Soft package battery module welding equipment

Abstract

The utility model discloses soft package battery module welding equipment which comprises a base rack, a welding clamp unit and a laser galvanometer three-axis movement unit, the welding clamp unit and the laser galvanometer three-axis movement unit are arranged on the base rack, and the welding clamp unit is provided with a conveying roller assembly, a first three-axis movement assembly, a jacking rotating assembly and a first stand column. A single-side tab battery module or a double-side tab battery module needing to be welded is loaded on the tray assembly, and the jacking rotating assembly comprises a first large plate, a second large plate, a first connecting piece, a first mounting plate, a linear bearing, a guide column, a second mounting plate, a rotating driving piece and a jacking driving piece. According to the automatic welding machine, the three-axis pressing head assembly automatically focuses to achieve chip pressing in sequence, the three-axis galvanometer assembly automatically focuses to achieve automatic welding in sequence, and manual point location is saved.

Description

Technical Field

[0001] The utility model relates to the field of soft-pack battery welding, in particular to a soft-pack battery module welding device. Background Art

[0002] At present, there are three types of battery packaging: cylindrical, square and soft pack. However, soft pack batteries do not have a solid metal shell and cannot be directly assembled into modules. It is often necessary to first stack multiple soft pack batteries and components such as insulation foam, cooling plates and frame shells to assemble them into sub-modules, and the tabs of two soft pack batteries are connected in parallel across the pole pieces. Then, a laser welding machine is used to weld the tabs of the soft pack battery to the pole piece. In order to ensure the quality of laser welding, the tabs and pole pieces of the soft pack battery must fit tightly.

[0003] The existing welding equipment on the market generally adopts a three-axis gantry layout design. Affected by the product compatibility range, parts processing accuracy, assembly accuracy, etc., the welding efficiency is low, the accuracy is poor, and the size and welding effect are difficult to guarantee, which affects the production efficiency and welding strength. There are also problems such as low overall machine efficiency and low stability.

[0004] Based on this, the utility model proposes a soft-pack battery module welding device, which has a reasonable structural design, further improves production efficiency, and reduces unnecessary manpower; secondly, the use of such a welding method improves welding quality and welding stability. Utility Model Content

[0005] The purpose of the utility model is to provide a soft-pack battery module welding device to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a soft-pack battery module welding device, comprising a base frame and a welding fixture unit and a laser galvanometer three-axis motion unit arranged on the base frame, wherein the welding fixture unit has a conveying roller assembly, a three-axis motion assembly 1, a lifting and rotating assembly and a column 1, and the tray assembly is loaded with a single-sided tab battery module or a double-sided tab battery module to be welded, and the lifting and rotating assembly comprises a large plate 1, a large plate 2, a connecting piece 1, a mounting plate 1, a linear bearing, a guide column, a mounting plate 2, a rotating driving piece, and a lifting driving piece; the column 1 is provided with four and they are all installed on the base frame, and a large plate 1 and a large plate 2 are respectively installed above every two of the columns 1, and the large plate 1 and the large plate 2 are respectively locked with a matching connecting piece 1; the connecting piece 1 is locked with the mounting plate 1, a lifting driving piece is installed below the mounting plate 1, a linear bearing is installed on the mounting plate 1, and a guide column is installed in the linear bearing; the mounting plate 2 is installed on the guide column, and the rotating driving piece is installed on the mounting plate 2.

[0007] Preferably, the conveying roller assembly is installed on the large plate one and the large plate two, and a pallet assembly is arranged on the conveying roller assembly. The conveying roller assembly can drive the pallet assembly to move to the welding area, and the pallet assembly can be lifted and fixed by the lifting and rotating assembly after being in place in the welding area.

[0008] Preferably, a pressure head assembly is installed at the bottom of the three-axis motion component, and the three-axis motion component one has a fixed plate one, a side plate, a top plate, an X-axis motion module, a Z-axis mounting plate, a Z-axis driving component, and a Y-axis driving component, wherein the fixed plate one is installed above the large plate one and the large plate two, the fixed plate one is installed with a side plate, the side plate is installed with a top plate, and the top plate is installed with the X-axis motion module; the X-axis motion module is installed with a Z-axis mounting plate, the Z-axis driving component is installed on the Z-axis mounting plate, the Y-axis driving component is installed on the Z-axis driving component, and the Y-axis driving component is installed with a tab pressing nozzle, and the three-axis motion component one can drive the tab pressing nozzle to press the battery cell tab after the lifting and rotating assembly lifts and fixes the product.

