Battery tab fixing and welding fixture

Abstract

The present invention provides a battery tab fixing and welding fixture, which includes a battery cell support plate. At least one end of the battery cell support plate is provided with an upper clamping mechanism and a lower clamping mechanism. The upper clamping mechanism includes a first mounting seat and a first lifting seat. The battery cell support plate is provided with a first reset mechanism that always makes the first mounting seat tend to move towards the center of the battery cell support plate. The first mounting seat is provided with a second reset mechanism that always makes the first lifting seat tend to move downward. The first mounting seat is provided with a battery cell fixing component, and the first lifting seat is provided with an upper tab pressing rod. The lower clamping mechanism includes a second mounting seat and a second lifting seat. The second lifting seat is provided with a lower tab pressing rod corresponding to the upper tab pressing rod. The present invention can supply tabs in advance, directly perform welding during welding, shorten the production cycle, accelerate the process rhythm of the entire equipment, the battery cell and the tabs are not easily damaged, avoid waste of resources, and reduce the production cost of the enterprise.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production, and particularly to a battery tab fixing and welding jig. Background Art

[0002] A lithium battery is a type of battery with a lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. In the production and manufacturing process of lithium batteries, it is necessary to weld the tabs to the battery. Currently, in the tab feeding method used in the lithium battery tab welding equipment process, the tabs are fed after the battery cells are placed in place for welding. The production cycle is too long, which affects the process rhythm of the entire equipment, resulting in low equipment working efficiency and insufficient production capacity. At the same time, the existing tab welding jigs mainly fix the battery cells and tabs by mechanical pressing. The battery cells and tabs are easily damaged, resulting in a low yield rate, causing waste of resources, and increasing the production cost of enterprises. Summary of the Invention

[0003] Aiming at the deficiencies existing in the prior art, the present invention provides a battery tab fixing and welding jig, which can supply the tabs in advance and can directly perform welding during welding, shortening the production cycle, accelerating the process rhythm of the entire equipment, improving the working efficiency of the equipment, increasing the production capacity. At the same time, the battery cells and tabs are not easily damaged, the yield rate is high, avoiding waste of resources, and reducing the production cost of enterprises.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A battery tab fixing and welding jig includes a battery cell support plate. At least one end of the battery cell support plate is provided with an upper clamping mechanism and a lower clamping mechanism. The upper clamping mechanism includes a first mounting seat and a first lifting seat arranged on the first mounting seat. A first reset mechanism is provided on the battery cell support plate to always make the first mounting seat tend to move towards the center of the battery cell support plate. A second reset mechanism is provided on the first mounting seat to always make the first lifting seat tend to move downward. On the side of the first mounting seat facing the center of the battery cell support plate, a battery cell fixing component for fixing the battery cell is provided. The battery cell fixing component includes a battery cell pressing rod for pressing the battery cell. A third reset mechanism is provided on the first mounting seat to always make the battery cell pressing rod tend to move upward. A pressing block for restricting the upward movement of the battery cell pressing rod is provided on the first lifting seat. On the side of the first lifting seat away from the center of the battery cell support plate, an upper tab pressing rod for pressing the upper surface of the tab is provided. The lower clamping mechanism includes a second mounting seat and a second lifting seat arranged on the second mounting seat. A fourth reset mechanism is provided on the second mounting seat to always make the second lifting seat tend to move upward. A lower tab pressing rod corresponding to the upper tab pressing rod is provided on the second lifting seat. An upper clamping opening mechanism is provided above the upper clamping mechanism, and a lower clamping opening mechanism is provided below the lower clamping mechanism.

[0006] As a preferred solution, the upper clamping mechanism includes a first air cylinder for controlling the upward movement of the first lifting seat and a second air cylinder for controlling the first air cylinder to move away from the center of the cell tray. A first convex block extending toward the center of the cell tray is provided on the first lifting seat, and a first hook corresponding to the first convex block is provided on the movable rod of the first air cylinder.

