Cylindrical battery compatible welding tooling

Abstract

The present invention proposes a cylindrical battery compatibility welding tool to solve the problems that existing welding tools are not universal for different module designs, have high production costs, are inconvenient to use, and cannot meet various usage requirements. The present invention includes a carrier and a cover plate, the carrier is provided with a receiving groove, and welding holes are correspondingly opened on the carrier and the cover plate. The two ends of the battery module are respectively fixed by a clamping module, and the clamping module is provided with a bus bar. The welding points of the bus bar correspond one-to-one with the battery module and the welding holes respectively. Positioning devices are provided in the receiving groove and on the cover plate. The present invention can ensure that the bus bar and the battery module will not shake or be misplaced during transportation or welding, and can realize mechanical automatic welding to improve production efficiency. It can be universal for different module designs and meet the use requirements of modules with different numbers of battery cells and different structures. It has a simple structure, is easy to use, and has strong practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle battery assembly processing, and in particular to a cylindrical battery compatibility welding tool. Background Art

[0002] With the increasing application of lithium batteries, especially in various electric vehicles, demand is enormous. To meet this surging demand, the production of lithium battery packs is now fully mechanized and automated. A crucial step in the manufacturing process is the group welding of modules. Automated welding machines require the use of welding fixtures for module welding. However, existing welding fixtures are specifically designed for a specific product and can only be used to produce battery packs of a single design, specifically welding a fixed number of cells in groups. This structure presents significant drawbacks, as different module designs are not interchangeable. Each new battery module design and development requires one or more sets of welding fixtures for module welding, resulting in high production costs, inconvenience, and an inability to meet diverse application requirements. Summary of the Invention

[0003] In response to the problems that existing welding tooling is not universal for different module designs, has high production costs, is inconvenient to use, and cannot meet various usage requirements, the present invention proposes a cylindrical battery compatibility welding tool that can be universal for different module designs and can position different numbers of batteries to meet the usage requirements of different numbers of battery cells and different structural modules.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a cylindrical battery compatibility welding tool, including a carrier and a cover plate, the carrier and the cover plate are movably connected by a locking mechanism, the carrier is provided with a receiving groove for placing the battery module, and the carrier and the cover plate are respectively provided with welding holes, the battery modules correspond one-to-one to the welding holes, and the two ends of the battery modules are respectively fixed by a clamping module, the clamping module is provided with a bus, the welding points of the bus correspond one-to-one to the battery modules and the welding holes, and positioning devices for fixing the battery modules and the bus are provided in the receiving groove and on the cover plate.

[0005] The battery module includes a cylindrical battery core, which is fixed by a clamping module and placed in the accommodating groove, and the two ends of the cylindrical battery core correspond to the welding holes one by one.

[0006] The clamping module includes an upper clamping mold and a lower clamping mold, and the upper clamping mold is arranged at the positive end of the cylindrical battery cell, and the lower clamping mold is arranged at the negative end of the cylindrical battery cell. The upper clamping mold and the lower clamping mold are respectively provided with a through hole I that matches the cylindrical battery cell, and the two ends of the cylindrical battery cell are respectively arranged in the through hole I and contact the welding point of the busbar.

[0007] The busbar includes a positive busbar and a negative busbar, and the positive busbar is arranged on the outside of the upper clamping mold, and the negative busbar is arranged on the outside of the lower clamping mold. The positive end of the cylindrical battery cell matches the positive busbar, and the negative end matches the negative busbar.

[0008] The positioning device includes several positioning pins for fixing the battery module, and the positioning pins are respectively arranged in the accommodating groove and on the lower end surface of the cover plate. The upper clamping mold and the lower clamping mold are both provided with positioning holes matching the positioning pins. The positive bus and the negative bus are provided with a through hole II, and the positioning pins pass through the through hole II and cooperate with the positioning holes.

[0009] Magnets for magnetically fixing the busbars are provided on the lower end surface of the cover plate and in the receiving groove. The positive busbar is fixed to the lower end surface of the cover plate by the magnet, and the negative busbar is fixed to the bottom of the receiving groove by the magnet.

