Collecting disc welding device
The design of the current collector welding device solved the problem of warping and deformation during the current collector welding process, thereby improving welding quality and battery performance.
Patent Information
- Application Number
- CN202422832565.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-20
AI Technical Summary
During the welding process of the current collector of a cylindrical battery, the current collector is prone to warping and deformation due to its thinness, resulting in weak welding and affecting the battery's charging and discharging performance and product quality.
A welding device for the manifold, including a first positioning plate and a second positioning plate, is adopted. The second positioning plate is controlled to press and adhere to the manifold through a transmission component, ensuring the flatness of the manifold during the welding process. The welding quality is improved by using a guide and limit component and a coolant supply device.
It effectively prevents the current collector from warping and deforming, ensures welding quality, and improves the battery's charging and discharging performance and product quality.
Smart Images
Figure CN223476650U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cylindrical lithium battery technology, and in particular to a current collector welding device. Background Technology
[0002] In cylindrical batteries, to improve the charge / discharge rate, a full-tab process is often used. This means that a current collector is used as a carrier to connect the tabs to the positive or negative terminals, and the current collector collects the current. The tabs and current collector are connected by laser welding. Currently, during the current collector welding process, due to the thinness of the current collector and the large amount of heat generated, irregular and uneven warping deformation occurs.
[0003] Therefore, there is an urgent need for a manifold welding device to solve the technical problems existing in the current manifold welding process. Utility Model Content
[0004] The purpose of this invention is to provide a welding device for a manifold that can ensure the manifold remains flat during the welding process, avoid warping and deformation, and improve the quality of the finished product.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] The manifold welding device includes:
[0007] The first positioning plate has a preset area for placing the collection plate;
[0008] The second positioning plate is arranged parallel to and spaced apart from the first positioning plate, and a welding hole is provided through the second positioning plate.
[0009] The transmission component has a fixed end disposed on the first positioning plate and a transmission end connected to the second positioning plate. The transmission component can control the second positioning plate to fit and press against the collector plate, so that the welding equipment can weld the collector plate through the welding hole.
[0010] Preferably, a limiting groove is formed in the preset area of the first positioning plate, and the cross-sectional shape of the limiting groove is the same as the cross-sectional shape of the collecting plate, so that the collecting plate can be limited and positioned in the limiting groove.
[0011] Preferably, the bottom of the limiting groove is provided with a limiting post protruding upwards, the collecting plate has a through hole, and the limiting post can be inserted into the through hole for limiting.
[0012] Preferably, the second positioning plate has a gas channel that connects the welding hole and the protective gas supply device.
[0013] Preferably, a liquid flow channel is provided through the first positioning plate, and the liquid flow channel is circulated and connected to the coolant supply device.
[0014] Preferably, the transmission component includes a dual-drive rod cylinder.
[0015] Preferably, the collector welding device further includes a guide limiting assembly, which includes a guide rod and a guide bearing. The guide rod is vertically fixed on the first positioning plate, and the guide bearing is fixed on the second positioning plate. The guide rod can be inserted into and slide directionally within the guide bearing.
[0016] Preferably, a guide rod is provided on each side of the first positioning plate, and a guide bearing is provided on each side of the second positioning plate, with the guide bearings corresponding to the guide rods.
[0017] Preferably, the manifold welding device further includes a first fixing plate and a second fixing plate, wherein:
[0018] The first fixing plate is fixedly connected to the first positioning plate and the fixed end of the transmission component;
[0019] The second fixing plate is fixedly connected to the second positioning plate and the transmission end of the transmission component.
[0020] Preferably, both the first positioning plate and the second positioning plate are made of brass.