[0007] As a preferred solution, the lower clamping mechanism includes a third air cylinder for controlling the downward movement of the second lifting seat. A second convex block extending toward the center of the cell tray is provided on the second lifting seat, and a second hook corresponding to the second convex block is provided on the movable rod of the third air cylinder.

[0008] As a preferred solution, both the upper tab pressing rod and the lower tab pressing rod are provided with fixing holes extending vertically. Threaded holes corresponding to the fixing holes are provided on both the first lifting seat and the second lifting seat. The upper tab pressing rod and the lower tab pressing rod are respectively connected to the first lifting seat and the second lifting seat by screws passing through the fixing holes and screwing with the threaded holes.

[0009] As a preferred solution, sliding seats are fixedly installed on the front and rear sides of the cell tray. A sliding groove is provided on the sliding seat. Linear sliding rails are fixedly installed at the lower ends of the front and rear sides of the first mounting seat. The first mounting seat is movably installed on the cell tray through the cooperation of the linear sliding rails and the sliding grooves. The first reset mechanism is a tension spring. A first limiting member is provided on the cell tray, and a second limiting member is provided on the first mounting seat. Both ends of the tension spring are respectively connected to the first limiting member and the second limiting member. A limiting block for blocking the movement of the linear sliding rail is provided on the cell tray.

[0010] As a preferred solution, a first mounting hole horizontally penetrating the left and right sides of the first mounting seat is provided on the first mounting seat. A first guiding column vertically arranged is provided in the first mounting hole. The first lifting seat is slidably connected to the first guiding column through a linear bearing. The second reset mechanism is a first compression spring. The upper end of the first compression spring abuts against the upper surface of the inner side of the first mounting hole, and the lower end abuts against the upper surface of the first lifting seat.

[0011] As a preferred solution, a support plate extending toward the center of the cell tray is provided on the first mounting seat. There are two support plates. Guide holes are provided on both support plates. The cell fixing assembly further includes a pressure plate for mounting the cell pressing rod. There are two cell pressing rods. The upper ends of the two cell pressing rods are mounted on the pressure plate, and the lower ends extend downward through the guide holes. The third reset mechanism is a buffer spring. The buffer spring is sleeved on the outside of the cell pressing rod. Both ends of the buffer spring respectively abut against the lower surface of the pressure plate and the upper surface of the support plate.

[0012] As a preferred solution, a second mounting hole horizontally penetrating through the left and right sides of the second mounting seat is provided on the second mounting seat. A second guiding column vertically arranged is provided in the second mounting hole. The second lifting seat is slidably connected to the second guiding column through a linear bearing. The fourth reset mechanism is a second pressure spring. The upper end of the second pressure spring abuts against the lower surface of the second lifting seat, and the lower end abuts against the lower surface inside the second mounting hole.

[0013] As a preferred solution, upper clamping mechanisms, upper clip-opening mechanisms, lower clamping mechanisms, and lower clip-opening mechanisms are provided at both the left and right ends of the battery cell tray.

[0014] As a preferred solution, a battery cell positioning plate for positioning the battery cell is provided on the battery cell tray.

[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, 1. By providing the upper clamping mechanism and the lower clamping mechanism, the battery cell is fixed on the battery cell tray, and the ear tabs are clamped and fixed at both ends of the battery cell, so that the ear tabs can be supplied in advance, and direct welding can be carried out during welding, shortening the production cycle, accelerating the process beat of the entire equipment, improving the working efficiency of the equipment, and increasing the production capacity; 2. By adopting the pressing methods of the first pressure spring, the second pressure spring, and the buffer spring, elastic contact between the battery cell pressing rod, the upper ear tab pressing rod, and the lower ear tab pressing rod and the battery cell and the ear tabs is realized, which can effectively protect the battery cell and the ear tabs from being easily damaged, with a high yield rate, avoiding waste of resources, and reducing the production cost of the enterprise.

