Adjustable tab welding clamp for battery production

Abstract

The utility model discloses an adjustable tab welding fixture for battery production. The adjustable tab welding fixture comprises a fixture main body and supporting legs, according to the utility model, the pressure sensor, the upper pressing plate and the side clamping plate are adopted, the upper pressing plate and the side clamping plate can be used for respectively fixing a core package and a tab, and the contact plates at the bottoms of the upper pressing plate and the side clamping plate are firstly contacted with the core package or the tab during extrusion; then along with continuous extrusion, the extrusion force applied to the pressure sensor by the contact plate is gradually increased, and when the pressure sensor detects that the pressure value reaches a preset range, the first electric push rod stops running, so that the applied pressure is in a proper interval; the device is simple in structure and convenient to use, core package deformation or tab bending breakage caused by too large pressure is avoided, meanwhile, the situation that the core package and the tabs cannot be effectively fixed due to too small pressure is avoided, the overall use effect can be effectively improved through cooperative use of multiple groups of structures, and the device has the advantages of being good in fixing effect and small in fixing damage.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and more specifically, to an adjustable tab welding fixture for battery production. Background Technology

[0002] In the manufacturing process of lithium-ion batteries, ultrasonic welding of the cell tabs is an extremely important step that directly affects the quality and performance of lithium-ion batteries. Therefore, in order to ensure welding accuracy and improve welding efficiency, welding fixtures are used to clamp and fix the cell tabs in this step.

[0003] The existing public technology application number is CN202320794030.9, which describes a tab clamp and a welding device using the tab clamp. This utility model sets up a tab clamping structure and adjusts the relative positions of the first clamping plate and the second clamping plate, so that the tabs can be pressed into different pre-welding positions according to different battery cell pack models and quantities. It has strong compatibility and can reduce storage pressure. By adjusting the clamping gap, the clamping effect on tabs with different layers can be strengthened, effectively avoiding technical problems such as damage to the tabs during welding and poor welding, and improving the welding quality of the battery cell pack.

[0004] However, the aforementioned patent still has certain drawbacks in its use: although it can clamp and fix the tabs by the relative movement of two sets of clamping plates, the clamping plates need to be manually operated. Therefore, the clamping strength of the clamping plates on the tabs cannot be effectively controlled. When the clamping force is too small, the tabs are prone to falling off, while when the clamping force is too large, the tabs are prone to bending and damage, which will affect subsequent battery production operations. Furthermore, continuous manual operation will increase the labor intensity of personnel, resulting in time-consuming and labor-intensive operations. Moreover, the fixation effect of using only the cover plate to accommodate and fix the battery cell is very limited. If the battery cell does not contact the cover plate, it will cause the battery cell to move during subsequent tab welding, which will affect the welding quality of the tabs. Overall, the use effect is not ideal.

[0005] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an adjustable electrode welding fixture for battery production, which has the advantages of good fixing effect, minimal fixing damage, and labor-saving operation, thereby solving the problems mentioned in the background technology.

[0007] To achieve the advantages of good fixation effect, minimal fixation damage, and labor-saving operation, the specific technical solution adopted by this utility model is as follows:

[0008] An adjustable tab welding fixture for battery production includes a fixture body and legs. Several sets of first electric push rods are symmetrically installed around the top of the fixture body. An upper pressure plate is fixedly installed at the bottom of the first electric push rod. A bearing plate is symmetrically welded to the side of the fixture body. Several sets of third electric push rods are installed on the surface of the bearing plate. A side clamping plate is installed at the output end of the third electric push rod. A contact plate is provided at the bottom of the upper pressure plate and the bottom of the side clamping plate. A pressure sensor is installed between the contact plate and the upper pressure plate and the side clamping plate. A slot is opened on the surface of the upper pressure plate and the side clamping plate for the installation of the pressure sensor.

[0009] Furthermore, the fixture body has symmetrical adjustment slots on both sides of the bottom end, a second electric push rod is installed on one side of the adjustment slot, a guide block is installed at the output end of the second electric push rod, the guide block is slidably connected to the adjustment slot, and a support frame is welded to the top of the guide block.

[0010] Furthermore, a placement slot is provided at the middle of the top of the support frame.

[0011] Furthermore, the dimensions of the upper pressure plate are the same as the dimensions of the placement groove.

[0012] Furthermore, a welding port is provided on the side of the fixture body.

[0013] Furthermore, support legs are symmetrically installed on both sides of the bottom of the fixture body.

[0014] Furthermore, a controller is provided on one side of the fixture body.

[0015] Furthermore, guide grooves are symmetrically provided at both ends of the side of the fixture body, and the side clamping plate is slidably connected to the guide grooves.

