Tab first welding verification tooling

Abstract

The utility model relates to battery module preparation technical field, specifically disclose the first piece welding verification frock of tab, the frock includes bearing plate and pressure head subassembly, bearing plate is used for bearing tab and welding copper bar, is equipped with at least one elbow clamp on bearing plate, pressure head subassembly installs in bearing plate one side, including bearing and pressure head, the pressure head is connected in bearing piece one side towards bearing plate, bearing piece can be opposite bearing plate and remove to locking position to make the pressure head with tab and tightly on welding copper bar, elbow clamp optional hoop is equipped on bearing piece. The frock can effectively fix the relative position of tab and welding copper bar, is convenient for replacement, maintenance or adjustment, strengthens the applicability and economy, guarantees the accuracy and quality of welding test.

Description

Technical Field

[0001] This utility model relates to the field of battery module manufacturing technology, and in particular to a tooling for verifying the welding of the first electrode piece. Background Technology

[0002] In the battery module manufacturing industry, a battery module is generally composed of several pouch cells. The series and parallel connection is achieved by connecting the tabs of the pouch cells to the copper busbars on the busbar. To ensure the welding quality of the tabs during subsequent battery module production, the first module to be welded is usually selected as the first test sample before the welding equipment is run. This is used to test the welding effect and adjust the welding parameters accordingly.

[0003] However, existing first-piece testing welding methods have significant drawbacks. Currently, during test welding, the entire assembled battery module is often placed at the welding position for welding. If the welding effect is unsatisfactory, the entire battery module must be scrapped, resulting in excessively high sample costs and causing significant resource waste and increased costs. Utility Model Content

[0004] The purpose of this utility model is to provide a first-piece welding verification fixture for electrode tabs, which is used to fix the relative position of the electrode tabs and the welding copper busbars, making it easy to replace, repair or adjust, thereby enhancing applicability and economy, and ensuring the accuracy and quality of welding tests.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A first-piece welding verification fixture for electrode tabs is used to fix the relative position of the electrode tab and the welding copper busbar. The first-piece welding verification fixture for electrode tabs includes a support plate and a pressure head assembly. The support plate is used to support the electrode tab and the welding copper busbar, and the support plate is provided with at least one elbow clamp. The pressure head assembly is installed on one side of the support plate and includes a support member and a pressure head. The pressure head is connected to the side of the support member facing the support plate. The support member can move relative to the support plate to a locked position so that the pressure head presses the electrode tab against the welding copper busbar. The elbow clamp is selectively clamped to the support member.

[0007] As an optional technical solution for the first welding verification tooling of the electrode tab, the elbow clamp includes an elbow clamp handle and an elbow clamp pressure rod. One end of the elbow clamp pressure rod is hinged to the edge of the bearing plate, and the other end is used to abut against the bearing component. The axis of rotation of the elbow clamp pressure rod is perpendicular to the vertical direction. The elbow clamp handle is movably connected to the elbow clamp pressure rod to drive the elbow clamp pressure rod to swing.

[0008] As an optional technical solution for the first welding verification tooling of the electrode tab, the pressure head assembly also includes several guide bolts extending in the vertical direction, the screws of the guide bolts passing through the bearing member and screwed to the pressure head.

[0009] As an optional technical solution for the first welding verification tooling of the electrode tab, the pressure head assembly also includes an elastic element, one end of which abuts against the pressure head and the other end of which abuts against the carrier.

[0010] As an optional technical solution for the first welding verification tooling of the electrode tab, the elastic element is sleeved on the outside of the guide bolt, and the bottom end of the bearing member is recessed with a limiting blind hole corresponding to the elastic element. Each elastic element is partially placed in a limiting blind hole and abuts against the top wall of the limiting blind hole.

[0011] As an optional technical solution for the first welding verification tooling of the electrode tab, the bearing member has a first clearance hole extending through in the vertical direction; and / or, the pressure head has a second clearance hole extending through in the vertical direction.

