A jig for lithium battery processing

Abstract

The utility model discloses a kind of for lithium battery processing's fixture, belong to fixture field, including fixture table, the fixture table is equipped with pressure strip board, down pressure adjusting part and auxiliary limiting part, wherein, the pressure strip board is cooperated with down pressure adjusting part, lithium battery and circuit board can be pressed down, the auxiliary limiting part is used to carry out secondary location to lithium battery on the fixture table, several groups of welding alignment cylinder are set up on the pressure strip board, the position of the welding alignment cylinder corresponds with lithium battery's positive and negative pole piece one to one;By adopting rotating shaft linkage's mechanical pressing structure, rotating shaft is used to drive adapter block, dial lever action, and then drive rectangular plate and guide column to move downwards, realize the down pressure of pressure strip board to lithium battery and circuit board, compared with traditional magnetic attraction mode, the pressure of mechanical pressing is more uniform, controllability is stronger, can effectively avoid the workpiece displacement problem caused by magnetic attraction adsorption force deficiency, greatly improve the positioning stability in welding process.

Description

Technical Field

[0001] This utility model belongs to the field of jig technology, specifically relating to a jig for lithium battery processing. Background Technology

[0002] In the field of lithium battery processing, jigs are special tooling fixtures designed for positioning, clamping, guiding, and inspection processes in lithium battery production. Their core function is to ensure processing accuracy, improve production efficiency, and ensure operational safety. They are indispensable auxiliary equipment for the entire process of lithium battery production, from electrode manufacturing to cell packaging and module assembly.

[0003] According to the authorization announcement number CN214641270U, ​​a magnetic positioning fixture for lithium battery welding is known prior art. Although this patent can fine-tune the adjustment block to adapt to the size of the lithium battery and press the PCB board and positive and negative terminals of the lithium battery with the pressure strip, it can facilitate welding, avoid false welding and improve the yield. However, the technical solution of this patent still has the following defects in actual use: First, the patent achieves the fixation of the pressure strip by the attraction force of the first magnet and the second magnet. However, the magnetic attraction force is greatly affected by the magnet's magnetic attenuation and the flatness of the workpiece surface, which can easily lead to insufficient attraction force. This can cause slight displacement of the lithium battery or circuit board during the welding process, resulting in problems such as welding misalignment and poor soldering. Second, the welding holes of this patent are fixed through holes opened on the pressure strip. The position and spacing of the holes cannot be adjusted. When facing lithium batteries of different models and different positive and negative electrode spacing, the welding holes of the fixed position cannot be aligned with the welding target point, resulting in the fixture being only compatible with a single specification of lithium battery, with poor versatility. Third, the patent achieves the limit by adjusting the blocks around the four edges of the base plate in conjunction with screws. When adjusting, the screws must be loosened first, the adjusting blocks moved to the target position, and then the screws tightened to fix it. The whole process requires the use of tools and is cumbersome. Utility Model Content

[0004] The purpose of this invention is to provide a fixture for lithium battery processing to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixture for lithium battery processing, comprising a fixture table, wherein a pressure strip, a pressure adjustment component, and an auxiliary limiting component are mounted on the fixture table; The pressure plate, in conjunction with the downward adjustment component, can press down on the lithium battery and circuit board, and the auxiliary limiting component is used to perform secondary limiting on the lithium battery on the fixture table. The pressure plate has several sets of welding alignment cylinders, and the positions of the welding alignment cylinders correspond one-to-one with the positive and negative electrode plates of the lithium battery.

[0006] In a preferred embodiment, the pressure strip has a through cavity along the vertical direction, and a side cavity with a top through-hole is formed on one side wall of the through cavity. A toggle plate is fixedly connected to one side of the welding alignment cylinder. The toggle plate is disposed through the side cavity, and a stud is fixedly connected to the toggle plate. The stud extends out of the top through-hole area of ​​the side cavity, and a locking nut is adapted to be installed at the upper end of the stud.

[0007] In a preferred embodiment, the pressure adjustment component includes a guide post and a first spring block. The pressure plate, in conjunction with the first spring block, forms a gap with the surface of the fixture. The guide post is fixedly connected to the pressure plate and extends downward through the pressure plate and the first spring block until it passes through the lower end of the fixture.

