Galvanometer laser welding clamp for new energy battery cover plate

Abstract

The invention relates to the technical field of battery processing, and provides a galvanometer laser welding clamp for a new energy battery cover plate, which comprises two symmetrically arranged battery clamping mechanisms, a lifting push rod is movably mounted in the middle of each battery clamping mechanism, and a cover plate clamping mechanism is arranged above the battery clamping mechanisms. The battery clamping mechanisms and the cover plate clamping mechanism are connected through a lifting push rod and a hydraulic push rod, and a connecting frame is telescopically connected between the two battery clamping mechanisms. A new energy battery and a battery cover plate are clamped and fixed through the battery clamping mechanism and the cover plate clamping mechanism correspondingly, feeding and discharging of the new energy battery and the battery cover plate are facilitated, the new energy battery and the battery cover plate are aligned, and welding is completed when the cover plate clamping mechanism and the welding positioning mechanism press the battery cover plate; the welding efficiency and welding quality of the lithium battery and the cover plate are improved, the levelness of the lithium battery cover plate is guaranteed, and the product quality in the lithium battery machining process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery processing, and particularly relates to a galvanometer laser welding fixture for a new energy battery cover plate. Background Art

[0002] During the manufacturing process of lithium-ion batteries, it is necessary to weld the battery cover plate to the sealing end of the battery case to seal the case. Existing battery cover plate welding equipment does not have functions such as automatically loading the battery core, pressing the cover plate, CCD detection, pre-welding, full welding, and automatically discharging. It is necessary to configure corresponding machines for each work process, resulting in a more cumbersome production process, lower welding accuracy, production efficiency, and automation level, and cannot meet the requirements of mass production of lithium-ion batteries.

[0003] Due to the high error rate of manual operation, it is easy to cause misalignment between the cover plate and the outer shell, and the misalignment is relatively large, resulting in low production efficiency, which is significantly different from market demand. In addition, the volume of the welding positioning fixture and the battery case is relatively large, making it not portable enough when welding the battery and the cover plate, inconvenient to use, and affecting the welding quality.

[0004] Therefore, we make improvements and propose a galvanometer laser welding fixture for a new energy battery cover plate. Summary of the Invention

[0005] The purpose of the present invention is to provide a galvanometer laser welding fixture for a new energy battery cover plate to solve the problems raised in the above background art.

[0006] To achieve the above invention purpose, the present invention provides a galvanometer laser welding fixture for a new energy battery cover plate, which includes two symmetrically arranged battery clamping mechanisms. A lifting push rod is movably installed in the middle of the battery clamping mechanism. A cover plate clamping mechanism is arranged above the battery clamping mechanism. The battery clamping mechanism and the cover plate clamping mechanism are connected by a lifting push rod and a hydraulic push rod. A connecting frame is telescopically connected between the two battery clamping mechanisms. A welding positioning mechanism is installed between the two cover plate clamping mechanisms. The new energy battery is clamped and fixed between the two battery clamping mechanisms, and the battery cover plate is clamped and fixed between the two cover plate clamping mechanisms. The lifting push rod and the hydraulic push rod drive the cover plate clamping mechanism to perform a flipping action and height adjustment to align the battery cover plate with the new energy battery. The welding positioning mechanism is pressed against the welding point position of the battery cover plate along with the welding of the laser.

[0007] As a further scheme of the present invention, the battery clamping mechanism includes a first clamping base. The bottom of the first clamping base is fixedly installed with a bottom plate. A crawler is installed above the inside of the bottom plate. A roller is installed in the middle of the bottom surface of the bottom plate. The included angle between the bottom plate and the ground is five degrees.

[0008] As a further solution of the present invention, an installation groove is provided on the back surface of the first clamping base, a connecting column is fixedly installed inside the installation groove, and the connecting frame is connected to the connecting column.

[0009] As a further solution of the present invention, a sliding groove is provided on the outer side of the back surface of the first clamping base, a side plate is fixedly installed at the front end of the first clamping base, the inner side surface and the outer side surface of the side plate are inclined at five degrees, a first connecting ring is fixedly installed at the upper end of the first clamping base, and the bottom end of the hydraulic push rod is hinged to the first connecting ring.

