Battery cover plate laser pre-welding integrated turntable device

Abstract

The utility model provides a battery cover plate laser prewelding integrated turntable device, which belongs to the technical field of battery assembly and comprises a rotating disk, a rotating driving mechanism is arranged on one side of the rotating disk, and at least four battery cell jigs are arranged on the upper surface of the rotating disk along the circumferential direction. A feeding station, a detection station, a welding station and a discharging station are sequentially arranged on the outer ring of the rotating disc in the circumferential direction, a step detection module is arranged at the detection station, and a welding module is arranged at the welding station. The utility model has the beneficial effects that the high-speed transmission speed can be maintained through the rotating disc type structure, a large amount of time is saved, and the takt productivity is improved; and the step height difference and the gap between the cover plate and the aluminum shell opening can be detected before the pre-welding operation, so that the unnecessary operation process and resource waste in the cover plate welding process are reduced, and the overall production efficiency and the beat capacity are further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery assembly, and in particular relates to a battery cover plate laser pre-welding integrated turntable device. Background Art

[0002] At present, in the production process of square automotive power batteries, the cover plate laser welding process is generally set in the middle of the automotive power battery cell assembly section, and a pre-welding step will be set before the cover plate laser welding, that is, the battery is first positioned in the pre-welding fixture, and the cover plate and the aluminum shell opening are pre-welded to fix the cover plate; then the cover plate pressing block is removed and the connection around the cover plate and the aluminum shell opening is welded as a whole, that is, full welding treatment, so as to improve the flatness of the cover plate during overall welding.

[0003] For example, the welding positioning method for the square aluminum shell battery cover provided in Chinese patent CN110369942B discloses a cover plate laser welding process in which the cover plate and the aluminum shell opening are first spot-welded at the pre-welding positioning unit on the pre-welding turntable, and then the cover plate and the aluminum shell opening are fully welded at the full-welding positioning unit on the full-welding turntable.

[0004] However, the existing pre-welding turntable device still has certain defects: it generally only has three devices, namely, a loading station, a welding station and an unloading station, which can cooperate and operate with peripheral equipment, and lacks a station for detecting the step height difference and gap between the cover plate and the aluminum shell opening; therefore, it is easy to have unnecessary operations in the actual operation process, that is, there is an operation process of pre-welding unqualified products, thereby wasting resources and affecting the overall production rhythm. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a battery cover plate laser pre-welding integrated turntable device which can detect the step height difference and gap between the cover plate and the aluminum shell opening, thereby reducing unnecessary operation processes and resource waste during the cover plate welding process, and improving the overall production efficiency and cycle capacity.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is: a battery cover laser pre-welding integrated turntable device, which includes a rotating disk, a rotating drive mechanism is provided on one side of the rotating disk, at least four battery cell fixtures are circumferentially arranged on the upper surface of the rotating disk, and a loading station, an inspection station, a welding station and an unloading station are sequentially arranged on the outer ring of the rotating disk along the circumference, a step detection module is provided at the inspection station, and a welding module is provided at the welding station. In this way, after the utility model is applied in the production line of square automobile power batteries, when the cover plate and the aluminum shell opening are pre-welded, the battery cell sent by the feeding mechanism can be placed on the corresponding battery cell fixture at the loading station through a loading robot or other loading structure, and then with the rotation of the rotating disk, the battery cell will be transferred to the inspection station, and the height difference and gap value between the cover plate and the aluminum shell opening will be detected by the step detection module there to determine whether the battery cell is qualified; and if the battery cell is qualified, the pre-welding operation between the cover plate and the aluminum shell can be completed at the welding station first, and then the corresponding unloading operation can be completed at the unloading station through the unloading gripper; if the battery cell is unqualified, the pre-welding operation can be skipped, and the corresponding unloading operation can be completed directly at the unloading station through the unloading gripper, thereby avoiding unnecessary operations and waste of resources, and improving overall production efficiency and beat capacity.

