Tab welding jig

Abstract

The utility model provides a kind of tab welding fixture.The welding fixture includes: bearing plate, first clamping part and second clamping part.The top plane of bearing plate forms the placement position of the battery to be welded;First clamping part is connected with bearing plate, and first clamping part is movably arranged relative to bearing plate along the first direction;Second clamping part is oppositely arranged with first clamping part, and second clamping part is connected with bearing plate;Wherein, first clamping part has the clamping position of moving towards second clamping part to make first clamping part and second clamping part fix the tab of the battery to be welded, and first clamping part has the release position of moving in the direction away from second clamping part to release tab, when first clamping part is in clamping position, the limiting space for fixing the pole piece of the battery to be welded is formed between first clamping part and bearing plate.The present scheme solves the problem of low matching degree of welding equipment in the prior art, thereby affecting the welding quality.

Description

Technical Field

[0001] This utility model relates to the field of battery tab welding technology, and more specifically, to a tab welding fixture. Background Technology

[0002] Welding of battery tabs is a critical process in battery manufacturing, and welding fixtures are key equipment for battery welding. The function of the welding fixture is to support the battery cell and position the battery cell tabs in the welding position on the equipment. Therefore, the structural design, positioning accuracy, stability, and ease of operation of the welding fixture have a significant impact on ensuring welding quality.

[0003] Existing welding fixtures are complex in structure, inconvenient to operate, and inefficient in use. They also cannot achieve simultaneous welding of multiple battery cells, resulting in low welding efficiency.

[0004] There is currently no effective solution to the above problems. Utility Model Content

[0005] The main objective of this invention is to provide a welding fixture for electrode tabs to solve the problem of low matching degree of welding equipment in the prior art, which affects the welding quality.

[0006] To achieve the above objectives, according to one aspect of the present invention, a tab welding fixture is provided, comprising: a support plate, the top plane of which forms a placement position for placing a battery to be welded; a first clamping part connected to the support plate and movably disposed relative to the support plate along a first direction; and a second clamping part disposed opposite to the first clamping part and connected to the support plate.

[0007] The first clamping part has a clamping position that moves toward the second clamping part to fix the tab of the battery to be welded by the first clamping part and the second clamping part, and a release position that moves away from the second clamping part to release the tab. When the first clamping part is in the clamping position, a limiting space for fixing the electrode of the battery to be welded is formed between the first clamping part and the carrier plate.

[0008] Furthermore, the first direction is the thickness direction of the bearing plate.

[0009] Furthermore, the first clamping part includes a clamping body that extends along a second direction. Both ends of the clamping body along the second direction are provided with connecting rods that are movably connected to the support plate.

[0010] Furthermore, the support plate is provided with two connecting holes, and the two connecting holes are provided one-to-one with two connecting rods, with each connecting rod passing through the corresponding connecting hole.

[0011] Furthermore, the electrode welding fixture also includes a reset device, one end of which is connected to the first clamping part, and the other end of which is connected to the support plate. The reset device is used to drive the first clamping part to move from the clamping position to the release position.

[0012] Furthermore, the reset device includes two springs, which are correspondingly arranged with two connecting rods. Each spring is sleeved on the outside of the corresponding connecting rod. The first end of each spring is connected to the bearing plate, and the second end of each spring is connected to the first clamping part.

[0013] Furthermore, the second clamping part is disposed on one side of the support plate, and the second clamping part is fixedly connected to the edge of the support plate. The first clamping part and the second clamping part are disposed on the same side of the support plate.

[0014] Furthermore, along the thickness direction of the support plate, the height of the top of the second clamping part is greater than the height of the top plane of the support plate.

[0015] Furthermore, a receiving groove is provided on the side of the clamping body facing the middle of the support plate. When the first clamping part is in the clamping position, the receiving groove and the support plate together form a limiting space.

[0016] Furthermore, a safety welding strip is provided on the top of the clamping body. One end of the safety welding strip is connected to the top of the clamping body, and the other end of the safety welding strip extends away from the clamping body.

[0017] By applying the technical solution of this utility model, the precise fixing and release of the battery tabs are achieved through the design of the relative movement of the first and second clamping parts, improving the stability and accuracy of the welding process. The setting of the limiting space effectively prevents displacement of the electrode sheets during welding, further ensuring welding quality. Using this welding fixture simplifies the welding process, improves safety and welding accuracy, and is suitable for small-batch battery production, solving the problem of low matching degree of welding equipment in existing technologies, which affects welding quality. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of a first embodiment of the electrode welding fixture according to the present invention is shown.

