Converter plate welding tool for cylindrical battery trial-manufacture

Abstract

The utility model discloses a cylindrical battery trial-manufacture confluence disc welding tool which comprises a positioning cylinder with an opening in the upper end and a detachably-arranged pressing head, a welding hole coaxially penetrating through the pressing head is formed in the pressing head, a plurality of radial plates arranged along the axis are arranged in the welding hole, and the bottoms of the radial plates are flush with the bottom of the pressing head to form a compression joint face. One side of the radial plate extends to the inner wall of the welding hole in the radial direction and divides the welding hole into a plurality of welding cavities, and air inlet holes corresponding to the welding cavities one to one are formed in the inner wall of the welding hole; an air guide sleeve is embedded in the welding hole, the air guide sleeve comprises a sleeve, and the sleeve is provided with a receding groove corresponding to the radial plate, so that the sleeve is detachably matched in the welding hole; the outer side wall of the sleeve is provided with an air guide groove corresponding to the welding cavity, and the lower end of the sleeve is provided with an air guide hole communicated with the air guide groove. The device has the advantages of simple and reliable structure, convenience in operation and use, convenience in trial-manufacture of the novel cylindrical battery 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 tool for trial production of cylindrical batteries. 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. In order to meet different product needs, it is necessary to develop and test new cylindrical batteries. During the trial production of cylindrical batteries, the busbar must be welded. The existing fixing fixtures often cannot meet the size requirements of the trial-produced batteries, and the structure is complex and bulky and is not suitable for use alone without the equipment. For this reason, there is an urgent need for a busbar welding tool with a simple structure that is convenient for trial production of new cylindrical batteries. 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 tool which has a simple and reliable structure, is easy to operate and use, and is convenient for trial production of new cylindrical batteries.

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

[0005] A busbar welding tool for trial production of cylindrical batteries, characterized in that it includes a positioning cylinder with a cylindrical shape and an open upper end, a pressure head is detachably provided on the upper end of the positioning cylinder, the outer diameter of the pressure head matches the inner diameter of the positioning cylinder, and a welding hole is coaxially arranged therethrough, a plurality of spokes arranged along the axis line are arranged in the welding hole, the bottom of the spokes is flush with the bottom of the pressure head to form a crimping surface; the upper end of the pressure head has a flange ring protruding in the radial direction, the flange ring has a plurality of bolt holes evenly distributed in the circumferential direction, the upper end of the positioning cylinder has threaded holes arranged corresponding to the bolt holes, and the pressure head is detachably connected to the positioning cylinder by bolts; one side of the spoke is along The sleeve is provided with an air guide groove which is arranged corresponding to the welding cavity, and the air guide groove is provided on the outer wall of the sleeve. The air guide groove is provided on the lower end of the sleeve. The upper end of the air guide groove is directly connected to the position of the air guide groove in the assembled state.

[0006] When in use, put the winding core and busbar of the trial battery into the positioning tube, and connect the pressure head to the positioning tube by bolts, so that the crimping surface of the pressure head is pressed tightly on the busbar, and then align the clearance groove of the air guide sleeve with the spoke plate, and put the conductor sleeve into the welding hole. Since the outer diameter of the sleeve of the air guide sleeve matches the inner diameter of the welding hole, the two form a relatively closed structure after cooperation. At the same time, the air guide groove on the outer wall of the sleeve cooperates with the inner wall of the welding hole to form an air guide channel. The inert gas entering from the air inlet can only flow downward from the connected air guide groove to the lower end of the sleeve and blow out from the air guide hole. On the one hand, this structure can provide inert gas protection for the welding part. The above-mentioned tooling is exquisite and portable, occupies little space, does not require complex fixing assistance, and is suitable for product trial production.

[0007] Furthermore, the positioning tube has a disc-shaped top plate, the diameter of which matches the inner diameter of the positioning tube and can be axially movably fitted in the positioning tube; the lower end of the positioning tube has a closed bottom plate, the middle of the bottom plate has a through-set adjustment threaded hole, the adjustment threaded hole is fitted with an upwardly set adjustment bolt, and the upper end of the adjustment bolt abuts against the bottom of the top plate.

[0008] For winding cores of different lengths, the height of the top plate can be adjusted by adjusting the bolts to adapt.

