Laser welding battery positioning tool

Abstract

The utility model discloses a laser welding battery positioning tool, which relates to the technical field of clamp tools and comprises a welding table, a processing groove is arranged in the middle of the welding table, cover pressing mechanisms are arranged on two sides of the processing groove, and each cover pressing mechanism comprises a positioning pressing block component and a second cylinder. The positioning pressing block assembly comprises a positioning supporting plate, a positioning sliding plate, a positioning pressing plate and a positioning connecting plate. A first air cylinder, a top cover plate and an ejector rod located in the top cover plate are sequentially installed on the positioning supporting plate. In the utility model, the end part of the processed battery can be respectively positioned and pressed through each group of gland mechanisms, when laser welding is needed, the laser welding work can be carried out on the area by loosening the positioning pressing plate in one group of gland mechanisms, and the other side of the processed battery is in a pressed state, so that the optimal part contact of the processed battery is ensured, and the laser welding efficiency is improved. Consistent registration and tight tolerance between components are kept, and the welding quality of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fixture tooling, in particular to a positioning tooling for laser welding batteries. Background Technique

[0002] Laser welding is a method of welding by using the heat generated by bombarding the welded parts with a focused laser beam. Due to the optical properties of the laser such as refraction and focusing, laser welding is very suitable for welding of micro parts and parts with very poor accessibility. In the electric vehicle industry, battery packs are assembled by laser welding. Any gap or misalignment in the components will affect the overall performance and lifespan of the battery, and may lead to costly recalls. These gaps will also cause failure modes, that is, the weld seams will bear stress and eventually lead to weld seam failure over time; in addition, such gaps are also prone to accumulate oxides and contaminants, resulting in further oxidation of the weld seam from the back. Therefore, when the battery is laser welded, a fixture tooling is needed to clamp the battery pack.

[0003] The existing positioning tooling for laser welding batteries usually tightens and fixes the periphery of the battery pack. However, when the battery pack clamped by this clamping method performs the end laser welding operation, the top weld seam of the processed battery is prone to deviation, thereby affecting the service life of the battery. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defect that the existing positioning tooling for laser welding batteries usually tightens and fixes the periphery of the battery pack. However, when the battery pack clamped by this clamping method performs the end laser welding operation, the top weld seam of the processed battery is prone to deviation, thereby affecting the service life of the battery, and a positioning tooling for laser welding batteries is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A positioning tooling for laser welding batteries, including a welding table, a processing groove is opened in the middle of the welding table, pressing cover mechanisms are arranged on both sides of the processing groove, the pressing cover mechanism includes a positioning pressing block assembly and a second cylinder, the positioning pressing block assembly includes a positioning support plate, a positioning sliding plate, a positioning pressing plate and a positioning connecting plate, a first cylinder, a top cover plate and a top rod located inside the top cover plate are sequentially installed on the positioning support plate, a linear bearing is inserted on the positioning support plate, and an elastic member connected to the positioning connecting plate and the positioning sliding plate penetrates through the linear bearing.

[0007] Preferably, a sliding structure is formed between the positioning support plate and the welding table by arranging a slider assembly. The slider assembly includes a slider and a linear slide rail, enabling the positioning support plates on each gland mechanism to smoothly move in position on the processing groove under the cooperation of the slider assembly, facilitating the loading and unloading of processed batteries in the processing groove and convenient to use.

[0008] Preferably, the positioning slide plate, the positioning connecting plate and the positioning support plate form a movable structure through linear bearings. The positioning slide plate and the positioning pressure plate are fixedly connected by bolts. When the positioning slide plate is not under pressure, it can cooperate with the elastic member and the linear bearing to restore its position. Under the contraction force of the elastic member, the positioning slide plate moves upward to release the pressing action on one side of the processed battery, thereby facilitating the laser welding work in this area.

[0009] Preferably, a tension pulley is arranged below the ejector rod on the positioning slide plate. One end of the ejector rod is in an inclined shape, which cooperates with the tension pulley. When the ejector rod moves towards the tension pulley under the drive of the first cylinder, the tension pulley is pressed, thereby achieving the purpose of pressing down the positioning slide plate. Further, the positioning pressure plate connected to the positioning slide plate presses one side of the battery module, facilitating subsequent good laser welding, ensuring the best part contact, maintaining the consistent registration and tight tolerance between components.