[0016] To more clearly illustrate the structural features, technical means, and the specific purposes and functions achieved by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the schematic assembly structure diagram of the embodiment of the present invention;

[0018] Figure 2 is the front structure diagram of the embodiment of the present invention;

[0019] Figure 3 is the structural diagram of the upper clamping assembly of the present invention;

[0020] Figure 4 is the right view of the upper clamping assembly of the present invention;

[0021] Figure 5 is the structural diagram of the lower clamping assembly of the present invention;

[0022] Figure 6 is the right view of the lower clamping assembly of the present invention.

[0023] Description of the Reference Numerals in the Drawings:

[0024] 10 - Battery cell support plate; 11 - Battery cell positioning plate; 12 - Limit block;

[0025] 13 - Slide base; 14 - First limiting member; 20 - First mounting seat;

[0026] 201 - Support plate; 21 - First mounting hole; 22 - First lifting seat;

[0027] 23 - Upper tab pressing rod; 24 - Pressing block; 241 - First convex block;

[0028] 25 - First guiding column; 251 - Linear bearing; 26 - First pressure spring;

[0029] 27 - Linear slide rail; 28 - Tension spring; 29 - Second limiting member;

[0030] 30 - Pressing plate; 31 - Battery cell pressing rod; 32 - Buffer spring;

[0031] 40 - First cylinder; 41 - Second cylinder; 42 - First hook;

[0032] 50 - Second mounting seat; 51 - Second mounting hole; 52 - Second lifting seat;

[0033] 53 - Lower tab pressing rod; 54 - Second convex block; 55 - Second guiding column;

[0034] 56 - Second pressure spring; 60 - Third cylinder; 61 - Second hook;

[0035] 70 - Battery cell; 71 - Tab. Detailed implementation manners

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0037] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] As Figure 1-6 shown, a battery tab fixing and welding fixture includes a battery cell support plate 10. At least one end of the battery cell support plate 10 is provided with an upper clamping mechanism and a lower clamping mechanism. The upper clamping mechanism includes a first mounting seat 20 and a first lifting seat 22 arranged on the first mounting seat 20. The battery cell support plate 10 is provided with a first reset mechanism that makes the first mounting seat 20 always tend to move towards the center of the battery cell support plate 10. The first mounting seat 20 is provided with a second reset mechanism that makes the first lifting seat 22 always tend to move downward. One side of the first mounting seat 20 facing the center of the battery cell support plate 10 is provided with a battery cell fixing component for fixing the battery cell 70. The battery cell fixing component includes a battery cell pressing rod 31 for pressing the battery cell 70. The first mounting seat 20 is provided with a third reset mechanism that makes the battery cell pressing rod 31 always tend to move upward. The first lifting seat 22 is provided with a pressing block 24 for restricting the upward movement of the battery cell pressing rod 31. One side of the first lifting seat 22 away from the center of the battery cell support plate 10 is provided with an upper tab pressing rod 23 for pressing the upper surface of the tab 71. The lower clamping mechanism includes a second mounting seat 50 and a second lifting seat 52 arranged on the second mounting seat 50. The second mounting seat 50 is provided with a fourth reset mechanism that makes the second lifting seat 52 always tend to move upward. The second lifting seat 52 is provided with a lower tab pressing rod 53 corresponding to the upper tab pressing rod 23. An upper clamping release mechanism is arranged above the upper clamping mechanism, and a lower clamping release mechanism is arranged below the lower clamping mechanism.

[0039] In this embodiment, the upper clamping release mechanism includes a first cylinder 40 for controlling the upward movement of the first lifting seat 22 and a second cylinder 41 for controlling the first cylinder 40 to move away from the center of the battery cell support plate 10. The second cylinder 41 is a slide table cylinder. The first lifting seat 22 is provided with a first convex block 241 extending out on the side facing the center of the battery cell support plate 10. The movable rod of the first cylinder 40 is provided with a first hook 42 corresponding to the first convex block 241.

[0040] The lower clamping mechanism includes a third air cylinder 60 for controlling the downward movement of the second lifting seat 52. A second convex block 54 extending toward the center of the battery cell support plate 10 is provided on the second lifting seat 52. A second hook 61 corresponding to the second convex block 54 is provided on the movable rod of the third air cylinder 60.