[0012] As an optional technical solution for the first welding verification tooling of the electrode head, the outer wall of the pressure head is provided with several heat dissipation holes, which are connected to the second clearance hole.

[0013] As an optional technical solution for the first welding verification tooling of the electrode tab, the bearing component has several through guide holes, and the top of the bearing plate is fixedly connected to a guide rod. The number of guide rods is the same as the number of guide holes, and each guide hole is guided and engaged with one guide rod.

[0014] As an optional technical solution for the first welding verification fixture of the electrode, the first welding verification fixture of the electrode also includes a fixed base and several support members extending in the vertical direction. One end of the support member is detachably connected to the bottom end of the bearing plate, and the other end is detachably connected to the top end of the fixed base.

[0015] As an optional technical solution for the first welding verification tooling of the electrode, the bearing plate has a limiting groove on the side facing the pressure head, the welding copper busbar is limited in the limiting groove, and the corner of the limiting groove is provided with a round groove.

[0016] The beneficial effects of this utility model are:

[0017] This first-piece welding verification fixture effectively fixes the relative positions of the independent electrode tabs and the welding copper busbars, reducing the cost of welding samples. The pressure head assembly is mounted on one side of the support plate and can move relative to the support plate. When locked, the pressure head and the welding copper busbars can clamp the electrode tabs, thereby precisely fixing their relative positions and ensuring the accuracy of subsequent welding tests, which helps improve welding quality. Combined with the elbow clamp selectively clamping the support component, the electrode tabs and welding copper busbars can be firmly pressed together, facilitating quick locking and unlocking of the clamping state and improving welding efficiency and stability. Attached Figure Description

[0018] Figure 1 This is an exploded view of the electrode first piece welding verification fixture, electrode, and welding copper busbar provided in this embodiment of the utility model;

[0019] Figure 2 This is a front view of the electrode first piece welding verification fixture provided in this embodiment of the utility model;

[0020] Figure 3 This is a side view of the electrode first piece welding verification fixture provided in this embodiment of the utility model;

[0021] Figure 4 This is a top view of the pressure head assembly provided in this embodiment of the utility model;

[0022] Figure 5 yes Figure 4 Cross-sectional view of plane AA in the middle.

[0023] In the picture:

[0024] 11. Electrode tab; 12. Welded copper busbar; 121. Weight reduction hole;

[0025] 21. Fixed base; 22. Support component; 23. Bearing plate; 231. Guide rod; 232. Positioning clamp; 233. Circular groove;

[0026] 3. Pressure head assembly; 31. Bearing component; 311. First clearance hole; 312. Guide hole; 313. Limiting blind hole; 32. Pressure head; 321. Second clearance hole; 322. Heat dissipation hole; 323. Guide bolt; 324. Elastic component;

[0027] 4. Elbow clamp. Detailed Implementation

[0028] 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.

[0029] 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 for 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" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] 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.

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] like Figures 1 to 5 As shown, this embodiment provides a first-piece welding verification fixture for fixing the relative positions of the electrode 11 and the welding copper busbar 12. The first-piece welding verification fixture includes a support plate 23 and a pressure head assembly 3. The support plate 23 is used to support the electrode 11 and the welding copper busbar 12. At least one elbow clamp 4 is provided on the support plate 23. The pressure head assembly 3 is installed on one side of the support plate 23 and includes a support member 31 and a pressure head 32. The pressure head 32 is connected to the side of the support member 31 facing the support plate 23. The support member 31 can move relative to the support plate 23 to a locked position so that the pressure head 32 presses the electrode 11 against the welding copper busbar 12. The elbow clamp 4 is selectively clamped on the support member 31.

