Welding device and battery production equipment

Abstract

The utility model provides a welding device and battery production equipment. The welding device comprises a rack, a moving mechanism, a pressing and fixing mechanism and a welding scanning mechanism, the moving mechanism comprises a horizontal moving module and a vertical moving module which are connected, and the horizontal moving module is installed on the rack; the pressing and fixing mechanism comprises a clamp and a driving assembly, the clamp and the driving assembly are both installed on the rack, the driving assembly is used for pressing a roll core and a convergence piece to the clamp, and the clamp is provided with a welding through hole; the welding scanning mechanism comprises a laser device and a contour scanner, the laser device and the contour scanner are both installed on the vertical moving module, and the contour scanner is used for scanning the welding area of the roll core and the welding area of the convergence piece. The vertical moving module drives the laser to move up and down according to the obtained deformation data, and then it is guaranteed that the welding focal length of the laser acting on the welding area is consistent.

Description

Technical Field

[0001] The present disclosure relates to the field of battery welding devices, and in particular to a welding device and battery production equipment. Background Art

[0002] During the production of lithium batteries, the busbars are welded to the poles and the cores to make the poles and the cores conductive. The welding methods for the cores and busbars are generally ultrasonic welding, laser welding, etc. Laser welding is to weld the contact surface of the core and the busbars by emitting a small energy spot from the laser.

[0003] For example, a Chinese patent with application number: CN202223154021.8 discloses a battery core welding device, including a welding device, a pressing plate, a fixing device and a manipulator, the welding device includes a welding machine and a frame, the welding machine emits a laser to weld the busbar, and a mounting seat that moves along the X-axis direction is provided on the frame; the pressing plate is arranged on the mounting seat, and a first suction cup for adsorbing the busbar is provided on the first side of the pressing plate, and a plurality of first avoidance holes for avoiding the welding position are provided on the pressing plate; a fixing plate is provided on the fixing device, and the fixing plate can move along the X-axis direction so that the fixing plate and the pressing plate clamp the core; the manipulator is used to transfer the busbar, and the manipulator moves along the Y-axis direction to move the busbar to a position facing the first side of the pressing plate.

[0004] However, the structural design of the above welding device has the following problems during use:

[0005] The above-mentioned welding device presses the core by means of a fixing plate and a pressure plate, so that the busbar abuts against the core, and then the abutting surfaces of the busbar and the core are welded by a laser with a fixed welding focal length. However, since the busbar and the core will deform under the pressing action of the pressure plate, the deformation amount of the abutting surface between the busbar and the core is inconsistent. If the laser welds the abutting surface with inconsistent deformation amount with a fixed welding focal length, it will cause poor welding conditions such as cold welding or transition welding. Utility Model Content

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a welding device and battery production equipment that can automatically adjust the welding focal length and improve the welding yield.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] A welding device, comprising:

[0009] frame;

[0010] A moving mechanism, the moving mechanism comprising a horizontal moving module and a vertical moving module connected to each other, the horizontal moving module being mounted on the frame;

[0011] A clamping and fixing mechanism, the clamping and fixing mechanism comprises a clamp and a driving assembly, the clamp and the driving assembly are both mounted on the frame, the driving assembly is used to clamp the winding core and the busbar to the clamp, and the clamp is provided with a welding through hole;

[0012] A welding scanning mechanism, the welding scanning mechanism includes a laser and a contour scanner, the laser and the contour scanner are both installed on the vertical moving module, and the contour scanner is used to scan the welding area of ​​the winding core and the busbar.

[0013] In one embodiment, the horizontal moving module includes a horizontal driving member and a horizontal moving shaft, the horizontal driving member is installed on the frame, and the horizontal moving shaft is connected to the output end of the horizontal driving member.

[0014] In one embodiment, the vertical moving module includes a vertical driving member and a vertical moving shaft. The vertical driving member is installed on the horizontal moving shaft, and the output end of the vertical driving member is connected to the vertical moving shaft.

[0015] In one embodiment, the profile scanner and the laser are mounted on the same side of the vertical moving axis.