[0007] Furthermore, the step detection module includes a detection bracket, on which an X-axis linear motion module 1 is arranged, a Y-axis linear motion module 1 is installed at the power output end of the X-axis linear motion module 1, a profiler module is installed at the power output end of the Y-axis linear motion module 1, and the linear motion direction output by the Y-axis linear motion module 1 and the linear motion direction output by the X-axis linear motion module 1 are perpendicular to each other, thereby ensuring that the profiler module has sufficient degrees of freedom. In addition, it should be noted that the linear motion direction output by the Y-axis linear motion module 1 and the linear motion direction output by the X-axis linear motion module 1 can both be horizontal directions, or one can be horizontal and the other vertical, and the specific direction can be selected according to actual production needs.

[0008] Furthermore, the profiler module includes a rotating bracket and a profiler. The rotating bracket is fixedly mounted on the power output end of the Y-axis linear motion module. The profiler is rotatably mounted on one end of the rotating bracket. The end of the profiler is sequentially connected to a profiler drive reducer and a profiler drive servo motor to ensure that the profiler can scan the step height difference and gap between the cover plate and the aluminum shell opening at multiple angles.

[0009] Further, the welding module includes a welding bracket, on which an X-axis linear motion module 2 is arranged, a Y-axis linear motion module 2 is installed at the power output end of the X-axis linear motion module 2, a laser welding module is installed at the power output end of the Y-axis linear motion module 2, and the linear motion direction output by the Y-axis linear motion module 2 and the linear motion direction output by the X-axis linear motion module 2 are perpendicular to each other, thereby ensuring that the laser welding module has sufficient degrees of freedom. In addition, it should be noted that the linear motion direction output by the Y-axis linear motion module 2 and the linear motion direction output by the X-axis linear motion module 2 can both be horizontal directions, or one can be horizontal and the other vertical, and the specific direction can be selected according to actual production needs.

[0010] Furthermore, the battery cell fixture includes a base plate mounted on a rotating disk, an upper positioning plate is mounted above the base plate, a short side positioning mechanism and a long side positioning mechanism are arranged on the upper positioning plate, and the short side positioning mechanism and the long side positioning mechanism are used to position the short side and the long side of the battery cell.

[0011] Furthermore, the long side positioning mechanism includes a long side positioning cylinder group 1 and a long side positioning cylinder group 2 which are symmetrically installed on the base plate. The telescopic end of the long side positioning cylinder group 1 is installed with a long side positioning block 1, and the telescopic end of the long side positioning cylinder group 2 is installed with a long side positioning block 2. The long side positioning block 1 and the long side positioning block 2 are arranged opposite to each other after extending out of the upper positioning plate, and can approach or move away from each other under the action of the long side positioning cylinder group 1 and the long side positioning cylinder group 2 to realize the corresponding long side positioning function.

[0012] Furthermore, the long-side positioning cylinder group 1 and the long-side positioning cylinder group 2 each include at least two cylinders, and their specific number and placement positions can be flexibly selected according to the size of the battery cell.

[0013] Furthermore, the short side positioning mechanism includes a short side positioning block arranged on the upper surface of the upper positioning plate and a short side positioning cylinder installed on the base plate, and a short side pressing block is installed at the telescopic end of the short side positioning cylinder. After the short side pressing block extends out of the upper positioning plate, it is arranged opposite to the short side positioning block, and the short side pressing block can approach or move away from the short side positioning block under the action of the short side positioning cylinder to achieve the corresponding short side positioning function. In addition, the short side pressing block is preferably made of peek material, and the short side positioning block is preferably made of equal height ceramic blocks, so that it can achieve the positioning reference function while avoiding damage to the cover plate and the aluminum shell due to extrusion.

[0014] Furthermore, the rotary drive mechanism includes a cam divider, the rotating shaft of the cam divider is transmission-connected to the rotating disk, the fixed end of the cam divider is fixedly mounted on the fixed platform, and the input end of the cam divider is transmission-connected to the power source, thereby driving the rotating disk to rotate at a corresponding angle through the cam divider.