[0010] The locking mechanism includes a quick-release lock buckle I and a quick-release lock buckle II, and both the quick-release lock buckle I and the quick-release lock buckle II are fixed on the carrier. A lock sleeve I matching the quick-release lock buckle I and a lock sleeve II matching the quick-release lock buckle II are fixedly provided on the cover plate.

[0011] The present invention adopts the above structure, and the cover plate is tightly covered on the carrier through the locking mechanism, and the battery module and the bus are fixed by the positioning device, which can ensure that the bus and the battery module will not shake or be misplaced during transportation or welding. At the same time, mechanical automatic welding can be realized, which reduces labor costs and greatly improves production efficiency. It can be universal for different module designs and can position different numbers of batteries to meet the use requirements of different numbers of battery cells and modules with different structures. It has a simple structure, reasonable design, and is easy to use, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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.

[0013] Figure 1 Schematic diagram of the external structure of the present invention;

[0014] Figure 2 is a structural diagram of the carrier of the present invention;

[0015] Figure 3 It is an exploded view of the internal structure of the present invention.

[0016] In the figure, 1 is a carrier, 2 is a cover, 3 is a receiving groove, 4 is a welding hole, 5 is a cylindrical battery cell, 6 is an upper clamping mold, 7 is a lower clamping mold, 8 is a positive bus bar, 9 is a negative bus bar, 10 is a positioning pin, 11 is a positioning hole, 12 is a perforation I, 13 is a perforation II, 14 is a quick-release lock buckle I, 15 is a lock sleeve I, 16 is a quick-release lock buckle II, 17 is a lock sleeve II, 20 is a magnet, and 21 is a mounting slot. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0018] like Figure 1 As shown, the present invention provides a cylindrical battery compatible welding tool, including a carrier 1 and a cover plate 2, the carrier 1 is used to place the battery module, and then the cover plate 2 is tightly covered on the carrier 1. Figure 2 As shown, the carrier 1 is provided with a receiving groove 3 for placing the battery module, that is, when in use, the battery module is placed in the receiving groove 3 for fixation; welding holes 4 are correspondingly opened on the carrier 1 and the cover plate 2, and the welding holes 4 are used to insert welding pins; the battery modules correspond to the welding holes 4 one by one, that is, each battery cell in the battery module corresponds to a welding hole 4, which facilitates the welding pin to pass through the welding hole 4 to weld it. The two ends of the battery module are respectively fixed by a clamping module to prevent the battery module from moving during welding and affecting the welding quality; and a bus is provided on the clamping module, and the welding points of the bus correspond one-to-one with the battery module and the welding hole 4 respectively. Specifically, the two ends of the battery module are fixed in the clamping module, and the bus is arranged on the outside of the clamping module. When installing the bus, ensure that the welding points of the bus correspond to the two ends of the battery module respectively. Finally, the battery module with the bus installed is placed in the accommodating groove 3, and when placed, the welding points of the battery module and the bus correspond to the welding hole 4, so that the welding needle is inserted from the welding hole 4 and the battery module and the bus are welded.