[0009] Furthermore, the bottom of the base plate has a recessed countersunk hole, the depth of the countersunk hole is greater than the adjustment length of the adjustment bolt, and the adjustment threaded hole is located at the bottom of the countersunk hole.

[0010] In this way, the adjusting bolt can be completely located in the countersunk hole, so that the base plate can be placed stably on the operating table for easy operation.

[0011] Furthermore, the bottom of the top plate has a positioning hole coaxially facing the adjusting threaded hole, the depth of the positioning hole is less than the thickness of the top plate, and the diameter is greater than the diameter of the adjusting bolt.

[0012] Furthermore, both ends of the positioning tube are open, and the bottom plate is detachably mounted on the lower end of the positioning tube by bolts.

[0013] Furthermore, the depth of the clearance groove in the axial direction of the sleeve is smaller than the length of the spoke plate, and the air guide groove extends toward the lower end of the sleeve and penetrates to form the air guide hole.

[0014] In this way, since the depth of the clearance groove is smaller than the length of the spoke plate, after the clearance groove is fully matched with the spoke plate, the lower end of the sleeve is still at a certain distance from the crimping surface. After the air flow passes through the air guide groove and blows out from the air guide hole between the sleeve and the pressure head, it just faces the welded busbar.

[0015] Furthermore, the air guide groove comprises a main air guide groove arranged along the circumference of the sleeve, and the main air guide groove is connected to a plurality of sub-air guide grooves extending toward the lower end of the sleeve.

[0016] Furthermore, the branch air guide grooves are extended in a spiral direction along the circumference of the sleeve.

[0017] Since the sub-gas guide grooves are arranged in a spiral direction, the inert gas blown out from the sub-gas guide grooves will still flow circumferentially in the welding hole to form a rotating airflow, thereby better removing welding slag.

[0018] Furthermore, the flange has a plurality of bolt holes evenly distributed along the circumferential direction, the pressure head has threaded holes corresponding to the bolt holes, and the flange is mounted on the pressure head by bolts passing through the bolt holes.

[0019] Furthermore, the outer diameter of the lower end of the pressure head gradually decreases to be a frustum.

[0020] In this way, the area of ​​the crimping surface at the lower end of the pressure head can be reduced, so that the busbar can be pressed more reliably on the winding core to ensure the welding quality.

[0021] In summary, the utility model has the advantages of simple and reliable structure, easy operation and use, and convenient trial production of new cylindrical batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of this embodiment.

[0023] Figure 2 for Figure 1 Schematic diagram of the dispersed structure.

[0024] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the embodiments.

[0026] When implementing: Figure 1 to Figure 3As shown, a busbar welding tool for trial production of cylindrical batteries comprises a positioning cylinder 1 which is cylindrical and has an open upper end, a pressure head 2 is detachably provided on the upper end of the positioning cylinder 1, the outer diameter of the pressure head 2 matches the inner diameter of the positioning cylinder 1, and has a welding hole coaxially arranged therethrough, a plurality of spokes 3 arranged along the axis, the bottom of the spokes 3 is flush with the bottom of the pressure head 2 to form a crimping surface; the upper end of the pressure head 2 has a flange ring protruding in the radial direction, the flange ring has a plurality of bolt holes uniformly arranged in the circumferential direction, the upper end of the positioning cylinder 1 has threaded holes arranged corresponding to the bolt holes, and the pressure head 2 is detachably connected to the positioning cylinder 1 by bolts; one side of the spoke 3 extends radially to the welding hole, and ... flange ring has a plurality of bolt holes uniformly arranged in the circumferential direction, the flange ring has a plurality of bolt holes uniformly arranged in the circumferential direction, the flange ring has a plurality of bolt holes uniformly arranged in the circumferential direction, the flange ring has a plurality The inner wall of the welding hole is connected to the inner wall of the welding hole, and the welding hole is divided into a plurality of welding cavities, the inner wall of the welding hole is provided with air inlet holes arranged one by one in correspondence with the welding cavities; an air guide sleeve 4 is embedded in the welding hole, and the air guide sleeve 4 comprises a sleeve 41 and a flange 42 formed at the upper end of the sleeve 41 and protruding radially outward; the outer diameter of the sleeve 41 matches the inner diameter of the welding hole, and has a makeshift groove 43 arranged corresponding to the spoke plate 3, so that the sleeve 41 can be detachably fitted in the welding hole; the outer side wall of the sleeve 41 is provided with an air guide groove 44 arranged corresponding to the welding cavity, and the lower end of the sleeve 41 is provided with an air guide hole connected with the air guide groove 44; the upper end of the air guide groove 44 is connected to the position of the air inlet hole in the assembled state.