[0020] The above figures include the following reference numerals:

[0021] 1. Support plate;

[0022] 2. First clamping part;

[0023] 3. Second clamping part;

[0024] 4. Limiting space;

[0025] 5. Connecting rod;

[0026] 6. Spring;

[0027] 7. Safety welding strips;

[0028] 11. Clamp the main body. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0032] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0033] Combination Figure 1 As shown, according to a specific embodiment of this application, a tab welding fixture is provided.

[0034] Specifically, the welding fixture includes: a support plate 1, a first clamping part 2, and a second clamping part 3. The top plane of the support plate 1 forms a placement position for placing the battery to be welded; the first clamping part 2 is connected to the support plate 1 and is movably disposed relative to the support plate 1 along a first direction; the second clamping part 3 is disposed opposite to the first clamping part 2 and is connected to the support plate 1.

[0035] The first clamping part 2 has a clamping position that moves toward the second clamping part 3 so that the first clamping part 2 and the second clamping part 3 fix the tab of the battery to be welded, and the first clamping part 2 has a release position that moves away from the second clamping part 3 to release the tab. When the first clamping part 2 is in the clamping position, a limiting space 4 for fixing the electrode of the battery to be welded is formed between the first clamping part 2 and the carrier plate 1.

[0036] By applying the technical solution of this utility model, the precise fixing and release of the battery tabs are achieved through the design of the relative movement of the first clamping part 2 and the second clamping part 3, improving the stability and accuracy of the welding process. The setting of the limiting space 4 effectively prevents the displacement of the electrode sheet during the welding process, further ensuring the welding quality. Using this welding fixture simplifies the welding process, improves safety and welding accuracy, and is suitable for small-batch battery production. It solves the problem of low matching degree of welding equipment in the prior art, which affects the welding quality.

[0037] Specifically, the first direction is the thickness direction of the support plate 1, that is, the direction perpendicular to the top plane of the support plate 1. By moving the first clamping part 2 along the thickness direction of the support plate 1, the fixing and releasing of the electrode tab can be controlled more precisely, reducing welding defects caused by improper operation and improving the consistency and reliability of welding.

[0038] The top surface of the support plate 1 forms the position for placing the battery to be welded. The support plate 1 is designed to have sufficient strength and stability to withstand the battery and the pressure generated during the welding process. The top surface of the support plate 1 is flat to ensure that the battery to be welded can be placed stably.

[0039] Furthermore, the first clamping part 2 includes a clamping body 11, which extends along a second direction. Connecting rods 5 are provided at both ends of the clamping body 11 along the second direction, and the connecting rods 5 are movably connected to the support plate 1. This structural design makes the movement of the first clamping part 2 more stable, better adaptable to different sizes of tabs, and improves the versatility and flexibility of the clamp.

[0040] like Figure 1As shown, the clamping body 11 is an elongated structure, with the second direction being its length. The clamping body 11 extends along this second direction to provide sufficient coverage area, ensuring that the tabs are clamped evenly and stably before welding. The connecting rods 5 at both ends are movably connected to the support plate 1, ensuring that the first clamping part 2 can move smoothly along the first direction when clamping or releasing the tabs, without affecting the battery's position on the support plate 1. This design improves operational convenience and welding accuracy. Simultaneously, the mobility of the connecting rods 5 ensures the adaptability of the first clamping part 2 to different battery sizes, enhancing the versatility of the clamp.

[0041] Optionally, two through holes are provided at both ends of the clamping body 11, and the connecting rods 5 at both ends pass through the two through holes, thereby movably connecting the clamping body 11 and the connecting rods 5.

[0042] Specifically, the support plate 1 is provided with two connecting holes, and the two connecting holes are provided one-to-one with two connecting rods 5, with each connecting rod 5 passing through the corresponding connecting hole. Through the cooperation of the connecting holes and connecting rods, the stability and positioning accuracy of the first clamping part 2 during the movement process can be ensured, avoiding welding quality problems caused by unstable movement of the clamping part.

[0043] It should be further explained that, in this embodiment, the connecting rod 5 can be configured as a short-threaded, long-rod internal hexagonal bolt, with the outer diameter of the threaded rod matching the inner diameter of the connecting hole, allowing it to slide within the hole, while the thread design facilitates the fixed connection with the first clamping part 2.

