Converging disc welding device

Abstract

The utility model discloses a confluence plate welding device which comprises a vertically-arranged supporting frame, a bracket used for vertically placing a roll core is arranged on the supporting frame, a positioning seat used for placing a confluence plate is arranged above the bracket, and the confluence plate welding device is characterized in that the positioning seat comprises two positioning plates which are symmetrically spliced; the two positioning plates are spliced to form a positioning hole and a welding hole which are integrally circular, the inner diameter of the positioning hole is matched with the diameter of a cover plate, and the inner diameter of the welding hole is matched with the diameter of a roll core; a receding groove communicated with the positioning hole and the welding hole is formed between the positioning hole and the welding hole, and the width of the receding groove is consistent with the width of a flow guide handle of the confluence disc. The welding fixture has the advantages of being reasonable in structural design, capable of positioning the confluence plate, beneficial to guaranteeing welding quality and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a busbar welding device. Background Art

[0002] At present, with the rapid development of the new energy industry, society's requirements for the energy density, safety performance, and fast charging performance of lithium-ion batteries have been further improved. As a highly recognized solution, large cylindrical batteries have ushered in a broad market space. As a circuit connection part on the battery core, the busbar needs to be installed in the shell together with the core. The concentricity of the busbar and the core will directly affect the subsequent assembly accuracy. For a single circular busbar, it can be positioned through a circular hole, and for the busbar 7 connected to the cover plate 6, and the shape of the busbar 7 is not circular, such as Figure 1 As shown, how to locate it becomes an urgent problem to be solved. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a busbar welding device with a reasonable structural design, which can position the busbar and is conducive to ensuring the welding quality.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A busbar welding device comprises a vertically arranged support frame, on which a bracket for vertically placing a winding core is arranged, and above the bracket a positioning seat for placing the busbar is arranged, characterized in that the positioning seat comprises two symmetrically spliced ​​positioning plates, and a circular positioning hole and a welding hole are formed between the two positioning plates, the inner diameter of the positioning hole matches the diameter of the cover plate, and the inner diameter of the welding hole matches the diameter of the winding core; a makeshift groove is provided between the positioning hole and the welding hole, and the width of the makeshift groove is consistent with the width of the guide handle of the busbar.

[0006] With the above structure, the positioning holes and the welding holes are composed of symmetrically arranged positioning plates, that is, the opposite sides of the two positioning plates have half holes corresponding to the positioning holes and the welding holes. Since the inner diameter of the positioning holes matches the diameter of the cover plate, and the width of the clearance groove is consistent with the width of the guide handle, the cover plate is placed in the positioning hole, and the guide handle is placed in the clearance groove. The position of the busbar in the welding hole is uniquely determined, so that the busbar can be accurately welded, which is beneficial to ensuring the welding quality.

[0007] Furthermore, a distance between a side of the positioning plate away from the welding hole and the center of the positioning hole is smaller than a radius of the positioning hole.

[0008] In this way, an opening is formed on the outward side of the positioning hole, and at the same time, the cover plate placed in the positioning hole will protrude outside the positioning plate, making it easier to hold during welding.

[0009] Furthermore, the support frame has a transversely arranged positioning mechanism, the positioning mechanism includes a guide mechanism transversely arranged on the support frame, two slidable slides are arranged on the guide mechanism, and the support frame is provided with a linear drive mechanism for driving the two slides to move synchronously in opposite directions; the two positioning plates are respectively installed on the two slides.

[0010] Furthermore, the guide mechanism is two guide rails arranged side by side on the support frame.

[0011] Furthermore, the linear drive mechanism includes two screw rods with opposite rotation directions and coaxially connected, and the screw rods are arranged parallel to the guide mechanism; the two slide seats are respectively connected to the screw rod nuts of the two screw rods; one end of the screw rod is connected to a drive motor.