[0016] Compared with the prior art, this utility model provides an adjustable electrode welding fixture for battery production, which has the following advantages:

[0017] (1) This utility model adopts a pressure sensor, an upper pressure plate, and a side clamp. The upper pressure plate and the side clamp can fix the core package and the electrode tab respectively. During the extrusion, the contact plate at the bottom of the upper pressure plate and the side clamp will first contact the core package or the electrode tab. Then, as the extrusion continues, the extrusion force applied to the pressure sensor by the contact plate will gradually increase. When the pressure sensor detects that the pressure value reaches the preset range, the first electric push rod will stop running, thereby ensuring that the pressure applied is within a suitable range, avoiding excessive pressure that may cause deformation of the core package or bending and breakage of the electrode tab, and avoiding insufficient pressure that may cause the core package and the electrode tab to be unable to be effectively fixed, affecting the subsequent welding effect. The device can effectively improve the overall use effect through the use of multiple sets of structures, which is convenient for better promotion. It has the advantages of good fixing effect and small fixing damage.

[0018] (2) By adopting a second electric push rod, the entire support frame can be moved outward by extending the second electric push rod during actual use. At this time, the personnel can put the core package into the placement slot or remove the processed core package from the fixture body, which is convenient for the personnel to operate the core package. When the core package is fixed, the upper pressure plate can be moved down by pushing out the first electric push rod above, thereby squeezing and fixing the core package. It does not require excessive manual intervention from the personnel, which can effectively reduce the labor intensity of the personnel, liberate productivity, and has the advantage of labor-saving operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the adjustable electrode welding fixture for battery production proposed in this utility model;

[0021] Figure 2 This is a structural schematic diagram of the support frame of this utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the upper pressure plate of this utility model;

[0023] Figure 4 This is a partial structural schematic diagram of the side clamp of this utility model.

[0024] In the picture:

[0025] 1. Fixture body; 2. Bearing frame; 3. Guide block; 4. Placement slot; 5. Upper pressure plate; 6. First electric push rod; 7. Guide slot; 8. Second electric push rod; 9. Adjustment slot; 10. Third electric push rod; 11. Bearing plate; 12. Side clamping plate; 13. Contact plate; 14. Pressure sensor; 15. Weld joint; 16. Support leg. Detailed Implementation

[0026] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0027] According to an embodiment of the present invention, an adjustable tab welding fixture for battery production is provided.

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4 As shown, the adjustable tab welding fixture for battery production according to an embodiment of the present invention includes a fixture body 1 and support legs 16. Several sets of first electric push rods 6 are symmetrically installed around the top of the fixture body 1. An upper pressure plate 5 is fixedly installed at the bottom of the first electric push rods 6. A bearing plate 11 is symmetrically welded to the side of the fixture body 1. Several sets of third electric push rods 10 are installed on the surface of the bearing plate 11. A side clamping plate 12 is installed at the output end of the third electric push rod 10. A contact plate 13 is provided at the bottom of the upper pressure plate 5 and the bottom of the side clamping plate 12. A pressure sensor 14 is installed between the contact plate 13 and the upper pressure plate 5 and the side clamping plate 12. A slot for installing the pressure sensor 14 is opened on the surface of the upper pressure plate 5 and the side clamping plate 12. The pressure sensor 14 is a common sensor structure, so it will not be described in detail. Due to the different types of core packages, the distribution position of the tabs will also be different. Therefore, the position and number of the welding joint 15 and the side clamping plate 12 can be adjusted accordingly, which will not be described in detail here.

[0029] In one embodiment, the clamp body 1 has symmetrical adjustment grooves 9 on both sides of the bottom end. A second electric push rod 8 is installed on one side of the adjustment groove 9. A guide block 3 is installed at the output end of the second electric push rod 8. The guide block 3 is slidably connected to the adjustment groove 9. A support frame 2 is welded to the top of the guide block 3.

[0030] In one embodiment, a placement groove 4 is provided at the top center of the support frame 2. The placement groove 4 is provided for placing the core package to facilitate subsequent welding operations.

[0031] In one embodiment, the upper pressure plate 5 has the same dimensions as the placement groove 4. The upper pressure plate 5 is designed to fully compress and fix the core package placed inside the placement groove 4, ensuring stability during welding.

[0032] In one embodiment, a welding port 15 is provided on the side of the fixture body 1. The welding port 15 is provided to facilitate the welding operation of the electrode tab. The welding device used for welding the electrode tab can be the same as the welding device used in the prior art application number CN202320794030.9, "Electric Tab Fixture and Welding Device Using the Electrode Tab Fixture".

