Tab welding equipment
By designing the electrode ear welding equipment, the adjustment devices of the battery cell placement table and the electrode ear placement table ensure that the electrode plate is connected to the electrode ear, which solves the problems of skewed and insufficient welding strength in manual welding, improves welding efficiency and avoids Battery short circuit and quality accident.
Patent Information
- Application Number
- CN202420600424.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-26
AI Technical Summary
In the manufacturing of lithium batteries, manual welding methods lead to large deviation of the center distance of the electrodes and insufficient welding area, resulting in insufficient welding or insufficient welding strength, resulting in short circuits in the packaging process and quality accidents in the charging process.
A pole ear welding equipment is designed, including a battery cell plating table and a pole ear plating table. The adjustment device ensures that the battery cell pole plate and the pole ear are connected to the correct position, and welding is used to improve welding efficiency and solve dummy welding. and insufficient welding strength.
The efficiency of the welding process is improved, the battery cell is avoided short circuit in the packaging process and quality accidents in the charging process, and the stability of welding quality is ensured.
Smart Images
Figure CN222199412U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery processing, in particular to a tab welding device. Background Art
[0002] With the rapid development of new energy vehicles, the penetration rate of new energy vehicles is getting higher and higher. The automotive industry's demand for lithium batteries is also increasing, driving the rapid increase in the production scale of lithium batteries.
[0003] As the research on lithium battery manufacturing deepens, the production technology of lithium batteries is gradually improved and optimized, and researchers are paying more and more attention to more detailed topics in the process. Tab welding is an important process in battery production. The original manual welding method is not only inefficient, but also prone to large deviations in the tab center distance and insufficient effective welding area, as well as problems such as cold welding or insufficient welding strength, which ultimately lead to safety hazards such as poor melt glue short circuit in the packaging process and quality accidents such as short circuit, high internal resistance, corrosion leakage, and flatulence in the charging process. Utility Model Content
[0004] In view of this, it is necessary to provide a tab welding device to solve the technical problem of manual welding of the tabs of lithium batteries in the prior art and unstable welding quality.
[0005] The utility model provides a tab welding device, which comprises: a battery cell placing table, a tab placing table and a welding device, wherein the battery cell placing table comprises a battery cell fixing part and an adjusting device, the battery cell fixing part is used for placing and fixing the battery cell, and the adjusting device is transmission-connected with the battery cell fixing part to move the battery cell fixing part; the tab placing table comprises a tab base and a clamping assembly, the clamping assembly is arranged on the upper surface of the tab base to form a placement cavity for placing the tab, the placement cavity has an opening facing the battery cell placing table, and the welding device has a welding head arranged facing the placement cavity, and the welding head is used for welding the pole piece and the tab of the battery cell.
[0006] Furthermore, the adjustment device includes a lateral moving unit and a height lifting unit. The lateral moving unit can move laterally relative to the tab placement platform. The height lifting unit is arranged on the lateral moving unit. The battery cell fixing part is arranged on the height lifting unit. The height lifting unit can adjust the height of the battery cell fixing part.
[0007] Furthermore, the lateral movement unit includes a loading platform, a guide rail and a loading base. The guide rail is fixedly arranged on the loading platform along the lateral direction. The loading base is slidably connected to the guide rail and can slide along the guide rail relative to the tab placement platform. The height lifting unit is arranged on the loading base.
[0008] Furthermore, the height lifting unit includes two supporting blocks and corresponding fixing parts. The supporting blocks are relatively arranged on the loading base. The supporting blocks have relative inclined surfaces, and the battery cell fixing part is placed on the inclined surfaces. The supporting blocks are detachably fixedly connected to the loading base through the fixing parts, and the height of the battery cell fixing part can be changed by adjusting the distance between the two supporting blocks.
[0009] Furthermore, the inclined surface is formed with a plurality of steps, and the battery cell fixing part is placed on the steps.
[0010] Furthermore, the battery cell fixing part includes a placement plate and a clamping assembly, the placement plate is placed on the inclined plane, and four clamping assemblies are arranged on the placement plate to form a rectangular placement groove for placing the battery cell.
[0011] Furthermore, the placement plate has a plurality of mounting holes, and the clamping assembly can be detachably connected to different mounting holes to change the size of the placement slot.
[0012] Furthermore, the tab placement platform has three clamping assemblies, which together form a placement cavity with an opening, and the clamping assemblies are fixedly connected to the upper surface of the tab base in an adjustable position to adjust the size of the placement cavity.
[0013] Furthermore, the tab base is fixedly connected to the loading platform.
[0014] Furthermore, the welding device also includes a welding machine body, which is fixedly connected to the loading platform, and the welding machine body is connected to a welding head, which is located directly above the placement cavity and faces the placement cavity.