[0012] Furthermore, the support frame has a vertically arranged linear telescopic mechanism, the linear telescopic mechanism has a vertically arranged base plate, and the positioning mechanism and the bracket are both arranged on the base plate; the upper end of the support frame has a cylindrical welding pressure head, the welding pressure head has a coaxially penetrating welding cavity, and the lower end diameter of the welding pressure head is smaller than the inner diameter of the welding hole.

[0013] Furthermore, the linear telescopic mechanism includes two vertically arranged slide rails and a telescopic cylinder arranged vertically upward, the base plate is slidably mounted on the two slide rails, and the telescopic end of the telescopic cylinder is connected to the base plate.

[0014] Furthermore, the welding cavity has a plurality of spokes arranged along the axial line, and the bottom of the spoke is flush with the bottom of the welding pressure head to form a crimping surface; one side of the spoke extends radially to the inner wall of the welding cavity and divides the welding cavity into multiple parts, and the inner wall of the welding cavity has air inlet holes arranged one by one corresponding to the welding cavities.

[0015] In summary, the utility model has the advantages of reasonable structural design, being able to position the busbar, and being beneficial to ensuring welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the busbar and the cover plate.

[0017] Figure 2 It is a schematic diagram of the overall structure of this embodiment.

[0018] Figure 3 It is a structural schematic diagram of the welding pressure head.

[0019] Figure 4 It is a schematic diagram of the coordination between the busbar and the positioning seat. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the embodiments.

[0021] When implementing: Figure 2 to Figure 4 As shown, a busbar welding device comprises a vertically arranged support frame 1, on which a bracket 11 for vertically placing a winding core is arranged, and above the bracket 11 a positioning seat 2 for placing the busbar is arranged, and the positioning seat 2 comprises two symmetrically spliced ​​positioning plates, and a circular positioning hole 21 and a welding hole 22 are formed between the two positioning plates, the inner diameter of the positioning hole 21 matches the diameter of the cover plate, and the inner diameter of the welding hole 22 matches the diameter of the winding core; a communicating groove 23 is provided between the positioning hole 21 and the welding hole 22, and the width of the groove 23 is consistent with the width of the guide handle of the busbar; the distance between the side of the positioning plate away from the welding hole 22 and the center of the positioning hole 21 is less than the radius of the positioning hole 21.

[0022] The support frame 1 has a transversely arranged positioning mechanism 3, which includes a guide mechanism 31 transversely arranged on the support frame 1, on which two slidable slides 32 are arranged, and the support frame 1 is provided with a linear drive mechanism for driving the two slides 32 to move synchronously in opposite directions; the two positioning plates are respectively mounted on the two slides 32. Figure 2 As shown, the guide mechanism 31 is two guide rails arranged side by side on the support frame 1. The linear drive mechanism includes two screw rods with opposite rotation directions and coaxially connected, and the screw rods are arranged in parallel with the guide mechanism 31; the two slide seats 32 are respectively connected to the screw rod nuts of the two screw rods; one end of the screw rod is connected to a driving motor.

[0023] The support frame 1 has a vertically arranged linear telescopic mechanism 4, and the linear telescopic mechanism 4 has a vertically arranged bottom plate 12, and the positioning mechanism 3 and the bracket 11 are both arranged on the bottom plate 12; the upper end of the support frame 1 has a cylindrical welding pressure head 5, and the welding pressure head 5 has a coaxially penetrating welding cavity, and the lower end diameter of the welding pressure head 5 is smaller than the inner diameter of the welding hole 22. The linear telescopic mechanism 4 includes two vertically arranged slide rails and a vertically upwardly arranged telescopic cylinder, and the bottom plate 12 is slidably mounted on the two slide rails, and the telescopic end of the telescopic cylinder is connected to the bottom plate 12.

[0024] The welding cavity has a plurality of spokes arranged along the axis, the bottom of the spoke is flush with the bottom of the welding pressure head to form a crimping surface; one side of the spoke extends radially to the inner wall of the welding cavity and divides the welding cavity into multiple parts, and the inner wall of the welding cavity has air inlet holes arranged one by one corresponding to the welding cavities.

