving mechanism 4 and the spot welding mechanism 5 are all set on the operating table 1. The battery cell flipping mechanism 3 is located at the conveying end of the battery cell conveying mechanism 2. The positioning and clamping moving mechanism 4 is parallel to the battery cell conveying mechanism 2, and the spot welding mechanism 5 spans across the positioning and clamping moving mechanism 4. The gripping of the battery cell assembly, upper and lower supports, and the assembly of the battery cell assembly and upper and lower supports are all achieved through an external robotic arm.

[0008] Furthermore, the cell pack conveying mechanism 2 includes: The conveying mounting bracket 201 is used to provide a mounting carrier for each component of the battery cell conveying mechanism 2; the battery cell conveying mechanism 2 is vertically mounted on the operating table 1. A conveyor belt unit 202 is mounted on a conveyor mounting bracket 201; the width of the conveyor belt unit 202 is the same as the length of the battery cell. At least two baffles 203 are installed on both sides of the conveyor belt unit 202; the baffles 203 are used to prevent the battery cells from detaching from the conveyor belt unit 202.

[0009] Furthermore, the conveyor belt unit 202 is composed of a transmission frame 2021, a main drive shaft 2022 and a driven drive shaft 2023 respectively installed at both ends of the transmission frame 2021, a transmission belt 2024 mounted on the main drive shaft 2022 and the driven drive shaft 2023, a driven pulley 2025 coaxial with the main drive shaft 2022, a drive motor 2026 mounted on the transmission frame 2021 and located near one end of the main drive shaft 2022, a drive pulley 2027 mounted on the drive motor 2026, and a belt 2028 mounted on the drive pulley 2027 and the driven pulley 2025.

[0010] Furthermore, the conveyor belt unit 202 is also provided with a tensioning structure 204, which consists of a tensioning wheel 2041 and two auxiliary wheels 2042 mounted on the transmission frame 2021. The tensioning structure 204 is used to keep the transmission belt 2024 in a suitable tension state during rotation.

[0011] Furthermore, the cell pack flipping mechanism 3 includes: Waiting platform 301 is located at the end of the battery cell conveying mechanism 2 and has the same height as the battery cell conveying mechanism 2. A blocking block 302 is installed on the waiting platform 301; the blocking block 302 is used to prevent the battery cell from detaching from the waiting platform 301. The pusher cylinder 303 is installed outside the battery cell conveying mechanism 2 and is perpendicular to the battery cell conveying mechanism 2. Push plate 304 is mounted on the telescopic end of push plate cylinder 303; push plate 304 is used to push the battery cell on waiting platform 301 to the position to be flipped. A flip bracket 305 is vertically mounted on the operating table 1; A flip motor 306 is mounted on a flip bracket 305; A flip block 307 is located inside a flip bracket 305, and the height of the flip block 307 is the same as that of the waiting platform 301; the flip block 307 is connected to the rotating end of the flip motor 306. At least two parallel flip slots 308 are located on the side of the flip block 307 facing the waiting platform 301; the flip slots 308 are consistent with the shape of the battery cell. The battery cells are transported to the waiting platform 301 by the battery cell assembly conveying mechanism 2. The push plate cylinder 303 drives the push plate 304 to push at least two battery cells into the corresponding flipping slots 308. Then, the flipping motor 306 drives the flipping block 307 to flip at least two battery cells into a vertical state, waiting for the peripheral robotic arm to grab them.

[0012] Furthermore, the positioning and clamping moving mechanism 4 includes: Positioning and clamping platform 401; The positioning groove 402 is located on the surface of the positioning clamping platform 401; the size of the positioning groove 402 is the same as the size of the bottom surface of the assembly of the battery cell group and the upper and lower brackets. Two opposing clamping cylinders 403 are mounted on the positioning and clamping platform 401 via corresponding mounting posts; Two clamping blocks 404 are installed on the telescopic ends of the corresponding clamping cylinders 403; The moving unit 405 is fixedly installed on the operating table 1; the positioning and clamping platform 401 is installed on the moving unit 405, so that the positioning and clamping platform 401 moves along the moving direction of the moving unit 405. The battery cell assembly and the upper and lower brackets are transported to the positioning groove 402 of the positioning and clamping platform 401 by the external robotic arm. The clamping cylinder 403 drives the clamping block 404 to clamp the two sides of the battery cell assembly and the upper and lower brackets. The moving unit 405 drives the positioning and clamping platform 401 to move below the spot welding mechanism 5, waiting for welding.