[0009] Preferably, the laser galvanometer three-axis motion unit has a second column, a crossbeam, a second three-axis motion component, a laser galvanometer system, a CCD camera component and a distance measurement component, wherein two columns are provided and are mounted on the base frame, the two columns are mounted with crossbeams, and the second three-axis motion component is mounted on the crossbeam, and the second three-axis motion component is mounted with a laser galvanometer system, a CCD camera component and a distance measurement component. After the pressure head assembly presses the cell tabs, the CCD camera component takes a photo to locate the battery module to be welded, that is, the position of the cell tabs on a single-sided tab battery module or a double-sided tab battery module, the second three-axis motion component () drives the laser galvanometer system to move to the welding position, and then the distance measurement component detects the distance between the galvanometer and the welding surface of the product, the laser galvanometer system adjusts the focal length, and the cell tabs on the battery module are automatically welded.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The three-axis pressure head assembly set by the utility model automatically focuses to realize the clamping of the bar in sequence, and the three-axis galvanometer assembly automatically focuses downwards to realize automatic welding in sequence, saving manual point positioning, automatic programming through PC, and intelligent one-key switching, which greatly improves production efficiency and production rhythm, and at the same time has high welding accuracy and better welding stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the welding fixture unit in the embodiment of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the three-axis motion unit of the laser galvanometer in the embodiment of the utility model;

[0015] Figure 4 This is an enlarged structural diagram of the three-axis motion component 1 in the embodiment of the utility model;

[0016] Figure 5 This is an enlarged structural diagram of the tab pressing nozzle in the embodiment of the utility model;

[0017] Figure 6 It is an enlarged structural diagram of the lifting and rotating assembly in the embodiment of the utility model.

[0018] In the figure:

[0019] 1. Base frame;

[0020] 2. Laser galvanometer three-axis motion unit; 20. Column 1; 21. Lifting and rotating assembly; 211. Large plate 1; 212. Large plate 2; 213. Connector 1; 214. Mounting plate 1; 215. Linear bearing; 216. Guide column; 217. Mounting plate 2; 218. Rotating drive; 219. Lifting drive; 22. Conveying roller assembly; 23. Three-axis motion assembly 1; 231. Fixed plate 1; 232. Side plate; 233. Top plate; 234. X-axis motion module; 235. Z-axis mounting plate; 236. Z-axis drive; 237. Y-axis drive; 238. Tab press; 24. Tray assembly; 251. Single-sided tab battery module; 252. Double-sided tab battery module;

[0021] 3. Welding fixture unit; 30. Column; 31. Beam; 32. Three-axis motion component 2; 33. Laser galvanometer system; 34. CCD camera component; 35. Distance measurement component. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1-6 The utility model provides a technical solution: a soft pack battery module welding device, comprising a base frame 1 and a welding fixture unit 2 and a laser galvanometer three-axis motion unit 3 arranged on the base frame 1, wherein the welding fixture unit 2 has a conveying roller assembly 22, a three-axis motion assembly 23, a jacking and rotating assembly 21 and a column 20, a tray assembly 24 is loaded with a single-sided tab battery module 251 or a double-sided tab battery module 252 to be welded, and the jacking and rotating assembly 21 includes a large plate 1 211, a large plate 212, a connecting piece 1 213, a mounting plate 1 214, a linear bearing 215, a guide column 216, a mounting plate 217, and a rotation drive Part 218, jacking drive part 219; the said column 1 20 is provided with four and they are all mounted on the base frame 1, and a large plate 1 211 and a large plate 212 are respectively mounted above every two of the said columns 1 20, and the large plate 1 211 and the large plate 212 are respectively locked with the matching connecting part 1 213; the said connecting part 1 213 is locked with the mounting plate 1 214, and a jacking drive part 219 is installed under the mounting plate 1 214, and a linear bearing 215 is installed on the mounting plate 1 214, and a guide column 216 is installed in the linear bearing 215; a mounting plate 217 is installed on the guide column 216, and a rotating drive part 218 is installed on the mounting plate 217.

[0026] In this embodiment, the conveying roller assembly 22 is installed on large plate 1 211 and large plate 212, and a pallet assembly 24 is arranged on the conveying roller assembly 22. The conveying roller assembly 22 can drive the pallet assembly 24 to move to the welding area, and the pallet assembly 24 can be lifted and fixed by the lifting and rotating assembly 21 after being in place in the welding area.