[0010] Preferably, a linear module is installed on the inner wall of the welding table. A clamping fixing seat is installed on the slider of the linear module. A battery support fixture is installed on the clamping fixing seat. A servo motor is installed on the linear module. Through the operation of the servo motor, the threaded slider in the linear module cooperates with the lead screw to perform lifting actions, thereby driving the clamping fixing seat to perform up and down movement adjustment work, facilitating the smooth progress of the loading and unloading of batteries.

[0011] Preferably, the battery support fixture includes a battery baffle, a lower support plate, a floating pressure plate and a battery module clamped in the battery baffle. A sliding structure is formed between the lower support plate and the clamping fixing seat through sliding parts. The battery support fixture assembled with batteries is loaded onto the clamping fixing seat through the sliding parts after assembling a group of batteries, facilitating subsequent battery laser welding work.

[0012] Preferably, a positioning push plate is arranged at the end of the positioning support plate. A suction cup plate is arranged below the front end of the positioning push plate. A vacuum suction cup is installed at the bottom of the suction cup plate. The positioning push plate is connected to the telescopic part of the second cylinder. By opening the air pipe solenoid valve connected to the second cylinder, the second cylinder pushes the positioning push plate towards the processing groove, causing the positioning support plate connected to the positioning push plate to move in the same direction in cooperation with the slider assembly.

[0013] Preferably, clamping mechanisms are respectively arranged under the processing grooves. The clamping mechanisms include micro-cylinders and reference pressing bars. The clamping mechanisms include long-side clamping components and short-side clamping components. There are several groups of clamping mechanisms. The short-side clamping components are arranged at the short sides of the processing grooves, and the long-side clamping components are arranged at the long sides of the processing grooves. The four sides of the battery module can be stably clamped through the short-side clamping components and the long-side clamping components.

[0014] Preferably, buffer blocks are arranged on both sides of the processing grooves. Oil-pressure buffer rods are arranged at both ends of the buffer blocks. When the positioning pressing plate on the positioning pressing block assembly moves towards the processing groove, buffering is carried out through the buffer blocks and the oil-pressure buffer rods, avoiding rigid collisions between the positioning pressing plates on each group of opposite positioning pressing block assemblies, thereby affecting the integrity of the ends of the positioning pressing plates and the clamping firmness of the subsequent processed batteries, and having high practicability.

[0015] To sum up, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0016] 1. In the present utility model, through each group of gland mechanisms, the end parts of the processed batteries can be respectively positioned and pressed. When laser welding is required, the positioning pressing plate in a group of gland mechanisms can be loosened to carry out laser welding work on this area, and the other side of the processed battery is in a pressed state, ensuring the best part contact of the processed battery, maintaining the consistent registration and tight tolerance between components, and being beneficial to improving the battery welding quality.

[0017] 2. In the present utility model, through the action of the positioning push plate in the gland mechanism and the vacuum suction cups on the suction cup plate, when laser welding work is carried out, the vacuum suction cups cooperate with the vacuum generator to adsorb the processed battery. The suction cup plate increases the firmness of the processed battery, making the processed battery clamped tightly and having high stability during laser welding.

[0018] 3. In the present utility model, through the cooperative action of the linear module and the clamping and fixing seat, the servo motor on the linear module works, enabling the threaded slider in the linear module to cooperate with the lead screw for lifting and lowering operations, and then driving the clamping and fixing seat to perform up and down movement adjustment work, facilitating the smooth loading and unloading of the processed batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the welding table in the present utility model;

[0020] Figure 2 It is an enlarged schematic diagram of part A in the present utility model;

[0021] Figure 3 It is a schematic diagram of the inner structure of the welding table in the present utility model;

[0022] Figure 4 This is a schematic diagram of the top structure of the welding table in the present utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the positioning press block assembly in the present utility model.