[0013] Furthermore, the spot welding mechanism 5 includes: The horizontal frame bracket 501 is fixedly installed on the operating table 1 and spans across the positioning clamping and moving mechanism 4. Welding installation platform 502; The welding moving unit 503 is installed inside the crossbeam of the cross frame support 501; the moving direction of the welding moving unit 503 is consistent with the length direction of the crossbeam of the cross frame support 501; the welding mounting platform 502 is installed on the welding moving unit 503, so that the welding mounting platform 502 moves along the moving direction of the welding moving unit 503. Telescopic cylinder mounting box 504 is mounted on welding mounting platform 502; A welding telescopic cylinder 505 is mounted on the upper surface of a telescopic cylinder mounting box 504; the telescopic end of the welding telescopic cylinder 505 faces downward. Telescopic block 506, which is installed on the telescopic end of welding telescopic cylinder 505; Spot welding machine 507, which is installed on the side of telescopic block 506; The welding moving unit 503 moves the spot welding machine 507 to the top of the assembly of the battery cell group and the upper and lower brackets. The welding telescopic cylinder 505 moves the spot welding machine 507 down to the preset welding point of the assembly of the battery cell group and the upper and lower brackets. The spot welding machine then welds the preset welding point of the battery cell group and the upper and lower brackets.

[0014] Furthermore, the moving unit 405 and the welding moving unit 503 have the same structure and are perpendicular to each other. Both the moving unit 405 and the welding moving unit 503 include: Moving guide rail 6; Gear drive unit 7, which is located at the end face of the moving guide rail 6; The movable block 8 is located within the movable guide rail 6; Screw 9 is mounted on the rotating end of gear drive unit 7; Nut 10 is located inside the movable block 8 and mounted on the screw 9; the external thread tooth surface of the screw 9 meshes with the internal thread tooth surface of the nut 10. The gear drive unit 7 drives the screw to rotate, and the nut 10 inside the moving block 8 moves linearly along the axis of the screw 9, which in turn drives the moving block 8 to move along the length of the moving guide rail 6.

[0015] Compared with existing technologies, this utility model has the following advantages: In the welding equipment for upper and lower battery cell supports, each core mechanism ensures production efficiency and welding quality through precise design and coordinated cooperation. In the conveying process, the width of the transmission belt is perfectly matched with the length of the battery cell, and with the limit bars on both sides, lateral displacement of the battery cell can be avoided, ensuring that the error of its stopping at the flipping position is minimal, laying the foundation for precise docking in subsequent processes; the tensioning structure adjusts the tension of the transmission belt in real time to prevent conveying jams or speed fluctuations, making the conveying speed highly matched with the welding rhythm, and improving overall efficiency. By setting up a flipping process, the platform and the conveying mechanism are aligned at the same height, and the pusher action and the timing of the conveying stop are precisely coordinated to avoid the accumulation of battery cells and ensure that each batch is conveyed to the flipping cycle stably. After flipping, the vertical posture of the battery cells is adapted to the gripping path of the robotic arm, and the flipping mechanism actively sends a gripping signal, saving the time for adjusting the posture of the robotic arm and shortening the connection time. By setting up a positioning and clamping mechanism, the bottom limit of the positioning groove and the side clamping of the clamping block form a dual positioning, which controls the overall error of the assembly, eliminates slight tilting, ensures the accuracy of welding points, and reduces incomplete welding and missed welding. The moving unit adopts screw and nut transmission, which improves the movement accuracy compared with the traditional transmission method, so that the positioning and clamping platform stops accurately below the spot welding mechanism, reduces welding gun alignment error, and saves process waiting time. By setting up a welding process, the control logic of the welding moving unit and the positioning and clamping moving unit is consistent. The assembly transfer and spot welding machine alignment are synchronized through the same system, avoiding connection errors. Moreover, the spot welding mechanism start signal is linked with the assembly arrival signal to ensure that welding is started only after the assembly is stably clamped, avoiding the risk of misoperation and ensuring efficient and safe production in all aspects. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the battery cell upper and lower support welding equipment of this utility model.

[0017] Figure 2 This is a schematic diagram of the battery cell pack conveying mechanism and the battery cell pack flipping mechanism of this utility model.

[0018] Figure 3 This is a schematic diagram of the conveyor belt unit of this utility model.

[0019] Figure 4 This is a rear view of the conveyor belt unit of this utility model.

[0020] Figure 5 This is a schematic diagram of the tensioning structure of this utility model; Figure 6 This is a schematic diagram of the positioning, clamping, moving mechanism and the spot welding mechanism of this utility model; Figure 7 This is a structural schematic diagram of the telescopic cylinder mounting box, the welded telescopic cylinder, and the telescopic block of this utility model.

[0021] Figure 8 This is a schematic diagram of the structure of the transmission belt unit or conveyor belt unit of this utility model.

