Lithium ion battery tab welding tool

Abstract

The lithium ion battery tab welding tool comprises a welding seat and a pressure head assembly, a supporting platform is arranged on the welding seat and used for placing a battery cell, the pressure head assembly is detachably installed on the welding seat and used for pressing and holding the battery cell, two positioning openings are formed in the pressure head assembly, and the positioning openings are used for positioning the battery cell. And the two positioning openings are respectively positioned right above two poles on the battery cell and are used for respectively positioning two lugs. According to the utility model, the dislocation phenomenon during the welding of the tabs is avoided, the welding precision is improved, the tabs can be welded in batches, and the welding efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of batteries, and in particular to a welding fixture for lithium-ion battery tabs. Background Technology

[0002] In the current field of lithium-ion polymer battery manufacturing, the tabs, as key components connecting the positive and negative electrodes of the battery cell to the external circuit, directly affect the battery's performance, safety, and production efficiency through their quality and welding process. Tabs are typically composed of a metallic conductor (such as aluminum, nickel, or nickel-plated copper) and a film, used for the positive and negative electrodes of the battery respectively, to ensure stable and efficient current transfer during charging and discharging.

[0003] However, existing battery tab welding processes have the following shortcomings. First, the tabs are prone to misalignment during welding. Misalignment not only leads to welding failure but may also affect the overall structure and performance of the battery, and even pose safety hazards. Second, existing welding technologies struggle to achieve batch welding and fixing between terminals and tabs. In battery production, terminals and tabs typically need to be welded one by one, which is not only time-consuming and labor-intensive but also significantly reduces production efficiency. Utility Model Content

[0004] In view of the above-mentioned problems in existing battery tab welding, this paper aims to provide a lithium-ion battery tab welding fixture with high welding precision and improved production efficiency.

[0005] The specific technical solution is as follows:

[0006] A lithium-ion battery tab welding fixture, comprising:

[0007] A welding socket, wherein the welding socket has a support platform for placing the battery cell;

[0008] A pressure head assembly is detachably mounted on the welding base for pressing the battery cell, and the pressure head assembly has two positioning ports, which are respectively located directly above the two pole posts on the battery cell for positioning the two tabs respectively.

[0009] As a further improvement and optimization of this solution, the distance between the two positioning ports can be adjusted.

[0010] As a further improvement and optimization of this solution, the pressure head assembly includes:

[0011] A pressure plate, which is detachably mounted on the welding base, has an adjustment port on both sides;

[0012] Two clamping plates are slidably installed in the two adjustment ports respectively, and the two clamping plates can slide closer to or further away from each other. The two positioning ports are respectively provided on the two clamping plates.

[0013] As a further improvement and optimization of this solution, the pressure plate is connected to the welding base by at least two buckles, with the two buckles respectively located on both sides of the pressure plate.

[0014] As a further improvement and optimization of this solution, the welding base has at least two guide posts, which are respectively located on both sides of the pressure plate, and the pressure plate can be longitudinally slidably mounted on the two guide posts.

[0015] As a further improvement and optimization of this solution, a spring is fitted on the outside of each guide post, with one end of the spring abutting against the welding seat and the other end abutting against the bottom of the pressure plate.

[0016] As a further improvement and optimization of this solution, the pressure plate has at least two sliding holes, and the two guide posts slide through the two sliding holes respectively.

[0017] As a further improvement and optimization of this solution, the welding socket has a positioning structure for positioning the battery cell.

[0018] As a further improvement and optimization of this solution, the welding socket includes:

[0019] A base plate, the top of which has the supporting platform;

[0020] Two upright plates are mounted on the base plate and located on both sides of the support platform, and the pressure head assembly is detachably mounted between the tops of the two upright plates.

[0021] As a further improvement and optimization of this solution, the positioning structure includes:

[0022] Three positioning blocks are installed on the welding base and arranged along the circumference of the battery cell to position and cooperate with the three sides of the battery cell respectively.

