Chip laser welding device compatible with cylindrical and square shell battery cell modules

Abstract

The utility model relates to a chip laser welding device compatible with a cylindrical and square shell battery cell module. The chip laser welding device comprises laser welding equipment and a laser arranged on a laser placing frame, the laser welding equipment comprises a laser welding table, and a laser welding mechanism, a turnover mechanism, an X-axis conveying line and a Y-axis conveying line are installed on the laser welding table. The laser welding machine is compatible with square shell battery cell module and cylindrical battery cell module sheet laser welding and compatible with cylindrical battery cell module front and back sheet laser welding, the production efficiency is greatly improved, the equipment cost is reduced, and the competitiveness of the laser welding technology in the new energy industry is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of battery cell module processing, and in particular to a laser welding device for battery cell modules compatible with cylindrical and prismatic shells. Background Technology

[0002] With the rapid development of the new energy industry in recent years, laser welding technology has been widely applied. Traditional welding techniques, such as resistance welding and arc welding, suffer from problems such as unstable weld quality, large heat-affected zones, and insufficient weld strength. As the new energy industry continues to demand higher performance and safety from battery modules, laser welding, with its significant advantages such as concentrated energy, high welding speed, narrow weld seams, small heat-affected zones, minimal welding deformation, and high weld strength, has gradually become the mainstream technology for welding new energy battery modules. Laser welding can achieve high-precision, high-quality welding, effectively improving the sealing performance and electrical connection reliability of battery modules, reducing internal resistance, and increasing battery energy density and lifespan.

[0003] In summary, the problems with the existing technology are as follows:

[0004] Existing laser welding equipment has limited functionality, only capable of welding either prismatic or cylindrical battery cell modules. It cannot be compatible with both types of modules, hindering the development of laser welding technology in the new energy industry and increasing equipment costs for companies.

[0005] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a laser welding device for both cylindrical and prismatic battery cell modules, making it more industrially valuable. Utility Model Content

[0006] To solve any of the above-mentioned technical problems, the purpose of this utility model is to provide a laser welding device for composite cells compatible with cylindrical and prismatic battery cell modules.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A laser welding apparatus for compatible cylindrical and prismatic battery cell modules, including laser welding equipment and a laser mounted on a laser mounting rack;

[0009] Laser welding equipment includes a laser welding table, on which a laser welding mechanism, a flipping mechanism, an X-axis conveyor line, and a Y-axis conveyor line are installed;

[0010] The X-axis conveyor line is located on the laser welding table below the laser welding mechanism. The X-axis conveyor line drives the X-axis tray to move in the X-axis direction. The X-axis tray is used to carry the square-shell battery cells.

[0011] The flipping mechanism is located on the laser welding platform along the negative Y-axis of the laser welding mechanism. The Y-axis conveyor line is located on the laser welding platform below the flipping mechanism. The Y-axis conveyor line drives the Y-axis tray to move in the Y-axis direction. The Y-axis tray is used to carry the cylindrical battery cells.

[0012] As a further improvement of this utility model, an explosion-proof dust collector and a water cooler are also installed on one side of the laser.

[0013] As a further improvement of this utility model, a welding equipment cover is installed on the outside of the laser welding table, and a grating and a start button are installed on the laser welding table outside the flipping mechanism.

[0014] As a further improvement of this utility model, the laser welding mechanism includes a Y-axis linear motion module mounted on the laser welding table via a column. The Y-axis linear motion module drives the inner X-axis linear motion module to move in the Y-axis direction, the X-axis linear motion module drives the Z-axis linear motion module to move in the X-axis direction, and the Z-axis linear motion module drives the laser processing component to move in the Z-axis direction.

[0015] As a further improvement of this utility model, the laser processing component includes a galvanometer assembly, a ranging sensor, and a CCD vision assembly.

[0016] As a further improvement of this utility model, the laser processing assembly also includes an air knife assembly and a dust collection device.

[0017] As a further improvement of this utility model, the laser processing assembly also includes a clamping mechanism.

[0018] As a further improvement of this utility model, the flipping mechanism includes a lower mounting plate and an upper mounting plate. An upper mounting plate is provided above both sides of the lower mounting plate. The lower mounting plate is connected to the upper mounting plate via a lead screw assembly. A lifting servo motor installed in the middle of the lower mounting plate drives the upper mounting plate to move in the Z-axis direction via a belt drive assembly and a lead screw assembly. A flipping cylinder is installed on the outer side of the upper mounting plate. The flipping cylinder drives the inner clamping cylinder to flip. The two sides of the clamping cylinder are connected to the inner clamping fixture plate via grippers to achieve clamping of the cylindrical battery cell.