[0022] The components include: 1. Operating platform; 2. Battery cell assembly conveying mechanism; 201. Conveying mounting bracket; 202. Conveying drive belt unit; 2021. Transmission frame; 2022. Main drive shaft; 2023. Driven drive shaft; 2024. Transmission belt; 2025. Driven pulley; 2026. Drive motor; 2027. Driving pulley; 2028. Belt; 203. Stop bar; 204. Tensioning structure; 2041. Tensioning pulley; 2042. Auxiliary pulley; 3. Battery cell assembly flipping mechanism; 301. Waiting platform; 302. Block; 303. Push plate cylinder; 304. Push plate; 305. 1. Flipping bracket; 306. Flipping motor; 307. Flipping block; 308. Flipping groove; 4. Positioning clamping moving mechanism; 401. Positioning clamping platform; 402. Positioning groove; 403. Clamping cylinder; 404. Clamping block; 405. Moving unit; 5. Spot welding mechanism; 501. Horizontal frame bracket; 502. Welding installation platform; 503. Welding moving unit; 504. Telescopic cylinder mounting box; 505. Welding telescopic cylinder; 506. Telescopic block; 507. Spot welding machine; 6. Moving guide rail; 7. Gear drive unit; 8. Moving block; 9. Screw; 10. Nut. Detailed Implementation

[0023] The technical solutions of the battery cell upper and lower bracket welding equipment provided by this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] refer to Figure 1As shown, the battery cell upper and lower bracket welding equipment includes an operating table 1, which provides an installation carrier for the various components of the equipment. In precision welding scenarios where battery cells are joined to brackets, positional errors can lead to problems such as weld point misalignment and incomplete welding. The operating table 1, through a stable installation reference, ensures consistent welding quality and reduces safety hazards such as leakage and overheating during the later use of the battery cells.

[0025] refer to Figures 2-4 As shown, the device also includes a cell pack conveying mechanism 2, which is used to convey multiple cells to the flipping point.

[0026] Furthermore, the battery cell conveying mechanism 2 includes: a conveying mounting bracket 201, which provides a mounting carrier for each component of the battery cell conveying mechanism 2; the battery cell conveying mechanism 2 is vertically mounted on the operating table 1; a conveying transmission belt unit 202, which is mounted on the conveying mounting bracket 201; the width of the conveying transmission belt unit 202 is the same as the length of the battery cell; at least two baffles 203, which are installed on both sides of the conveying transmission belt unit 202; the baffles 203 are used to prevent the battery cell from detaching from the conveying transmission belt unit 202. Furthermore, the conveyor belt unit 202 is composed of a transmission frame 2021, a main drive shaft 2022 and a driven drive shaft 2023 respectively installed at both ends of the transmission frame 2021, a transmission belt 2024 mounted on the main drive shaft 2022 and the driven drive shaft 2023, a driven pulley 2025 coaxial with the main drive shaft 2022, a drive motor 2026 mounted on the transmission frame 2021 and located near one end of the main drive shaft 2022, a drive pulley 2027 mounted on the drive motor 2026, and a belt 2028 mounted on the drive pulley 2027 and the driven pulley 2025.

[0027] Furthermore, the conveyor belt unit 202 is also provided with a tensioning structure 204, which consists of a tensioning wheel 2041 and two auxiliary wheels 2042 mounted on the transmission frame 2021. The tensioning structure 204 is used to keep the transmission belt 2024 in a suitable tension state during rotation.

[0028] Specifically, when the equipment receives an instruction to transport the battery cells to the flipping location, the drive motor 2026 starts first, and its output shaft drives the coaxially mounted drive wheel 2027 to rotate. Power is transmitted to the main drive shaft 2022, coaxial with the driven wheel 2025, via a belt 2028 mounted on the drive wheel 2027 and the driven wheel 2025, causing the main drive shaft 2022 to rotate. The rotation of the main drive shaft 2022 drives the driven drive shaft 2023 to rotate synchronously via a transmission belt 2024 mounted on it and the driven drive shaft 2023, ultimately achieving stable horizontal rotation of the transmission belt 2024 along the transmission frame 2021. After the operator or upstream feeding mechanism places the battery cell assembly on the transmission belt 2024, the battery cell assembly moves towards the flipping location along with the rotation of the transmission belt 2024. During this process, the width of the transmission belt 2024 is the same as the length of the battery cell, ensuring that the battery cell assembly always moves along the centerline of the transmission belt. Simultaneously, the baffles 203 on both sides of the transmission belt 2024 form a protective boundary, preventing the battery cell assembly from detaching from the edge of the transmission belt due to vibration or positional shift. Throughout the operation of the transmission belt 2024, the tensioning structure 204 continuously functions: the tensioning wheel 2041, mounted on the transmission frame 2021, and the two auxiliary wheels 2042 work together to contact the inner side of the transmission belt 2024, adjusting the tension of the transmission belt 2024 in real time through a preset elastic pressure. When the transmission belt 2024 becomes slightly loose due to long-term use, the tensioning wheel 2041 will push the transmission belt upwards, cooperating with the limiting action of the auxiliary wheels 2042, ensuring that the transmission belt maintains a suitable tension that is neither slipping nor too tight, thus ensuring a stable conveying speed. When the battery cell assembly moves with the transmission belt 2024 to the preset position to be flipped, the sensor sends a signal to the control system, the drive motor 2026 stops running, the transmission belt 2024 stops accordingly, and the battery cell assembly stops precisely at the position to be flipped, waiting for the subsequent flipping mechanism to connect and operate.