[0023] The positive effects of the above technical solution compared with the existing technology are:

[0024] (1) In the process of processing, the pressure head assembly can be installed on the welding seat and press the battery cell, and then the two tabs can be placed in the two positioning ports respectively so that the two tabs are positioned on the two poles of the battery cell. This not only avoids misalignment during the welding of the tabs and improves the welding accuracy, but also allows for batch welding of the tabs and improves the welding efficiency.

[0025] (2) The distance between the two positioning ports of this utility model can be adjusted. The distance between the two positioning ports can be adjusted according to the position of the two poles on the battery cell to ensure the welding position accuracy between the tab and the pole and improve the welding qualification rate.

[0026] (3) The present invention is provided with guide posts and springs, which can flexibly adjust the contact distance between pole posts and pole ears of different height specifications, thereby improving applicability. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a lithium-ion battery electrode tab welding fixture according to the present invention;

[0028] Figure 2 This is a side view of a lithium-ion battery tab welding fixture according to the present invention.

[0029] Figure 3 This is a top view of a lithium-ion battery tab welding fixture according to the present invention.

[0030] In the attached diagram: 1. Welding base; 2. Pressure head assembly; 3. Guide post; 4. Spring; 5. Positioning structure; 6. Tower buckle; 11. Base plate; 12. Support platform; 13. Vertical plate; 21. Positioning port; 22. Pressure plate; 23. Clamping plate; 51. Positioning block; 221. Adjustment port. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Figure 1 This is a schematic diagram of the structure of a lithium-ion battery electrode tab welding fixture according to the present invention. Figure 2 This is a side view of a lithium-ion battery tab welding fixture according to the present invention. Figure 3 This is a top view of a lithium-ion battery tab welding fixture according to the present invention, as shown below. Figure 1-3 As shown, a preferred embodiment of a lithium-ion battery tab welding fixture is illustrated, including a welding base 1 and a pressure head assembly 2. The welding base 1 has a support platform 12 for placing the battery cell. The pressure head assembly 2 is detachably mounted on the welding base 1 for pressing the battery cell. The pressure head assembly 2 has two positioning ports 21, which are located directly above the two poles on the battery cell for positioning the two tabs respectively.

[0035] In this embodiment, during processing, the pressure head assembly 2 can be installed on the welding base 1 to press and hold the battery cell, and then the two tabs can be placed in the two positioning ports 21 respectively, so that the two tabs are positioned on the two poles of the battery cell respectively. This not only avoids misalignment during tab welding and improves welding accuracy, but also allows for batch welding of the tabs, improving welding efficiency.

[0036] Furthermore, as a preferred embodiment, the distance between the two positioning ports 21 is adjustable. The distance between the two positioning ports 21 can be adjusted according to the position of the two poles on the battery cell to ensure the welding position accuracy between the tab and the pole and improve the welding qualification rate.

[0037] Furthermore, as a preferred embodiment, the pressure head assembly 2 includes a pressure plate 22 and two clamping plates 23. The pressure plate 22 is detachably mounted on the welding base 1. Each side of the pressure plate 22 has an adjustment port 221. The two clamping plates 23 are slidably mounted in the two adjustment ports 221 respectively, and the two clamping plates 23 can slide closer to or further away from each other. Two positioning ports 21 are respectively provided on the two clamping plates 23. When adjusting the distance between the two positioning ports 21, the two clamping plates 23 can be pushed and pulled to make them slide closer to or further away from each other, so as to realize the adjustment of the position of the two positioning ports 21, which is convenient to operate.

[0038] Furthermore, as a preferred embodiment, in order to facilitate the assembly and disassembly of the pressure plate 22 and improve the ease of pressing the battery cell by the pressure plate 22, the pressure plate 22 is snapped onto the welding seat 1 by at least two buckles 6, with the two buckles 6 respectively located on both sides of the pressure plate 22.

[0039] Furthermore, as a preferred embodiment, the welding base 1 has at least two guide posts 3, which are respectively disposed on both sides of the pressure plate 22, and the pressure plate 22 is longitudinally slidably mounted on the two guide posts 3.

[0040] Furthermore, as a preferred embodiment, each guide post 3 is fitted with a spring 4 on its outside, with one end of the spring 4 abutting against the welding seat 1 and the other end abutting against the bottom of the pressure plate 22.

