Automobile battery connecting piece welding tool

Abstract

This utility model discloses a welding fixture for automotive battery connectors, relating to the field of welding fixture technology. It includes a base, with symmetrically arranged sliding plates slidably connected inside the base, and a partition plate fixedly connected inside the base. A set of positive and negative threaded rods are rotatably connected to the partition plate. A guide rod is provided on one side of the top of the sliding plates, and a fixing mechanism is slidably connected to the guide rod. The fixing mechanism includes multiple pressure blocks, with a threaded block fixedly connected to one side of the last pressure block. This utility model, by setting up a base, sliding plates, partition plate, and positive and negative threaded rods, allows for stepless adjustment of the fixture width by rotating the positive and negative threaded rods, whose reverse threads at both ends drive the sliding plates on both sides to move synchronously in opposite directions along the first sliding groove of the base. This precisely matches the width requirements of batteries of different sizes, reduces the number of customized fixtures, and allows for synchronous adjustment by a single hand using sprockets and chains.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, specifically to a welding tooling for automotive battery connectors. Background Technology

[0002] Lithium-ion batteries are now used in various fields. A lithium-ion battery mainly consists of a positive electrode, a negative electrode, a separator between the positive and negative electrodes, and an electrolyte that conducts ions between the positive and negative electrodes. The manufacturing process of a lithium-ion battery generally includes the following steps: stirring, coating, cold pressing, cutting, winding (or stacking), electrolyte injection, formation, and capacity measurement.

[0003] However, existing battery connection welding fixtures are generally custom-made. When changing different battery cells, the battery electrode positions are also different due to the different lengths and widths of the cells. This requires the use of different molds to press the battery. The existing fixtures cannot be adjusted according to the needs of different battery cells. Therefore, a new automotive battery connector welding fixture is needed to solve the shortcomings of the existing fixtures. Utility Model Content

[0004] Technical problems to be solved

[0005] The purpose of this utility model is to solve the technical problem that battery connection welding fixtures are generally custom-made and cannot be adjusted as needed, and to provide a welding fixture for automotive battery connectors.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a welding fixture for automotive battery connectors, comprising a base, wherein symmetrically arranged sliding plates are slidably connected inside the base, and a partition is fixedly connected inside the base. A set of positive and negative threaded rods are rotatably connected to the partition. A guide rod is provided on one side of the top of the sliding plate, and a fixing mechanism is slidably connected to the guide rod. The fixing mechanism includes pressure blocks, and multiple pressure blocks are provided. A threaded block is fixedly connected to one side of the pressure block at the far end. An adjusting rod is engaged internally by the thread of the threaded block, and the adjusting rod is threaded. A clamping mechanism is provided above the sliding plate, and the clamping mechanism and the fixing mechanism are movably connected.

[0008] The present invention is further configured such that the two ends of the positive and negative threaded rods are respectively threaded to two sliding plates, the clamping mechanism includes a spring sleeve rod, the bottom end of the spring sleeve rod is fixedly connected to the top of the sliding plate, guide plates are fixedly connected to both sides of the sliding plate, and a first sliding groove is provided on both sides of the base, and the first sliding groove and the guide plate are slidably connected.

[0009] The present invention is further configured such that the fixing mechanism includes a first connecting rod and a second connecting rod, the middle of the first connecting rod and the second connecting rod are rotatably connected, one end of the first connecting rod is rotatably connected to the top of one of the adjacent pressure blocks, and the other end of the first connecting rod is slidably connected to the top of the other adjacent pressure block, one end of the second connecting rod is rotatably connected to the top of the other adjacent pressure block, and the other end of the second connecting rod is slidably connected to the top of one of the adjacent pressure blocks.

[0010] The present invention is further configured such that a second sliding groove is provided on the sliding plate, and one side of the initial end pressure block and one side of the second sliding groove are fixedly connected among the plurality of pressure blocks, and the remaining pressure blocks are slidably connected to the second sliding groove.

[0011] The present invention is further configured such that the pressing mechanism includes a pressure plate, a pressure strip, a mounting bracket and a set of crossbars, the top of the pressure plate and the bottom of the mounting bracket are fixedly connected, and the bottom of the pressure plate and the top of the pressure strip are fixedly connected, and the two ends of the crossbars are respectively fixedly connected to the top side of the two mounting brackets.

[0012] The present invention is further configured such that a force-bearing groove is provided on the top of the base, the crossbar passes through the force-bearing groove, and the crossbar is slidably connected to the force-bearing groove.

[0013] The present invention is further configured such that a sprocket is fixedly connected to one end of the positive and negative threaded rod, a chain is provided on the sprocket, and the chain and the sprocket are movably connected.