[0024] Legend:

[0025] 1. Welding table; 2. Processing groove; 3. Capping mechanism; 4. Positioning press block assembly; 401. Positioning support plate; 402. Positioning sliding plate; 403. Positioning pressing plate; 404. Positioning connecting plate; 405. First cylinder; 406. Slide block assembly; 407. Elastic member; 408. Linear bearing; 409. Thrust rod; 410. Top cover plate; 5. Second cylinder; 6. Positioning push plate; 7. Vacuum suction cup; 8. Suction cup plate; 9. Servo motor; 10. Clamping mechanism; 11. Short side clamping assembly; 12. Battery support fixture; 13. Linear module; 14. Clamping and fixing seat; 15. Buffer block; 1501. Oil pressure buffer rod; 16. Long side clamping assembly. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Referring to Figures 1-5 , a laser welding battery positioning tooling, including a welding table 1, a processing groove 2 is provided in the middle of the welding table 1, capping mechanisms 3 are arranged on both sides of the processing groove 2, the capping mechanism 3 includes a positioning press block assembly 4 and a second cylinder 5, the positioning press block assembly 4 includes a positioning support plate 401, a positioning sliding plate 402, a positioning pressing plate 403 and a positioning connecting plate 404, a first cylinder 405, a top cover plate 410 and a thrust rod 409 located inside the top cover plate 410 are sequentially installed on the positioning support plate 401, a linear bearing 408 is inserted on the positioning support plate 401, and an elastic member 407 connected to the positioning connecting plate 404 and the positioning sliding plate 402 penetrates through the linear bearing 408.

[0028] By adopting the above technical solution, through the array of gland mechanisms 3 arranged on the welding table 1, the locking actions are respectively performed on the four peripheries of the end of the battery module to ensure the best part contact between the processed battery modules, maintain the consistent registration and tight tolerances between components. Then, when laser welding is required, the positioning block assemblies 4 on each group of gland mechanisms 3 work respectively. According to the laser welding points, the positioning pressing plates 403 in this area are sequentially loosened, so that the processed battery remains in a partially clamped state during the laser welding process, making the processed battery stable. Through this structural design, the welding accuracy of the processed battery is high and the welding quality is good. The elastic member 407 includes a compression spring and a positioning connecting rod. One end of the elastic member 407 close to the compression spring is connected to the positioning connecting plate 404, and one end of the positioning connecting rod is connected to the positioning sliding plate 402.

[0029] As Figure 4 shown in Figure 5 Figure, a sliding structure is formed between the positioning support plate 401 and the welding table 1 by arranging a slider assembly 406. The slider assembly 406 includes a slider and a linear slide rail.

[0030] By adopting the above technical solution, there are two groups of gland mechanisms 3, which are respectively arranged at the long sides of the processing groove 2 on the welding table 1. By cooperating with the slider assembly 406, the positioning support plates 401 on each group of gland mechanisms 3 can smoothly reciprocate at the long sides of the processing groove 2. When the positioning support plate 401 is moved away from the processing groove 2 by cooperating with the slider assembly 406, it is convenient to load the processed battery into the processing groove 2 of the welding table 1. After the loading is completed, by cooperating with the slider assembly 406, the positioning support plate 401 is moved to the position of the processing groove 2. Through this structure, it is convenient to perform the loading and unloading actions on the processed battery and the welding table 1.

[0031] Furthermore, the positioning sliding plate 402, the positioning connecting plate 404 and the positioning support plate 401 form a movable structure through a linear bearing 408, and the positioning sliding plate 402 and the positioning pressing plate 403 are fixedly connected by bolts.

[0032] By adopting the above technical solution, when laser welding work needs to be performed on one side of the end of the processed battery, the first cylinder 405 inside the positioning block assembly 4 on a group of gland mechanisms 3 resets the positioning sliding plate 402, so that the pressure on the top of the positioning sliding plate 402 disappears. Under the action of the contraction force of the elastic member 407, the positioning sliding plate 402 moves upward to achieve the purpose of loosening the pressing operation on one side of the processed battery, facilitating the laser welding work on this part.

[0033] Specifically, a tension wheel is arranged on the positioning sliding plate 402 below the ejector rod 409, and one end of the ejector rod 409 is in an inclined shape.