[0015] Furthermore, the power source includes a servo motor, the output end of the servo motor is transmission-connected to a reducer, the output end of the reducer is transmission-connected to the input end of the cam divider, and the power is transmitted from the servo motor to the reducer and the cam divider in sequence; and because the servo motor has the characteristics of high precision and fast response, the utility model can respond quickly and have good high-speed rotation performance, thereby ensuring high-speed rotation of the turntable and greatly improving production efficiency.

[0016] It can be seen from the above technical scheme that the utility model has the following advantages: the utility model can not only maintain the characteristics of high-speed transmission speed through the turntable structure, save a lot of time and improve the cycle capacity; it can also detect the step height difference and gap between the cover plate and the aluminum shell opening before pre-welding operation, thereby reducing unnecessary operation processes and resource waste during the cover plate welding process, and further improving the overall production efficiency and cycle capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a specific implementation method of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the rotating disk and the cam divider in the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the battery core fixture in the utility model;

[0021] Figure 4 This is a structural diagram of the step detection module in the utility model;

[0022] Figure 5 It is a structural schematic diagram of the welding module in the utility model.

[0023] In the figure: 1. fixed table; 2. step detection module; 3. battery fixture; 4. rotating disk; 5. welding module; 6. cam divider; 7. short side positioning mechanism; 8. long side positioning mechanism; 9. upper positioning plate; 10. base plate; 11. detection bracket; 12. X-axis linear motion module one; 13. Y-axis linear motion module one; 14. profiler drive servo motor; 15. rotating bracket; 16. profiler; 17. laser welding module; 18. Y-axis linear motion module two; 19. X-axis linear motion module two; 20. welding bracket. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figures 1 to 5 As shown, the utility model provides a battery cover laser pre-welding integrated turntable device, which includes a rotating disk 4, and a rotating drive mechanism for driving the rotating disk 4 to rotate horizontally is arranged on the lower side of the rotating disk 4. Figure 2 As shown, the rotary drive mechanism includes a cam divider 6, the rotary shaft of the cam divider 6 is transmission-connected with the rotary disk 4, the fixed end of the cam divider 6 is fixedly mounted on the fixed platform 1, and the input end of the cam divider 6 is transmission-connected with the power source, so that the utility model can drive the rotary disk 4 to rotate at a corresponding angle under the action of the power source and the cam divider 6. And preferably, the power source includes a servo motor and a reducer, and the output end of the servo motor is transmission-connected with the input end of the reducer, and the output end of the reducer is transmission-connected with the input end of the cam divider 6, so that since the servo motor has the characteristics of high precision and fast response, the utility model can respond quickly and have good high-speed rotation performance, thereby ensuring the high-speed rotation of the turntable and greatly improving production efficiency.

[0026] At least four battery fixtures 3 for fixing the battery cells are evenly arranged on the upper surface of the rotating disk 4 along the circumferential direction. Figure 3 As shown, the battery cell fixture 3 includes a base plate 10 mounted on a rotating disk 4, an upper positioning plate 9 for fixing and supporting the battery cell is mounted above the base plate 10, and the upper positioning plate 9 is provided with a short side positioning mechanism 7 and a long side positioning mechanism 8 for positioning the short side and long side of the battery cell respectively.

[0027] Among them, the long side positioning mechanism 8 includes a long side positioning cylinder group 1 and a long side positioning cylinder group 2 symmetrically installed on the base plate 10, and the long side positioning cylinder group 1 and the long side positioning cylinder group 2 each include at least two cylinders, and the telescopic end of each cylinder in the long side positioning cylinder group 1 is installed with a long side positioning block 1, and the telescopic end of each cylinder in the long side positioning cylinder group 2 is installed with a long side positioning block 2. The long side positioning block 1 and the long side positioning block 2 extend out of the upper positioning plate 9 through the window reserved on the upper positioning plate 9 and are arranged one by one, and can approach or move away from each other under the action of each cylinder in the long side positioning cylinder group 1 and the long side positioning cylinder group 2 to realize the corresponding long side positioning function.