[0029] In this implementation, the width of the transmission belt 2024 perfectly matches the length of the battery cell. Combined with the limiting effect of the side stops 203, lateral displacement of the battery cell during transport is prevented, ensuring that the battery cell assembly ultimately stops at the point to be flipped, thus providing a foundation for precise alignment in subsequent flipping and welding processes and reducing process delays caused by positioning deviations. The tensioning structure 204, by adjusting the tension of the transmission belt 2024 in real time, avoids problems such as transport jamming or inconsistent speed caused by belt slack, ensuring that the battery cell assembly transport speed is highly matched with the cycle time of the welding equipment, thereby improving overall production efficiency.

[0030] refer to Figure 2 As shown, the device also includes a cell pack flipping mechanism 3, which is used to flip at least two parallel cells located on the cell pack conveying mechanism 2 into a vertical state and wait for them to be picked up and assembled.

[0031] Furthermore, the cell assembly flipping mechanism 3 includes: a waiting platform 301, located at the conveying end of the cell assembly conveying mechanism 2 and having the same height as the cell assembly conveying mechanism 2; a blocking block 302, installed on the waiting platform 301; the blocking block 302 is used to prevent the cell from detaching from the waiting platform 301; a pusher cylinder 303, installed outside the cell assembly conveying mechanism 2 and perpendicular to the cell assembly conveying mechanism 2; a pusher plate 304, installed on the telescopic end of the pusher plate cylinder 303; the pusher plate 304 is used to push the cell on the waiting platform 301 to the flipping position; a flipping bracket 305, vertically installed on the operating table 1; and a flipping motor 306, installed on the flipping bracket 305. A flipping block 307 is located inside a flipping bracket 305, and the height of the flipping block 307 is the same as that of the waiting platform 301. The flipping block 307 is connected to the rotating end of a flipping motor 306. At least two parallel flipping slots 308 are located on the side of the flipping block 307 facing the waiting platform 301. The flipping slots 308 are consistent with the shape of the battery cell. The battery cell is transported to the waiting platform 301 by the battery cell assembly conveying mechanism 2. The push plate cylinder 303 drives the push plate 304 to push at least two battery cells into the corresponding flipping slots 308. Then, the flipping motor 306 drives the flipping block 307 to flip at least two battery cells into a vertical state, waiting for the external robotic arm to grasp them.

[0032] Specifically, when the battery cell conveying mechanism 2 transports at least two parallel battery cells to the end of the conveying process, the battery cells smoothly transition onto the waiting platform 301. Since the waiting platform 301 is at the same height as the conveying mechanism 2 and its surface is made of a smooth, wear-resistant alloy, the battery cells can be transferred from the conveyor belt 2024 to the waiting platform without any jamming. At this time, the blocking block 302 installed on the edge of the waiting platform 301 prevents the battery cells from moving further, avoiding them from detaching from the platform edge due to inertia. It also confines the battery cells to the area to be pushed, providing precise initial positioning for subsequent pusher actions. When the position sensor on the waiting platform 301 detects that the battery cells are in place, it sends a signal to the control system, triggering the pusher cylinder 303 to start. The telescopic end of the pusher cylinder 303 drives the pusher 304 to extend smoothly in a direction perpendicular to the conveying mechanism 2. The pushing surface of the pusher 304 is completely in contact with the side of the battery cell, and the pushing speed is optimized to avoid battery cell collision and deformation due to excessive pushing force. Finally, the pusher 304 synchronously pushes at least two battery cells from the waiting platform into the corresponding flipping slots 308 of the flipping block 307, achieving zero-offset positioning of the battery cells within the flipping slots. When the sensor within the flipping slot 308 detects that the battery cell is fully inserted, the control system sends a command to the flipping motor 306, which then begins to operate. Since the flipping block 307 is rigidly connected to the rotating end of the flipping motor 306, and the flipping block 307 is confined within the flipping bracket 305, the flipping motor 306 drives the flipping block 307 to rotate synchronously. The rotation angle is preset to 90°, and the rotation process is uniform and smooth, preventing the battery cells from shifting due to centrifugal force within the flipping slots. When the flipping block 307 rotates to 90°, the flipping motor 306 automatically stops, and the battery cell precisely transitions from a horizontal to a vertical position, remaining stably locked within the flipping slot 308, awaiting subsequent grasping. After reaching the vertical position, the flipping mechanism 3 maintains its current state while simultaneously sending a grasping signal to the external robotic arm. At this point, the opening direction of the flipping slot 308 perfectly matches the gripping path of the robotic arm. The robotic arm can directly extend into the flipping slot to grip the battery cell without adjusting its posture, achieving a seamless connection between flipping and gripping. After the robotic arm grips the battery cell, the flipping motor 306 rotates 90° in the opposite direction, driving the flipping block 307 to reset, ready to receive the next batch of battery cells for flipping.