[0034] By adopting the above technical solution, the structure between the tension pulley and the positioning support plate 401 is movable. After the tension pulley is subjected to pressure, it can move downward to abut against the positioning slide plate 402, so that the ejector rod 409 moves towards the tension pulley under the drive of the first cylinder 405, compressing the tension pulley, and further achieving the purpose of pressing down the positioning slide plate 402. Furthermore, the positioning pressing plate 403 connected to the positioning slide plate 402 presses one side of the battery module, facilitating subsequent good laser welding, ensuring the best part contact, and maintaining consistent registration and tight tolerances between components.

[0035] As Figure 1 shown in Figure 3 Figure, a linear module 13 is installed on the inner wall of the inner side of the welding table 1. A clamping fixed seat 14 is installed on the slider of the linear module 13. A battery support fixture 12 is installed on the clamping fixed seat 14. A servo motor 9 is installed on the linear module 13.

[0036] By adopting the above technical solution, the linear module 13 includes a threaded lead screw and a slider. The threaded lead screw is driven by the servo motor 9, so that the threaded slider cooperating with the threaded lead screw drives the clamping fixed seat 14 to perform mechanical lifting operations inside the welding table 1, facilitating the loading and unloading of the processed battery.

[0037] Specifically, the battery support fixture 12 includes a battery baffle, a lower support plate, a floating pressing plate, and a battery module clamped inside the battery baffle. A sliding structure is formed between the lower support plate and the clamping fixed seat 14 through a sliding member.

[0038] By adopting the above technical solution, when the clamping fixed seat 14 rises, the clamping fixed seat 14 passes through the processing groove 2 and extends out of the surface of the welding table 1, facilitating the fitting work of the battery support fixture 12 holding the processed battery with the sliding member and the clamping fixed seat 14. Then, through the linear module 13, the clamping fixed seat 14 carrying the processed battery is moved down inside the welding table 1, facilitating the clamping operation on the end of the processed battery and facilitating the subsequent laser welding work.

[0039] As Figure 1 shown in Figure 2 Figure, a positioning push plate 6 is arranged at the end of the positioning support plate 401. A suction cup plate 8 is installed below the front end of the positioning push plate 6. A vacuum suction cup 7 is installed at the bottom of the suction cup plate 8. The positioning push plate 6 is connected to the telescopic part of the second cylinder 5.

[0040] By adopting the above technical solution, by opening the air pipe solenoid valve connected to the second cylinder 5, the second cylinder 5 is made to push the positioning push plate 6 towards the processing groove 2, so that the positioning support plate 401 connected to the positioning push plate 6 moves in the same direction in cooperation with the slider assembly 406. The pressing force of the processed battery is increased through the suction cup plate 8, making the processed battery firmly clamped and ensuring the best part contact.

[0041] like Figure 1 and Figure 3 As shown, a clamping mechanism 10 is respectively arranged under the processing groove 2, the clamping mechanism 10 includes a micro cylinder and a reference pressure strip, the clamping mechanism 10 includes a long side clamping component 16 and a short side clamping component 11, and the clamping mechanism 10 is provided with an array.

[0042] By adopting the above technical solution, the short side clamping assembly 11 is arranged at the short side of the processing groove 2, and the long side clamping assembly 16 is arranged at the long side of the processing groove 2. The short side clamping assembly 11 and the long side clamping assembly 16 can provide stable clamping work for the four sides of the battery module.

[0043] like Figure 1 and Figure 4 As shown, buffer blocks 15 are provided on both sides of the processing groove 2 , and hydraulic buffer rods 1501 are provided at both ends of the buffer block 15 .

[0044] By adopting the above-mentioned technical scheme, when the positioning pressure plate 403 on the positioning pressure block assembly 4 moves toward the processing groove 2, it is buffered by the buffer block 15 and the oil pressure buffer rod 1501, thereby avoiding rigid collision of the positioning pressure plates 403 on each group of relative positioning pressure block assemblies 4, thereby affecting the integrity of the end of the positioning pressure plate 403 and the subsequent clamping firmness of the processed battery, and has high practicality.