[0019] Specifically, if Figure 3As shown, the battery module includes a cylindrical battery cell 5, which is fixed by a clamping die module and placed in a receiving groove 3. The two ends of the cylindrical battery cell 5 correspond to the welding holes 4 one by one, that is, the positive and negative poles of the cylindrical battery cell 5 correspond to a welding hole 4 respectively, which makes it convenient for the welding needle to pass through the welding hole 4 to weld the cylindrical battery cell 5, thereby improving the quality of the weld. The clamping die module includes an upper clamping die 6 and a lower clamping die 7, and the upper clamping die 6 is arranged at the positive end of the cylindrical battery cell 5, and the lower clamping die 7 is arranged at the negative end of the cylindrical battery cell 5. The upper clamping die 6 and the lower clamping die 7 are respectively provided with a through hole Ⅰ12 that matches the cylindrical battery cell 5, that is, the two ends of the cylindrical battery cell 5 are respectively arranged in the through hole Ⅰ12 and exposed to contact with the welding point of the busbar. Specifically, the busbar includes a positive busbar 8 and a negative busbar 9, and the positive busbar The positive electrode bus 8 is arranged on the outside of the upper clamping die 6, and the negative electrode bus 9 is arranged on the outside of the lower clamping die 7. The positive terminal of the cylindrical battery cell 5 matches the positive electrode bus 8, and the negative terminal matches the negative electrode bus 9. That is, the positive terminal of the cylindrical battery cell 5 passes through the perforation I 12 in the upper clamping die 6 and contacts the welding point of the positive electrode bus 8, and the negative terminal of the cylindrical battery cell 5 passes through the perforation I 12 in the lower clamping die 7 and contacts the welding point of the negative electrode bus 9, thereby facilitating welding. In this embodiment, the specifications of the welding hole 4, battery module, clamping die, and bus are all 10*9. This specification can also be changed according to actual use requirements to meet different usage requirements. The structural design is simple and reasonable, and it is easy to use.

[0020] In order to ensure that the busbar and the battery module will not shake or shift in position during transportation or welding, a positioning device for fixing the battery module and the busbar is provided in the receiving groove 3 and on the cover plate 2. The positioning device includes a plurality of positioning pins 10 for fixing the battery module, and the positioning pins 10 are respectively provided in the receiving groove 3 and on the lower end surface of the cover plate 2. The upper clamping die 6 and the lower clamping die 7 are both provided with positioning holes 11 that match the positioning pins 10. The positive busbar 8 and the negative busbar 9 are provided with perforations II 13. The positioning pins 10 pass through the perforations II 13 and cooperate with the positioning holes 11. That is, when in use, the two ends of the battery module are respectively fixed in the upper clamping die 6 and the lower clamping die 7, and then the positioning pins 10 are used to cooperate with the positioning holes 11, thereby further reinforcing the battery module to prevent the battery module from shaking or shifting in position during transportation or welding. At the same time, mechanical automatic welding can be realized, reducing labor costs and greatly improving production efficiency. As a further preferred embodiment, magnets 20 are provided on the lower end surface of the cover plate 2 and within the receiving slot 3 for magnetically securing the busbars. The busbars are nickel sheets, so magnets 20 exert a certain magnetic attraction on them. Specifically, the positive busbar 8 is secured to the lower end surface of the cover plate 2 via magnets 20, while the negative busbar 9 is secured to the bottom of the receiving slot 3 via magnets 20, serving to attract and secure the busbars. Any number of magnets 20 may be employed, as long as the busbars are secured. The mounting positions of magnets 20 can also be adjusted based on specific usage requirements to meet a variety of needs.