[0016] In one embodiment, the driving assembly includes a lifting driving unit and a containing platform, the lifting driving unit is installed on the frame, and the output end of the lifting driving unit is connected to the containing platform.

[0017] In one embodiment, the lifting drive unit is a cylinder.

[0018] In one of the embodiments, a calibration groove is provided on a side surface of the fixture adjacent to the vertical moving module, and the calibration groove is provided with a calibration reference surface.

[0019] In one embodiment, the correction groove is rectangular.

[0020] In one embodiment, the profile scanner is in contact with the laser.

[0021] A battery production device comprises the welding device described in any one of the above embodiments.

[0022] Compared with the prior art, the present invention has at least the following advantages:

[0023] In the above-mentioned welding device, the core and the busbar are pressed onto the fixture under the support of the driving component, and the contour scanner is moved horizontally under the drive of the horizontal moving module to detect the deformation data of the welding area of ​​the core and the busbar. According to the obtained deformation data, the vertical moving module drives the laser to move up and down, thereby ensuring that the welding focal length of the laser acting on the welding area is consistent, thereby achieving the effect of automatically adjusting the welding focal length of the welding area, avoiding poor welding such as cold welding or transition welding generated when welding the core and the busbar, and improving the welding yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic structural diagram of a welding device according to an embodiment;

[0026] Figure 2 for Figure 1 Another structural schematic diagram of the welding device shown;

[0027] Figure 3 for Figure 1 Another structural schematic diagram of the welding device shown;

[0028] Figure 4 A schematic diagram of a welding area of ​​a winding core according to an embodiment;

[0029] Figure 5 for Figure 4 Schematic diagram of deformation data of the welding area of ​​the winding core shown. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0033] The present disclosure provides a welding device, including a frame, a moving mechanism, a clamping and fixing mechanism and a welding scanning mechanism, wherein the moving mechanism includes a horizontal moving module and a vertical moving module connected to each other, and the horizontal moving module is installed on the frame; the clamping and fixing mechanism includes a clamp and a driving component, and the clamp and the driving component are both installed on the frame, and the driving component is used to press the winding core and the bus bar against the clamp, and the clamp is provided with a welding through hole; the welding scanning mechanism includes a laser and a contour scanner, and the laser and the contour scanner are both installed on the vertical moving module, and the contour scanner is used to scan the welding areas of the winding core and the bus bar.

[0034] In the above-mentioned welding device, the core and the busbar are pressed onto the fixture under the support of the driving component, and the contour scanner is moved horizontally under the drive of the horizontal moving module to detect the deformation data of the welding area of ​​the core and the busbar. According to the obtained deformation data, the vertical moving module drives the laser to move up and down, thereby ensuring that the welding focal length of the laser acting on the welding area is consistent, thereby achieving the effect of automatically adjusting the welding focal length of the welding area, avoiding poor welding such as cold welding or transition welding generated when welding the core and the busbar, and improving the welding yield.

[0035] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0036] like Figures 1 to 3As shown, a welding device 10 of an embodiment includes a frame 100, a moving mechanism 200, a clamping and fixing mechanism 300 and a welding scanning mechanism 400. The moving mechanism 200 includes a horizontal moving module 210 and a vertical moving module 220 connected to each other. The horizontal moving module 210 is installed on the frame 100 so that the vertical moving module 220 is driven to move when the horizontal moving module 210 moves. Further, the clamping and fixing mechanism 300 includes a clamp 310 and a driving component 320. The clamp 310 and the driving component 320 are both installed on the frame 100. The driving component 320 is used to clamp the core 10a and the busbar to the clamp 310. The clamp 310 is provided with a welding through hole so that the light of the laser 410 passes through the welding through hole to act on the welding area of ​​the core 10a and the busbar. Furthermore, the welding scanning mechanism 400 includes a laser 410 and a contour scanner 420, both of which are installed on the vertical moving module 220. The contour scanner 420 is used to scan the welding area of ​​the winding core 10a and the busbar, and the deformation data of the welding area is obtained through the contour scanner 420.