[0010] As a further solution of the present invention, the cover plate clamping mechanism includes a second clamping base, a second connecting ring and a third connecting ring are fixedly installed at the bottom end of the second clamping base, the second connecting ring is hinged to the lifting push rod, the third connecting ring is hinged to the upper end of the hydraulic push rod, a through hole is provided at the upper end of the second clamping base, a plurality of suction cups are installed on the bottom surface of the top plate of the second clamping base, and a horn-shaped guide plate is provided at the front end of the second clamping base.

[0011] As a further solution of the present invention, the welding positioning mechanism includes a positioning ring, cross bars are symmetrically connected to both ends of the positioning ring, connecting blocks are connected to the ends of the cross bars, and a spring is connected between the middle of the connecting blocks and the top surface of the cover plate clamping mechanism.

[0012] As a further solution of the present invention, the lifting push rod includes a sliding rod, the upper end of the sliding rod is hinged to the cover plate clamping mechanism, the lower end of the sliding rod is slidably installed in the battery clamping mechanism, and a bolt is installed on one side of the bottom end of the sliding rod, and the bolt rotates to adjust the tightness.

[0013] As a further solution of the present invention, the positioning ring is circular, and a washer of the same circular shape is connected to the bottom surface of the positioning ring, and the washer is a rubber corrugated washer.

[0014] As a further solution of the present invention, the connecting frame includes an X-link rod, both ends of the X-link rod are respectively connected to two battery clamping mechanisms, and an electric push rod is installed in the middle of the X-link rod.

[0015] The beneficial effects of the galvanometer laser welding fixture for a new energy battery cover plate provided by the present invention are as follows: 1. By setting a split battery clamping mechanism and a cover plate clamping mechanism, the new energy battery and the battery cover plate are respectively clamped and fixed by the battery clamping mechanism and the cover plate clamping mechanism. It is also convenient to load and unload the new energy battery and the battery cover plate. After the battery clamping mechanism and the cover plate clamping mechanism are flipped, the new energy battery and the battery cover plate are aligned, and welding is completed when the cover plate clamping mechanism and the welding positioning mechanism press the battery cover plate, improving the welding efficiency and welding quality of the lithium battery and the cover plate, ensuring the flatness of the lithium battery cover plate, and improving the product quality in the lithium battery processing process.

[0016] 2. By setting a bottom plate at the bottom of the first clamping base, and a roller is arranged in the middle of the bottom of the bottom plate. When the battery is clamped above the bottom plate, the bottom plate will tilt backward with the roller as the fulcrum, so that the new energy battery will automatically lean against the rear part of the first clamping base to ensure the position of the new energy battery. And when the battery is pushed along the bottom plate into the first clamping base, the connecting frame will be automatically adjusted according to the width of the battery, and the two battery clamping mechanisms will be clamped on both sides of the battery to ensure the alignment of the edges of the battery and the cover plate.

[0017] 3. By setting two cover plate clamping mechanisms to adsorb and fix both sides of the battery cover plate, and driving the battery cover plate to buckle above the new energy battery for positioning of the battery cover plate. And a welding positioning mechanism is connected in the middle of the cover plate clamping mechanism, and the positioning ring will be connected to the laser welder to keep the welding points flat during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 FIG. Figure 2 FIG. Figure 3 FIG. Figure 4 FIG. Figure 5Schematic diagram of the cover plate clamping mechanism and the welding positioning mechanism of a galvanometer laser welding fixture for a new energy battery cover plate provided by this application; Figure 6 Schematic diagram of the connecting frame structure of a galvanometer laser welding fixture for a new energy battery cover plate provided by this application; Figure 7 Schematic diagram of the positioning ring structure of a galvanometer laser welding fixture for a new energy battery cover plate provided by this application.

