A galvanometer laser welding fixture for new energy battery cover

Abstract

The present invention relates to the field of battery processing technology, and proposes a galvanometer laser welding fixture for a new energy battery cover plate, comprising two symmetrically arranged battery clamping mechanisms, a lifting push rod movably installed in the middle of the battery clamping mechanism, a cover plate clamping mechanism arranged above the battery clamping mechanism, the battery clamping mechanism and the cover plate clamping mechanism being connected via a lifting push rod and a hydraulic push rod, and a connecting frame being telescopically connected between the two battery clamping mechanisms. The new energy battery and the battery cover plate are clamped and fixed respectively by the battery clamping mechanism and the cover plate clamping mechanism, making it convenient to load and unload the new energy battery and the battery cover plate, align the new energy battery and the battery cover plate, and complete welding when the cover plate clamping mechanism and the welding positioning mechanism are in a pressing state on the battery cover plate, thereby improving the welding efficiency and welding quality of the lithium battery and the cover plate, ensuring the horizontality of the lithium battery cover plate, and improving the product quality during the lithium battery processing process.

Description

Technical Field

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

[0002] During the manufacturing process of lithium-ion batteries, the battery cover needs to be welded to the sealed end of the battery shell to seal the shell. Existing battery cover welding equipment does not have the ability to automatically perform functions such as automatic cell loading, cover press installation, CCD detection, pre-welding, full welding, and automatic unloading. Corresponding machines need to be configured for each workflow to operate. As a result, the entire production process is relatively cumbersome, with low welding accuracy, production efficiency and degree of automation, and cannot meet the needs of large-scale lithium-ion battery production.

[0003] Due to the high error rate of manual operation, the cover and the shell are easily misaligned, and the misalignment is relatively large, resulting in low production efficiency and a significant gap with market demand. In addition, the welding positioning fixture and the battery shell are relatively large in size, which is not light enough when welding the battery and the cover, and is not convenient to use, affecting the welding quality.

[0004] Therefore, we made improvements to this and proposed a galvanometer laser welding fixture for new energy battery covers. 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 to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides a galvanometer laser welding fixture for a new energy battery cover, comprising two symmetrically arranged battery clamping mechanisms, a lifting push rod movably installed in the middle of the battery clamping mechanism, a cover clamping mechanism arranged above the battery clamping mechanism, the battery clamping mechanism and the cover 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 clamping mechanisms, the new energy battery is clamped and fixed in the middle of the two battery clamping mechanisms, the battery cover is clamped and fixed in the middle of the two cover clamping mechanisms, the lifting push rod and the hydraulic push rod drive the cover clamping mechanism to flip and adjust the height, align the battery cover with the new energy battery, and the welding positioning mechanism is pressed against the welding point of the battery cover as the laser welds.

[0007] As a further solution of the present invention, the battery clamping mechanism includes a first clamping base, a base plate is fixedly installed on the bottom of the first clamping base, a track is installed on the upper inner part of the base plate, a roller is installed in the middle of the bottom surface of the base plate, and the angle between the base plate and the ground is five degrees.

[0008] As a further solution of the present invention, a mounting groove is provided on the back side of the first clamping base, a connecting column is fixedly installed inside the mounting 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 side of the first clamping base, a side panel is fixedly installed on the front end of the first clamping base, the inner side surface and the outer side surface of the side panel are inclined at five degrees, and a first connecting ring is fixedly installed on 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, the bottom end of the second clamping base is fixedly installed with a second connecting ring and a third connecting ring, 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 opened 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 trumpet-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, the two ends of the positioning ring are symmetrically connected with cross bars, the ends of the cross bars are connected with connecting blocks, and a spring is connected in the middle of the connecting block and the top surface of the cover 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 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 is rotated to adjust the tightness.

[0013] As a further solution of the present invention, the positioning ring is annular, and the bottom surface of the positioning ring is connected to a gasket with the same annular shape, and the gasket is a corrugated gasket made of rubber material.