[0008] In a preferred embodiment, two sets of guide posts and two sets of first spring blocks are symmetrically arranged. A rectangular plate is fixedly connected to the lower end of each set of guide posts. An actuating rod is abutted against the upper end of the rectangular plate. A second spring is fixedly connected to the actuating rod. The other end of the second spring is fixedly connected to the bottom surface of the fixture. An L-shaped adapter block extends from one end of the actuating rod. The adapter block extends upward into a rectangular cavity opened in the fixture. A rotating shaft is rotatably installed in the rectangular cavity. The adapter block is fixedly connected to the rotating shaft.

[0009] In a preferred embodiment, the auxiliary limiting component includes several sets of positioning rods. Each set of positioning rods is symmetrically fixed to the side walls of both sides of the fixture. Each set of positioning rods has a spacing rod extending from the top towards the middle area of ​​the fixture. A rectangular cavity is fitted onto the spacing rod. A screw cavity is opened at the top of the screw cavity, and a locking stud is disposed in the screw cavity. A stop block is also fixedly connected to one side of the screw block.

[0010] In a preferred embodiment, the clamping end face of the abutment is fitted with a rubber partition using Velcro.

[0011] In a preferred embodiment, the fixture platform is fixedly connected to four support legs at its bottom corners.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This fixture for lithium battery processing employs a mechanical clamping structure linked by a rotating shaft. The rotating shaft drives the adapter block and the toggle lever to move, which in turn drives the rectangular plate and guide post to move downwards. This achieves the downward pressure of the pressure bar on the lithium battery and circuit board. Compared with the traditional magnetic attraction method, the mechanical clamping pressure is more uniform and more controllable. It can effectively avoid the workpiece displacement problem caused by insufficient magnetic attraction force and greatly improve the positioning stability during the welding process. This fixture for lithium battery processing optimizes the fixed welding holes into adjustable welding alignment cylinders. By using a toggle plate to move the welding alignment cylinders along the side cavity of the pressure plate, and with the locking of the studs and locking nuts, the lateral position of the welding alignment cylinders can be flexibly adjusted. This design allows the fixture to be adapted to various types of lithium batteries with different positive and negative electrode spacings. It can complete welding operations for various specifications of products without changing the special pressure plate, thus broadening the applicability of the fixture. This fixture for lithium battery processing, through the setting of auxiliary limiting components, adopts a combination structure of positioning rod, spacing rod and sliding block, which eliminates the need to disassemble the fastening bolts. The spacing between the two sides of the abutment can be quickly adjusted by sliding the block, thus achieving secondary positioning for lithium batteries of various widths. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the installation structure of the auxiliary limiting component of this utility model. Figure 3 This is a schematic diagram of the installation structure of the pressure adjustment component of this utility model. Figure 4 This is a schematic diagram of the welding alignment cylinder installation structure of this utility model.

[0014] In the diagram: 1. Fixture table; 11. Support leg; 2. Pressure strip plate; 21. Side cavity; 3. Welding alignment cylinder; 31. Actuating plate; 32. Stud; 321. Locking nut; 4. Downward adjustment component; 41. Guide post; 42. First spring block; 43. Rectangular plate; 44. Actuating rod; 441. Adapter block; 45. Second spring; 46. Rotating shaft; 5. Auxiliary limiting component; 51. Positioning rod; 52. Spacing rod; 53. Locking block; 531. Locking stud; 54. Abutment block; 541. Rubber partition. Detailed Implementation

[0015] The present invention will be further described below with reference to the embodiments.

[0016] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0017] Please see Figures 1-4This utility model provides a fixture for lithium battery processing, including a fixture table 1. Support legs 11 are fixedly connected to the four corners of the bottom of the fixture table 1. The fixture table 1 is equipped with a pressure plate 2, a pressure adjustment component 4, and an auxiliary limiting component 5. The pressure plate 2 cooperates with the pressure adjustment component 4 to press down the lithium battery and circuit board. The auxiliary limiting component 5 is used to perform secondary limiting on the lithium battery on the fixture table 1. Several sets of welding alignment cylinders 3 are opened on the pressure plate 2. The position of the welding alignment cylinders 3 corresponds one-to-one with the positive and negative electrode plates of the lithium battery. The pressure plate 2 has a through cavity along the vertical direction. A side cavity 21 with a top through-hole is opened on one side wall of the through cavity. A toggle plate 31 is fixedly connected to one side of the welding alignment cylinder 3. The toggle plate 31 is set through the side cavity 21 and a stud 32 is fixedly connected to the toggle plate 31. The stud 32 extends out of the top through-hole area of ​​the side cavity 21. A locking nut 321 is adapted to be installed at the upper end of the stud 32.