[0041] Both the upper tab pressing rod 23 and the lower tab pressing rod 53 are provided with fixing holes extending vertically. Threaded holes corresponding to the fixing holes are provided on the first lifting seat 22 and the second lifting seat 52 respectively. The upper tab pressing rod 23 and the lower tab pressing rod 53 are respectively connected to the first lifting seat 22 and the second lifting seat 52 by screwing screws through the fixing holes and the threaded holes.

[0042] Sliding seats 13 are fixedly installed on the front and rear sides of the battery cell support plate 10. Chute grooves are provided on the sliding seats 13. Linear slide rails 27 are fixedly installed at the lower ends of the front and rear sides of the first mounting seat 20. The first mounting seat 20 is movably installed on the battery cell support plate 10 through the cooperation of the linear slide rails 27 and the chute grooves. The first reset mechanism is a tension spring 28. A first limiting member 14 is provided on the battery cell support plate 10. A second limiting member 29 is provided on the first mounting seat 20. Both ends of the tension spring 28 are respectively connected to the first limiting member 14 and the second limiting member 29. Both the first limiting member 14 and the second limiting member 29 are screw rods. A limiting block 12 for blocking the movement of the linear slide rails 27 is provided on the battery cell support plate 10.

[0043] A first mounting hole 21 penetrating through the left and right sides of the first mounting seat 20 horizontally is provided on the first mounting seat 20. A first guiding column 25 arranged vertically is provided in the first mounting hole 21. The first lifting seat 22 is slidably connected to the first guiding column 25 through a linear bearing 251. The second reset mechanism is a first compression spring 26. The upper end of the first compression spring 26 abuts against the upper surface of the inner side of the first mounting hole 21, and the lower end abuts against the upper surface of the first lifting seat 22.

[0044] A support plate 201 extending towards the center of the battery cell tray 10 is provided on the first mounting base 20. There are two support plates 201, and guide holes are provided on both of the two support plates 201. The battery cell fixing assembly further includes a pressure plate 30 for mounting the battery cell pressing rod 31. There are two battery cell pressing rods 31. The upper ends of the two battery cell pressing rods 31 are mounted on the pressure plate 30, and the lower ends extend downward through the guide holes. The third reset mechanism is a buffer spring 32. The buffer spring 32 is sleeved on the outside of the battery cell pressing rod 31. The two ends of the buffer spring 32 are respectively in contact with the lower surface of the pressure plate 30 and the upper surface of the support plate 201. During the working process, when the first convex block 241 on the first lifting seat 22 is not affected by external forces, the elastic force of the first pressure spring 26 is greater than the elastic force of the buffer spring 32, so that the first lifting seat 22 drives the pressing block 24 downward to push the pressure plate 30 to move downward against the elastic force of the buffer spring 32, and the lower end of the battery cell pressing rod 31 presses against the upper surface of the battery cell 70, thereby fixing the battery cell 70.

[0045] A second mounting hole 51 penetrating through the left and right sides of the second mounting base 50 horizontally is provided on the second mounting base 50. A second guiding column 55 arranged vertically is provided in the second mounting hole 51. The second lifting seat 52 is slidably connected with the second guiding column 55 through a linear bearing 251. The fourth reset mechanism is a second pressure spring 56. The upper end of the second pressure spring 56 is in contact with the lower surface of the second lifting seat 52, and the lower end is in contact with the lower surface inside the second mounting hole 51.

[0046] Upper clamping mechanisms, upper clip-opening mechanisms, lower clamping mechanisms and lower clip-opening mechanisms are provided at both the left and right ends of the battery cell tray 10.

[0047] A battery cell positioning plate 11 for positioning the battery cell 70 is provided on the battery cell tray 10.