[0025] When welding, the coil core is placed vertically on the bracket, and then the two slides are driven by the driving motor to move relative to each other, the positioning plates on the slides are assembled into positioning seats, the cover plate on the busbar is aligned with the positioning hole, the guide handle between the busbar and the cover plate is placed in the clearance groove, and the bottom plate is driven by the linear telescopic mechanism to drive the bracket and the positioning mechanism to rise together, and abut against the pressure head to complete the positioning. The welding gun enters the welding chamber to weld the busbar.

[0026] After welding is completed, the linear telescopic mechanism drives the bottom plate to drive the bracket and the positioning mechanism to descend together, and the driving motor drives the two slides to move back to each other to open the positioning seat, thereby facilitating material unloading.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A busbar welding device, comprising a vertically arranged support frame (1), a bracket (11) for vertically placing a winding core being arranged on the support frame (1), a positioning seat (2) for placing a busbar being arranged above the bracket (11), characterized in that: The positioning seat (2) comprises two symmetrically assembled positioning plates, wherein the two positioning plates are assembled to form an overall circular positioning hole (21) and a welding hole (22), wherein the inner diameter of the positioning hole (21) matches the diameter of the cover plate, and the inner diameter of the welding hole (22) matches the diameter of the winding core; and a clearance groove (23) is provided between the positioning hole (21) and the welding hole (22), wherein the width of the clearance groove (23) is consistent with the width of the guide handle of the busbar.

2. The busbar welding device according to claim 1, characterized in that: The distance between a side of the positioning plate facing away from the welding hole (22) and the center of the positioning hole (21) is smaller than the radius of the positioning hole (21).

3. The busbar welding device according to claim 1, characterized in that: The support frame (1) is provided with a transversely arranged positioning mechanism (3), the positioning mechanism (3) comprising a guide mechanism (31) transversely arranged on the support frame (1), two slidable slide seats (32) being arranged on the guide mechanism (31), and a linear drive mechanism for driving the two slide seats (32) to move synchronously in opposite directions being arranged on the support frame (1); the two positioning plates are respectively mounted on the two slide seats (32).

4. The busbar welding device according to claim 3, characterized in that: The guide mechanism (31) is two guide rails arranged side by side on the support frame (1).

5. The busbar welding device according to claim 3, characterized in that: The linear drive mechanism comprises two screw rods with opposite rotation directions and coaxially connected, the screw rods being arranged in parallel with the guide mechanism (31); the two slide seats (32) are respectively connected to the screw rod nuts of the two screw rods; and one end of the screw rod is connected to a drive motor.

6. The busbar welding device according to any one of claims 3 to 5, characterized in that: The support frame (1) has a vertically arranged linear telescopic mechanism (4), the linear telescopic mechanism (4) has a vertically arranged bottom plate (12), the positioning mechanism (3) and the bracket (11) are both arranged on the bottom plate (12); the upper end of the support frame (1) has a cylindrical welding pressure head (5), the welding pressure head (5) has a coaxially penetrating welding cavity, and the diameter of the lower end of the welding pressure head (5) is smaller than the inner diameter of the welding hole (22).

7. The busbar welding device according to claim 6, characterized in that: The linear telescopic mechanism (4) comprises two vertically arranged slide rails and a telescopic cylinder arranged vertically upwards, the base plate (12) is slidably mounted on the two slide rails, and the telescopic end of the telescopic cylinder is connected to the base plate (12).

8. The busbar welding device according to claim 6, characterized in that: The welding cavity has a plurality of spokes arranged along the axis, the bottom of the spoke is flush with the bottom of the welding pressure head to form a crimping surface; one side of the spoke extends radially to the inner wall of the welding cavity and divides the welding cavity into multiple parts, and the inner wall of the welding cavity has air inlet holes arranged one by one corresponding to the welding cavities.

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