[0015] Compared with the prior art, the tab welding equipment provided by the utility model utilizes a tab placement table to place and fix the tab, and utilizes a cell placement table to fix and move the cell, so that the electrode piece and the tab of the cell are docked at the correct position, and then a welding device is used for welding, thereby improving the efficiency of the welding process, solving the problems of tab skewness, cold soldering and insufficient welding strength caused by weld marks exceeding the tab welding range during manual welding, and avoiding the safety hazard of short circuit caused by poor melt in the packaging process of the cell and the quality accidents of corrosion, leakage and bloating in the charging link.
[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the preferred embodiment of the utility model is described in detail as follows with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0018] Figure 1 A schematic structural diagram of an embodiment of a tab welding device provided by the utility model;
[0019] Figure 2 This is a top view of the tab placement platform. DETAILED DESCRIPTION
[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.
[0021] See also Figure 1 and Figure 2 The utility model provides a tab welding device. The tab welding device comprises a cell placement table 1, a tab placement table 2 and a welding device 3.
[0022] The battery cell placement platform 1 includes a battery cell fixing part 11 and an adjustment device. The battery cell fixing part 11 is used to place and fix the battery cell. The adjustment device is connected to the battery cell fixing part 11 in a transmission manner to move the battery cell fixing part so that the pole piece of the battery cell is aligned with the pole lug. The pole lug placement platform 2 includes a pole lug base 21 and a clamping assembly 22. The clamping assembly 22 is arranged on the upper surface of the pole lug base 21 to form a placement cavity for placing the pole lug. The placement cavity has an opening facing the battery cell placement platform 1 for contact between the pole piece and the pole lug. The welding device 3 has a welding head 31 arranged toward the placement cavity. The welding head 31 is used to weld the pole piece and the pole lug of the battery cell.
[0023] The tabs are placed and fixed on the tab placement table 2, and the cell placement table 1 is used to fix and move the cell, so that the pole piece and the tab of the cell are connected to the correct position, and then the welding device 3 is used for welding. The efficiency of the welding process is improved, and the problems of tab skewness, welding marks exceeding the tab welding range, and insufficient welding strength caused by the manual welding process are solved, and the safety hazards of poor melt short circuit in the packaging process of the cell and the quality accidents of corrosion leakage and flatulence in the charging link are avoided.
[0024] In some embodiments, the adjustment device includes a lateral moving unit 12 and a height lifting unit 13. The lateral moving unit 12 can move laterally relative to the pole ear placement platform 2. The height lifting unit 13 is arranged on the lateral moving unit 12. The battery cell fixing part 11 is arranged on the height lifting unit 13. The height lifting unit 13 can adjust the height of the battery cell fixing part 11 so that the pole piece is aligned with the pole ear.
[0025] The lateral moving unit 12 includes a loading platform 121, a guide rail 122 and a loading base 123. The loading platform 121 is a bearing structure that carries other components. The upper surface of the loading platform 121 is a horizontal plane, and the guide rail 122 is fixedly arranged on the loading platform 121 in the horizontal direction. The loading base 123 is slidably connected to the guide rail 122 and can slide along the guide rail 122 relative to the tab placement platform 2. The height lifting unit 13 is arranged on the loading base 123. The loading base 123 can be driven to slide along the guide rail 122 by an electric push rod, a cylinder, a hydraulic cylinder or the like, or it can be driven to slide by manually screwing a screw rod or other mechanical structures.
[0026] In some embodiments, the height lifting unit 13 includes two bearing blocks 131 and corresponding fixing members 132. The two bearing blocks 131 are arranged on the carrier base 123 in a relative manner, and the bearing blocks 131 have opposite inclined surfaces, and the battery cell fixing portion 11 is placed on the inclined surfaces. The bearing blocks 131 are detachably fixedly connected to the carrier base 123 through the fixing members 132, and the height of the battery cell fixing portion 11 can be changed by adjusting the spacing between the two bearing blocks 131.
[0027] For example, a long strip-shaped installation groove can be provided on the loading base 123, and the fixing member 132 can slide along the installation groove and be fixed at any position of the installation groove, and the bearing block 131 is positioned against the fixing member 132. During production and processing, the same type of battery cells are generally processed continuously, and the height lifting unit 13 does not need to adjust the height frequently, and this height adjustment method will not reduce production efficiency.
[0028] In a preferred embodiment, the inclined surface is formed with a plurality of steps, and the battery cell fixing portion 11 is placed on the steps, so that the battery cell fixing portion 11 is placed more stably.