[0041] In this embodiment, guide posts 3 and springs 4 are provided, which can flexibly adjust the contact distance between pole posts and pole tabs of different height specifications, thereby improving applicability.

[0042] Furthermore, as a preferred embodiment, the pressure plate 22 has at least two sliding holes, and the two guide posts 3 slide through the two sliding holes respectively.

[0043] Furthermore, as a preferred embodiment, in order to further improve the accuracy of the welding position, the welding base 1 has a positioning structure 5 for positioning the battery cell.

[0044] Furthermore, as a preferred embodiment, the welding base 1 includes a base plate 11 and two upright plates 13. The top of the base plate 11 has a support platform 12, and the two upright plates 13 are mounted on the base plate 11 and located on both sides of the support platform 12 respectively. The pressure head assembly 2 is detachably mounted between the tops of the two upright plates 13.

[0045] Preferably, the support platform 12 is insulated.

[0046] Furthermore, as a preferred embodiment, the positioning structure 5 includes three positioning blocks 51, which are mounted on the welding base 1 and arranged along the circumference of the battery cell. They are used to position and cooperate with the three sides of the battery cell respectively. After the three positioning blocks 51 position the three sides of the battery cell onto the support platform 12, the distance between the two positioning ports 21 can be adjusted so that the two positioning ports 21 are directly above the two poles of the battery cell. Then, the pressure plate 22 is snapped onto the welding base 1 by the buckle 6. Then, the two tabs are placed in the two positioning ports 21 respectively and positioned on the two poles of the battery cell. Finally, the tabs and poles are welded together.

[0047] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium-ion battery tab welding tool, characterized by, The utility model relates to a welding seat for battery cell, which comprises a support platform for placing the battery cell, a pressure head assembly for pressing the battery cell, and two positioning ports for positioning two tabs of the battery cell. The distance between the two positioning ports is adjustable. The pressure head assembly comprises a pressure plate, two clamping plates, and two tower buckles.

2. The lithium-ion battery tab welding tooling of claim 1, wherein, The pressure plate is detachably mounted on the welding seat, and each side of the pressure plate has an adjusting port.

3. The lithium-ion battery tab welding tooling of claim 2, wherein, The two clamping plates are respectively slidably mounted in the two adjusting ports, and the two clamping plates can slide towards or away from each other. The two positioning ports are respectively arranged on the two clamping plates. The pressure plate is clamped to the welding seat by the two tower buckles, and the two tower buckles are respectively arranged on the two sides of the pressure plate.

4. The lithium-ion battery tab welding tooling of claim 3, wherein, The welding seat has at least two guide columns, and the two guide columns are respectively arranged on the two sides of the pressure plate.

5. The lithium-ion battery tab welding tooling of claim 4, wherein, The pressure plate is longitudinally slidably mounted on the two guide columns.

6. The lithium-ion battery tab welding tool of claim 5, wherein the welding tool further comprises a plurality of welding electrodes. Each guide column has a spring outside, one end of the spring is in contact with the welding seat, and the other end is in contact with the bottom of the pressure plate.

7. The lithium-ion battery tab welding tool of claim 5, wherein the welding tool further comprises a plurality of welding electrodes. The pressure plate has at least two sliding holes, and the two guide columns respectively slide through the two sliding holes.

8. The lithium-ion battery tab welding tool of claim 1, wherein, The welding seat has a positioning structure for positioning the battery cell.

9. The lithium-ion battery tab welding tool of claim 8, wherein the welding tool further comprises a plurality of welding electrodes. The welding seat comprises a bottom plate, two vertical plates, and a pressure head assembly. The top of the bottom plate has a support platform. The two vertical plates are mounted on the bottom plate and are respectively arranged on the two sides of the support platform.

10. The lithium-ion battery tab welding tooling of any one of claims 8-9, wherein, The pressure head assembly is detachably mounted between the tops of the two vertical plates. The positioning structure comprises three positioning blocks. The three positioning blocks are mounted on the welding seat and are arranged along the circumference of the battery cell for positioning cooperation with three side surfaces of the battery cell.

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