[0033] This first-piece welding verification fixture effectively fixes the relative positions of the independent electrode 11 and the welding copper busbar 12, reducing the cost of welding samples. The pressure head assembly 3 is installed on one side of the support plate 23 and can move relative to the support plate 23. When locked, the pressure head 32 and the welding copper busbar 12 can clamp the electrode 11, thereby accurately fixing the relative positions of the electrode 11 and the welding copper busbar 12, ensuring the positional accuracy of subsequent welding tests, and helping to improve the welding quality. Combined with the elbow clamp 4 selectively clamping the support member 31, the electrode 11 and the welding copper busbar 12 can be firmly pressed together, facilitating quick locking and unlocking of the clamping state of the electrode 11 and the welding copper busbar 12, improving welding efficiency and stability.

[0034] This embodiment takes the first-piece welding verification of the tabs on the battery module as an example. The material and thickness of the welding copper busbar 12 are the same as those of the copper busbar on the battery busbar. Specifically, the welding copper busbar 12 is provided with weight-reduction holes 121, which can save test materials.

[0035] For example, the pressure head assembly 3 is detachably mounted on the support plate 23.

[0036] In this embodiment, a positioning clamp 232 is provided on the support plate 23. The positioning clamp 232 has deformation capability and its two ends are respectively fixed to the top of the support plate 23. The positioning clamp 232 can position the electrode 11 placed on the welding copper busbar 12, so that the electrode 11 is clamped between the positioning clamp 232 and the welding copper busbar 12, thereby achieving the initial positioning of the electrode 11.

[0037] In this embodiment, the elbow clamp 4 includes an elbow clamp handle and an elbow clamp lever. One end of the elbow clamp lever is hinged to the edge of the bearing plate 23, and the other end is used to abut against the bearing member 31. The axis of rotation of the elbow clamp lever is perpendicular to the vertical direction. The elbow clamp handle is movably connected to the elbow clamp lever to drive the elbow clamp lever to swing.

[0038] One end of the elbow clamp 4's clamping lever is hinged to the edge of the support plate 23, with its rotation axis perpendicular to the vertical direction. Combined with the movable elbow clamp handle, this design makes the elbow clamp 4 easy and convenient to operate, enabling quick locking and unlocking of the support component 31 and improving work efficiency. The operator simply needs to swing the elbow clamp handle to rotate the clamping lever, causing the other end of the lever to stably and reliably abut against the support component 31, effectively fixing it and stabilizing the position of the pressure head assembly 3, thus improving work efficiency. Furthermore, the design of the elbow clamping lever's rotation axis being perpendicular to the vertical direction ensures the reliability of the elbow clamp 4 when locking the support component 31. This ensures that the pressure head assembly 3 reliably clamps the electrode tab 11 and the welding copper busbar 12, enhancing the stability and locking reliability of the electrode tab first-piece welding verification fixture operation, and providing strong assurance for welding quality.

[0039] Specifically, the edge of the bearing member 31 is provided with hooks, and the number of hooks is the same as that of the elbow clamp 4 and they correspond one-to-one. The elbow clamp pressure rod is in contact with the hooks.

[0040] When installing the pressure head assembly 3, first operate the elbow clamp handle to bring the elbow clamp lever close to and press against the retractable hook. Then, control the elbow clamp lever to push the hook, causing the carrier 31 to move towards the carrier plate 23 until the carrier 31 moves to the locked position. At this time, the clamping force between the elbow clamp lever and the hook firmly fixes the carrier 31 to the carrier plate 23, thereby achieving rapid fixing of the pressure head assembly 3.

[0041] The specific structure and working principle of the elbow clamp 4 are common knowledge in the field, and its usage and technical effects are well known to those skilled in the art. Moreover, the elbow clamp 4 is not the core technical content to be protected in this embodiment, so it will not be described in detail here.

[0042] For example, the pressure head assembly 3 also includes a plurality of guide bolts 323 extending in a vertical direction, the thread of the guide bolts 323 passing through the carrier 31 and screwed to the pressure head 32.