[0021] The carrier 1 and the cover plate 2 are movably connected via a locking mechanism. Specifically, the locking mechanism includes a quick-release lock buckle I 14 and a quick-release lock buckle II 16, and both the quick-release lock buckle I 14 and the quick-release lock buckle II 16 are fixed to the carrier 1. The cover plate 2 is fixedly provided with a lock sleeve I 15 that matches the quick-release lock buckle I 14 and a lock sleeve II 17 that matches the quick-release lock buckle II 16. Specifically, there are two quick-release lock buckles I 14 and both are provided on the upper part of the carrier 1. There are also two quick-release lock buckles II 16 and they are respectively fixed on both sides of the carrier 1. The lock sleeve I 15 corresponds to the quick-release lock buckle I 14 and is fixed to the upper part of the cover plate 2. The lock sleeve II 17 corresponds to the quick-release lock buckle II 16 and is fixed on both sides of the cover plate 2, wherein the upper part of the carrier 1 and the cover plate 2 are provided with two mounting grooves 21 for installing the quick-release lock buckle I 14 and the clamping sleeve II 15. When in use, the quick-release lock buckle I 14 is fixed in the lock sleeve I 15 and the quick-release lock buckle II 16 is fixed in the lock sleeve II 17, so that the cover plate 2 is tightly covered on the carrier 1, and ensures that the connection between the carrier 1 and the cover plate 2 is more stable and firm, preventing the cover plate 2 from moving relative to the carrier 1 or falling off from the carrier 1 during transportation or welding, thereby affecting the working process.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cylindrical battery compatible welding tool, characterized by: The invention comprises a carrier (1) and a cover plate (2), wherein the carrier (1) and the cover plate (2) are movably connected via a locking mechanism, the carrier (1) is provided with a receiving groove (3) for accommodating a battery module, the carrier (1) and the cover plate (2) are both provided with corresponding welding holes (4), the battery modules correspond to the welding holes (4) one-to-one, and both ends of the battery modules are fixed by clamping modules, the clamping modules are provided with a bus, and the welding points of the bus correspond to the battery modules and the welding holes (4) one-to-one, respectively, and positioning devices for fixing the battery modules and the bus are both provided in the receiving groove (3) and on the cover plate (2); The clamping die assembly comprises an upper clamping die (6) and a lower clamping die (7), wherein the upper clamping die (6) is arranged at the positive terminal of the cylindrical battery core (5), and the lower clamping die (7) is arranged at the negative terminal of the cylindrical battery core (5), and the upper clamping die (6) and the lower clamping die (7) are respectively provided with a perforation I (12) matching the cylindrical battery core (5), and the two ends of the cylindrical battery core (5) are respectively arranged in the perforation I (12) and in contact with the welding point of the busbar; The positioning device includes a plurality of positioning pins (10) for fixing the battery module, and the positioning pins (10) are respectively arranged in the accommodating groove (3) and on the lower end surface of the cover plate (2), and the upper clamping die (6) and the lower clamping die (7) are both provided with positioning holes (11) matching the positioning pins (10), and the positive busbar (8) and the negative busbar (9) of the busbar are provided with perforations II (13), and the positioning pins (10) pass through the perforations II (13) and match with the positioning holes (11); Magnets (20) for magnetically attracting and fixing the busbar are provided on the lower end surface of the cover plate (2) and in the receiving groove (3); The two ends of the battery module are fixed in the card module, the bus is arranged on the outside of the card module, and when the bus is installed, it is ensured that the welding points of the bus correspond to the two ends of the battery module respectively. Finally, the battery module with the bus installed is placed in the receiving groove (3), and when placed, the welding points of the battery module and the bus are made to correspond to the welding holes (4), so that the welding needle can be inserted from the welding hole (4) and the battery module and the bus are welded; The busbars include a positive busbar (8) and a negative busbar (9), and the positive busbar (8) is arranged on the outside of the upper clamping die (6), and the negative busbar (9) is arranged on the outside of the lower clamping die (7), and the positive terminal of the cylindrical battery cell (5) matches the positive busbar (8), and the negative terminal matches the negative busbar (9); The positive busbar (8) is fixed to the lower end surface of the cover plate (2) via a magnet (20), and the negative busbar (9) is fixed to the bottom of the receiving tank (3) via a magnet (20); The specifications of the welding hole (4), the battery module, the card module and the bus are all 10*9.

2. The cylindrical battery compatible welding tool according to claim 1, characterized in that: The battery module comprises a cylindrical battery core (5), which is fixed by a clamping module and then placed in the accommodating groove (3), and the two ends of the cylindrical battery core (5) correspond to the welding holes (4) one by one.

3. The cylindrical battery compatible welding tool according to claim 1 or 2, characterized in that: The locking mechanism comprises a quick-release lock buckle I (14) and a quick-release lock buckle II (16), and both the quick-release lock buckle I (14) and the quick-release lock buckle II (16) are fixed on the carrier (1), and a lock sleeve I (15) matching the quick-release lock buckle I (14) and a lock sleeve II (17) matching the quick-release lock buckle II (16) are fixedly provided on the cover plate (2).

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