[0019] As a further improvement of this utility model, guide shafts are installed at the bottom of the upper mounting plates on both sides of the lead screw assembly, and the guide shafts are connected to the bearing seats mounted on the lower mounting plate directly below.

[0020] By means of the above solution, this utility model has at least the following advantages:

[0021] This utility model is compatible with laser welding of square-shell and cylindrical cell modules, and also compatible with laser welding of the front and back sides of cylindrical cell modules. This greatly improves production efficiency, reduces equipment costs, and enhances the competitiveness of laser welding technology in the new energy industry.

[0022] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a laser welding device for composite cell modules compatible with cylindrical and square shells according to this utility model;

[0025] Figure 2 yes Figure 1 A schematic diagram of the structure of a laser welding equipment;

[0026] Figure 3 yes Figure 2 Internal structure diagram;

[0027] Figure 4 yes Figure 3 A structural diagram of the other side;

[0028] Figure 5 yes Figure 3 Schematic diagram of the laser welding mechanism;

[0029] Figure 6 yes Figure 3 A schematic diagram of the structure of the tilting mechanism;

[0030] Figure 7 This is a structural schematic diagram of the square-shell battery cell applied to this utility model;

[0031] Figure 8 This is a schematic diagram of the cylindrical battery cell used in this utility model.

[0032] The meanings of the labels in the figures are as follows.

[0033] Laser welding equipment 1. Laser 2. Explosion-proof dust collector 3. Water chiller 4. Laser placement rack 5. Welding equipment cover 6. Laser welding mechanism 7. Tilting mechanism 8. Grating 9. Start button 10. Laser welding table 11. X-axis conveyor line 12. X-axis tray 13. Square battery cell 14. Y-axis conveyor line 15. Y-axis tray 16. Cylindrical battery cell 17. Column 18. Y-axis linear motion module 19. X-axis linear motion module 20. Z-axis linear motion module 21. Galvanometer assembly 22. Distance sensor 23. CCD vision assembly 24. Air knife assembly 25. Dust collection device 26. Pressing mechanism 27. Lower mounting plate 28. Lifting servo motor 29. Lead screw assembly 30. Upper mounting plate 31. Guide shaft 32. Bearing seat 33. Tilting cylinder 34. Clamping cylinder 35. Gripper 36. Clamping fixture plate 37. Bar plate 38. Detailed Implementation

[0034] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] like Figures 1 to 8 As shown, a laser welding device for compatible cylindrical and prismatic battery cell modules includes a laser welding apparatus 1 and a laser 2 mounted on a laser placement rack 5. The laser welding apparatus 1 includes a laser welding table 11, on which a laser welding mechanism 7, a flipping mechanism 8, an X-axis conveyor line 12, and a Y-axis conveyor line 15 are mounted.

[0037] The X-axis conveyor line 12 is located on the laser welding table 11 below the laser welding mechanism 7. The X-axis conveyor line 12 drives the X-axis tray 13 to move in the X-axis direction. The X-axis tray 13 is used to carry the square-shell battery cell 14.

[0038] The flipping mechanism 8 is located on the laser welding table 11 on the side of the laser welding mechanism 7 along the negative Y-axis. The Y-axis conveyor line 15 is located on the laser welding table 11 below the flipping mechanism 8. The Y-axis conveyor line 15 drives the Y-axis tray 16 to move in the Y-axis direction. The Y-axis tray 16 is used to carry the cylindrical battery cell 17.

[0039] An explosion-proof dust collector 3 and a water chiller 4 are also installed on one side of the laser 2. A welding equipment cover 6 is installed on the outside of the laser welding table 11, and a grating 9 and a start button 10 are installed on the laser welding table 11 outside the flipping mechanism 8.

[0040] The laser welding mechanism 7 includes a Y-axis linear motion module 19 mounted on the laser welding table 11 via a column 18. The Y-axis linear motion module 19 drives the inner X-axis linear motion module 20 to move in the Y-axis direction. The X-axis linear motion module 20 drives the Z-axis linear motion module 21 to move in the X-axis direction. The Z-axis linear motion module 21 drives the laser processing component to move in the Z-axis direction.