[0043] The guide bolt 323 in the pressure head assembly 3 extends vertically, and the bolt passes through the bearing member 31 and is screwed to the pressure head 32. The guide bolt 323 provides precise guidance for the vertical movement of the pressure head 32 relative to the bearing member 31, avoids the pressure head 32 from deviating during the movement, ensures the accurate movement trajectory of the pressure head 32, and ensures that the pressure head 32 accurately applies pressure to the electrode tab 11 and the welding copper busbar 12, further improving the clamping accuracy and positional accuracy of the electrode tab 11 and the welding copper busbar 12.

[0044] In this embodiment, the pressure head 32 is elastically connected to the support member 31, and the pressure head 32 can move relative to the support member 31 in the vertical direction.

[0045] Furthermore, the pressure head assembly 3 also includes an elastic element 324, one end of which abuts against the pressure head 32 and the other end of which abuts against the carrier 31.

[0046] After the pressure head assembly 3 moves and locks, the elastic element 324 contracts to generate elastic force, allowing the pressure head 32 to better press the electrode tab 11 and the welding copper busbar 12 under the elastic action, ensuring a tight fit between the two and helping to improve the welding effect. Furthermore, it can adapt to certain height or thickness changes under different welding test scenarios, ensuring stable clamping force. Moreover, the pressure head 32 can automatically reset after the elbow clamp 4 is unlocked. At the same time, the elastic element 324 can also buffer the pressure of the pressure head 32 on the electrode tab 11 and the welding copper busbar 12 to a certain extent, preventing excessive pressure from damaging the workpiece.

[0047] Furthermore, the elastic element 324 is sleeved on the outside of the guide bolt 323, and the bottom end of the bearing member 31 is recessed with a limiting blind hole 313 corresponding to the elastic element 324. Each elastic element 324 is partially placed in a limiting blind hole 313 and abuts against the top wall of the limiting blind hole 313. Specifically, the number of limiting blind holes 313 is the same as the number of elastic elements 324.

[0048] One end of the elastic element 324 is connected to the bottom end of the carrier 31, and the other end is connected to the top end of the pressure head 32, with part of it placed inside the limiting blind hole 313 at the bottom end of the carrier 31. The limiting blind hole 313 limits the elastic element 324, effectively preventing it from shifting or shaking during operation, ensuring that the elastic element 324 can function stably, improving the stability and reliability of the electrode first piece welding verification fixture, and making the clamping force of the pressure head 32 on the electrode 11 and the welding copper busbar 12 more uniform and stable.

[0049] Specifically, the elastic element 324 includes a telescopic spring, which is used to drive the pressure head 32 and the bearing element 31 away from each other. The number of telescopic springs is the same as that of the guide bolts 323, and each telescopic spring is fitted onto one guide bolt 323.

[0050] In one embodiment of this invention, the bearing member 31 has a first clearance hole 311 extending vertically; and the pressure head 32 has a second clearance hole 321 extending vertically.

[0051] The first clearance hole 311 of the bearing member 31 and the second clearance hole 321 of the pressure head 32 can provide operating space for welding equipment or other tools, avoid interference during welding, facilitate welding testing and other operations, make welding operations smoother, and improve the applicability of the first piece welding verification tooling for the electrode tab.

[0052] Specifically, the welding equipment includes a welding head for welding. The welding head can more easily contact the welding parts of the tab 11 and the welding copper busbar 12 through the clearance hole, avoiding interference of the first piece welding verification tooling of the tab on the welding operation, and improving the operability and efficiency of welding.

[0053] In another embodiment of this invention, only the bearing member 31 is limited to having a first clearance hole 311 extending vertically. In yet another embodiment of this invention, only the pressure head 32 is limited to having a second clearance hole 321 extending vertically.

[0054] Furthermore, the outer wall of the pressure head 32 is provided with a number of heat dissipation holes 322, which are connected to the second clearance hole 321.