[0045] Working principle: When in use, the clamping seat 14 is raised and extended out of the processing groove 2 through the linear module 13, so that the battery support fixture 12 loaded with the array processed battery is installed in conjunction with the sliding piece and the clamping seat 14. Then, the linear module 13 is moved down to make the end face of the processed battery on the battery support fixture 12 horizontal with the processing groove 2. Then, the array capping mechanism 3 on the welding table 1 is pushed by the slider assembly 406 through the second cylinder 5 to move the array capping mechanism 3 toward the processing groove 2 respectively, and abut against the buffer block 15 for limiting buffering, so that the positioning plate 403 on the capping mechanism 3 is located above the processed battery. Again, the array capping machine The first cylinder 405 on the structure 3 works, pushing the push rod 409 to press the tensioning wheel to make the positioning slide plate 402 move downward, and locking the four sides of the end of the battery module respectively, to ensure the best parts contact between the processed battery modules, maintain consistent alignment and close tolerances between the components, and then, when laser welding is required, the positioning block assemblies 4 on each group of the capping mechanism 3 work respectively, and according to the laser welding point, the positioning pressure plate 403 in the area is released in turn, so that the processed battery can maintain a partially clamped state during the laser welding process, so that the laser welding of the processed battery is stable. Through this structural design, the welding accuracy of the processed battery is high and the welding quality is good.

[0046] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent replacements or changes should be covered within the protection scope of the present utility model.

Claims

1. A laser welding battery positioning tooling, characterized in that It includes a soldering table, a processing groove is provided in the middle of the soldering table, and gland mechanisms are arranged on both sides of the processing groove. The gland mechanism includes a positioning press block assembly and a second cylinder. The positioning press block assembly includes a positioning support plate, a positioning slide plate, a positioning press plate and a positioning connecting plate. A first cylinder, a top cover plate and a top rod located inside the top cover plate are sequentially installed on the positioning support plate. A linear bearing is inserted into the positioning support plate, and an elastic member connected to the positioning connecting plate and the positioning slide plate penetrates through the linear bearing.

2. The laser welding battery positioning tooling according to claim 1, wherein, A sliding structure is formed between the positioning support plate and the soldering table by arranging a slider assembly. The slider assembly includes a slider and a linear slide rail.

3. The laser welding battery positioning tooling according to claim 1, wherein The positioning slide plate, the positioning connecting plate and the positioning support plate form a movable structure through a linear bearing, and the positioning slide plate and the positioning press plate are fixedly connected by bolts.

4. A laser welding battery positioning tooling according to claim 3, characterized in that, A tension pulley is arranged on the positioning slide plate below the top rod, and one end of the top rod is in an inclined surface shape.

5. A laser welding battery positioning tooling according to claim 1, characterized in that, A linear module is installed on the inner wall of the soldering table. A clamping fixed seat is installed on the slider of the linear module. A battery support fixture is installed on the clamping fixed seat, and a servo motor is installed on the linear module.

6. The laser welding battery positioning tooling according to claim 5, characterized in that, The battery support fixture includes a battery baffle, a lower support plate, a floating press plate and a battery module clamped in the battery baffle. A sliding structure is formed between the lower support plate and the clamping fixed seat through a sliding member.

7. A laser welding battery positioning tooling according to claim 1, characterized in that, A positioning push plate is arranged at the end of the positioning support plate. A suction cup plate is arranged below the front end of the positioning push plate. A vacuum suction cup is installed at the bottom of the suction cup plate. The positioning push plate is connected to the telescopic part of the second cylinder.

8. The laser welding battery positioning tooling according to claim 1, characterized in that Clamping mechanisms are respectively arranged below the processing groove. The clamping mechanism includes a micro cylinder and a reference pressing strip. The clamping mechanism includes a long-side clamping component and a short-side clamping component, and several groups of the clamping mechanisms are provided.

9. A laser welding battery positioning tooling according to claim 1, characterized in that, Buffer blocks are arranged on both sides of the processing groove, and oil pressure buffer rods are arranged at both ends of the buffer blocks.

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