[0028] The short side positioning mechanism 7 preferably adopts a mode of positioning on one side and pressing on the other side. Specifically, the short side positioning mechanism 7 includes a short side positioning block arranged on the upper surface of the upper positioning plate 9 and a short side positioning cylinder installed on the base plate 10, and a short side pressing block is installed at the telescopic end of the short side positioning cylinder, and the short side pressing block extends out of the upper positioning plate 9 through a window reserved on the upper positioning plate 9 and is arranged opposite to the short side positioning block, and the short side pressing block can approach or move away from the short side positioning block under the action of the short side positioning cylinder to realize the corresponding short side positioning function.

[0029] In this way, when the loading gripper delivers the battery cell to the position, the cover plate and the battery cell can be first placed against the short side positioning block embedded on the upper positioning plate 9, and then the telescopic end of the short side positioning cylinder in the short side positioning mechanism 7 is controlled to extend, thereby fixing the short side of the battery cell; finally, the cylinders in the long side positioning cylinder group 1 and the long side positioning cylinder group 2 in the long side positioning mechanism 8 are controlled to extend at the same time to completely fix the battery cell, thereby ensuring the accuracy and stability of subsequent inspection and welding. In addition, as a preference, the short side clamping block, the long side positioning block 1 and the long side positioning block 2 are preferably made of peek material, and the short side positioning block is preferably made of an equal height ceramic block, so that it can achieve the positioning reference function while avoiding damage to the cover plate and the aluminum shell due to extrusion.

[0030] The outer ring of the rotating disk 4 is provided with a loading station, a testing station, a welding station and a unloading station in sequence along the circumferential direction. The loading station is used to install and place the corresponding loading robot or loading gripper, and the unloading station is used to install and place the corresponding unloading robot or unloading gripper.

[0031] A step detection module 2 is provided at the detection station, and the step detection module 2 includes a detection bracket 11, on which an X-axis linear motion module 12 is provided, and a Y-axis linear motion module 13 is installed at the power output end of the X-axis linear motion module 12, and the linear motion direction output by the Y-axis linear motion module 13 and the linear motion direction output by the X-axis linear motion module 12 are perpendicular to each other, and a profiler module is installed at the power output end of the Y-axis linear motion module 13, and the profiler module includes a rotating bracket 15 and a profiler 16, and the rotating bracket 15 is fixedly installed at the power output end of the Y-axis linear motion module 13, and the profiler 16 is rotatably installed at one end of the rotating bracket 15, and the end of the profiler 16 is sequentially connected to a profiler drive reducer and a profiler drive servo motor 14, so as to ensure that the profiler 16 has sufficient degrees of freedom and can scan the step height difference and gap between the cover plate and the aluminum shell opening at multiple angles.

[0032] A welding module 5 is provided at the welding station, and the welding module 5 includes a welding bracket 20, and an X-axis linear motion module 19 is provided on the welding bracket 20. A Y-axis linear motion module 18 is installed at the power output end of the X-axis linear motion module 19, and a laser welding module 17 is installed at the power output end of the Y-axis linear motion module 18. The linear motion direction output by the Y-axis linear motion module 18 and the linear motion direction output by the X-axis linear motion module 19 are perpendicular to each other, thereby ensuring that the laser welding module 17 has sufficient degrees of freedom and can perform spot welding on the cover plate and the aluminum shell opening at multiple angles.

[0033] In addition, it should be noted that the linear motion direction output by the Y-axis linear motion module 13 and the linear motion direction output by the X-axis linear motion module 12 can be both horizontal, or one can be horizontal and the other can be vertical; the linear motion direction output by the Y-axis linear motion module 18 and the linear motion direction output by the X-axis linear motion module 19 can be both horizontal, or one can be horizontal and the other can be vertical, and their specific directions can be selected according to actual production needs; and the Y-axis linear motion module 13, the Y-axis linear motion module 18, the X-axis linear motion module 12 and the X-axis linear motion module 19 can all be obtained directly by purchasing finished products, such as existing ball screw line modules, linear slide modules, etc.