[0044] Furthermore, the electrode welding fixture also includes a reset device. One end of the reset device is connected to the first clamping part 2, and the other end is connected to the support plate 1. The reset device is used to drive the first clamping part 2 from the clamping position to the release position. The reset device enables the fixture to automatically release the electrode after welding is completed. The automatic operation of the reset device not only improves production efficiency but also reduces the labor intensity of operators.

[0045] Specifically, the reset device includes two springs 6, each corresponding to one of the two connecting rods 5. Each spring 6 is sleeved on the outside of its corresponding connecting rod 5. The first end of each spring 6 is connected to the bearing plate 1, and the second end of each spring 6 is connected to the first clamping part 2. As a reset device, the spring 6 has a simple structure, low cost, and provides a stable reset force, ensuring the accurate reset of the first clamping part 2.

[0046] like Figure 1As shown, each connecting hole on the support plate 1 has a fixing point, such as a small metal bracket welded to the support plate 1. The first end of the spring 6 is connected to these brackets by a hook or fixing pin, while the second end of the spring 6 is fixed to the corresponding position on the first clamping part 2, such as the end of the clamping body 11. In its natural state, the spring 6 keeps the first clamping part 2 in the released position. When the operator manually presses down on the first clamping part 2 to clamp the electrode tab, the spring 6 is compressed and stores elastic potential energy. Once the operator releases the first clamping part 2, the spring 6 immediately releases its potential energy, pushing the first clamping part 2 to quickly return from the clamping position to the released position along the axis of the connecting rod 5, thereby automatically releasing the electrode tab and preparing for the next welding.

[0047] Optionally, the dimensions of spring 6 must correspond one-to-one with the outer diameter of connecting rod 5, and its compression stroke must be able to accommodate the movement distance of the first clamping part 2 from the release position to the clamping position. The material of spring 6 should have good elasticity and durability, such as 65Mn or stainless steel, to ensure stable recovery performance even after long-term use. During operation, the automatic reset function of the spring greatly improves welding efficiency, reduces the operator's labor intensity, and also provides a guarantee for safe operation, especially when performing continuous manual welding tasks.

[0048] Specifically, the second clamping part 3 is disposed on one side of the support plate 1 and is fixedly connected to the edge of the support plate 1. The first clamping part 2 and the second clamping part 3 are disposed on the same side of the support plate 1. This layout design aims to create a compact and efficient clamping and welding environment, enabling the two first clamping parts 2 and the second clamping parts 3 to work together to stably clamp the battery tabs.

[0049] Optionally, the support plate 1 has two threaded holes on one side, and the second clamping part 3 is fixedly connected to the edge of the support plate 1 by bolts.

[0050] The clamping surface of the second clamping part 3 is designed as a flat or slightly curved clamping surface to adapt to the curved surface characteristics of the battery tabs and enhance the clamping tightness. The first clamping part 2 can be moved vertically along the support plate 1 by manual operation to form an effective clamp with the second clamping part 3. During use, the operator first positions the battery tabs between the first clamping part 2 and the second clamping part 3, then manually presses down on the first clamping part 2 so that it works together with the second clamping part 3 to stably clamp the tabs. Ultrasonic welding is then performed. After welding is completed, the first clamping part 2 automatically returns to the release position under the drive of the reset device, and the operator can easily remove the battery to proceed to the next operation.

[0051] Specifically, along the thickness direction of the support plate 1, the height of the top of the second clamping part 3 is greater than the height of the top plane of the support plate 1. This design allows the second clamping part 3 to better cooperate with the first clamping part 2, forming a tighter clamp, avoiding displacement of the electrode tab during the welding process, and improving the welding quality.

[0052] The top of the second clamping part 3 is positioned higher than the top plane of the support plate 1 in the thickness direction. This design aims to provide better positioning and clamping effect during electrode welding operations. By designing the top of the second clamping part 3 to be slightly higher, it is ensured that the electrode can be accurately positioned between the top edge of the second clamping part 3 and the first clamping part when the electrode is clamped, forming a stable and safe welding interface and preventing the electrode from moving or misaligning during the welding process.