[0020] In the figure: 1. Battery clamping mechanism; 11. First clamping base; 12. Base plate; 13. Installation groove; 14. Connecting column; 15. Side plate; 16. Slide groove; 17. First connecting ring; 18. Roller; 19. Track; 2. Cover plate clamping mechanism; 21. Second clamping base; 22. Second connecting ring; 23. Third connecting ring; 24. Through hole; 25. Guide plate; 26. Suction cup; 3. Welding positioning mechanism; 31. Positioning ring; 32. Washer; 33. Cross bar; 34. Connecting block; 35. Spring; 4. Lifting push rod; 41. Slide rod; 42. Bolt; 5. Hydraulic push rod; 6. New energy battery; 7. Battery cover plate; 8. Connecting frame; 81. X-link; 82. Electric push rod. Specific embodiments

[0021] The following combines the specification drawings and embodiments to further describe the specific embodiments of the present invention in detail. The following embodiments are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] As Figures 1-7 shown, this embodiment proposes a galvanometer laser welding fixture for a new energy battery cover plate, including two symmetrically arranged battery clamping mechanisms 1. A lifting push rod 4 is movably installed in the middle of the battery clamping mechanism 1. A cover plate clamping mechanism 2 is arranged above the battery clamping mechanism 1. The battery clamping mechanism 1 and the cover plate clamping mechanism 2 are connected by a lifting push rod 4 and a hydraulic push rod 5. A connecting frame 8 is telescopically connected between the two battery clamping mechanisms 1. A welding positioning mechanism 3 is installed between the two cover plate clamping mechanisms 2. A new energy battery 6 is clamped and fixed between the two battery clamping mechanisms 1, and a battery cover plate 7 is clamped and fixed between the two cover plate clamping mechanisms 2. The lifting push rod 4 and the hydraulic push rod 5 drive the cover plate clamping mechanism 2 to perform a flipping action and height adjustment to align the battery cover plate 7 with the new energy battery 6. The welding positioning mechanism 3 is pressed against the welding point of the battery cover plate 7 along with the welding of the laser.

[0023] The battery clamping mechanism 1 includes a first clamping base 11. A bottom plate 12 is fixedly installed at the bottom of the first clamping base 11. An endless track 19 is installed above the interior of the bottom plate 12. A roller 18 is installed in the middle of the bottom surface of the bottom plate 12. The included angle between the bottom plate 12 and the ground is five degrees. The endless track 19 is installed on the bottom plate 12, and a slope is provided at the front end of the bottom plate 12, which is convenient for transporting the battery from the transmission device into the fixture, reducing the difficulty of battery handling. The installation of the roller 18 enables the bottom plate 12 to tilt with the change of the center of gravity of the first clamping base 11, facilitating the battery to be closely attached inside the first clamping base 11 for positioning the battery.

[0024] An installation groove 13 is formed on the back surface of the first clamping base 11. A connecting column 14 is fixedly installed inside the installation groove 13. The connecting frame 8 is connected to the connecting column 14. The settings of the installation groove 13 and the connecting column 14 facilitate the installation and storage of the connecting frame 8, adjusting the width between the two battery clamping mechanisms 1 to clamp the battery.

[0025] A chute 16 is formed on the outer side near the back surface of the first clamping base 11. A side plate 15 is fixedly installed at the front end of the first clamping base 11. The inner side surface and the outer side surface of the side plate 15 are inclined at five degrees. A first connecting ring 17 is fixedly installed at the upper end of the first clamping base 11. The bottom end of the hydraulic push rod 5 is hinged to the first connecting ring 17. A lifting push rod 4 is slidably installed inside the first clamping base 11. The height of the cover plate clamping mechanism 2 is adjusted by the tightness of the lifting push rod 4. The setting of the side plate 15 enables the battery to slide on the bottom plate 12 for centering adjustment, improving the clamping accuracy of the battery.