[0037] In this embodiment, the horizontal moving module 210, the vertical moving module 220, the contour scanner 420 and the laser 410 are all electrically connected to the background control system. The winding core 10a and the busbar are pressed against the clamp 310 by the driving component 320. The horizontal moving module 210 moves horizontally to drive the contour scanner 420 on the vertical moving module 220 to move horizontally. The contour scanner 420 adopts a high-precision CCD scanner to accurately obtain the deformation data of the welding area of ​​the winding core 10a and the busbar, and upload the deformation data to the background control system, so that when the laser 410 moves horizontally, the vertical moving module 220 drives the laser 410 to move up and down according to the different deformation amounts of the welding area, thereby ensuring that the welding focal length of the laser 410 is consistent with that of the welding area, avoiding poor welding problems such as cold welding or transition welding due to inconsistent deformation amounts of the welding area, and improving the welding yield.

[0038] like Figure 4 and Figure 5 As shown, further, the deformation data of the welding area scanned by the contour scanner 420 can be marked, such as the peak of the deformation is A, the trough is C, and B is the middle value of the peak A and the trough C. During welding, the welding distance between the laser 410 and the welding area is adjusted accordingly according to the measured deformation data. For example, the laser 410 rises when passing through the welding area of ​​the peak A, and the laser 410 drops at the trough C, thereby making the welding focal length of the entire welding area of ​​the core 10a and the busbar consistent, thereby avoiding poor welding problems such as cold welding or transition welding.

[0039] It should be noted that the method by which the background control system controls the operation of the horizontal moving module 210, the vertical moving module 220, the contour scanner 420 and the laser 410 belongs to the prior art and is not within the protection scope of the present disclosure. The present disclosure only protects the position and connection relationship between the components of the welding device 10.

[0040] In the welding device 10, the core 10a and the busbar are pressed onto the fixture 310 under the support of the driving component 320. The contour scanner 420 moves horizontally under the drive of the horizontal moving module 210 to detect the deformation data of the welding area of ​​the core 10a and the busbar. The vertical moving module 220 drives the laser 410 to move up and down according to the obtained deformation data, thereby ensuring that the welding focal length of the laser 410 acting on the welding area is consistent, thereby achieving the effect of automatically adjusting the welding focal length of the welding area, avoiding poor welding such as cold welding or transition welding generated when the core 10a and the busbar are welded, and improving the welding yield.

[0041] like Figure 2 As shown, in one embodiment, the horizontal moving module 210 includes a horizontal driving member 211 and a horizontal moving shaft 212 . The horizontal driving member 211 is installed on the frame 100 , and the horizontal moving shaft 212 is connected to the output end of the horizontal driving member 211 .

[0042] It can be understood that the output end of the horizontal driving member 211 drives the horizontal moving shaft 212 to move horizontally, thereby driving the vertical moving module 220 on the horizontal moving shaft 212 to move horizontally, thereby causing the laser 410 and the profile scanner 420 on the vertical moving module 220 to move horizontally. In this embodiment, the horizontal driving member 211 is a motor.

[0043] like Figure 2 As shown, in one embodiment, the vertical moving module 220 includes a vertical driving member 221 and a vertical moving shaft 222, the vertical driving member 221 is installed on the horizontal moving shaft 212, the output end of the vertical driving member 221 is connected to the vertical moving shaft 222, and the laser 410 and the contour scanner 420 are both installed on the vertical moving shaft 222.

[0044] It can be understood that the horizontal moving shaft 212 drives the vertical moving module 220 to move horizontally, and the vertical moving shaft 222 drives the laser 410 to move up and down to adjust the welding focal length. In this embodiment, the vertical driving member 221 is a motor.

[0045] like Figure 2As shown, in one embodiment, the contour scanner 420 and the laser 410 are installed on the same side of the vertical moving axis 222, so that the overall structure of the welding device 10 is more compact.

[0046] like Figure 2 As shown, in one embodiment, the driving assembly 320 includes a lifting driving unit 321 and a placing platform 322, the lifting driving unit 321 is installed on the frame 100, and the output end of the lifting driving unit 321 is connected to the placing platform 322. In this embodiment, the winding core 10a and the busbar are placed on the placing platform 322, and the lifting driving unit 321 moves upward to press the winding core 10a and the busbar onto the fixture 310.