[0014] Compared with existing technologies, this automotive battery connector welding fixture has the following advantages:

[0015] I. This utility model, by setting a base, sliding plate, partition, and positive and negative threaded rods, allows for stepless adjustment of the tooling width by rotating the positive and negative threaded rods. The reverse threads at both ends of the positive and negative threaded rods drive the sliding plates on both sides to move synchronously in opposite directions along the first sliding groove of the base. This precisely matches the width requirements of batteries of different sizes. The partition is fixed inside the base and serves as a stable support shaft for the positive and negative threaded rods, ensuring that the sliding plates are subjected to uniform force when the rods rotate. This avoids offset or jamming caused by force on one side during adjustment. The tooling width can be quickly adjusted through the rod drive, making it compatible with various battery specifications and reducing the number of customized tooling components. The sprocket and chain allow for synchronous adjustment with one hand, significantly improving production efficiency.

[0016] Second, this utility model sets up a fixing mechanism, which forms a linkage structure through the hinge and sliding cooperation of the first link and the second link. This mechanism drives multiple pressure blocks to expand or retract synchronously along the guide rod, ensuring that the spacing between all pressure blocks is automatically adjusted equidistantly, accurately aligning the welding points of the battery connecting pieces, and avoiding the tedious operation of manually calibrating each one.

[0017] Third, this utility model sets up a pressing mechanism. The spring sleeve of the pressing mechanism works in conjunction with the pressure bar. When pressed down, the external cylinder pushes the mounting bracket to move the pressure plate and pressure bar down. The elastic buffer of the spring sleeve avoids rigid impact damage to the battery. When the pressure bar contacts the connecting rod and pressure block of the fixing mechanism, it further compresses the spring sleeve, and transmits the pressure evenly to all pressure blocks to ensure that the connecting piece is fully in contact with the battery surface.

[0018] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the sliding plate of this utility model;

[0021] Figure 3 This is a partially cross-sectional three-dimensional structural diagram of the present invention;

[0022] Figure 4 This is an exploded structural diagram of the base of this utility model;

[0023] Figure 5 This is a bottom-view three-dimensional structural diagram of the pressure block of this utility model;

[0024] Figure 6 This is an exploded three-dimensional structural diagram of the sliding plate and fixing mechanism of this utility model.

[0025] Figure 7 This is an exploded three-dimensional structural diagram of the positive and negative threaded rods and the base of this utility model.

[0026] In the diagram: 1. Base; 2. Sliding plate; 3. Partition plate; 4. Positive and negative threaded rods; 5. Guide rod; 6. Fixing mechanism; 601. Pressure block; 602. First connecting rod; 603. Second connecting rod; 7. Threaded block; 8. Adjusting rod; 9. Pressing mechanism; 901. Spring sleeve rod; 902. Pressure plate; 903. Pressure strip; 904. Mounting bracket; 905. Crossbar; 10. Guide plate; 11. First sliding groove; 12. Second sliding groove; 13. Force groove; 14. Sprocket; 15. Chain. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1-7 As shown, this utility model provides a technical solution: a welding fixture for automotive battery connectors, including a base 1, which serves as the basic support platform for the fixture, providing space for the sliding plate 2 to move and a partition 3 to provide fixed support. The base 1 has symmetrically arranged sliding plates 2 slidably connected inside, driven by positive and negative threaded rods 4 to achieve symmetrical movement on both sides, adapting to different battery widths. The base 1 also has a partition 3 fixedly connected inside, serving as a support shaft for the threaded rods to ensure stability during rotation. A set of positive and negative threaded rods 4 are rotatably connected to the partition 3. A guide rod 5 is provided on one side of the top of the sliding plate 2, constraining the movement direction of the fixing mechanism 6 and ensuring that the pressure block 601 moves in a straight line. The guide rod 5 is slidably connected to the fixing mechanism 6, which drives the threaded block 7 to move via an adjusting rod 8. The movable pressure block 601 unfolds or retracts along the guide rod 5 to accommodate welding points with different spacings. The fixing mechanism 6 includes multiple pressure blocks 601, and a threaded block 7 is fixedly connected to one side of the pressure block 601 at the very end. The internal threads of the threaded block 7 engage with an adjusting rod 8, and the adjusting rod 8 has threads. A pressing mechanism 9 is provided above the sliding plate 2. The pressing mechanism 9 is linked to the fixing mechanism 6 through a downward pressing action to evenly transmit pressure to all pressure blocks 601. The pressing mechanism 9 and the fixing mechanism 6 are movably connected. The width of the sliding plate 2 and the spacing of the pressure blocks 601 can be adjusted by the positive and negative threaded rods 4 and the adjusting rod 8 to adapt to different battery specifications and welding requirements. The base 1, the sliding plate 2, and the partition 3 cooperate to form a rigid frame to prevent structural deformation during pressing.