[0055] A heat dissipation hole 322 is opened on the outer wall of the pressure head 32 and connected to the second clearance hole 321. During the welding process, the heat generated by welding can be dissipated through the heat dissipation hole 322 to prevent the pressure head 32, the electrode 11 or the welding copper busbar 12 from deforming or being damaged due to excessive temperature, ensuring the stable performance of the pressure head 32, helping to extend the service life of the electrode first piece welding verification tooling, and improving the welding quality.

[0056] In this embodiment, the support member 31 has a plurality of guide holes 312 through it, and the top end of the support plate 23 is fixedly connected to a guide rod 231. The number of guide rods 231 is the same as the number of guide holes 312, and each guide hole 312 is guided and engaged with a guide rod 231.

[0057] The guide hole 312 of the support member 31 engages with the guide rod 231 at the top of the support plate 23, further enhancing the stability and accuracy of the pressure head assembly 3 in vertical movement. The engagement of the guide rod 231 and the guide hole 312 effectively restricts the movement trajectory of the pressure head assembly 3, providing precise guidance for the vertical movement of the pressure head assembly 3 relative to the support plate 23. This allows the pressure head assembly 3 to move accurately to the locking position, ensuring that the pressure head 32 accurately presses onto the electrode tab 11, guaranteeing the clamping accuracy and relative positional accuracy of the electrode tab 11 and the welding copper busbar 12, thereby improving the quality of subsequent welding.

[0058] For example, the electrode first piece welding verification fixture also includes a fixed base 21 and several support members 22 extending in the vertical direction. One end of the support member 22 is detachably connected to the bottom end of the bearing plate 23, and the other end is detachably connected to the top end of the fixed base 21.

[0059] The support member 22 extends vertically and is detachably connected at both ends to the support plate 23 and the fixed base 21, respectively. By replacing the support member 22 with different lengths, the height of the support plate 23 relative to the fixed base 21 can be flexibly adjusted to adapt to different welding positions, improving the versatility and applicability of the first-piece welding verification fixture for the electrode tab, thereby meeting the needs of various welding environments. Moreover, the support plate 23 is detachably connected to the fixed base 21, facilitating the replacement, repair, or adjustment of the first-piece welding verification fixture for the electrode tab. It also allows for easy replacement of the support plate 23 according to different needs, enhancing the flexibility and maintainability of the first-piece welding verification fixture for the electrode tab.

[0060] In this embodiment, a limiting groove is provided on the side of the bearing plate 23 facing the pressure head 32, and the welding copper busbar 12 is limited in the limiting groove. A circular groove 233 is provided at the corner of the limiting groove.

[0061] The corner of the limiting groove is provided with a circular groove 233, which facilitates the operator to pick up and remove the welding copper busbar 12. After the welding test is completed, the welding copper busbar 12 can be easily removed from the limiting groove through the circular groove 233, which improves the convenience of operation and reduces the time and difficulty of picking up and putting down the welding copper busbar 12. Moreover, the top of the support plate 23 is recessed with a limiting groove to accommodate and fix the welding copper busbar 12, which can ensure the accurate position of the welding copper busbar 12 on the first piece welding verification fixture of the electrode tab, avoid displacement during the welding process, and ensure welding quality.

[0062] This embodiment also provides a method for verifying the first piece welding of the electrode tab, applied to the aforementioned electrode tab first piece welding verification fixture, including the following steps:

[0063] The welding copper busbar 12 is fixed in the limiting groove, and the electrode tab 11 is placed on the welding copper busbar 12. Then, the carrier 31 is installed on the guide rod 231, and the guide rod 231 slides downward through the cooperation of the guide hole 312 until the pressure head 32 presses on the electrode tab 11. Then, the carrier 31 is fixed by the elbow clamp 4, so that the elastic element 324 contracts, and the pressure head 32 presses the electrode tab 11 and the welding copper busbar 12 tightly under the action of the elastic element 324. After that, the carrier plate 23 is moved to the predetermined position, and then fixed to the fixed seat 21 by the support 22. Finally, the welding test is carried out using the welding equipment.