[0027] In this embodiment, a pressure head assembly is installed under the three-axis motion assembly 23, and the three-axis motion assembly 23 has a fixed plate 231, a side plate 232, a top plate 233, an X-axis motion module 234, a Z-axis mounting plate 235, a Z-axis driving member 236, and a Y-axis driving member 237, wherein the fixed plate 231 is installed above the large plate 1 211 and the large plate 212, the side plate 232 is installed on the fixed plate 231, and the top plate is installed on the side plate 232. 233, and an X-axis motion module 234 is installed on the top plate 233; the X-axis motion module 234 is installed with a Z-axis mounting plate 235, the Z-axis driving component 236 is installed on the Z-axis mounting plate 235, the Y-axis driving component 237 is installed on the Z-axis driving component 236, and the tab pressing nozzle 238 is installed on the Y-axis driving component 237. The three-axis motion component 23 can drive the tab pressing nozzle 238 to press the battery cell tab after the lifting and rotating component 21 lifts and fixes the product.

[0028] In this embodiment, the laser galvanometer three-axis motion unit 3 has a column 2 30, a beam 31, a three-axis motion assembly 2 32, a laser galvanometer system 33, a CCD camera assembly 34 and a distance measuring assembly 35, wherein two columns 2 30 are provided and are mounted on the base frame 1, the two columns 2 30 are mounted with a beam 31, and the three-axis motion assembly 2 32 is mounted on the beam 31, and the laser galvanometer system 33, the CCD camera assembly 34 and the distance measuring assembly 35 are mounted on the three-axis motion assembly 2 32. After the pressure head assembly presses the cell tab, the CCD camera assembly 34 takes a photo to locate the battery module to be welded, that is, the position of the cell tab on the single-side tab battery module 251 or the double-side tab battery module 252, the three-axis motion assembly 2 32 drives the laser galvanometer system 33 to move to the welding position, and then the distance measuring assembly 35 detects the distance between the galvanometer and the welding surface of the product, and the laser galvanometer system 33 adjusts the focal length to automatically weld the cell tab on the battery module.

[0029] The following is the welding process of the device of this embodiment for the single-sided tab battery module 251 and the double-sided tab battery module 252, including the following:

[0030] For welding of the single-sided tab module 251: the tray assembly 24 loads the single-sided tab module 251 and is driven to the welding area by the conveying roller assembly 22. After the tray assembly 24 is in place, it is lifted and fixed by the lifting and rotating assembly 21. After the three-axis motion assembly 2 32 obtains the in-place model through the PLC, the three-axis motion assembly 2 32 drives the CCD camera assembly 34 to take pictures and locate the single-sided tab battery module 251 to be welded. After the photo positioning is completed, the three-axis motion assembly 2 32 drives the laser galvanometer system 33 to move to the welding position, and then the distance measuring assembly 35 detects the distance between the galvanometer and the welding surface of the product. The laser galvanometer system 33 adjusts the focal length and emits a laser from the right side to the battery cell tab on the battery module to automatically weld the battery cell tab on the left side. After the welding is completed, the lifting and rotating assembly 21 automatically descends, and the conveying roller assembly 22 drives the tray assembly 24 to flow out of the welding station, completing the automatic welding of the single-sided tab module 251.

[0031] For welding of double-sided tab battery module 252: tray assembly 24 loads double-sided tab battery module 252 and is driven to the welding area by conveying roller assembly 22. After tray assembly 24 is in place, it is lifted and fixed by lifting and rotating assembly 21. After three-axis motion assembly 2 32 obtains the in-place model through PLC, three-axis motion assembly 2 32 drives CCD camera assembly 34 to take photos and locate the double-sided tab battery module 252 to be welded. After the photo positioning is completed, three-axis motion assembly 2 32 drives laser galvanometer system 33 to move to the welding position, and then distance measuring assembly 35 detects the distance between the galvanometer and the welding surface of the product. Laser galvanometer system 33 adjusts the focal length and emits laser from the right side to the tab of the battery module to automatically weld the tab on the right side of the double-sided tab battery module 252. When the welding of the tab on the right side of the double-sided tab battery module 252 is completed, PLC obtains the welding completion signal, and PLC controls lifting and rotating assembly 2 1 sends a rotation signal, the lifting and rotating component 21 rotates again, and the PLC sends a signal to the three-axis motion component 2 32, so that the left side of the double-sided tab battery module 252 can be automatically welded. The three-axis motion component 2 32 drives the CCD camera component 34 to take pictures and locate the left side of the double-sided tab battery module 252 to be welded. After the camera positioning is completed, the three-axis motion component 2 32 drives the laser galvanometer system 33 to move to the welding position, and then the distance measuring component 35 detects the distance between the galvanometer and the welding surface of the product. The laser galvanometer system 33 adjusts the focal length and emits laser from the right side to the battery module on the battery cell tab to automatically weld the left side of the double-sided tab battery module 252. When welding is completed, the PLC sends a signal to the lifting and rotating assembly 21, and the lifting and rotating assembly 21 rotates again, so that the orientation of the double-sided tab battery module 252 after welding is completed is consistent with the orientation before welding is completed. After the rotation is completed, the lifting and rotating assembly 21 automatically descends, and the conveying roller assembly 22 drives the tray assembly 24 out of the welding station, completing the automatic welding of the double-sided tab battery module 252.