[0027] The positioning tube 1 has a disc-shaped top plate 5, the diameter of which matches the inner diameter of the positioning tube 1 and can be axially moved in the positioning tube 1; the lower end of the positioning tube 1 has a closed bottom plate 6, the middle of the bottom plate 6 has a through-set adjustment threaded hole, the adjustment threaded hole is matched with an upwardly set adjustment bolt, and the upper end of the adjustment bolt abuts against the bottom of the top plate 5. Figure 3 As shown, the bottom of the bottom plate 6 has a recessed countersunk hole, the depth of which is greater than the adjustment length of the adjustment bolt, and the adjustment threaded hole is located at the bottom of the countersunk hole. The bottom of the top plate 5 has a positioning hole coaxially opposite to the adjustment threaded hole, the depth of which is less than the thickness of the top plate 5, and the diameter of which is greater than the diameter of the adjustment bolt. In this embodiment, both ends of the positioning cylinder 1 are open, and the bottom plate 6 is detachably mounted on the lower end of the positioning cylinder 1 by bolts.

[0028] like Figure 2 and Figure 3As shown, the depth of the axial direction of the sleeve 41 is less than the length of the spoke 3, and the air guide groove extends toward the lower end of the sleeve 41 and penetrates to form the air guide hole. The air guide groove 44 includes a main air guide groove arranged along the circumference of the sleeve 41, and the main air guide groove is connected to a plurality of sub-air guide grooves extending toward the lower end of the sleeve 41. In this way, since the depth of the axial direction of the axial direction of the sleeve 41 is less than the length of the spoke, after the axial direction of the axial direction of the sleeve 41 is fully matched with the spoke, the lower end of the sleeve is still at a certain distance from the crimping surface, and the air flow passes through the air guide groove and blows out from the air guide hole between the sleeve and the pressure head, just facing the welded conduit. In order to better blow away the welding slag, the sub-air guide groove is extended in the spiral direction along the circumference of the sleeve 41. Since the sub-air guide groove is arranged in the spiral direction, the inert gas blown out from the sub-air guide groove will still flow in the welding hole along the circumference to form a rotating air flow, so that the welding slag can be better removed.

[0029] The flange 42 has a plurality of bolt holes evenly distributed along the circumference, the pressure head 2 has threaded holes corresponding to the bolt holes, and the flange 42 is mounted on the pressure head 2 by bolts passing through the bolt holes. The outer diameter of the lower end of the pressure head 2 gradually decreases to a truncated cone shape, which can reduce the area of ​​the crimping surface at the lower end of the pressure head, so that the busbar can be more reliably pressed on the winding core to ensure the welding quality.

[0030] When in use, put the winding core and busbar of the trial battery into the positioning tube, and connect the pressure head to the positioning tube by bolts, so that the crimping surface of the pressure head is pressed tightly on the busbar, and then align the clearance groove of the air guide sleeve with the spoke plate, and put the conductor sleeve into the welding hole. Since the outer diameter of the sleeve of the air guide sleeve matches the inner diameter of the welding hole, the two form a relatively closed structure after cooperation. At the same time, the air guide groove on the outer wall of the sleeve cooperates with the inner wall of the welding hole to form an air guide channel. The inert gas entering from the air inlet can only flow downward from the connected air guide groove to the lower end of the sleeve and blow out from the air guide hole. On the one hand, this structure can provide inert gas protection for the welding part. The above-mentioned tooling is exquisite and portable, occupies little space, does not require complex fixing assistance, and is suitable for product trial production.