[0048] The working principle of the present invention is as follows: When the third cylinder 60 contracts, it drives the second hook 61 and the second bump 54 to move downward, causing the second lifting seat 52 to drive the lower tab pressing rod 53 to move downward along the second guiding column 55 against the pressure of the second compression spring 56. At the same time, when the first cylinder 40 contracts, it drives the first hook 42 and the first bump 241 to move upward, causing the first lifting seat 22 to drive the upper tab pressing rod 23 to move upward along the first guiding column 25 against the pressure of the first compression spring 26. The pressure of the buffer spring 32 is released, pushing the pressure plate 30 to drive the cell pressing rod 31 to move upward. When the second cylinder 41 contracts, it drives the first cylinder 40 and the first hook 42 to move away from the center of the cell tray 10. The first hook 42 drives the first bump 241 to move away from the center of the cell tray 10 against the pulling force of the tension spring 28. Thus, the first mounting seat 20 moves away from the center of the cell tray 10 along the sliding groove on the sliding seat 13 through the linear slide rail 27. The manipulator places the cell 70 on the cell positioning plate 11. When the second cylinder 41 expands, it pushes the first cylinder 40 and the first hook 42 to move towards the center of the cell tray 10. The first mounting seat 20 moves towards the center of the cell tray 10 under the action of the tension spring 28 and returns to the initial position. The manipulator places the tab protection sheets at both left and right ends of the cell 70. When the third cylinder 60 expands, it drives the second hook 61 to move upward. The second lifting seat 52 moves upward along the second guiding column 55 under the action of the second compression spring 56, and the lower tab pressing rod 53 presses against the lower surface of the tab protection sheet. At the same time, when the first cylinder 40 expands, it drives the first hook 42 to move downward. The first lifting seat 22 moves downward along the first guiding column 25 under the action of the first compression spring 26, and the upper tab pressing rod 23 presses against the upper surface of the tab protection sheet, thereby fixing the tab protection sheet. The elastic force of the first compression spring 26 is greater than that of the buffer spring 32, so that the first lifting seat 22 drives the pressing block 24 downward to push the pressure plate 30 to move downward against the elastic force of the buffer spring 32, and the lower end of the cell pressing rod 31 presses against the upper surface of the cell 70, thereby fixing the cell 70. The welding manipulator welds the tab protection sheets to the cell 70. Repeat the contraction of the third cylinder 60 and the first cylinder 40. The upper tab pressing rod 23 moves upward, and the lower tab pressing rod 53 moves downward. The manipulator places the tabs 71 at both left and right ends of the cell 70. When the third cylinder 60 and the first cylinder 40 expand, the upper tab pressing rod 23 moves downward, and the lower tab pressing rod 53 moves upward, thereby fixing the tabs 71. The welding manipulator welds the tabs 71 to the cell 70 to complete the welding operation.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made to the above embodiments according to the technical reality of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A battery tab fixing and welding jig, characterized in that, it includes a battery cell support plate, at least one end of the battery cell support plate is provided with an upper clamping mechanism and a lower clamping mechanism, the upper clamping mechanism includes a first mounting seat and a first lifting seat arranged on the first mounting seat, a first reset mechanism for making the first mounting seat always tend to move towards the center of the battery cell support plate is arranged on the battery cell support plate, a second reset mechanism for making the first lifting seat always tend to move downward is arranged on the first mounting seat, a battery cell fixing component for fixing the battery cell is arranged on the side of the first mounting seat facing the center of the battery cell support plate, the battery cell fixing component includes a battery cell pressing rod for pressing the battery cell, a third reset mechanism for making the battery cell pressing rod always tend to move upward is arranged on the first mounting seat, a pressing block for restricting the upward movement of the battery cell pressing rod is arranged on the first lifting seat, an upper tab pressing rod for pressing the upper surface of the tab is arranged on the side of the first lifting seat away from the center of the battery cell support plate, the lower clamping mechanism includes a second mounting seat and a second lifting seat arranged on the second mounting seat, a fourth reset mechanism for making the second lifting seat always tend to move upward is arranged on the second mounting seat, a lower tab pressing rod corresponding to the upper tab pressing rod is arranged on the second lifting seat, an upper clamping release mechanism is arranged above the upper clamping mechanism, and a lower clamping release mechanism is arranged below the lower clamping mechanism.