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

[0015] The present invention provides a galvanometer laser welding fixture for a new energy battery cover, which has the following beneficial effects:

[0016] 1. By setting up a separate battery clamping mechanism and a cover plate clamping mechanism, the new energy battery and the battery cover plate are clamped and fixed by the battery clamping mechanism and the cover plate clamping mechanism respectively, and the new energy battery and the battery cover plate can be conveniently loaded and unloaded. 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 the welding is completed when the cover plate clamping mechanism and the welding positioning mechanism are in a pressing state on the battery cover plate, thereby improving the welding efficiency and welding quality of the lithium battery and the cover plate, ensuring the horizontality of the lithium battery cover plate, and improving the product quality during the lithium battery processing process.

[0017] 2. By setting a bottom plate at the bottom of the first clamping base, and setting a roller in the middle of the bottom of the bottom plate, when the battery is clamped on the top of the bottom plate, the bottom plate will tilt backward with the roller as the fulcrum, so that the new energy battery will automatically be close to the rear of the first clamping base to ensure the position of the new energy battery, and when the battery is pushed into the inside of the first clamping base along the bottom plate, the connecting frame will automatically adjust according to the width of the battery, clamping the two battery clamping mechanisms on both sides of the battery to ensure that the edges of the battery and the cover are aligned.

[0018] 3. By setting up two cover clamping mechanisms, the two sides of the battery cover are adsorbed and fixed, and the battery cover is driven to buckle on top of the new energy battery to position the battery cover. A welding positioning mechanism is connected in the middle of the cover clamping mechanism, and the positioning ring will be connected to the laser welder to keep the welding point flat during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of a galvanometer laser welding fixture for a new energy battery cover provided in this application;

[0021] Figure 2 This is a rear view of the structure of a galvanometer laser welding fixture for a new energy battery cover provided in this application;

[0022] Figure 3 A side view of a galvanometer laser welding fixture for a new energy battery cover provided in this application;

[0023] Figure 4 This is a schematic diagram of the battery clamping mechanism structure of a galvanometer laser welding fixture for a new energy battery cover provided in this application;

[0024] Figure 5 This is a schematic structural diagram of the cover plate clamping mechanism and welding positioning mechanism of a galvanometer laser welding fixture for a new energy battery cover plate provided in this application;

[0025] Figure 6 This is a schematic diagram of the connecting frame structure of a galvanometer laser welding fixture for a new energy battery cover provided in this application;

[0026] Figure 7 This is a schematic diagram of the positioning ring structure of a galvanometer laser welding fixture for a new energy battery cover provided in this application.

[0027] In the figure: 1. Battery clamping mechanism; 11. First clamping base; 12. Bottom plate; 13. Mounting groove; 14. Connecting column; 15. Side plate; 16. Slide groove; 17. First connecting ring; 18. Roller; 19. Track; 2. Cover 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; 8. Connecting frame; 81. X-link; 82. Electric push rod. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0029] like Figure 1-Figure 7 As shown, this embodiment proposes a galvanometer laser welding fixture for a new energy battery cover, comprising two symmetrically arranged battery clamping mechanisms 1, a lifting push rod 4 movably installed in the middle of the battery clamping mechanism 1, a cover clamping mechanism 2 is arranged above the battery clamping mechanism 1, the battery clamping mechanism 1 and the cover 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 clamping mechanisms 2, the two battery clamping mechanisms 1 clamp and fix the new energy battery 6 in the middle, and the two cover clamping mechanisms 2 clamp and fix the battery cover 7 in the middle, the lifting push rod 4 and the hydraulic push rod 5 drive the cover clamping mechanism 2 to flip and adjust the height, align the battery cover 7 with the new energy battery 6, and the welding positioning mechanism 3 is pressed against the welding point of the battery cover 7 as the laser welds.