[0047] In one embodiment, the lifting drive unit 321 is a cylinder. Of course, in other embodiments, the lifting drive unit 321 can also be a motor or a cylinder, so that the lifting drive unit 321 drives the containing platform 322 to move up and down.

[0048] like Figure 2 and Figure 3 As shown, in one embodiment, a calibration groove 311 is provided on a side of the fixture 310 adjacent to the vertical moving module 220 , and the calibration groove 311 is provided with a calibration reference surface 311 a .

[0049] It can be understood that when the laser 410 passes through the correction groove 311, the initial power of the laser 410 is adjusted through the correction reference surface 311a, welding is performed with the initial power when passing through the welding through hole, and the welding focal length is adjusted by adjusting the position of the laser 410 up and down.

[0050] In one embodiment, the correction groove 311 is rectangular, so that the groove wall of the correction groove 311 is a plane.

[0051] In one embodiment, the contour scanner 420 is in contact with the laser 410 to make the welding device 10 more compact.

[0052] The present application also provides a battery production device, comprising the welding device 10 described in any one of the above embodiments.

[0053] Compared with the prior art, the present invention has at least the following advantages:

[0054] In the welding device 10, the core 10a and the busbar are pressed onto the fixture 310 under the support of the driving component 320. The contour scanner 420 moves horizontally under the drive of the horizontal moving module 210 to detect the deformation data of the welding area of ​​the core 10a and the busbar. The vertical moving module 220 drives the laser 410 to move up and down according to the obtained deformation data, thereby ensuring that the welding focal length of the laser 410 acting on the welding area is consistent, thereby achieving the effect of automatically adjusting the welding focal length of the welding area, avoiding poor welding such as cold welding or transition welding generated when the core 10a and the busbar are welded, and improving the welding yield.

[0055] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be based on the attached claims.

Claims

1. A welding device, characterized in that: include: frame; A moving mechanism, the moving mechanism comprising a horizontal moving module and a vertical moving module connected to each other, the horizontal moving module being mounted on the frame; A clamping and fixing mechanism, the clamping and fixing mechanism comprises a clamp and a driving assembly, the clamp and the driving assembly are both mounted on the frame, the driving assembly is used to clamp the winding core and the busbar to the clamp, and the clamp is provided with a welding through hole; A welding scanning mechanism, the welding scanning mechanism includes a laser and a contour scanner, the laser and the contour scanner are both installed on the vertical moving module, and the contour scanner is used to scan the welding area of ​​the winding core and the busbar.

2. The welding device according to claim 1, characterized in that: The horizontal moving module comprises a horizontal driving member and a horizontal moving shaft. The horizontal driving member is installed on the frame, and the horizontal moving shaft is connected to the output end of the horizontal driving member.

3. The welding device according to claim 2, characterized in that: The vertical moving module includes a vertical driving member and a vertical moving shaft. The vertical driving member is installed on the horizontal moving shaft. The output end of the vertical driving member is connected to the vertical moving shaft. The laser and the contour scanner are both installed on the vertical moving shaft.

4. The welding device according to claim 3, characterized in that: The profile scanner and the laser are installed on the same side of the vertical moving axis.

5. The welding device according to claim 1, characterized in that: The driving assembly comprises a lifting driving part and a containing platform. The lifting driving part is installed on the frame, and the output end of the lifting driving part is connected to the containing platform.

6. The welding device according to claim 5, characterized in that: The lifting drive unit is a cylinder.

7. The welding device according to claim 1, characterized in that: A side surface of the clamp adjacent to the vertical moving module is provided with a calibration groove, and the calibration groove is provided with a calibration reference surface.

8. The welding device according to claim 7, characterized in that: The correction groove is rectangular.

9. The welding device according to claim 1, characterized in that: The profile scanner is in contact with the laser.

10. A battery production device, characterized in that: A welding device comprising the welding device according to any one of claims 1 to 9.

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