A laser welding fixture integrated with busbars

Abstract

The utility model relates to integrated busbar processing technical field especially, relates to a kind of laser welding fixture of integrated busbar, including base, pressing plate and upper cover plate, the top middle of base is equipped with first positioning slot, the top of base is provided with a plurality of first positioning column, first positioning column is located the front and back sides of first positioning slot, a plurality of first positioning holes are provided on pressing plate, welding avoidance hole is provided on pressing plate, upper cover plate is provided with a plurality of positioning seat, positioning seat is equipped with laser welding hole, welding avoidance hole and laser welding hole are correspondingly set, welding seat is provided with lower pressing block, and lower pressing block is located at the edge of laser welding hole.The utility model can accurately fix the installation position of insulation support and nickel sheet in integrated busbar, avoid the welding deviation or virtual welding caused by component displacement during welding process, welding avoidance hole and laser welding hole form accurate laser beam channel, lower pressing block can exert local pressure on the area near welding point in welding instant, ensure that weld is flat and firm.

Description

Technical Field

[0001] This utility model relates to the field of integrated busbar processing technology, and in particular to a laser welding fixture for integrated busbars. Background Technology

[0002] In fields such as new energy vehicles, energy storage systems, and power electronic equipment, integrated busbar assemblies are key components for achieving efficient conductivity between multiple electrical connection nodes. Their manufacturing precision and connection reliability directly affect the electrical performance and safety stability of the entire system. Integrated busbars are typically composed of multiple nickel sheets fixed to an insulating support by welding. Laser welding is widely used in the precision connection process of busbar assemblies due to its advantages such as concentrated energy, small heat-affected zone, aesthetically pleasing welds, and ease of automation control.

[0003] During laser welding, to ensure precise positioning of each nickel sheet and the support, and to prevent welding deformation or misalignment, specialized fixtures must be used to position and clamp the busbar assembly. However, existing busbar welding fixtures generally suffer from complex structures, insufficient positioning accuracy, and low clamping efficiency. Some fixtures rely solely on simple clamping mechanisms, which cannot effectively restrict the busbar, leading to minor displacements during welding and affecting weld consistency. Utility Model Content

[0004] The present invention aims to at least solve the technical problems existing in the prior art. To this end, the present invention proposes a laser welding fixture for integrated busbars, which has a reasonable structure, precise positioning, and improves welding quality.

[0005] According to some embodiments of the present invention, a laser welding fixture for an integrated busbar includes a base, a pressure plate, and a top cover plate. A first positioning groove is formed in the center of the top of the base. Multiple first positioning posts are provided on the top of the base, each located on the front and rear sides of the first positioning groove. Multiple first positioning holes are provided on the pressure plate, each corresponding to one of the first positioning posts. Welding clearance holes are provided on the pressure plate. Multiple positioning seats are provided on the top cover plate, each with a laser welding hole. The welding clearance holes correspond to the laser welding holes. A lower pressure block is provided on the welding seat, located at the edge of the laser welding hole.

[0006] A laser welding fixture for an integrated busbar according to some embodiments of the present invention has at least the following beneficial effects:

[0007] This invention achieves dual positioning with a unified reference by setting a first positioning groove and multiple first positioning posts on the base, in conjunction with the first positioning holes on the pressure plate. This accurately fixes the installation position of the insulating bracket and nickel sheet in the integrated busbar, avoiding welding misalignment or incomplete welding caused by component displacement during the welding process. The welding avoidance holes on the pressure plate correspond one-to-one with the laser welding holes on the upper cover plate positioning seat, forming a precise laser beam channel. This ensures that the laser can act on the welding point position without obstruction, avoiding interference of the optical path by traditional fixtures, improving welding accessibility and process flexibility. The pressure block set on the edge of the laser welding hole can apply local pressure to the area near the welding point at the moment of welding, effectively suppressing local warping or deformation of the material caused by the high temperature of the laser, ensuring a flat and firm weld, and further improving the connection strength and electrical conductivity.

[0008] According to some embodiments of the present invention, a laser welding fixture for an integrated busbar is provided, wherein a plurality of hinges are provided between the rear side of the base and the rear side of the upper cover plate, and a lock is provided between the front side of the base and the front side of the upper cover plate.

[0009] According to some embodiments of the present invention, a laser welding fixture for an integrated busbar is provided with gas springs between the left and right sides of the base and the two sides of the upper cover plate.