[0041] The laser processing assembly includes a galvanometer assembly 22, a range sensor 23, a CCD vision assembly 24, an air knife assembly 25, a dust extraction device 26, and a clamping mechanism 27. All of the above-mentioned structural components are commonly used in this field, and their functions and models will not be elaborated upon here.

[0042] The flipping mechanism 8 includes a lower mounting plate 28 and an upper mounting plate 31. The upper mounting plate 31 is provided above both sides of the lower mounting plate 28. The lower mounting plate 28 is connected to the upper mounting plate 31 via a lead screw assembly 30. The lifting servo motor 29, which is installed in the middle of the lower mounting plate 28, drives the upper mounting plate 31 to move in the Z-axis direction via a belt drive assembly and a lead screw assembly 30. A flipping cylinder 34 is installed on the outer side of the upper mounting plate 31. The flipping cylinder 34 drives the inner clamping cylinder 35 to flip. The two sides of the clamping cylinder 35 are connected to the inner clamping fixture plate 37 via grippers 36 to clamp the cylindrical battery cell 17.

[0043] Guide shafts 32 are installed at the bottom of the upper mounting plates 31 on both sides of the lead screw assembly 30. The guide shafts 32 are connected to the bearing seats 33 installed on the lower mounting plate 28 directly below.

[0044] The first embodiment of this utility model:

[0045] This utility model provides a laser welding device that is compatible with the automatic welding of two types of batteries: square-shell battery modules and cylindrical battery modules with side-mounted welding plates. This significantly improves production efficiency, reduces equipment costs, and enhances the competitiveness of laser welding technology in the new energy industry. Square-shell and cylindrical battery modules are two different types of products requiring laser welding. The device is compatible with the automatic welding of both sides of cylindrical battery modules. The process requirements for square and cylindrical battery modules differ greatly. Cylindrical battery modules have welding plates 38 (CCS) on both the top and bottom sides. After installing one side of the welding plate 38, the module enters the equipment for laser welding before installing the other side and performing laser welding on the other side.

[0046] In laser welding Figure 7 The square-shell battery cell 14 shown and Figure 8 When the cylindrical battery cell 17 is shown, the battery cell module is placed on a tray and transported to the designated position via a double-speed chain conveyor. The laser 2 provides the laser source, and under the guidance of the ranging sensor 23 and the CCD vision component 24, the galvanometer component 22 is moved by the Y-axis linear motion module 19, the X-axis linear motion module 20, and the Z-axis linear motion module 21. After reaching the position, the clamping mechanism 27 clamps the bar plate 38, and the air knife component 25 blows air to perform laser welding.

[0047] When welding the square-shell battery cell 14, the cylindrical battery cell 17 is in the rising position, and the square-shell battery cell 14 is placed on the X-axis tray 13 and transported to the designated position via the X-axis conveyor line 12. The laser 2 provides the laser source. Guided by the ranging sensor 23 and the CCD vision component 24, the galvanometer assembly 22 is moved by the Y-axis linear motion module 19, the X-axis linear motion module 20, and the Z-axis linear motion module 21. Upon reaching the designated position, the clamping mechanism 27 clamps the bar plate 38, and the air knife assembly 25 blows air to perform laser welding. During this process, the flipping mechanism 8 does not participate in the welding.

[0048] When welding the cylindrical battery cell 17, the cylindrical battery cell 17 is in the rising position and placed on the Y-axis tray 16. It is then transported to the designated position via the Y-axis conveyor line 15. The laser 2 provides the laser source. Guided by the ranging sensor 23 and the CCD vision component 24, the galvanometer component 22 is moved by the Y-axis linear motion module 19, the X-axis linear motion module 20, and the Z-axis linear motion module 21. After reaching the position, the clamping mechanism 27 clamps the bar plate 38, and the air knife component 25 blows air to perform laser welding on one side of the cylindrical battery cell 17.

[0049] After laser welding on one side is completed, the clamping cylinder 35 is released, the cylindrical battery cell 17 descends, the cylindrical battery cell 17 is clamped and then rises, and the cylindrical battery cell 17 is flipped under the action of the flipping cylinder 34. After flipping 180° to the position, the cylindrical battery cell 17 descends and is placed on the Y-axis tray 16. Under the action of the Y-axis conveyor line 15, the module is moved out, and the bar plate 38 on the other side of the cylindrical battery cell 17 is manually installed for laser welding.

[0050] Once the welding on the other side of the cylindrical cell module is completed, the welding of both poles and plates of the entire cylindrical cell module is finished, and the tray moves the module out of the welding station.