[0030] The battery clamping mechanism 1 includes a first clamping base 11, a base plate 12 is fixedly installed at the bottom of the first clamping base 11, a track 19 is installed on the upper part of the inside of the base plate 12, and a roller 18 is installed in the middle of the bottom surface of the base plate 12. The angle between the base plate 12 and the ground is five degrees. The track 19 is installed on the base plate 12, and a slope is set at the front end of the base plate 12 to facilitate the transportation of the battery from the transmission equipment to the inside of the clamp, reducing the difficulty of battery transportation, and the installation of the roller 18 allows the base plate 12 to tilt as the center of gravity of the first clamping base 11 changes, so that the battery can be close to the inside of the first clamping base 11 and positioned.

[0031] A mounting groove 13 is provided on the back of the first clamping base 11, and a connecting column 14 is fixedly installed inside the mounting groove 13. The connecting frame 8 is connected to the connecting column 14. The arrangement of the mounting groove 13 and the connecting column 14 facilitates the installation and storage of the connecting frame 8, adjusts the width between the two battery clamping mechanisms 1, and clamps the battery.

[0032] A slide groove 16 is provided on the outer side of the back side of the first clamping base 11, and a side panel 15 is fixedly installed on the front end of the first clamping base 11. The inner and outer side surfaces of the side panel 15 are inclined five degrees. A first connecting ring 17 is fixedly installed on the upper end of the first clamping base 11, and the bottom end of the hydraulic push rod 5 is hinged on the first connecting ring 17. A lifting push rod 4 is slidably installed on the inner side of the first clamping base 11. The height of the cover clamping mechanism 2 is adjusted by the tightness of the lifting push rod 4. The setting of the side panel 15 enables the battery to slide on the bottom plate 12 for centering adjustment, thereby improving the clamping accuracy of the battery.

[0033] The cover clamping mechanism 2 includes a second clamping base 21, and 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 opened at the upper end of the second clamping base 21, and a plurality of suction cups 26 are installed on the bottom surface of the top plate of the second clamping base 21. A trumpet-shaped guide plate 25 is provided at the front end of the second clamping base 21. The cover 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 folded backward to dock with the blanking device of the cover, the cover 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 7 will be adsorbed and fixed by the suction cups 26. As the second clamping base 21 is flipped, it is aligned with the new energy battery 6, which facilitates the precise welding of the new energy battery 6 and the battery cover 7.

[0034] The welding positioning mechanism 3 includes a positioning ring 31, and cross bars 33 are symmetrically connected to the two 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 top surface of the cover clamping mechanism 2. After the positioning ring 31 is connected to the welding laser, the cross bars 33 on both sides of the positioning ring 31 slide in the through hole 24 facing the translation of the laser, and the laser welding position is pressed by the positioning ring 31 to ensure the flatness of the welding.

[0035] The lifting push rod 4 includes a slide rod 41, the upper end of the slide rod 41 is hinged to the cover clamping mechanism 2, the lower end of the slide 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 slide rod 41. The bolt 42 is rotated to adjust the tightness. The tightness of the bolt 42 controls the slide rod 41 to slide in the slide groove 16, adjust the overall height of the cover clamping mechanism 2, and facilitate the positioning of the battery and the cover.

[0036] The positioning ring 31 is annular, and the bottom surface of the positioning ring 31 is connected to a gasket 32 of the same annular shape. The gasket 32 is a corrugated gasket made of rubber. The gasket 32 is pressed tightly against the upper surface of the cover to avoid scratching the cover.

[0037] The connecting frame 8 includes an X-link 81, the two ends of which 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, adjusts the width between the two battery clamping mechanisms 1 at both ends of the connecting frame 8, and clamps the battery.