[0033] In this embodiment, the waiting platform 301 is aligned with the conveying mechanism 2, and the pushing action of the pusher 304 is precisely matched with the stopping timing of the conveying mechanism. This prevents the battery cells from accumulating during the waiting process, ensuring a stable conveying-flipping cycle for each batch of battery cells, which is highly compatible with the cycle time of the welding equipment. After flipping, the vertical posture of the battery cell matches the gripping path of the robotic arm, and the flipping mechanism actively sends a gripping signal, saving the time for the robotic arm to adjust its posture and shortening the connection time between flipping and gripping.

[0034] refer to Figure 6 and Figure 8As shown, the device also includes a positioning and clamping moving mechanism 4, which is used to position and clamp the assembled battery cell assembly with the upper and lower brackets and move it to the welding point to wait for welding.

[0035] Furthermore, the positioning and clamping moving mechanism 4 includes: a positioning and clamping platform 401; a positioning groove 402 located on the surface of the positioning and clamping platform 401; the size of the positioning groove 402 is the same as the bottom surface size of the assembly of the battery cell group and the upper and lower supports; two opposing clamping cylinders 403, which are mounted on the positioning and clamping platform 401 via corresponding mounting posts; two clamping blocks 404, which are mounted on the telescopic ends of the corresponding clamping cylinders 403; and a moving unit 405, which is fixedly mounted on the operating table 1. The positioning and clamping platform 401 is mounted on the moving unit 405, so that the positioning and clamping platform 401 moves along the moving direction of the moving unit 405. The battery cell group and the assembly of the upper and lower supports are transported to the positioning groove 402 of the positioning and clamping platform 401 by an external robotic arm. The clamping cylinders 403 drive the clamping blocks 404 to clamp the two sides of the assembly of the battery cell group and the upper and lower supports, and the moving unit 405 drives the positioning and clamping platform 401 to move below the spot welding mechanism 5, waiting for welding.

[0036] Furthermore, the moving unit 405 includes: a moving guide rail 6; a gear drive unit 7 located at the end face of the moving guide rail 6; a moving block 8 located inside the moving guide rail 6; a screw 9 mounted on the rotating end of the gear drive unit 7; and a nut 10 located inside the moving block 8 and mounted on the screw 9; the external thread tooth surface of the screw 9 meshes with the internal thread tooth surface of the nut 10; wherein, the gear drive unit 7 drives the screw to rotate, and the nut 10 inside the moving block 8 moves linearly along the axis of the screw 9, driving the moving block 8 to move along the length direction of the moving guide rail 6.

[0037] Specifically, after the external robotic arm completes the gripping and transfer of the battery cell assembly and the upper and lower support bracket assembly, it precisely places the assembly into the positioning slot 402 of the positioning and clamping platform 401. Since the size of the positioning slot 402 perfectly matches the size of the bottom surface of the assembly, the bottom surface can be directly limited after the assembly is placed, preventing lateral displacement or wobbling on the platform and providing a stable initial reference for subsequent clamping actions. At this time, the positioning and clamping platform 401 is in the initial standby position of the moving unit 405, ensuring no spatial interference when the robotic arm places the assembly. When the position sensor in the positioning slot 402 detects that the assembly is fully in place, it sends a signal to the control system, triggering the synchronous start of the two opposing clamping cylinders 403. The extension and retraction ends of the clamping cylinders 403 smoothly move the clamping blocks 404 closer to the two side surfaces of the assembly. The contact surface of the clamping blocks 404 is adapted to the shape of the side of the assembly, and the contact surface is covered with a soft, wear-resistant material, which not only prevents scratching the surface of the assembly during clamping but also increases friction. When the clamping block 404 is tightly fitted against the side of the assembly and the clamping force reaches the preset value, the clamping cylinder 403 stops operating, and the assembly is firmly fixed in the positioning groove 402, achieving clamping and positioning without loosening or deformation. After the assembly is clamped and fixed, the control system sends a transfer command to the gear drive unit 7 of the moving unit 405. The gear drive unit 7 starts to operate, and its rotating end drives the screw 9 to rotate synchronously. Since the external thread tooth surface of the screw 9 meshes with the internal thread tooth surface of the nut 10 in the moving block 8, and the moving block 8 is confined within the moving guide rail 6, the rotational motion of the screw 9 is converted into the linear motion of the nut 10 through thread transmission. The nut 10 moves smoothly along the axial direction of the screw 9, while simultaneously driving the moving block 8 fixed to it to move downwards along the length direction of the moving guide rail 6 towards the spot welding mechanism 5. Throughout the movement process, the movement speed of the moving block 8 is optimized to avoid the assembly shifting due to inertia caused by excessive speed. When the moving block 8 moves the positioning and clamping platform 401 directly below the spot welding mechanism 5, the position sensor at the end of the moving guide rail 6 detects the arrival signal of the moving block 8 and sends it back to the control system. At this time, the gear drive unit 7 immediately stops operating, the screw 9 stops rotating, and the moving block 8 and the positioning and clamping platform 401 are precisely positioned in the welding standby position. The welding point of the assembly is perfectly aligned with the welding gun position of the spot welding mechanism 5, and the clamping cylinder 403 maintains the clamping state, ensuring that the assembly remains stable during the waiting welding process until the spot welding mechanism 5 starts the welding operation.