[0029] In some embodiments, the battery cell fixing part 11 includes a placement plate 111 and a clamping assembly 112. The placement plate 111 is placed on an inclined surface, and when there is a step, it is placed on the step. Four clamping assemblies 112 are arranged on the placement plate 111 and form a rectangular placement groove. The shape and size of the placement groove are adapted to the battery cell, so that the battery cell can be just embedded in the placement groove.
[0030] In a preferred embodiment, the placement plate 111 has a plurality of mounting holes, and the clamping assembly 112 can be detachably connected to different mounting holes to change the size of the placement slot to accommodate different types of battery cells.
[0031] See also Figure 2 In some embodiments, the tab placement platform 2 has three clamping assemblies 22, which together form a placement cavity with an opening. The clamping assemblies 22 are fixedly connected to the upper surface of the tab base 21 in an adjustable position to adjust the size of the placement cavity.
[0032] The tab base 21 is fixedly connected to the loading platform 121 , so that the relative positions of the tab base 21 and the loading platform 121 remain fixed.
[0033] In some embodiments, the welding device 3 also includes a welding machine body 32, which is fixedly connected to the loading platform 121, and the welding machine body 32 is connected to a welding head 31, which is located directly above the placement cavity and faces the placement cavity for welding the electrode sheet and the electrode ear.
[0034] Compared with the prior art, the tab welding equipment provided by the utility model utilizes a tab placement table to place and fix the tab, and utilizes a cell placement table to fix and move the cell, so that the electrode piece and the tab of the cell are docked at the correct position, and then a welding device is used for welding, thereby improving the efficiency of the welding process, solving the problems of tab skewness, cold soldering and insufficient welding strength caused by weld marks exceeding the tab welding range during manual welding, and avoiding the safety hazard of short circuit caused by poor melt in the packaging process of the cell and the quality accidents of corrosion, leakage and bloating in the charging link.
[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.
Claims
1. A tab welding device, characterized in that: It includes: A battery cell placement table, a tab placement table and a welding device, wherein the battery cell placement table includes a battery cell fixing part and an adjustment device, the battery cell fixing part is used to place and fix the battery cell, and the adjustment device is transmission-connected to the battery cell fixing part to move the battery cell fixing part; the tab placement table includes a tab base and a clamping assembly, the clamping assembly is arranged on the upper surface of the tab base to form a placement cavity for placing the tab, the placement cavity has an opening facing the battery cell placement table, and the welding device has a welding head arranged toward the placement cavity, and the welding head is used to weld the pole piece and the tab of the battery cell.
2. The tab welding equipment according to claim 1, characterized in that: The adjustment device includes a lateral moving unit and a height lifting unit. The lateral moving unit can move laterally relative to the tab placement platform. The height lifting unit is arranged on the lateral moving unit. The battery cell fixing part is arranged on the height lifting unit. The height lifting unit can adjust the height of the battery cell fixing part.
3. The tab welding equipment according to claim 2, characterized in that: The lateral moving unit includes a loading platform, a guide rail and a loading base. The guide rail is fixedly arranged on the loading platform along the lateral direction. The loading base is slidably connected to the guide rail and can slide along the guide rail relative to the tab placement platform. The height lifting unit is arranged on the loading base.
4. The tab welding equipment according to claim 3, characterized in that: The height lifting unit includes two supporting blocks and corresponding fixing parts. The supporting blocks are relatively arranged on the carrier base. The supporting blocks have relative inclined surfaces, and the battery cell fixing part is placed on the inclined surfaces. The supporting blocks are detachably fixedly connected to the carrier base through the fixing parts. By adjusting the distance between the two supporting blocks, the height of the battery cell fixing part can be changed.
5. The tab welding equipment according to claim 4, characterized in that: The inclined surface is formed with a plurality of steps, and the battery cell fixing portion is placed on the steps.
6. The tab welding equipment according to claim 4, characterized in that: The battery cell fixing part comprises a placement plate and a clamping assembly. The placement plate is placed on the inclined plane. Four clamping assemblies are arranged on the placement plate to form a rectangular placement groove for placing the battery cell.
7. The tab welding equipment according to claim 6, characterized in that: The placement plate has a plurality of mounting holes, and the clamping assembly can be detachably connected to different mounting holes to change the size of the placement slot.
8. The tab welding equipment according to claim 3, characterized in that: The tab placement platform has three clamping assemblies, which together form a placement cavity with an opening. The clamping assemblies are fixedly connected to the upper surface of the tab base in an adjustable position to adjust the size of the placement cavity.
9. The tab welding equipment according to claim 3, characterized in that: The tab base is fixedly connected to the loading platform.
10. The tab welding equipment according to claim 3, characterized in that: The welding device further comprises a welding machine body, wherein the welding machine body is fixedly connected to the loading platform, the welding machine body is connected to the welding head, and the welding head is located directly above the placement cavity and faces the placement cavity.