[0026] The cover plate clamping mechanism 2 includes a second clamping base 21. A second connecting ring 22 and a third connecting ring 23 are fixedly installed at the bottom end of the second clamping base 21. The second connecting ring 22 is hinged to the lifting push rod 4, and the third connecting ring 23 is hinged to the upper end of the hydraulic push rod 5. A through hole 24 is formed at the upper end of the second clamping base 21. A plurality of suction cups 26 are installed on the bottom surface of the top plate of the second clamping base 21. A horn-shaped guide plate 25 is provided at the front end of the second clamping base 21. The cover plate clamping mechanism 2 is connected to the battery clamping mechanism 1 through the lifting push rod 4 and the hydraulic push rod 5. When the second clamping base 21 is turned backward to be docked with the blanking device of the cover plate, the cover plate will slide along the second clamping base 21 to the innermost side of the second clamping base 21, and then the two sides of the battery cover plate 7 are adsorbed and fixed by the suction cups 26. Along with the flipping of the second clamping base 21, it is aligned with the new energy battery 6, facilitating the precise welding of the new energy battery 6 and the battery cover plate 7.

[0027] The welding positioning mechanism 3 includes a positioning ring 31. Symmetrically connected to both ends of the positioning ring 31 are cross bars 33. Connected to the end of the cross bar 33 is a connecting block 34. A spring 35 is connected between the connecting block 34 and the middle of the top surface of the cover plate clamping mechanism 2. After the positioning ring 31 is connected to the welding laser, during the translation of the laser, the cross bars 33 on both sides of the positioning ring 31 slide within the through holes 24, and the positioning ring 31 presses on the welding position of the laser to ensure smooth welding.

[0028] The lifting push rod 4 includes a sliding rod 41. The upper end of the sliding rod 41 is hinged to the cover plate clamping mechanism 2. The lower end of the sliding rod 41 is slidably installed within the battery clamping mechanism 1, and on one side of the bottom end of the sliding rod 41 is installed a bolt 42. The bolt 42 rotates to adjust the tightness. The tightness of the bolt 42 controls the sliding of the sliding rod 41 within the sliding groove 16 to adjust the overall height of the cover plate clamping mechanism 2, facilitating the positioning of the battery and the cover plate.

[0029] The positioning ring 31 is circular, and the bottom surface of the positioning ring 31 is connected to a washer 32 of the same circular shape. The washer 32 is a rubber corrugated washer, and the washer 32 is pressed tightly on the upper surface of the cover plate to avoid scratching the cover plate.

[0030] The connecting frame 8 includes an X-link 81. The two ends of the X-link 81 are respectively connected to the two battery clamping mechanisms 1. An electric push rod 82 is installed in the middle of the X-link 81. The electric push rod 82 pushes and pulls to deform the X-link 81, adjusting the width between the two battery clamping mechanisms 1 at both ends of the connecting frame 8 to clamp the battery.

[0031] Specifically, when the galvanometer laser welding fixture for the new energy battery cover plate is in use: A slope is provided at the front end of the bottom plate 12. The battery is transported from the conveying device into the fixture. After the battery passes through the rollers 18, the center of gravity of the bottom plate 12 and the first clamping base 11 changes and tilts backward, causing the battery to lean tightly inside the first clamping base 11. The electric push rod 82 tightens the X-link 81 to adjust the width between the two battery clamping mechanisms 1 to clamp the battery. The second clamping base 21 folds backward to dock with the blanking device of the cover plate. The cover plate slides from the blanking device to the innermost side of the second clamping base 21. The suction cup 26 adsorbs and fixes the battery cover plate 7. The tightness of the lifting push rod 4 adjusts the height of the cover plate clamping mechanism 2. As the second clamping base 21 flips, the battery cover plate 7 is pressed and aligned with the new energy battery 6 for precise welding of the new energy battery 6 and the battery cover plate 7. After the positioning ring 31 is connected to the welding laser, during the translation of the laser, the cross bars 33 on both sides of the positioning ring 31 slide within the through holes 24, and the positioning ring 31 presses on the welding position of the laser to improve the welding efficiency and quality of the lithium battery and the cover plate, ensure the flatness of the lithium battery cover plate, and improve the product quality during the processing of the lithium battery. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0032] The above embodiments are only used to illustrate the present invention and not to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should all be covered within the scope of the claims of the present invention.