[0038] In this local example, the overall positioning error of the assembly can be controlled through a dual positioning method using the bottom limiting of the positioning groove 402 and the side clamping of the clamping block 404. The positioning groove ensures the precise relative position of the bottom surface of the assembly to the platform, while the clamping block eliminates any slight tilting that the assembly may have, ensuring that the welding points of the assembly are always in the preset position. This prevents the welding gun of the spot welding mechanism 5 from being misaligned due to assembly offset, reducing defects such as incomplete welds and missed welds. The moving unit 405 adopts a screw-nut transmission structure. Compared with traditional belt drives or cylinder drives, the threaded engagement transmission method can improve the movement accuracy. The positioning and clamping platform 401 can accurately stop directly below the spot welding mechanism 5, reducing the alignment error between the welding points of the assembly and the welding gun. This eliminates the need for additional position adjustments by the spot welding mechanism, saving waiting time during process connections.

[0039] refer to Figures 6-8 As shown, the equipment includes a spot welding mechanism 5, which is used to weld the battery cell assembly to the pre-set welding points on the upper and lower supports.

[0040] Furthermore, the spot welding mechanism 5 includes: a horizontal frame support 501, which is fixedly installed on the operating table 1 and spans across the positioning and clamping moving mechanism 4; a welding mounting platform 502; a welding moving unit 503, which is installed inside the crossbeam of the horizontal frame support 501; the moving direction of the welding moving unit 503 is consistent with the length direction of the crossbeam of the horizontal frame support 501; the welding mounting platform 502 is installed on the welding moving unit 503, so that the welding mounting platform 502 moves along the moving direction of the welding moving unit 503; a telescopic cylinder mounting box 504, which is installed on the welding mounting platform 502; welding A telescopic cylinder 505 is mounted on the upper surface of a telescopic cylinder mounting box 504; the telescopic end of the welding telescopic cylinder 505 faces downward; a telescopic block 506 is mounted on the telescopic end of the welding telescopic cylinder 505; a spot welder 507 is mounted on the side of the telescopic block 506; wherein, the welding moving unit 503 drives the spot welder 507 to move above the assembly of the battery cell assembly and the upper and lower supports, and the welding telescopic cylinder 505 drives the spot welder 507 to descend to the preset welding point of the assembly of the battery cell assembly and the upper and lower supports, and the spot welder welds the preset welding point of the battery cell assembly and the upper and lower supports.

[0041] In this embodiment, after the positioning and clamping moving mechanism 4 accurately moves the battery cell assembly and the upper and lower brackets to the welding standby position and sends a feedback signal indicating that the assembly is in place, the control system of the spot welding mechanism 5 starts the welding moving unit 503: the gear drive unit 7 located on the end face of the moving guide rail 6 starts to operate, and its rotating end drives the screw 9 to rotate synchronously. Since the external thread of the screw 9 meshes with the internal thread of the nut 10 inside the moving block 8, and the moving block 8 is confined within the moving guide rail 6, the rotational motion of the screw 9 is converted into the linear motion of the nut 10, thereby driving the moving block 8 to move along the length direction of the moving guide rail 6. The welding mounting platform 502 fixed to the moving block 8 moves together, and the telescopic cylinder mounting box 504, welding telescopic cylinder 505, telescopic block 506 and spot welding machine 507 installed on the welding mounting platform 502 move synchronously until the spot welding machine 507 accurately reaches the first welding point above the assembly, the gear drive unit 7 stops operating, and the welding moving unit 503 completes the alignment. After the welding moving unit 503 is aligned, the control system sends a descent command to the welding telescopic cylinder 505. The welding telescopic cylinder 505, mounted on the upper surface of the telescopic cylinder mounting box 504, starts, and its telescopic end drives the telescopic block 506 and the spot welding machine 507 mounted on the side to descend at a uniform speed. During the descent, the welding torch of the spot welding machine 507 is always aligned with the preset welding point on the assembly. When the distance between the welding torch and the surface of the welding point reaches the preset welding height, the stroke sensor of the welding telescopic cylinder 505 sends a positioning signal, the telescopic end stops descending, and the spot welding machine 507 precisely stops at the welding point, completing the pre-welding positioning. After the spot welding machine 507 is positioned, the control system sends a welding command to the spot welding machine, which outputs a welding current with preset parameters to the welding point through the welding torch. The current flows through the welding point, generating localized high temperatures that melt the metal, forming a weld nugget. After the welding time ends, the spot welding machine stops outputting current, and the weld nugget rapidly cools and solidifies, completing the welding of a single welding point. If an assembly has multiple welding points, after a single welding point is completed, the welding telescopic cylinder 505 first raises the spot welder 507 to a safe height. Then, the welding moving unit 503 restarts, moving the spot welder 507 directly above the next welding point. This descent, positioning, and welding process is repeated until all preset welding points are completed. After all welding points are finished, the welding telescopic cylinder 505 raises the spot welder 507 to its original position, and the welding moving unit 503 moves the spot welder 507 back to its initial standby position, awaiting welding instructions for the next assembly.