[0031] 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 tool for trial production of cylindrical batteries, characterized in that: The invention comprises a positioning cylinder (1) which is cylindrical and has an open upper end, wherein a pressure head (2) is detachably provided at the upper end of the positioning cylinder (1), wherein the outer diameter of the pressure head (2) matches the inner diameter of the positioning cylinder (1), and the pressure head (2) has a coaxially penetrating welding hole, wherein the welding hole has a plurality of spokes (3) arranged along the axis, wherein the bottom of the spokes (3) is flush with the bottom of the pressure head (2) to form a crimping surface; the upper end of the pressure head (2) has a flange ring protruding in the radial direction, wherein the flange ring has a plurality of bolt holes evenly distributed in the circumferential direction, the upper end of the positioning cylinder (1) has threaded holes arranged corresponding to the bolt holes, and the pressure head (2) is detachably connected to the positioning cylinder (1) by bolts; one side of the spokes (3) extends radially to the inner wall of the welding hole, and the welding hole is connected to the flange ring; The hole is divided into a plurality of welding cavities, and the inner wall of the welding hole has air inlet holes arranged one by one corresponding to the welding cavities; an air guide sleeve (4) is embedded in the welding hole, and the air guide sleeve (4) comprises a sleeve (41) and a flange (42) formed on the upper end of the sleeve (41) and protruding radially outward; the outer diameter of the sleeve (41) matches the inner diameter of the welding hole, and has a clearance groove (43) arranged corresponding to the radial plate (3), so that the sleeve (41) can be detachably fitted in the welding hole; the outer wall of the sleeve (41) has an air guide groove (44) arranged corresponding to the welding cavity, and the lower end of the sleeve (41) has an air guide hole connected to the air guide groove (44); the upper end of the air guide groove (44) is connected to the position of the air inlet hole in an assembled state.

2. The busbar welding tool for cylindrical battery trial production according to claim 1, characterized in that: The positioning cylinder (1) has a disc-shaped top plate (5) therein, the diameter of the top plate (5) matches the inner diameter of the positioning cylinder (1), and the top plate (5) can be axially movably fitted in the positioning cylinder (1); the lower end of the positioning cylinder (1) has a closed bottom plate (6), the middle of the bottom plate (6) has an adjustment threaded hole that is through-set, the adjustment threaded hole is fitted with an upwardly set adjustment bolt, the upper end of the adjustment bolt abuts against the bottom of the top plate (5).

3. The busbar welding tool for cylindrical battery trial production according to claim 2, characterized in that: The bottom of the base plate (6) has a recessed countersunk hole, the depth of the countersunk hole is greater than the adjustment length of the adjustment bolt, and the adjustment threaded hole is located at the bottom of the countersunk hole.

4. The busbar welding tool for cylindrical battery trial production according to claim 2, characterized in that: The bottom of the top plate (5) has a positioning hole coaxially facing the adjusting threaded hole, the depth of the positioning hole is less than the thickness of the top plate (5), and the diameter is greater than the diameter of the adjusting bolt.

5. The busbar welding tool for cylindrical battery trial production according to any one of claims 2 to 4, characterized in that: Both ends of the positioning cylinder (1) are open, and the bottom plate (6) is detachably mounted on the lower end of the positioning cylinder (1) by means of bolts.

6. The busbar welding tool for cylindrical battery trial production according to claim 1, characterized in that: The depth of the clearance groove (43) in the axial direction of the sleeve (41) is less than the length of the spoke plate (3), and the air guide groove extends toward the lower end of the sleeve (41) and penetrates to form the air guide hole.

7. The busbar welding tool for cylindrical battery trial production according to claim 6, characterized in that: The air guide groove (44) comprises a main air guide groove arranged along the circumference of the sleeve (41), and the main air guide groove is connected to a plurality of sub-air guide grooves extending towards the lower end of the sleeve (41).

8. The busbar welding tool for cylindrical battery trial production according to claim 7, characterized in that: The sub-air guide groove is arranged to extend in a spiral direction along the circumference of the sleeve (41).

9. The busbar welding tool for cylindrical battery trial production according to claim 1, characterized in that: The flange (42) has a plurality of bolt holes evenly distributed in the circumferential direction, the pressure head (2) has threaded holes corresponding to the bolt holes, and the flange (42) is mounted on the pressure head (2) by means of bolts passing through the bolt holes.

10. The busbar welding tool for cylindrical battery trial production according to claim 1, characterized in that: The outer diameter of the lower end of the pressure head (2) gradually decreases and becomes a frustum-shaped cone.

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