[0018] In this embodiment, the welding hole in the fixed position is optimized into a welding alignment cylinder 3 that can be adjusted left and right. The welding alignment cylinder 3 is driven to slide along the side cavity 21 of the pressure plate 2 by the actuating plate 31. With the locking and fixing of the stud 32 and the locking nut 321, the lateral position of the welding alignment cylinder 3 can be flexibly adjusted. This design allows the fixture to be adapted to a variety of lithium batteries with different models and different positive and negative electrode spacings. Welding operations of various specifications of products can be completed without replacing the special pressure plate 2, thus broadening the applicability of the fixture.

[0019] Please see Figure 1 , Figure 3 and Figure 4 The downward adjustment component 4 includes a guide post 41 and a first spring block 42. The pressure plate 2, in conjunction with the first spring block 42, forms a gap with the table surface of the fixture 1. The guide post 41 is fixedly connected to the pressure plate 2. The guide post 41 passes through the pressure plate 2 and the first spring block 42 and continues to extend downward until it passes through the lower end of the fixture 1. Two sets of guide posts 41 and first spring blocks 42 are symmetrically arranged. A rectangular plate 43 is fixedly connected to the lower end of the two sets of guide posts 41. A toggle rod 44 abuts against the upper end of the rectangular plate 43. A second spring 45 is fixedly connected to the toggle rod 44. The other end of the second spring 45 is fixedly connected to the bottom surface of the fixture 1. An L-shaped adapter block 441 extends from one end of the toggle rod 44. The adapter block 441 extends upward into the rectangular cavity opened in the fixture 1. A rotating shaft 46 is rotatably installed in the rectangular cavity. The adapter block 441 is fixedly connected to the rotating shaft 46.

[0020] In this embodiment, the rotating shaft 46 drives the adapter block 441 and the toggle lever 44 to move the rectangular plate 43 and the guide post 41 downward synchronously, thereby driving the pressure plate 2 to press down. Compared with the traditional magnetic attraction method, the mechanical transmission has a more uniform and controllable clamping force, and is not affected by magnetic attenuation. It can ensure that the lithium battery and the circuit board are tightly attached and avoid displacement problems during welding. At the same time, the two sets of guide posts 41 and the first spring block 42 are symmetrically arranged to ensure that the pressure plate 2 is balanced during the pressing process, prevent the workpiece from being deformed by local pressure, and further improve the positioning accuracy.

[0021] Please see Figure 1 and Figure 2 The auxiliary limiting component 5 includes several sets of positioning rods 51. Each set of positioning rods 51 is symmetrically fixed to the two side walls of the fixture table 1. The top of each set of positioning rods 51 extends into the middle area of ​​the fixture table 1 with a spacing rod 52. A rectangular cavity locking block 53 is sleeved on the spacing rod 52. A screw cavity is opened on the top of the locking block 53. A locking stud 531 is arranged in the screw cavity. A stop block 54 is also fixedly connected to one side of the locking block 53. A rubber partition 541 is attached to the clamping end face of the stop block 54 with Velcro.

[0022] In this embodiment, the abutment 54 forms a bidirectional clamping mechanism through the cooperation of the locking block 53 and the spacing rod 52. The locking stud 531 can firmly fix the locking block 53 on the spacing rod 52, preventing the abutment 54 from shifting during welding and ensuring the lateral positioning stability of the lithium battery. At the same time, the clamping end face of the abutment 54 is attached to the rubber spacer 541 with Velcro. The rubber material is soft and has high friction, which can increase the tightness of the fit with the lithium battery shell, prevent the workpiece from sliding, and buffer the clamping pressure to prevent damage to the lithium battery shell. In addition, compared with the traditional limiting structure that is adjusted by screws, the auxiliary limiting component 5 does not require complicated tools. The locking block 53 can be slid to adjust the spacing simply by loosening the locking stud 531. After adjustment, the locking stud 531 can be tightened to complete the fixation.