[0032] The above-mentioned embodiment innovatively implements the laser welding system + in-station rotating jacking assembly, and utilizes the laser galvanometer three-axis motion unit and the welding fixture unit to quickly realize the welding of the battery cell module, and is compatible with most single-sided tab battery modules and double-sided tab battery modules on the market, which greatly saves consumables and energy consumption and improves efficiency.

[0033] In specific implementation, the battery module is placed on the tray assembly 24 through the previous process, the conveying roller assembly 22 conveys the tray assembly 24 and the battery module on the tray assembly 24 to the laser welding area, the lifting and rotating assembly 21 lifts and fixes the battery module, the tab pressing nozzle 238 presses the battery tabs to be welded, and the laser galvanometer system 33 automatically focuses to realize automatic welding in sequence. It saves manual points, and through automatic programming and intelligent one-button switching, it greatly improves production efficiency and production rhythm. Laser welding is non-contact welding, safe, environmentally friendly, and has no consumables, and basically realizes the characteristics of maintenance-free.

[0034] It is worth noting that the entire device is controlled by a main control button. Since the device matched with the control button is a common device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soft pack battery module welding device, characterized in that: The invention comprises a base frame (1), a welding fixture unit (2) and a laser galvanometer three-axis motion unit (3) arranged on the base frame (1), wherein the welding fixture unit (2) comprises a conveying roller assembly (22), a three-axis motion assembly (23), a lifting and rotating assembly (21) and a column (20); a tray assembly (24) is loaded with a single-sided tab battery module (251) or a double-sided tab battery module (252) to be welded; the lifting and rotating assembly (21) comprises a large plate (211), a large plate (212), a connecting piece (213), a mounting plate (214), a linear bearing (215), a guide column (216), a mounting plate (217), a rotating drive component (218), a lifting drive component (219), and a plurality of rotating components. ); There are four columns (20) and they are all mounted on the base frame (1); large plate (211) and large plate (212) are respectively mounted above every two columns (20); large plate (211) and large plate (212) are respectively locked with matching connecting piece (213); connecting piece (213) is locked with mounting plate (214); a lifting driving piece (219) is mounted below mounting plate (214); a linear bearing (215) is mounted on mounting plate (214); and a guide column (216) is mounted in the linear bearing (215); a mounting plate (217) is mounted on the guide column (216); and a rotating driving piece (218) is mounted on mounting plate (217).

2. The soft pack battery module welding equipment according to claim 1, characterized in that: The conveying roller assembly (22) is installed on the large plate 1 (211) and the large plate 2 (212). The tray assembly (24) is arranged on the conveying roller assembly (22). The conveying roller assembly (22) can drive the tray assembly (24) to move to the welding area. After the tray assembly (24) is in place in the welding area, it can be lifted and fixed by the lifting and rotating assembly (21).

3. The soft pack battery module welding equipment according to claim 1, characterized in that: A pressure head assembly is installed under the three-axis motion assembly (23). The three-axis motion assembly (23) comprises a fixed plate (231), a side plate (232), a top plate (233), an X-axis motion module (234), a Z-axis mounting plate (235), a Z-axis driving component (236), and a Y-axis driving component (237). The fixed plate (231) is installed above the large plate (211) and the large plate (212). The fixed plate (231) is installed with a side plate (232). The side plate (232) is installed with a top plate (233). 233), and an X-axis motion module (234) is installed on the top plate (233); a Z-axis mounting plate (235) is installed on the X-axis motion module (234), a Z-axis driving component (236) is installed on the Z-axis mounting plate (235), a Y-axis driving component (237) is installed on the Z-axis driving component (236), and a tab pressing nozzle (238) is installed on the Y-axis driving component (237). The three-axis motion component (23) can drive the tab pressing nozzle (238) to press the tab of the battery cell after the lifting and rotating component (21) lifts and fixes the product.

4. The soft pack battery module welding equipment according to claim 1, characterized in that: The laser galvanometer three-axis motion unit (3) comprises a second upright column (30), a crossbeam (31), a second three-axis motion component (32), a laser galvanometer system (33), a CCD camera component (34) and a distance measurement component (35), wherein two second upright columns (30) are provided and are mounted on a base frame (1), the two second upright columns (30) are mounted with crossbeams (31), the second three-axis motion component (32) is mounted on the crossbeam (31), and the second three-axis motion component (32) is mounted with a laser galvanometer system (33), a CCD camera component (34) and a distance measurement component (35).

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