[0021] The beneficial effects of the current collector welding device provided by this utility model are as follows: After the current collector to be welded is placed on the preset area of the first positioning plate, the transmission component can control the second positioning plate to move downward and toward the first positioning plate, so that the second positioning plate can fit and press against the surface of the current collector. At this time, the welding holes on the second positioning plate are opposite to the welding surface on the current collector, allowing the current collector welding equipment to weld the current collector through the welding holes. Due to the setting of the second positioning plate, it can be ensured that the current collector will not warp or deform during the welding process, thereby ensuring the welding quality and preventing the current collector from having a false weld or a weak weld between the current collector and the battery casing, thus improving the charging and discharging performance of the battery and the product quality. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of the second positioning plate in the collector welding device provided in this embodiment of the utility model when it is rising;
[0023] Figure 2 This is a schematic diagram of the second positioning plate in the collector welding device provided in this embodiment of the utility model when it is descending;
[0024] Figure 3 This is an exploded view of the manifold welding device provided in this embodiment of the utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the first positioning plate provided in this embodiment of the utility model;
[0026] Figure 5 This is a schematic diagram of the structure of the second positioning plate provided in this embodiment of the utility model.
[0027] In the picture:
[0028] 100. Collector disk;
[0029] 1. First positioning plate; 11. Limiting groove; 12. Limiting post; 13. Liquid flow channel;
[0030] 2. Second positioning plate; 21. Welding hole; 22. Gas pipe interface;
[0031] 3. Transmission components;
[0032] 4. Guide and limit assembly; 41. Guide rod; 42. Guide bearing;
[0033] 5. First fixing plate;
[0034] 6. Second fixing plate; 61. Alternating hole. Detailed Implementation
[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 communication of two components or the interaction between 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.
[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0038] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0039] Some existing current collectors 100 are relatively thin, making them prone to warping and deformation during laser welding. This can lead to incomplete welds or weak welds between the current collector 100 and the battery casing, increasing the battery's internal resistance, reducing its current carrying capacity, and hindering its charge and discharge performance. Therefore, this invention proposes the following embodiments to solve the above problems.
[0040] Combination Figures 1 to 5 As shown, this embodiment provides a collector plate welding device, including a first positioning plate 1, a second positioning plate 2, and a transmission component 3. The first positioning plate 1 has a preset area for placing the collector plate 100. The second positioning plate 2 is parallel to and spaced apart from the first positioning plate 1, and has a through welding hole 21. The fixed end of the transmission component 3 is disposed on the first positioning plate 1, and the transmission end of the transmission component 3 is connected to the second positioning plate 2.
[0041] Based on the above settings, refer to Figure 1 and Figure 2As shown, when the current collector 100 to be welded is placed on the preset area of the first positioning plate 1, the transmission component 3 can control the second positioning plate 2 to move downwards and toward the first positioning plate 1, so that the second positioning plate 2 can fit and press against the surface of the current collector 100. At this time, the welding hole 21 on the second positioning plate 2 is opposite to the surface to be welded on the current collector 100, so that the current collector welding equipment can weld the current collector 100 through the welding hole 21. Due to the setting of the second positioning plate 2, it can be ensured that the current collector 100 will not warp or deform during the welding process, thereby ensuring the welding quality and preventing the current collector 100 from having a false weld or a weak weld between it and the battery casing, thus improving the charging and discharging performance of the battery and the product quality.
[0042] Optionally, in this embodiment, reference is made to... Figures 1 to 3 The aforementioned collector welding device further includes a guide limiting component 4, which includes a guide rod 41 and a guide bearing 42. The guide rod 41 is vertically fixed on the first positioning plate 1, and the guide bearing 42 is fixed on the second positioning plate 2. The end of the guide bearing 42 facing the guide rod 41 is provided with a sliding hole. When the transmission component 3 drives the second positioning plate 2 to move closer to the first positioning plate 1, the guide rod 41 can be inserted into the sliding hole of the guide bearing 42 and slide directionally within the guide bearing 42 to ensure that the first positioning plate 1 can stably and horizontally adhere to the surface of the collector 100.