Claims

1. A galvanometer laser welding fixture for a new energy battery cover plate, comprising two symmetrically arranged battery clamping mechanisms (1), characterized in that: A lifting push rod (4) is movably installed in the middle of the battery clamping mechanism (1). A cover plate clamping mechanism (2) is arranged above the battery clamping mechanism (1). The battery clamping mechanism (1) and the cover plate clamping mechanism (2) are connected by the lifting push rod (4) and the hydraulic push rod (5). A connecting frame (8) is telescopically connected between the two battery clamping mechanisms (1). A welding positioning mechanism (3) is installed between the two cover plate clamping mechanisms (2). The new energy battery (6) is clamped and fixed between the two battery clamping mechanisms (1), and the battery cover plate (7) is clamped and fixed between the two cover plate clamping mechanisms (2). The lifting push rod (4) and the hydraulic push rod (5) drive the cover plate clamping mechanism (2) to perform a flipping action and height adjustment to align the battery cover plate (7) with the new energy battery (6). The welding positioning mechanism (3) is pressed against the welding point position of the battery cover plate (7) along with the welding of the laser.

2. The galvanometer laser welding fixture for a new energy battery cover plate according to claim 1, characterized in that: The battery clamping mechanism (1) includes a first clamping base (11). A bottom plate (12) is fixedly installed at the bottom of the first clamping base (11). A crawler belt (19) is installed above the inside of the bottom plate (12). A roller (18) is installed in the middle of the bottom surface of the bottom plate (12). The included angle between the bottom plate (12) and the ground is five degrees.

3. The galvanometer laser welding fixture for a new energy battery cover plate according to claim 2, characterized in that: An installation groove (13) is formed on the back surface of the first clamping base (11). A connecting column (14) is fixedly installed inside the installation groove (13). The connecting frame (8) is connected to the connecting column (14).

4. The galvanometer laser welding fixture for a new energy battery cover plate according to claim 2, characterized in that: A chute (16) is formed on the outer side of the back surface of the first clamping base (11). A side plate (15) is fixedly installed at the front end of the first clamping base (11). The inner side surface and the outer side surface of the side plate (15) are inclined at an angle of five degrees. A first connecting ring (17) is fixedly installed at the upper end of the first clamping base (11). The bottom end of the hydraulic push rod (5) is hinged to the first connecting ring (17).

5. The galvanometer laser welding fixture for a new energy battery cover plate according to claim 1, characterized in that: The cover plate clamping mechanism (2) includes a second clamping base (21). A second connecting ring (22) and a third connecting ring (23) are fixedly installed at the bottom end of the second clamping base (21). The second connecting ring (22) is hinged to the lifting push rod (4). The upper end of the third connecting ring (23) is hinged to the hydraulic push rod (5). A through hole (24) is formed at the upper end of the second clamping base (21). A plurality of suction cups (26) are installed on the bottom surface of the top plate of the second clamping base (21). A horn-shaped guide plate (25) is arranged at the front end of the second clamping base (21).

6. The galvanometer laser welding fixture for a new energy battery cover plate according to claim 1, characterized in that: The welding positioning mechanism (3) includes a positioning ring (31). Cross bars (33) are symmetrically connected to both ends of the positioning ring (31). A connecting block (34) is connected to the end of the cross bar (33). A spring (35) is connected between the connecting block (34) and the middle of the top surface of the cover plate clamping mechanism (2).

7. The galvanometer laser welding fixture for a new energy battery cover plate according to claim 1, wherein: The lifting push rod (4) includes a sliding rod (41). The upper end of the sliding rod (41) is hinged to the cover plate clamping mechanism (2). The lower end of the sliding rod (41) is slidably installed in the battery clamping mechanism (1). And a bolt (42) is installed on one side of the bottom end of the sliding rod (41), and the bolt (42) rotates to adjust the tightness.

8. The galvanometer laser welding fixture for a new energy battery cover plate according to claim 6, wherein: The positioning ring (31) is circular, and the bottom surface of the positioning ring (31) is connected to a washer (32) of the same circular shape. The washer (32) is a rubber corrugated washer.

9. The galvanometer laser welding fixture for a new energy battery cover plate according to claim 1, characterized in that: The connecting frame (8) includes an X-link (81). The two ends of the X-link (81) are respectively connected to two battery clamping mechanisms (1), and an electric push rod (82) is installed in the middle of the X-link (81).

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