[0042] Furthermore, the welding moving unit 503 includes: a moving guide rail 6; a gear drive unit 7 located at the end face of the moving guide rail 6; a moving block 8 located inside the moving guide rail 6; a screw 9 mounted on the rotating end of the gear drive unit 7; and a nut 10 located inside the moving block 8 and mounted on the screw 9; the external thread tooth surface of the screw 9 meshes with the internal thread tooth surface of the nut 10; wherein, the gear drive unit 7 drives the screw to rotate, and the nut 10 inside the moving block 8 moves linearly along the axis of the screw 9, driving the moving block 8 to move along the length direction of the moving guide rail 6.

[0043] Among them, the battery cell conveying mechanism 2, the battery cell flipping mechanism 3, the positioning and clamping moving mechanism 4 and the spot welding mechanism 5 are all set on the operating table 1. The battery cell flipping mechanism 3 is located at the conveying end of the battery cell conveying mechanism 2. The positioning and clamping moving mechanism 4 is parallel to the battery cell conveying mechanism 2, and the spot welding mechanism 5 spans across the positioning and clamping moving mechanism 4. The gripping of the battery cell, the upper and lower supports, and the assembly of the battery cell and the upper and lower supports are all realized by the external robotic arm.

[0044] The above description details one embodiment of the present utility model, but it is merely a preferred embodiment and should not be construed as limiting the scope of the present utility model. All equivalent variations and improvements made within the scope of the present utility model application should still fall within the patent coverage of the present utility model.

Claims

1. A welding equipment for upper and lower supports of a battery cell, characterized in that, The device includes: The control panel (1) is used to provide a mounting carrier for the various components of the equipment; A cell pack conveying mechanism (2) is used to convey multiple cells to the flipping point; The cell pack flipping mechanism (3) is used to flip at least two cells that are parallel to each other on the cell pack conveying mechanism (2) into a vertical state and wait for them to be picked up and assembled. The positioning and clamping moving mechanism (4) is used to position and clamp the assembled battery cell group with the upper and lower brackets and move it to the welding point to wait for welding. The spot welding mechanism (5) is used to weld the battery cell assembly and the pre-set welding points of the upper and lower brackets. Among them, the battery cell conveying mechanism (2), the battery cell flipping mechanism (3), the positioning and clamping moving mechanism (4) and the spot welding mechanism (5) are all set on the operating table (1). The battery cell flipping mechanism (3) is located at the conveying end of the battery cell conveying mechanism (2). The positioning and clamping moving mechanism (4) is parallel to the battery cell conveying mechanism (2). The spot welding mechanism (5) spans across the positioning and clamping moving mechanism (4). The gripping of the battery cell assembly, upper and lower supports, and the assembly of the battery cell assembly and upper and lower supports are all achieved through an external robotic arm.

2. The cell upper and lower bracket welding equipment according to claim 1, characterized in that, The cell pack conveying mechanism (2) includes: A conveying mounting bracket (201) is used to provide a mounting carrier for each component of the battery cell conveying mechanism (2); the battery cell conveying mechanism (2) is vertically mounted on the operating table (1); A conveyor belt unit (202) is mounted on a conveyor mounting bracket (201); the width of the conveyor belt unit (202) is the same as the length of the battery cell; At least two baffles (203) are installed on both sides of the conveyor belt unit (202); the baffles (203) are used to prevent the battery cells from detaching from the conveyor belt unit (202).

3. The cell upper and lower bracket welding equipment according to claim 2, characterized in that, The conveyor belt unit (202) consists of a transmission frame (2021), a main drive shaft (2022) and a driven shaft (2023) respectively installed at both ends of the transmission frame (2021), a transmission belt (2024) fitted on the main drive shaft (2022) and the driven shaft (2023), a driven wheel (2025) coaxial with the main drive shaft (2022), a drive motor (2026) installed on the transmission frame (2021) and located near the end of the main drive shaft (2022), a drive wheel (2027) installed on the drive motor (2026), and a belt (2028) fitted on the drive wheel (2027) and the driven wheel (2025).

4. The cell upper and lower bracket welding equipment according to claim 3, characterized in that, The conveyor belt unit (202) is also provided with a tensioning structure (204), which consists of a tensioning wheel (2041) and two auxiliary wheels (2042) mounted on the transmission frame (2021). The tensioning structure (204) is used to keep the transmission belt (2024) in a suitable tension state during rotation.