[0033] In one embodiment, support legs 16 are symmetrically installed on both sides of the bottom of the clamp body 1. The support legs 16 can fix the entire device, which is convenient for subsequent use.

[0034] In one embodiment, a controller is provided on one side of the fixture body 1. The controller is set up to control the internal structure of the fixture, such as electric push rods, pressure sensors 14, etc. Since there are various types of controllers and the application technology is mature, personnel can select according to their needs and implement them through programming. This will not be elaborated on further here.

[0035] In one embodiment, guide grooves 7 are symmetrically provided at both ends of the side of the clamp body 1, and the side clamping plate 12 is slidably connected to the guide grooves 7. The guide grooves 7 are provided to restrict the movement trajectory of the side clamping plate 12, ensuring that it can move straight up and down and avoid tilting.

[0036] Working Principle: In actual use, the extension of the second electric push rod 8 moves the entire support frame 2 outward, allowing personnel to place the core pack into the placement slot 4. Then, the return of the second electric push rod 8 moves the core pack into the clamp body 1. The push-out of the first electric push rod 6 then moves the upper pressure plate 5 downward, thus squeezing and fixing the core pack. Simultaneously, the tabs are exposed through the welding joint 15. The relative movement of the third electric push rod 10 moves the side clamping plates 12 closer or further apart, adjusting the clamping gap to enhance the clamping effect on tabs with different layers. This allows the tabs to be pressed into different pre-welding positions according to the battery core pack model and quantity. This invention has strong compatibility, reduces storage pressure, is suitable for industrial application, and effectively avoids tab welding. This device addresses technical issues such as damage during operation and poor welding, improving the welding quality of the battery cell pack. During extrusion, the contact plate 13 at the bottom of the upper pressure plate 5 and the side clamping plate 12 initially contacts the cell pack or electrode tabs. As extrusion continues, the extrusion force applied by the contact plate 13 to the pressure sensor 14 gradually increases. When the pressure sensor 14 detects that the pressure value reaches the preset range, the first electric push rod 6 stops operating, thus ensuring that the applied pressure is within a suitable range. This avoids excessive pressure causing deformation of the cell pack or bending and breakage of the electrode tabs, while also preventing insufficient pressure from causing the cell pack and electrode tabs to be ineffectively fixed, affecting the subsequent welding effect. The device, through the coordinated use of multiple structures, can effectively improve the overall performance and facilitate wider promotion. The device as a whole has the advantages of good fixing effect, minimal fixing damage, and labor-saving operation.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable tab welding fixture for battery production, comprising a fixture body (1) and legs (16), characterized in that, Several sets of first electric push rods (6) are symmetrically installed around the top of the fixture body (1). An upper pressure plate (5) is fixedly installed at the bottom of the first electric push rod (6). A bearing plate (11) is symmetrically welded to the side of the fixture body (1). Several sets of third electric push rods (10) are installed on the surface of the bearing plate (11). A side clamping plate (12) is installed at the output end of the third electric push rod (10). A contact plate (13) is provided at the bottom of the upper pressure plate (5) and the bottom of the side clamping plate (12). A pressure sensor (14) is installed between the contact plate (13) and the upper pressure plate (5) and the side clamping plate (12). A slot is opened on the surface of the upper pressure plate (5) and the side clamping plate (12) for the installation of the pressure sensor (14).

2. The adjustable tab welding fixture for battery production according to claim 1, characterized in that, The fixture body (1) has symmetrical adjustment grooves (9) on both sides of the bottom end. A second electric push rod (8) is installed on one side of the adjustment groove (9). A guide block (3) is installed at the output end of the second electric push rod (8). The guide block (3) is slidably connected to the adjustment groove (9). A bearing frame (2) is welded to the top of the guide block (3).

3. The adjustable tab welding fixture for battery production according to claim 2, characterized in that, The support frame (2) has a placement slot (4) at the top center.

4. The adjustable tab welding fixture for battery production according to claim 1, characterized in that, The upper pressure plate (5) has the same dimensions as the placement groove (4).

5. The adjustable tab welding fixture for battery production according to claim 1, characterized in that, The fixture body (1) has a welding port (15) on its side.

6. The adjustable tab welding fixture for battery production according to claim 1, characterized in that, The clamp body (1) has legs (16) symmetrically installed on both sides of its bottom.

7. The adjustable tab welding fixture for battery production according to claim 1, characterized in that, A controller is provided on one side of the fixture body (1).

8. The adjustable tab welding fixture for battery production according to claim 1, characterized in that, The clamp body (1) has guide grooves (7) symmetrically opened at both ends of the side, and the side clamping plate (12) is slidably connected to the guide grooves (7).

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