2. The battery tab fixing and welding jig according to claim 1, characterized in that, the upper clamping release mechanism includes a first air cylinder for controlling the upward movement of the first lifting seat and a second air cylinder for controlling the first air cylinder to move away from the center of the battery cell support plate, a first convex block extending outwards on the side facing the center of the battery cell support plate is arranged on the first lifting seat, and a first hook corresponding to the first convex block is arranged on the movable rod of the first air cylinder.

3. The battery tab fixing and welding jig according to claim 1, characterized in that, the lower clamping release mechanism includes a third air cylinder for controlling the downward movement of the second lifting seat, a second convex block extending outwards on the side facing the center of the battery cell support plate is arranged on the second lifting seat, and a second hook corresponding to the second convex block is arranged on the movable rod of the third air cylinder.

4. The battery tab fixing and welding jig according to claim 1, characterized in that, the upper tab pressing rod and the lower tab pressing rod are both provided with fixing holes extending vertically, threaded holes corresponding to the fixing holes are arranged on the first lifting seat and the second lifting seat, and the upper tab pressing rod and the lower tab pressing rod are respectively connected to the first lifting seat and the second lifting seat by screwing screws through the fixing holes and the threaded holes.

5. The battery tab fixing and welding jig according to claim 1, characterized in that, Sliding seats are fixedly installed on the front and rear sides of the battery cell carrier plate. A chute is provided on the sliding seat. Linear sliding rails are fixedly installed at the lower ends of the front and rear sides of the first mounting seat. The first mounting seat is movably installed on the battery cell carrier plate through the cooperation of the linear sliding rails and the chute. The first reset mechanism is a tension spring. A first limiting member is provided on the battery cell carrier plate, and a second limiting member is provided on the first mounting seat. The two ends of the tension spring are respectively connected to the first limiting member and the second limiting member. A limiting block for blocking the movement of the linear sliding rail is provided on the battery cell carrier plate.

6. The battery tab fixing and welding jig according to claim 1, characterized in that a first mounting hole horizontally penetrating the left and right sides of the first mounting seat is provided on the first mounting seat. A first guiding column vertically arranged is provided in the first mounting hole. The first lifting seat is slidably connected to the first guiding column through a linear bearing. The second reset mechanism is a first compression spring. The upper end of the first compression spring abuts against the upper surface inside the first mounting hole, and the lower end abuts against the upper surface of the first lifting seat.

7. The battery tab fixing and welding jig according to claim 1, characterized in that a support plate extending towards the center of the battery cell carrier plate is provided on the first mounting seat. There are two support plates. Guide holes are provided on both support plates. The battery cell fixing assembly further includes a pressure plate for installing the battery cell pressing rod. There are two battery cell pressing rods. The upper ends of the two battery cell pressing rods are installed on the pressure plate, and the lower ends extend downward through the guide holes. The third reset mechanism is a buffer spring. The buffer spring is sleeved outside the battery cell pressing rod. The two ends of the buffer spring respectively abut against the lower surface of the pressure plate and the upper surface of the support plate.

8. The battery tab fixing and welding jig according to claim 1, characterized in that a second mounting hole horizontally penetrating the left and right sides of the second mounting seat is provided on the second mounting seat. A second guiding column vertically arranged is provided in the second mounting hole. The second lifting seat is slidably connected to the second guiding column through a linear bearing. The fourth reset mechanism is a second compression spring. The upper end of the second compression spring abuts against the lower surface of the second lifting seat, and the lower end abuts against the lower surface inside the second mounting hole.

9. The battery tab fixing and welding jig according to claim 1, characterized in that upper clamping mechanisms, upper unclamping mechanisms, lower clamping mechanisms and lower unclamping mechanisms are provided at both the left and right ends of the battery cell carrier plate.

10. The battery tab fixing and welding jig according to claim 1, characterized in that a battery cell positioning plate for positioning the battery cell is provided on the battery cell carrier plate.

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