5. The cell upper and lower bracket welding equipment according to claim 1, characterized in that, The cell pack flipping mechanism (3) includes: Waiting platform (301) is located at the end of the battery cell conveying mechanism (2) and has the same height value as the battery cell conveying mechanism (2); A blocking block (302) is installed on the waiting platform (301); the blocking block (302) is used to prevent the battery cell from detaching from the waiting platform (301); The push plate cylinder (303) is installed outside the battery cell conveying mechanism (2) and is perpendicular to the battery cell conveying mechanism (2); A push plate (304) is mounted on the telescopic end of a push plate cylinder (303); the push plate (304) is used to push the battery cell on the waiting platform (301) to the position to be flipped. A flip-up bracket (305) is vertically mounted on the operating table (1); A flip motor (306) is mounted on a flip bracket (305); A flip block (307) is located inside a flip bracket (305), and the height of the flip block (307) is the same as that of the waiting platform (301); the flip block (307) is connected to the rotating end of a flip motor (306); At least two parallel flip slots (308) are located on the side of the flip block (307) facing the waiting platform (301); the flip slots (308) are consistent with the shape of the battery cell; Among them, the battery cells are transported to the waiting platform (301) by the battery cell group conveying mechanism (2). The push plate cylinder (303) drives the push plate (304) to push at least two battery cells into the corresponding flipping slot (308). Then, the flipping motor (306) drives the flipping block (307) to flip at least two battery cells into a vertical state, waiting for the peripheral robotic arm to grab them.

6. The cell upper and lower bracket welding equipment according to claim 4, characterized in that, The positioning clamping moving mechanism (4) includes: Positioning and clamping platform (401); A positioning groove (402) is located on the surface of the positioning clamping platform (401); the size of the positioning groove (402) is the same as the size of the bottom surface of the battery cell assembly and the upper and lower brackets. Two opposing clamping cylinders (403) are mounted on the positioning and clamping platform (401) via corresponding mounting posts; Two clamping blocks (404) are mounted on the telescopic ends of the corresponding clamping cylinders (403); The moving unit (405) is fixedly installed on the operating table (1); the positioning and clamping platform (401) is installed on the moving unit (405) so that the positioning and clamping platform (401) moves along the moving direction of the moving unit (405); The battery cell assembly and the upper and lower brackets are transported to the positioning slot (402) of the positioning and clamping platform (401) by the external robotic arm. The clamping cylinder (403) drives the clamping block (404) to clamp the two sides of the battery cell assembly and the upper and lower brackets. The positioning and clamping platform (401) is moved to the underside of the spot welding mechanism (5) by the moving unit (405) and waits for welding.

7. The cell upper and lower bracket welding equipment according to claim 6, characterized in that, The spot welding mechanism (5) includes: A horizontal frame bracket (501) is fixedly installed on the operating table (1) and spans across the positioning clamping moving mechanism (4); Welding installation platform (502); The welding moving unit (503) is installed inside the crossbeam of the cross frame support (501); the moving direction of the welding moving unit (503) is consistent with the length direction of the crossbeam of the cross frame support (501); the welding mounting platform (502) is installed on the welding moving unit (503) so that the welding mounting platform (502) moves along the moving direction of the welding moving unit (503); Telescopic cylinder mounting box (504), which is mounted on welding mounting platform (502); A welding telescopic cylinder (505) is mounted on the upper surface of a telescopic cylinder mounting box (504); the telescopic end of the welding telescopic cylinder (505) faces downward. Telescopic block (506), which is installed on the telescopic end of the welding telescopic cylinder (505); A spot welding machine (507) is mounted on the side of the telescopic block (506); The welding moving unit (503) moves the spot welding machine (507) to the top of the assembly of the battery cell group and the upper and lower brackets. The welding telescopic cylinder (505) moves the spot welding machine (507) down to the preset welding point of the assembly of the battery cell group and the upper and lower brackets. The spot welding machine welds the preset welding point of the battery cell group and the upper and lower brackets.

8. The cell upper and lower bracket welding equipment according to claim 7, characterized in that, The moving unit (405) and the welding moving unit (503) have the same structure and are perpendicular to each other. Both the moving unit (405) and the welding moving unit (503) include: Moving guide rail (6); The gear drive unit (7) is located at the end face of the moving guide rail (6); The movable block (8) is located within the movable guide rail (6); The screw (9) is mounted on the rotating end of the gear drive unit (7); Nut (10), which is located inside the movable block (8) and mounted on the screw (9); the external thread tooth surface of the screw (9) meshes with the internal thread tooth surface of the nut (10); Among them, the gear drive unit (7) drives the screw to rotate, and the nut (10) inside the moving block (8) moves linearly along the axis of the screw (9), driving the moving block (8) to move along the length direction of the moving guide rail (6).

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