[0064] The first-piece welding verification method for the electrode uses the above process to complete the welding test of the copper busbar 12 and the electrode 11, which can reduce the testing cost, reduce the difficulty of operation, and improve the testing efficiency.

[0065] 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 other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations 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 first-piece welding verification fixture for electrode tabs, used to fix the relative positions of the electrode tab (11) and the welding copper busbar (12), characterized in that, The electrode first piece welding verification fixture includes: A support plate (23) is used to support the electrode tab (11) and the welding copper busbar (12), and at least one elbow clamp (4) is provided on the support plate (23); The pressure head assembly (3) is installed on one side of the support plate (23) and includes a support member (31) and a pressure head (32). The pressure head (32) is connected to the side of the support member (31) facing the support plate (23). The support member (31) can move relative to the support plate (23) to a locked position so that the pressure head (32) presses the electrode (11) against the welding copper busbar (12). The elbow clamp (4) is selectively clamped on the support member (31).

2. The electrode tab first-piece welding verification fixture according to claim 1, characterized in that, The elbow clamp (4) includes an elbow clamp handle and an elbow clamp lever. One end of the elbow clamp lever is hinged to the edge of the bearing plate (23), and the other end is used to abut against the bearing member (31). The axis of rotation of the elbow clamp lever is perpendicular to the vertical direction. The elbow clamp handle is movably connected to the elbow clamp lever to drive the elbow clamp lever to swing.

3. The electrode tab first-piece welding verification fixture according to claim 1, characterized in that, The pressure head assembly (3) also includes a plurality of guide bolts (323) extending in the vertical direction, the thread of the guide bolts (323) passing through the bearing member (31) and screwed to the pressure head (32).

4. The electrode tab first-piece welding verification fixture according to claim 3, characterized in that, The pressure head assembly (3) also includes an elastic element (324), one end of which abuts against the pressure head (32) and the other end of which abuts against the support element (31).

5. The electrode tab first-piece welding verification fixture according to claim 4, characterized in that, The elastic element (324) is sleeved on the outside of the guide bolt (323), and the bottom end of the bearing member (31) is recessed with a limiting blind hole (313) corresponding to the elastic element (324). Each elastic element (324) is partially placed in one of the limiting blind holes (313) and abuts against the top wall of the limiting blind hole (313).

6. The electrode tab first-piece welding verification fixture according to claim 1, characterized in that, The bearing member (31) has a first clearance hole (311) extending vertically; and / or, The pressure head (32) has a second clearance hole (321) extending vertically.

7. The electrode tab first-piece welding verification fixture according to claim 6, characterized in that, The outer wall of the pressure head (32) is provided with a plurality of heat dissipation holes (322), which are connected to the second clearance hole (321).

8. The electrode tab first-piece welding verification fixture according to claim 1, characterized in that, The support member (31) has a plurality of guide holes (312) through it, and a guide rod (231) is fixedly connected to the top end of the support plate (23). The number of guide rods (231) is the same as the number of guide holes (312), and each guide hole (312) is guided and engaged with one guide rod (231).

9. The electrode tab first-piece welding verification fixture according to claim 1, characterized in that, The electrode first piece welding verification fixture also includes a fixed base (21) and several support members (22) extending in the vertical direction. One end of the support member (22) is detachably connected to the bottom end of the bearing plate (23), and the other end is detachably connected to the top end of the fixed base (21).

10. The electrode tab first-piece welding verification fixture according to any one of claims 1-9, characterized in that, The bearing plate (23) has a limiting groove on the side facing the pressure head (32), the welding copper busbar (12) is limited in the limiting groove, and the corner of the limiting groove is provided with a round groove (233).

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