[0023] Working principle and usage process of this utility model: When in use, first adjust the auxiliary limiting component 5 according to the lithium battery specifications, loosen the locking stud 531 on the card block 53, slide the card block 53 along the spacing rod 52 so that the two side blocks 54 fit against the two sides of the lithium battery laterally, tighten the locking stud 531 to fix it, and the rubber diaphragm 541 enhances the clamping stability and protects the shell, thus completing the secondary lateral limiting. Subsequently, the lithium battery and circuit board are placed on the fixture table 1, and the sliding welding alignment cylinder 3 is aligned with the positive and negative electrode plates of the lithium battery by sliding the welding alignment cylinder 3 to make the welding alignment cylinder 3 align with the positive and negative electrode plates of the lithium battery, and then locked and fixed by the stud 32 and the locking nut 321. Then, rotate the rotating shaft 46 to drive the adapter block 441 and the lever 44 to move together, press the rectangular plate 43 downward, and then drive the pressure plate 2 to press down through the guide column 41. The first spring block 42 is compressed, the pressure plate 2 tightly presses the workpiece, and then the welding tool is used to complete the welding through the channel of the welding alignment cylinder 3. After welding is completed, rotate the rotating shaft 46 in the opposite direction. The actuating rod 44 rebounds under the reset force of the second spring 45, which drives the rectangular plate 43, guide post 41 and pressure plate 2 to lift automatically. The workpiece can be removed by releasing the locking stud 531.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for lithium battery processing, comprising a fixture table (1), characterized in that: The fixture table (1) is equipped with a pressure strip (2), a pressure adjustment component (4), and an auxiliary limiting component (5). The pressure plate (2) cooperates with the downward adjustment component (4) to press down the lithium battery and circuit board, and the auxiliary limiting component (5) is used to limit the lithium battery on the fixture table (1) for a second time. The pressure plate (2) is provided with several sets of welding alignment cylinders (3), and the positions of the welding alignment cylinders (3) correspond one-to-one with the positive and negative electrode plates of the lithium battery.

2. The fixture for lithium battery processing according to claim 1, characterized in that: The pressure strip (2) has a through cavity in the vertical direction. A side cavity (21) with a top through opening is opened on one side wall of the through cavity. A toggle plate (31) is fixedly connected to one side of the welding alignment cylinder (3). The toggle plate (31) is set through the side cavity (21), and a stud (32) is fixedly connected on the toggle plate (31). The stud (32) extends out of the top through area of ​​the side cavity (21), and a locking nut (321) is adapted to be installed at the upper end of the stud (32).

3. A fixture for lithium battery processing according to claim 1, characterized in that: The pressure adjustment component (4) includes a guide post (41) and a first spring block (42). The pressure plate (2) and the first spring block (42) form a gap with the table surface of the fixture (1). The guide post (41) is fixedly connected to the pressure plate (2). The guide post (41) passes through the pressure plate (2) and the first spring block (42) and extends downward until it passes through the lower end of the fixture (1).

4. A fixture for lithium battery processing according to claim 3, characterized in that: Two sets of guide posts (41) and first spring blocks (42) are symmetrically arranged. A rectangular plate (43) is fixedly connected to the lower end of the two sets of guide posts (41). A toggle rod (44) is abutted at the upper end of the rectangular plate (43). A second spring (45) is fixedly connected to the toggle rod (44). The other end of the second spring (45) is fixedly connected to the bottom surface of the fixture table (1). An L-shaped adapter block (441) extends from one end of the toggle rod (44). The adapter block (441) extends upward into the rectangular cavity opened in the fixture table (1). A rotating shaft (46) is rotatably installed in the rectangular cavity. The adapter block (441) is fixedly connected to the rotating shaft (46).

5. A fixture for lithium battery processing according to claim 1, characterized in that: The auxiliary limiting component (5) includes several sets of positioning rods (51). Each set of positioning rods (51) is symmetrically fixedly connected to the two side walls of the fixture table (1). Each set of positioning rods (51) has a spacing rod (52) extending from the top of the top towards the middle area of ​​the fixture table (1). A rectangular cavity locking block (53) is fitted on the spacing rod (52). A screw cavity is opened on the top of the locking block (53). A locking stud (531) is arranged in the screw cavity. A stop block (54) is also fixedly connected to one side of the locking block (53).

6. A fixture for lithium battery processing according to claim 5, characterized in that: The clamping end face of the abutment (54) is fitted with a rubber partition (541) using Velcro.

7. A fixture for lithium battery processing according to claim 5, characterized in that: The fixture table (1) has support legs (11) fixedly connected to the four corners of its bottom.

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