[0053] Furthermore, a receiving groove is provided on the side of the clamping body 11 facing the middle of the support plate 1. When the first clamping part 2 is in the clamping position, the receiving groove and the support plate 1 together form a limiting space 4. By forming the limiting space 4, the risk of damage to the electrode tab during welding is reduced, while the operation steps are simplified and production efficiency is improved.

[0054] In this embodiment, a receiving groove is designed on the side of the clamping body 11 facing the middle of the support plate 1. When the first clamping part 2 moves to the clamping position, the receiving groove and the support plate together form a limiting space 4. The limiting space 4 is used to place the battery electrode, thereby accurately fixing the battery tab to the top protrusion of the second clamping part 3, ensuring the stability of the tab during the welding process, and preventing it from moving or deforming.

[0055] Optionally, the receiving groove is typically elongated, and its length and depth can accommodate the size of different battery cell electrodes. When the upper pressure block is pressed down, the receiving groove can precisely align with the position of the battery cell electrode, so that the electrode tab is not obstructed by the electrode during the pressing process, and can be pressed into contact with the support plate 1 or the second clamping part 3 to form a stable welding interface.

[0056] When the first clamping part 2 moves to the clamping position aligned with the second clamping part 3 on the support plate 1, the pressing surface of the first clamping part 2 and the limiting structure on the support plate 1 (usually the protruding edge or support surface of the second clamping part 3) work together to stabilize the battery cell electrode within the limiting space. The design of the limiting space ensures that the electrode tab can be fully clamped during the welding process, while the electrode remains undamaged, improving welding efficiency and quality.

[0057] Specifically, a safety welding strip 7 is provided on the top of the clamping body 11. One end of the safety welding strip 7 is connected to the top of the clamping body 11, and the other end of the safety welding strip 7 extends away from the clamping body 11. The use of the safety welding strip 7 avoids damage to the clamping fixture caused by high temperatures during the welding process, extends the service life of the clamping fixture, and reduces the frequency of clamping fixture replacement. This has a significant effect on reducing production costs and improving production efficiency.

[0058] The primary function of the safety welding strip 7 is to protect the operator from potential injury from welding equipment. During manual welding operations, the operator may inadvertently place their hand within the working range of the welding head, especially when the welding head is pressed down rapidly, posing a safety hazard. By incorporating the safety welding strip 7 at the top of the clamping body 11, a physical barrier is formed, ensuring that the operator's hand remains in a safe position at all times, significantly reducing safety risks during operation and improving operational safety.

[0059] The welding fixture is used to weld electrode tabs, and the following steps are performed:

[0060] Step 1: Place the square battery on the support plate 1, adjust the position of the battery cell, place the battery cell electrode in the limiting space 4 formed by the receiving groove and the support plate 1, and position the first clamping part 2 in the clamping position so that the battery electrode tab is placed between the pressing surface of the first clamping part 2 and the protruding edge or support surface of the second clamping part 3.

[0061] Step 2: Place both hands on the safety welding strip 7 and slowly press down on the first clamping part 2. The receiving groove of the first clamping part 2 and the bearing plate 1 work together to properly contain the battery cell electrode, ensuring that the electrode tab is stably pressed against the pressing surface of the first clamping part 2 and the protruding edge of the second clamping part 3, so as to achieve sufficient pressure to fix the position of the electrode tab.

[0062] Step 3: Ensure the operator's hands do not extend beyond the safety welding strip 7 and remain at a safe distance. Step on the start switch of the ultrasonic welding machine to begin the welding program. At this time, the welding head of the ultrasonic welding machine will automatically press down, contacting the welding interface formed by the first clamping part 2 and the second clamping part 3 to perform ultrasonic welding.

[0063] Step 4: Observe the welding process to ensure that the welding is completed smoothly without any abnormalities. After welding is completed, release the pressure applied to the first clamping part 2. At this time, under the action of the spring 6, the first clamping part 2 will automatically return to the release position, and the electrode will be released at the same time. Check the welding results to confirm that the electrode tabs are firmly welded without loosening, damage, or overheating.

[0064] Step 5: Remove the welded battery from the carrier plate 1, ready for the next step of battery assembly or inspection.

[0065] Repeat steps 1 to 4 to perform the same soldering operation on the next battery until all batteries have been soldered.

[0066] These steps ensure the safety, efficiency, and precision of tab welding using this technical solution, representing a significant technological innovation that can greatly improve welding quality and production efficiency in battery manufacturing. The meticulously designed fixture structure not only solves the problems of tab positioning and clamping before welding but also effectively protects operator safety, demonstrating the comprehensiveness and practicality of this solution in its implementation.