[0043] Of course, in some other parallel embodiments, the guide limiting component 4 can also be composed of a slide rail and a guide slider, wherein the slide rail is fixedly mounted vertically on the first positioning plate 1 and the slider is fixedly mounted on the second positioning plate 2. When the second positioning plate 2 moves toward the first positioning plate 1, the slider on the second positioning plate 2 can slide directionally within the slide rail, thus achieving the stability requirement when the second positioning block descends.
[0044] Furthermore, in this embodiment, a guide rod 41 is provided on each side of the first positioning plate 1, and a guide bearing 42 is provided on each side of the second positioning plate 2. The guide bearings 42 are correspondingly provided on the guide rods 41, so as to further improve the stability of the second positioning block when it is raised and lowered while controlling the manufacturing cost.
[0045] To improve the installation stability of the manifold 100 on the first positioning plate 1, in this embodiment, reference is made to... Figure 4As shown, a limiting groove 11 is provided in the preset area of the first positioning plate 1. The cross-sectional shape of the limiting groove 11 is the same as that of the collecting plate 100, that is, both are circular. The collecting plate 100 can be limited and positioned in the limiting groove 11. Thus, before the second positioning plate 2 is pressed onto the collecting plate 100, the limiting groove 11 can restrict the movement of the collecting plate 100 relative to the first positioning plate 1, thereby ensuring the orderly progress of the welding process and good welding quality.
[0046] Furthermore, the bottom of the limiting groove 11 protrudes upward to provide a limiting post 12, and the center of the collecting plate 100 has a through hole. In this way, through the dual protection of the limiting post 12 and the limiting groove 11, the risk of the collecting plate 100 shifting on the first positioning plate 1 can be greatly reduced, making the positioning accuracy and installation stability of the collecting plate 100 on the first positioning plate 1 higher.
[0047] Optionally, in this embodiment, a gas pipe interface 22 is fixedly installed at the open end of the welding hole 21, and a gas channel is provided in the second positioning plate 2. One end of the gas channel is connected to the inner wall of the welding hole 21, and the other end is connected to the protective gas supply device through the gas pipe interface 22. During the welding of the manifold 100, a protective gas, such as an inert gas, can be supplied to the welding hole 21 through the protective gas supply device, thereby effectively improving the welding quality and durability of the manifold 100.
[0048] Preferably, in one embodiment of this invention, four gas pipe interfaces 22 are installed at intervals around the axis of the welding hole 21 at the open opening of the welding hole 21, and four gas channels are opened inside the second positioning plate 2. The four gas channels are connected to the four gas pipe interfaces 22 one by one, so that the protective gas supply device can supply protective gas to the welding hole 21 evenly from all directions, thereby ensuring the stability of the welding process.
[0049] Optionally, in this embodiment, a liquid flow channel 13 is provided through the first positioning plate 1. The liquid flow channel 13 is circulatedly connected to the coolant supply device, so that the coolant supply device can continuously supply coolant during the welding process. Through the heat transfer connection between the coolant and the first positioning plate 1, the coolant can transfer the heat generated during the welding process, thereby reducing the temperature of the first positioning plate 1. This can improve the welding quality and durability, and prevent the excessive temperature of the first positioning plate 1 from having an adverse effect on the welding of the manifold 100.
[0050] Preferably, one embodiment of this invention is as follows: (Refer to...) Figure 4As shown, three liquid channels 13 with the same cross-sectional area are arranged side by side and spaced apart on the side of the second positioning plate 2 to enhance the liquid cooling effect on the second positioning plate 2 by increasing the number of liquid channels 13. Of course, in other alternative embodiments, the welding quality can also be ensured by changing the cross-sectional area of the channels or adjusting the flow rate of the coolant. Therefore, this utility model does not limit the number of liquid channels 13, the cross-sectional area of the channels, or the flow rate of the coolant.
[0051] Preferably, in this embodiment, both the first positioning plate 1 and the second positioning plate 2 are brass plates, which can enhance the effect of conducting heat from the manifold 100 outward during the welding process.