[0051] In the X-axis direction of this article, that is... Figure 3 The left and right directions shown are, in this article, the Y-axis direction. Figure 3 The front-back direction shown in this paper corresponds to the Z-axis direction. Figure 3 The vertical direction shown.

[0052] Furthermore, the solution of this utility model is not only applicable to laser welding, but also to processing technologies such as CCS welding.

[0053] This utility model is compatible with laser welding of square-shell and cylindrical cell modules, and also compatible with laser welding of the front and back sides of cylindrical cell modules. This greatly improves production efficiency, reduces equipment costs, and enhances the competitiveness of laser welding technology in the new energy industry.

[0054] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0055] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A laser welding apparatus for cylindrical and prismatic battery cell modules, comprising a laser welding device (1) and a laser (2) mounted on a laser mounting frame (5); characterized in that: The laser welding equipment (1) includes a laser welding table (11), on which a laser welding mechanism (7), a flipping mechanism (8), an X-axis conveyor line (12) and a Y-axis conveyor line (15) are installed; The X-axis conveyor line (12) is located on the laser welding table (11) below the laser welding mechanism (7). The X-axis conveyor line (12) drives the X-axis tray (13) to move in the X-axis direction. The X-axis tray (13) is used to carry the square-shell battery cell (14). The flipping mechanism (8) is located on the laser welding table (11) on the side of the laser welding mechanism (7) along the negative Y-axis. The Y-axis conveying line (15) is located on the laser welding table (11) below the flipping mechanism (8). The Y-axis conveying line (15) drives the Y-axis tray (16) to move in the Y-axis direction. The Y-axis tray (16) is used to carry the cylindrical battery cell (17).

2. The laser welding device for compatible cylindrical and prismatic battery cell modules as described in claim 1, characterized in that, An explosion-proof dust collector (3) and a water chiller (4) are also installed on one side of the laser (2).

3. The laser welding device for compatible cylindrical and prismatic battery cell modules as described in claim 1, characterized in that, A welding equipment cover (6) is installed on the outside of the laser welding table (11), and a grating (9) and a start button (10) are installed on the laser welding table (11) outside the flipping mechanism (8).

4. The laser welding apparatus for compatible cylindrical and prismatic battery cell modules as described in claim 1, characterized in that, The laser welding mechanism (7) includes a Y-axis linear motion module (19) mounted on a laser welding table (11) via a column (18). The Y-axis linear motion module (19) drives the inner X-axis linear motion module (20) to move in the Y-axis direction. The X-axis linear motion module (20) drives the Z-axis linear motion module (21) to move in the X-axis direction. The Z-axis linear motion module (21) drives the laser processing component to move in the Z-axis direction.

5. The laser welding apparatus for compatible cylindrical and prismatic battery cell modules as described in claim 4, characterized in that, The laser processing assembly includes a galvanometer assembly (22), a range sensor (23), and a CCD vision assembly (24).

6. The laser welding apparatus for compatible cylindrical and prismatic battery cell modules as described in claim 5, characterized in that, The laser processing assembly also includes an air knife assembly (25) and a dust collection device (26).

7. The laser welding apparatus for compatible cylindrical and prismatic battery cell modules as described in claim 5, characterized in that, The laser processing assembly also includes a clamping mechanism (27).

8. The laser welding apparatus for compatible cylindrical and prismatic battery cell modules as described in claim 1, characterized in that, The flipping mechanism (8) includes a lower mounting plate (28) and an upper mounting plate (31). The upper mounting plate (31) is provided on both sides of the lower mounting plate (28). The lower mounting plate (28) is connected to the upper mounting plate (31) via a lead screw assembly (30). The lifting servo motor (29) installed in the middle of the lower mounting plate (28) drives the upper mounting plate (31) to move in the Z-axis direction via a belt drive assembly and a lead screw assembly (30). A flipping cylinder (34) is installed on the outer side of the upper mounting plate (31). The flipping cylinder (34) drives the inner clamping cylinder (35) to flip. The two sides of the clamping cylinder (35) are connected to the inner clamping fixture plate (37) via grippers (36) to clamp the cylindrical battery cell (17).

9. The laser welding apparatus for compatible cylindrical and prismatic battery cell modules as described in claim 8, characterized in that, Guide shafts (32) are installed at the bottom of the upper mounting plates (31) on both sides of the lead screw assembly (30), and the guide shafts (32) are connected to the bearing seats (33) mounted on the lower mounting plate (28) directly below.

Images