[0010] According to some embodiments of the present invention, a laser welding fixture for an integrated busbar is provided with a handle on the front side of the upper cover plate.

[0011] According to some embodiments of the present invention, a laser welding fixture for an integrated busbar is provided on the top of the base, wherein the second positioning posts are located between the first positioning groove and the first positioning post, and the pressure plate is provided with a plurality of second positioning holes, wherein the second positioning holes are provided in a one-to-one correspondence with the second positioning posts.

[0012] According to some embodiments of the present invention, a laser welding fixture for an integrated busbar is provided, wherein two first positioning slots are provided, and the two first positioning slots are arranged in parallel.

[0013] According to some embodiments of the present invention, a laser welding fixture for an integrated busbar is provided on the base, the positioning block is located on the front and rear sides of the first positioning groove, and the pressure plate is provided with a positioning groove on the side close to the first positioning groove, the positioning groove being correspondingly provided with the positioning block.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure One .

[0017] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure Two .

[0018] Figure 3 This is a schematic diagram of the structure of this utility model embodiment with the top cover plate removed.

[0019] Figure 4 This is a schematic diagram of the structure of this utility model after the integrated busbar is installed and the top cover is hidden.

[0020] Figure 5 This is a schematic diagram of the structure of the pressure plate in an embodiment of the present utility model.

[0021] Figure 6 This is a schematic diagram of the positioning seat according to an embodiment of the present utility model.

[0022] Reference numerals: 1. Base, 2. Pressure plate, 3. Top cover plate, 4. First positioning groove, 5. First positioning post, 6. First positioning hole, 7. Welding clearance hole, 8. Positioning seat, 9. Laser welding hole, 10. Lower pressure block, 11. Hinge, 12. Lock, 13. Gas spring, 14. Handle, 15. Second positioning post, 16. Second positioning hole, 17. Positioning block, 18. Positioning groove. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of the 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.

[0024] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, left, right, front, and back, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module 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.

[0025] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] like Figures 1-6 As shown, this embodiment of the present invention provides a laser welding fixture for an integrated busbar.

[0028] A laser welding fixture for integrated busbars includes a base 1, a pressure plate 2, and a top cover plate 3. The base 1 has a first positioning groove 4 in the middle of its top. The top of the base 1 is provided with a plurality of first positioning posts 5, which are located on the front and rear sides of the first positioning groove 4. The pressure plate 2 is provided with a plurality of first positioning holes 6, which are arranged one-to-one with the first positioning posts 5. The pressure plate 2 is provided with welding avoidance holes 7. The top cover plate 3 is provided with a plurality of positioning seats 8, which are provided with laser welding holes 9. The welding avoidance holes 7 are arranged corresponding to the laser welding holes 9. The positioning seats 8 are provided with a lower pressure block 10, which is located at the edge of the laser welding hole 9.

[0029] This invention achieves dual positioning with a unified reference by setting a first positioning groove 4 and multiple first positioning posts 5 on the base 1, in conjunction with the first positioning hole 6 on the pressure plate 2. This accurately fixes the installation position of the insulating bracket and nickel sheet in the integrated busbar, avoiding welding deviation or incomplete welding caused by component displacement during the welding process. The welding avoidance hole 7 on the pressure plate 2 and the laser welding hole 9 on the positioning seat 8 of the upper cover plate 3 are set one-to-one to form a precise laser beam channel, ensuring that the laser can act on the welding point position without obstruction, avoiding interference of the optical path by traditional fixtures, and improving welding accessibility and process flexibility. The lower pressure block 10 is set on the edge of the laser welding hole 9, which can apply local pressure to the area near the welding point at the moment of welding, effectively suppressing local warping or deformation of the material caused by the high temperature of the laser, ensuring that the weld is flat and firm, and further improving the connection strength and electrical conductivity.

[0030] In some embodiments, the pressure plate 2 is made of manganese steel sheet.

[0031] This embodiment describes a laser welding fixture for an integrated busbar. Multiple hinges 11 are provided between the rear side of the base 1 and the rear side of the upper cover plate 3, and a lock 12 is provided between the front side of the base 1 and the front side of the upper cover plate 3. Specifically, the base 1 and the upper cover plate 3 are hinged together via the multiple hinges 11 on the rear side, and the lock 12 on the front side allows the upper cover plate 3 to be flipped open and closed relative to the base 1, facilitating the quick loading and unloading of workpieces. The lock 12 ensures the stability of the upper cover plate 3 after it is clamped, preventing loosening during the welding process.