[0052] Optionally, the manifold welding device provided in this embodiment further includes a first fixing plate 5 and a second fixing plate 6, wherein the first fixing plate 5 is fixedly connected to the first positioning plate 1 and the fixed end of the transmission component 3, and the second fixing plate 6 is fixedly connected to the second positioning plate 2 and the transmission end of the transmission component 3. Through the above arrangement, the overall integrity of the manifold welding device can be improved, and it is convenient to transport and use.
[0053] Optionally, in this embodiment, both the first positioning plate 1 and the second positioning plate 2 are detachably connected and installed on the first fixing plate 5 and the second fixing plate 6. This allows the first positioning plate 1 and the second positioning plate 2 to be adaptively replaced according to the actual size and specifications of the collector plate 100, thereby ensuring that the second positioning plate 2 can stably secure the collector plate 100 and that the first positioning plate 1 can fit well against the collector plate 100. It should be noted that, in order to ensure the smooth welding process, a clearance hole 61 communicating with the welding hole 21 is also provided through the second fixing plate 6, so that the collector plate welding device can extend into the welding hole 21 through the clearance hole 61 to perform welding.
[0054] Preferably, in this embodiment, the transmission component 3 adopts a double transmission rod cylinder, and the transmission end of the transmission component 3 is connected to the first fixed plate 5. That is, the transmission component 3 can simultaneously control the second positioning plate 2 to rise or fall through the two transmission rods, resulting in better stability and higher motion accuracy.
[0055] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A manifold welding device, characterized in that, include: The first positioning plate (1) has a preset area for placing the collection plate (100); The second positioning plate (2) is parallel to and spaced apart from the first positioning plate (1), and a welding hole (21) is provided through the second positioning plate (2); The transmission component (3) has a fixed end located on the first positioning plate (1) and a transmission end connected to the second positioning plate (2). The transmission component (3) can control the second positioning plate (2) to fit and press against the collector plate (100) so that the welding equipment can weld the collector plate (100) through the welding hole (21).
2. The manifold welding device according to claim 1, characterized in that, A limiting groove (11) is provided in the preset area of the first positioning plate (1). The cross-sectional shape of the limiting groove (11) is the same as that of the collecting plate (100). The collecting plate (100) can be limited and set in the limiting groove (11).
3. The manifold welding device according to claim 2, characterized in that, The bottom of the limiting groove (11) is provided with a limiting post (12) protruding upwards. The collecting plate (100) has a through hole, and the limiting post (12) can be inserted into the through hole for limiting.
4. The manifold welding device according to claim 1, characterized in that, The second positioning plate (2) has a gas channel that connects the welding hole (21) and the protective gas supply device.
5. The manifold welding device according to claim 1, characterized in that, A liquid flow channel (13) is provided through the first positioning plate (1), and the liquid flow channel (13) is circulatedly connected to the coolant supply device.
6. The manifold welding device according to any one of claims 1-5, characterized in that, The transmission component (3) includes a double-drive cylinder.
7. The manifold welding device according to any one of claims 1-5, characterized in that, The collector welding device further includes a guide limiting component (4), which includes a guide rod (41) and a guide bearing (42). The guide rod (41) is vertically fixed on the first positioning plate (1), and the guide bearing (42) is fixed on the second positioning plate (2). The guide rod (41) can be inserted into and slide directionally within the guide bearing (42).
8. The manifold welding device according to claim 7, characterized in that, The first positioning plate (1) has a guide rod (41) on each side, and the second positioning plate (2) has a guide bearing (42) on each side, with the guide bearings (42) corresponding to the guide rods (41).
9. The manifold welding device according to any one of claims 1-5, characterized in that, The collector plate welding device further includes a first fixing plate (5) and a second fixing plate (6), wherein: The first fixing plate (5) is fixedly connected to the first positioning plate (1) and the fixed end of the transmission component (3); The second fixing plate (6) is fixedly connected to the second positioning plate (2) and the transmission end of the transmission component (3).
10. The manifold welding apparatus according to any one of claims 1-5, characterized in that, Both the first positioning plate (1) and the second positioning plate (2) are brass plates.