[0067] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0068] 1. By designing the relative movement of the first clamping part 2 and the second clamping part 3, the precise fixing and release of the battery tabs are achieved, improving the stability and accuracy of the welding process.

[0069] 2. The clamping body has a receiving groove on the side facing the middle of the support plate and a safety welding strip on the top of the clamping body. The receiving groove and the support plate together form a limiting space 4. The formation of the limiting space can ensure that the battery cell tabs are stably and accurately pressed before welding, and at the same time the electrode is placed in the receiving groove, avoiding welding defects caused by tab position deviation or insufficient pressing. This further enhances the positioning accuracy of the tabs during the welding process, ensures the consistency and reliability of welding, and thus significantly improves the welding quality and accuracy.

[0070] 3. The innovative design of the safety welding strip effectively isolates the operator's hands from the working area of ​​the ultrasonic welding head, greatly reducing the risk of injury caused by the operator's hands accidentally entering the downward pressure path of the welding head during manual welding. Furthermore, the automatic reset mechanism of the upper pressure block and its ease of manual operation reduce the physical burden on the operator during welding, improving operational comfort and safety.

[0071] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0072] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0073] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0074] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A welding fixture for electrode tabs, characterized in that, include: The top plane of the support plate (1) forms a placement position for placing the battery to be welded; A first clamping part (2) is connected to the support plate (1) and is movably disposed relative to the support plate (1) along a first direction; The second clamping part (3) is disposed opposite to the first clamping part (2) and is connected to the support plate (1); The first clamping part (2) has a clamping position that moves toward the second clamping part (3) to fix the tab of the battery to be welded by the first clamping part (2) and the second clamping part (3), and a release position that moves away from the second clamping part (3) to release the tab. When the first clamping part (2) is in the clamping position, a limiting space (4) for fixing the electrode of the battery to be welded is formed between the first clamping part (2) and the carrier plate (1).

2. The electrode lug welding fixture according to claim 1, characterized in that, The first direction is the thickness direction of the bearing plate (1).

3. The electrode lug welding fixture according to claim 2, characterized in that, The first clamping part (2) includes a clamping body (11), which extends along a second direction. Both ends of the clamping body (11) along the second direction are provided with connecting rods (5), and the connecting rods (5) are movably connected to the bearing plate (1).

4. The electrode lug welding fixture according to claim 3, characterized in that, The support plate (1) is provided with two connecting holes, and the two connecting holes are provided in a one-to-one correspondence with the two connecting rods (5), and each connecting rod (5) passes through the corresponding connecting hole.

5. The electrode lug welding fixture according to claim 3, characterized in that, The electrode welding fixture also includes a reset device. One end of the reset device is connected to the first clamping part (2), and the other end of the reset device is connected to the bearing plate (1). The reset device is used to drive the first clamping part (2) to move from the clamping position to the release position.

6. The electrode lug welding fixture according to claim 5, characterized in that, The reset device includes two springs (6), which are arranged correspondingly to the two connecting rods (5). Each spring (6) is sleeved on the outside of the corresponding connecting rod (5). The first end of each spring (6) is connected to the bearing plate (1), and the second end of each spring (6) is connected to the first clamping part (2).

7. The electrode lug welding fixture according to claim 3, characterized in that, The second clamping part (3) is disposed on one side of the support plate (1), and the second clamping part (3) is fixedly connected to the edge of the support plate (1). The first clamping part (2) and the second clamping part (3) are disposed on the same side of the support plate (1).

8. The electrode lug welding fixture according to claim 7, characterized in that, Along the thickness direction of the support plate (1), the height of the top of the second clamping part (3) is greater than the height of the top plane of the support plate (1).

9. The electrode lug welding fixture according to claim 7, characterized in that, The clamping body (11) has a receiving groove on one side facing the middle of the support plate (1). When the first clamping part (2) is in the clamping position, the receiving groove and the support plate (1) together form the limiting space (4).

10. The electrode lug welding fixture according to claim 3, characterized in that, The top of the clamping body (11) is provided with a safety welding strip (7), one end of the safety welding strip (7) is connected to the top of the clamping body (11), and the other end of the safety welding strip (7) extends away from the clamping body (11).

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