[0029] like Figure 3 As shown, the two ends of the positive and negative threaded screw 4 are respectively threaded to two sliding plates 2. When the screw rotates, the two sliding plates 2 move in opposite directions synchronously to ensure symmetrical adjustment. The clamping mechanism 9 includes a spring sleeve rod 901, which provides flexible clamping force through spring elasticity to avoid damage to the battery from hard impact. The bottom end of the spring sleeve rod 901 is fixedly connected to the top of the sliding plate 2. Guide plates 10 are fixedly connected to both sides of the sliding plate 2. The base 1 has a first sliding groove 11 on both sides, and the first sliding groove 11 and the guide plate 10 are slidably connected to restrict the movement trajectory of the sliding plate 2, prevent deviation, and enhance the overall rigidity.

[0030] like Figure 4 and Figure 6As shown, the fixing mechanism 6 also includes a first connecting rod 602 and a second connecting rod 603. The middle parts of the first connecting rod 602 and the second connecting rod 603 are rotatably connected. One end of the first connecting rod 602 is rotatably connected to the top of one of the adjacent pressure blocks 601, and the other end of the first connecting rod 602 is slidably connected to the top of the other adjacent pressure block 601. One end of the second connecting rod 603 is rotatably connected to the top of the other adjacent pressure block 601, and the other end of the second connecting rod 603 is slidably connected to the top of one of the adjacent pressure blocks 601. The linkage mechanism forces all pressure blocks 601 to move synchronously, replacing the traditional manual adjustment one by one, realizing automatic matching of the spacing between pressure blocks 601 and the position of the connecting piece, eliminating welding deviation, and improving efficiency.

[0031] like Figure 3 , Figure 4 and Figure 6 As shown, the sliding plate 2 has a second sliding groove 12, which restricts the pressure block 601 to move only along the direction of the sliding groove. At the same time, the initial pressure block 601 is used as a reference point to ensure the consistency of the adjustment direction. Among the multiple pressure blocks (601), one side of the initial pressure block 601 and one side of the second sliding groove 12 are fixedly connected. The initial pressure block 601 is fixed to simplify the adjustment logic and avoid interference from multiple degrees of freedom. The remaining pressure blocks 601 are all slidably connected to the second sliding groove 12.

[0032] like Figure 4 and Figure 6 As shown, the clamping mechanism 9 also includes a pressure plate 902, a pressure strip 903, a mounting bracket 904, and a set of crossbars 905. The top of the pressure plate 902 is fixedly connected to the bottom of the mounting bracket 904, and the bottom of the pressure plate 902 is fixedly connected to the top of the pressure strip 903. The pressure plate 902 transmits the cylinder pressure to the rubber pressure strip 903. The pressure strip 903 is set in multiple places by squeezing the connecting rod of the fixing mechanism 6, which plays a buffering role and prevents the connecting rod from deforming due to direct pressure. At the same time, the pressure strip 903 at the edge directly applies pressure to one side of the pressure block 601, so that pressure can be applied to both sides of the pressure block 601 at the same time. The height of the pressure strip 903 at the edge is higher than that of the pressure strip 903 on both sides of the connecting rod. The two ends of the crossbar 905 are fixedly connected to the top side of the two mounting brackets 904 respectively.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, a force-bearing groove 13 is provided on the top of the base 1. When the clamping mechanism 9 is reset, the crossbar 905 is inserted into the force-bearing groove 13 to form an auxiliary support point for the base 1. The crossbar 905 passes through the force-bearing groove 13 and is slidably connected to the force-bearing groove 13.

[0034] like Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, a sprocket 14 is fixedly connected to one end of the positive and negative threaded rod 4. A chain 15 is installed on the sprocket 14. The sprocket 14 is fixed to one end of the positive and negative threaded rod 4. The chain 15 covers both sprockets 14 to form a closed loop. The chain 15 and the sprocket 14 are movably connected. Through the transmission of the chain 15, the positive and negative threaded rods 4 on both sides are driven to rotate synchronously, ensuring that the sliding plate 2 moves symmetrically. The transmission of the sprocket 14 and the chain 15 eliminates the error of manual step adjustment and achieves high-precision width adaptation.

[0035] Working principle: First, rotate the sprocket 14, which drives the positive and negative threaded screws 4 on both sides to rotate synchronously through the chain 15. Since the screws have reverse threads at both ends, the two sliding plates 2 move symmetrically towards the center or both sides along the first sliding groove 11 of the base 1 under the drive of the screws. Adjust the distance between the sliding plates 2 to match the width of the battery pack. Then, use a shaft lock to lock them to prevent them from rotating after long-term use.