[0038] Specifically, when the galvanometer laser welding fixture of the new energy battery cover is in use: a slope is set at the front end of the base plate 12 to transport the battery from the transmission equipment to the inside of the fixture. After the battery passes through the roller 18, the center of gravity of the base plate 12 and the first clamping base 11 changes and tilts backward, so that the battery is close to the inside of the first clamping base 11. The electric push rod 82 tightens the X-link 81, adjusts the width between the two battery clamping mechanisms 1, clamps the battery, and the second clamping base 21 folds backward to dock the cover blanking device. The cover slides from the blanking device to the innermost side of the second clamping base 21, and the suction cup 26 absorbs and fixes the battery cover 7, and the lifting and pushing The tightness of the rod 4 adjusts the height of the cover clamping mechanism 2. As the second clamping base 21 is flipped, the battery cover 7 and the new energy battery 6 are pressed and aligned to perform precise welding of the new energy battery 6 and the battery cover 7. After the positioning ring 31 is connected to the welding laser, the horizontal bars 33 on both sides of the positioning ring 31 slide in the through hole 24 facing the translation of the laser, and the laser welding position is pressed by the positioning ring 31 to improve the welding efficiency and quality of the lithium battery and the cover, ensure the horizontality of the lithium battery cover, and improve the product quality during the lithium battery processing. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0039] The above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications, or equivalent substitutions 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 be encompassed by the scope of the claims of the present invention.

Claims

1. A galvanometer laser welding fixture for a new energy battery cover, comprising two symmetrically arranged battery clamping mechanisms, characterized in that: A lifting push rod is movably installed in the middle of the battery clamping mechanism, and 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 in the middle of the two battery clamping mechanisms, and the battery cover plate is clamped and fixed in the middle of 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 adjust the height to align the battery cover plate with the new energy battery. The welding positioning mechanism is pressed against the welding point of the battery cover plate as the laser welds; The battery clamping mechanism includes a first clamping base, a base plate fixedly mounted on the bottom of the first clamping base, a crawler mounted on the upper interior of the base plate, and a roller mounted on the middle portion of the bottom surface of the base plate. The installation of the roller allows the base plate to tilt as the center of gravity of the first clamping base changes, facilitating the battery to be held tightly against the interior of the first clamping base. The angle between the base plate and the ground is five degrees. A mounting groove is provided on the back of the first clamping base, a connecting column is fixedly installed inside the mounting groove, and the connecting frame is connected to the connecting column; A sliding groove is provided on the outer side of the back side of the first clamping base, a side plate is fixedly mounted on the front end of the first clamping base, the inner side and the outer side of the side plate are inclined at five degrees, a first connecting ring is fixedly mounted on the upper end of the first clamping base, and the bottom end of the hydraulic push rod is hinged to the first connecting ring; 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, and the third connecting ring is hinged to the upper end of the hydraulic push rod. A through hole is opened at the upper end of the second clamping base, and a plurality of suction cups are installed on the bottom surface of the top plate of the second clamping base. A trumpet-shaped guide plate is provided at the front end of the second clamping base. When the second clamping base is folded backward to dock with the blanking device of the cover plate, the cover plate will slide along the second clamping base to the innermost side of the second clamping base, and then the two sides of the battery cover plate will be adsorbed and fixed by the suction cups.

2. The galvanometer laser welding fixture for a new energy battery cover according to claim 1 is characterized in that: The welding positioning mechanism includes a positioning ring, both ends of the positioning ring are symmetrically connected with cross bars, the ends of the cross bars are connected with connecting blocks, and a spring is connected between the connecting block and the top surface of the cover plate clamping mechanism.

3. The galvanometer laser welding fixture for a new energy battery cover according to claim 1 is characterized in that: The lifting push rod includes a sliding rod, the upper end of the sliding rod is hinged to the cover 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 is rotated to adjust the tightness.

4. The galvanometer laser welding fixture for a new energy battery cover according to claim 2, characterized in that: The positioning ring is in the shape of a circular ring, and the bottom surface of the positioning ring is connected to a gasket in the shape of a circular ring. The gasket is a corrugated gasket made of rubber.

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

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