[0032] This embodiment describes a laser welding fixture for an integrated busbar. Gas springs 13 are installed between the left and right sides of the base 1 and the two sides of the upper cover plate 3. Specifically, the gas springs 13 added between the base 1 and the left and right sides of the upper cover plate 3 allow the upper cover plate 3 to automatically and smoothly spring up when the lock 12 is released, reducing the manual opening force and preventing damage to the equipment or workpiece due to misoperation. Simultaneously, the gas springs 13 provide a buffering function, preventing violent impacts to the upper cover plate 3 during opening and closing, extending the fixture's service life, and improving operational safety and ergonomics.

[0033] The laser welding fixture for integrated busbars described in this embodiment has a handle 14 on the front side of the upper cover plate 3. Specifically, the handle 14 on the front side of the upper cover plate 3 facilitates the operator to grip and manually flip the upper cover plate 3, enabling rapid opening and closing.

[0034] This embodiment describes a laser welding fixture for an integrated busbar. The base 1 has multiple second positioning posts 15 on its top, located between the first positioning groove 4 and the first positioning post 5. The pressure plate 2 has multiple second positioning holes 16, each corresponding to a second positioning post 15. Specifically, adding multiple second positioning posts 15 to the base 1 and correspondingly providing second positioning holes 16 on the pressure plate 2 forms an additional auxiliary positioning structure, further improving the positioning accuracy of the pressure plate 2 and preventing it from shifting during assembly. This multi-point positioning layout enhances the overall assembly stability of the fixture, ensuring precise alignment between the welding clearance hole 7 and the laser welding hole 9, thereby guaranteeing the accuracy and consistency of the laser welding path.

[0035] This embodiment describes a laser welding fixture for an integrated busbar. Two first positioning slots 4 are provided, arranged in parallel. Specifically, the two parallel first positioning slots 4, in conjunction with the elongated positioning protrusions of the busbar, enable better positioning.

[0036] This embodiment describes a laser welding fixture for an integrated busbar. A positioning block 17 is provided on the base 1, located on both the front and rear sides of the first positioning groove 4. A positioning groove 18 is provided on the side of the pressure plate 2 closest to the first positioning groove 4, corresponding to the positioning block 17. Specifically, the positioning block 17 on the base 1 and the positioning groove 18 at the corresponding position on the pressure plate 2 further constrain the lateral movement freedom of the integrated busbar assembly. This structure enhances the overall clamping rigidity and vibration resistance, improving welding accuracy and product consistency.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A laser welding fixture for integrated busbars, characterized in that: The device includes a base, a pressure plate, and a top cover. The base has a first positioning groove in the center of its top, and multiple first positioning posts are provided on the top of the base. The first positioning posts are located on the front and rear sides of the first positioning groove. The pressure plate has multiple first positioning holes, which correspond one-to-one with the first positioning posts. The pressure plate also has welding clearance holes. The top cover has multiple positioning seats, each with a laser welding hole. The welding clearance holes correspond to the laser welding holes. Each positioning seat has a lower pressing block located at the edge of the laser welding hole.

2. The laser welding fixture for integrated busbars according to claim 1, characterized in that: Multiple hinges are provided between the rear side of the base and the rear side of the upper cover plate, and a lock is provided between the front side of the base and the front side of the upper cover plate.

3. The laser welding fixture for an integrated busbar according to claim 2, characterized in that: Gas springs are provided between the left and right sides of the base and the two sides of the upper cover plate.

4. The laser welding fixture for an integrated busbar according to claim 1, characterized in that: A handle is provided on the front side of the upper cover plate.

5. The laser welding fixture for an integrated busbar according to claim 1, characterized in that: The base has a plurality of second positioning posts on its top, which are located between the first positioning groove and the first positioning post. The pressure plate has a plurality of second positioning holes, which are configured to correspond one-to-one with the second positioning posts.

6. The laser welding fixture for an integrated busbar according to claim 1, characterized in that: There are two first positioning slots, and the two first positioning slots are arranged in parallel.

7. The laser welding fixture for an integrated busbar according to claim 1, characterized in that: The base is provided with a positioning block, which is located on the front and rear sides of the first positioning groove. The pressure plate is provided with a positioning groove on the side close to the first positioning groove, and the positioning groove is provided corresponding to the positioning block.

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