[0036] Rotate the adjusting rod 8 to drive the threaded block 7, which is engaged with its thread, to move along the guide rod 5. The movement of the threaded block is linked by the first connecting rod 602 and the second connecting rod 603 in the fixing mechanism 6, which drives multiple pressure blocks 601 to expand or retract synchronously in the second sliding groove 12, so that the spacing of the pressure blocks 601 is aligned with the welding point of the battery connecting piece. Then tighten the shim at one end to lock the adjusting rod 8.

[0037] Place the battery pack under the base 1, place the connecting piece on top of the battery, opposite the pressure block 601, activate the external cylinder (connecting mounting bracket 904), push the whole thing down, after the pressure block 601 presses the battery, the cylinder continues to move, driving the mounting bracket 904 down, thereby overcoming the elastic force of the spring sleeve rod 901, so that the pressure strip 903 contacts the connecting rod of the fixing mechanism 6 and the pressure block 601. At this time, the pressure block 601 ensures that the connecting piece is in close contact with the battery surface, eliminating welding gaps;

[0038] The laser passes through the reserved slot of the mounting bracket 904 to weld the connecting piece and the battery contact point. After welding, the cylinder retracts. As the retraction proceeds, the spring sleeve rod 901 releases its elastic force, and the pressure plate 902 and pressure strip 903 move upward and reset. At this time, the crossbar 905 supports the base 1 in the force groove 13, improving the overall structural strength.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for automotive battery connectors, comprising a base (1), characterized in that: The base (1) has symmetrically arranged sliding plates (2) slidably connected inside, and the base (1) has a partition plate (3) fixedly connected inside. A set of positive and negative threaded rods (4) are rotatably connected to the partition plate (3). A guide rod (5) is provided on one side of the top of the sliding plate (2). A fixing mechanism (6) is slidably connected to the guide rod (5). The fixing mechanism (6) includes a pressure block (601). Multiple pressure blocks (601) are provided. A threaded block (7) is fixedly connected to one side of the pressure block (601) at the end. An adjusting rod (8) is engaged with the internal thread of the threaded block (7). The adjusting rod (8) has a thread. A pressing mechanism (9) is provided above the sliding plate (2). The pressing mechanism (9) and the fixing mechanism (6) are movably connected.

2. The welding fixture for automotive battery connectors according to claim 1, characterized in that: The two ends of the positive and negative threaded rod (4) are respectively threaded to two sliding plates (2). The clamping mechanism (9) includes a spring sleeve rod (901). The bottom end of the spring sleeve rod (901) is fixedly connected to the top of the sliding plate (2). Guide plates (10) are fixedly connected to both sides of the sliding plate (2). The base (1) has a first sliding groove (11) on both sides, and the first sliding groove (11) and the guide plate (10) are slidably connected.

3. The welding fixture for automotive battery connectors according to claim 2, characterized in that: The fixing mechanism (6) further includes a first link (602) and a second link (603), the middle parts of the first link (602) and the second link (603) are rotatably connected, one end of the first link (602) is rotatably connected to the top of one of the adjacent pressure blocks (601), and the other end of the first link (602) is slidably connected to the top of the other adjacent pressure block (601), one end of the second link (603) is rotatably connected to the top of the other adjacent pressure block (601), and the other end of the second link (603) is slidably connected to the top of one of the adjacent pressure blocks (601).

4. The welding fixture for automotive battery connectors according to claim 1, characterized in that: The sliding plate (2) is provided with a second sliding groove (12), and one side of the initial end pressure block (601) and one side of the second sliding groove (12) are fixedly connected among the multiple pressure blocks (601), and the remaining pressure blocks (601) are slidably connected to the second sliding groove (12).

5. The welding fixture for automotive battery connectors according to claim 1, characterized in that: The pressing mechanism (9) further includes a pressure plate (902), a pressure strip (903), a mounting bracket (904), and a set of crossbars (905). The top of the pressure plate (902) is fixedly connected to the bottom of the mounting bracket (904), and the bottom of the pressure plate (902) is fixedly connected to the top of the pressure strip (903). The two ends of the crossbars (905) are respectively fixedly connected to the top side of the two mounting brackets (904).

6. The welding fixture for automotive battery connectors according to claim 5, characterized in that: The base (1) has a force-receiving groove (13) on its top, and the crossbar (905) passes through the force-receiving groove (13) and is slidably connected to the force-receiving groove (13).

7. The welding fixture for automotive battery connectors according to claim 5, characterized in that: One end of the positive and negative threaded rod (4) is fixedly connected to a sprocket (14), and a chain (15) is provided on the sprocket (14). The chain (15) and the sprocket (14) are movably connected.

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