[0034] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery cover laser pre-welding integrated turntable device, comprising a rotating disk, a rotating drive mechanism is arranged on one side of the rotating disk, and at least four battery cell fixtures are arranged along the circumferential direction on the upper surface of the rotating disk; characterized in that: The outer ring of the rotating disk is provided with a loading station, a detection station, a welding station and a unloading station in sequence along the circumferential direction. The detection station is provided with a step detection module, and the welding station is provided with a welding module.

2. The integrated laser pre-welding turntable device for battery cover according to claim 1, characterized in that: The step detection module includes a detection bracket, on which an X-axis linear motion module 1 is arranged, a Y-axis linear motion module 1 is installed at the power output end of the X-axis linear motion module 1, a profiler module is installed at the power output end of the Y-axis linear motion module 1, and the linear motion direction output by the Y-axis linear motion module 1 and the linear motion direction output by the X-axis linear motion module 1 are perpendicular to each other.

3. The battery cover laser pre-welding integrated turntable device according to claim 2, characterized in that: The profiler module comprises a rotating bracket and a profiler. The rotating bracket is fixedly mounted on the power output end of the Y-axis linear motion module 1, and the profiler is rotatably mounted on one end of the rotating bracket.

4. The battery cover laser pre-welding integrated turntable device according to claim 1, characterized in that: The welding module includes a welding bracket, on which an X-axis linear motion module 2 is arranged, a Y-axis linear motion module 2 is installed at the power output end of the X-axis linear motion module 2, a laser welding module is installed at the power output end of the Y-axis linear motion module 2, and the linear motion direction output by the Y-axis linear motion module 2 and the linear motion direction output by the X-axis linear motion module 2 are perpendicular to each other.

5. The battery cover laser pre-welding integrated turntable device according to claim 1, characterized in that: The battery core fixture comprises a base plate mounted on a rotating disk, an upper positioning plate is mounted above the base plate, and a short side positioning mechanism and a long side positioning mechanism are arranged on the upper positioning plate.

6. The battery cover laser pre-welding integrated turntable device according to claim 5, characterized in that: The long side positioning mechanism comprises a long side positioning cylinder group 1 and a long side positioning cylinder group 2 which are symmetrically installed on the base plate. The telescopic end of the long side positioning cylinder group 1 is installed with a long side positioning block 1, and the telescopic end of the long side positioning cylinder group 2 is installed with a long side positioning block 2. The long side positioning block 1 and the long side positioning block 2 are arranged opposite to each other after extending out of the upper positioning plate.

7. The battery cover laser pre-welding integrated turntable device according to claim 6, characterized in that: The long side positioning cylinder group 1 and the long side positioning cylinder group 2 each include at least two cylinders.

8. The battery cover laser pre-welding integrated turntable device according to claim 5, characterized in that: The short side positioning mechanism includes a short side positioning block arranged on the upper surface of the upper positioning plate and a short side positioning cylinder installed on the base plate. The telescopic end of the short side positioning cylinder is installed with a short side clamping block. After the short side clamping block extends out of the upper positioning plate, it is arranged opposite to the short side positioning block.

9. The battery cover laser pre-welding integrated turntable device according to claim 1, characterized in that: The rotary drive mechanism comprises a cam divider, a rotary shaft of the cam divider is transmission-connected with a rotary disk, a fixed end of the cam divider is fixedly mounted on a fixed platform, and an input end of the cam divider is transmission-connected with a power source.

10. The battery cover laser pre-welding integrated turntable device according to claim 9, characterized in that: The power source comprises a servo motor, the output end of the servo motor is transmission-connected with a reducer, and the output end of the reducer is transmission-connected with the input end of the cam divider.

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