CN117961247A - Welding device for battery pack connecting sheet - Google Patents
Welding device for battery pack connecting sheet Download PDFInfo
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- CN117961247A CN117961247A CN202410384069.2A CN202410384069A CN117961247A CN 117961247 A CN117961247 A CN 117961247A CN 202410384069 A CN202410384069 A CN 202410384069A CN 117961247 A CN117961247 A CN 117961247A
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- 238000003466 welding Methods 0.000 title claims abstract description 323
- 238000003825 pressing Methods 0.000 claims abstract description 23
- 238000005498 polishing Methods 0.000 claims description 29
- 230000000903 blocking effect Effects 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/3063—Electrode maintenance, e.g. cleaning, grinding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to the technical field of welding, in particular to a welding device for a battery pack connecting sheet, which comprises a frame, wherein a welding assembly is arranged on the frame, the welding assembly comprises a welding head and a moving frame, the moving frame is connected with the welding head, the moving frame drives the welding head to horizontally move on the frame, a pressing welding needle is arranged on the welding head, a plurality of spot welding needles are arranged on the circumferential array of the periphery of the pressing welding needle, when the welding head descends, the pressing welding needle firstly presses and positions the battery pack connecting sheet, the battery pack connecting sheet is prevented from moving, the welding of the spot welding needles is facilitated, meanwhile, the spot welding needles are circumferentially arrayed around the pressing welding needle, and the spot welding needles sequentially perform spot welding on the battery pack connecting sheet, so that spot welding spots are uniformly distributed, the phenomenon of overlapping of the spot welding spots is avoided, the welding strength of the battery pack connecting sheet is higher, and the connection strength of the battery pack connecting sheet is improved.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a welding device for a battery pack connecting sheet.
Background
Welding apparatus refers to devices or systems for performing a welding process that may include various types of welding machines, devices, tools, and auxiliary components for performing welding operations and performing functions required in the welding process. These devices may be designed and configured according to different welding requirements and applications. The welding device can also weld the electrodes, the same electrodes of a plurality of batteries are connected through the conductive metal sheets, and the conductive metal sheets and the electrodes of the batteries are required to be fixed through welding.
However, in the prior art, when welding the battery pack connecting piece, the battery pack needs to be pushed by hands to be welded, the welding of the connecting piece on one battery needs to be positioned for a plurality of times, and most of the conditions can lead to the conditions of miswelding and welding spot superposition, so that the welding strength is influenced.
Disclosure of Invention
Based on the above, it is necessary to provide a welding device for a battery pack connecting piece, which aims at solving the problem that the welding strength is poor due to the fact that the error welding and the overlapping of welding spots are easy to occur when the conventional battery pack connecting piece is subjected to spot welding.
The above purpose is achieved by the following technical scheme:
a battery pack tab welding device comprising:
The welding assembly is used for welding the battery pack connecting sheet;
The welding assembly comprises a welding head and a moving frame, the moving frame is connected with the welding head, the moving frame drives the welding head to horizontally move, a plurality of spot welding needles and a plurality of pressing welding needles are arranged on the welding head, the plurality of spot welding needles are circumferentially arrayed on the periphery of the pressing welding needles, the pressing welding needles and the plurality of spot welding needles can move along the vertical direction, and the welding head drives the pressing welding needles to vertically move downwards to press the battery pack connecting sheet firstly, and then the plurality of spot welding needles vertically move downwards in sequence to contact with the battery pack connecting sheet to finish spot welding and reset in sequence;
And the polishing assembly polishes the spot welding needle after resetting the spot welding needle.
Further, the welding head bottom is provided with a rotary cylinder, all be provided with on the periphery of a plurality of spot welding needles and keep off the axle, keep off the axle and follow the radial distribution of roof pressure welding needle, the upper end of spot welding needle is provided with the elastic component, during initial state, the elastic component is compressed, keep off the outer peripheral face of axle with the up end rolling contact of rotary cylinder is in order to restrict the elastic component is elongated, the opening has been seted up on the up end of rotary cylinder, rotary cylinder is around the axis rotation of roof pressure welding needle makes keep off the axle gets into in proper order the opening and breaks away from in proper order the opening.
Further, the polishing assembly comprises a polishing disc fixedly connected below the rotating cylinder, the rotating cylinder drives the polishing disc to rotate, the blocking shaft is in transmission connection with the spot welding needle, the blocking shaft drives the spot welding needle to rotate when the rotating cylinder drives the blocking shaft to rotate, and after the spot welding needle resets, the periphery of the spot welding needle is in friction contact with the peripheral surface of the polishing disc.
Further, a first bevel gear is arranged at one end, connected with the connecting cylinder, of the baffle shaft, a second bevel gear is arranged on the outer circumferential surface of the spot welding needle, the first bevel gear is meshed with the second bevel gear, and the baffle shaft drives the spot welding needle to rotate when rotating.
Further, the spot welding needles are obliquely arranged, the distance between the upper ends of two adjacent spot welding needles is greater than the distance between the lower ends of two adjacent spot welding needles, the polishing disc is conical, the small end faces downwards, and the periphery of the spot welding needles is in friction contact with the conical surface of the polishing disc.
Further, the notch is provided with a first plane, a second plane and an inclined plane, the first plane is vertical, the second plane is horizontal, the inclined plane inclines along the direction opposite to the rotation direction of the rotating cylinder, an inclined plate is arranged on the inclined plane, the inclination of the inclined plate is adjustable, the baffle shaft is reset after passing through the inclined plate, and the inclination degree of the inclined plate is inversely related to the thickness of the battery pack connecting sheet.
Further, the inclined plane on the opening with the junction of rotating a section of thick bamboo up end is fixed and is provided with the telescopic link, the telescopic link flexible end with the hang plate is articulated, the hang plate can stretch out and draw back, the other end of hang plate articulates the junction on second plane and inclined plane, during the telescopic link extension, the inclination of telescopic link increases, during the telescopic link shortens, the inclination of telescopic link reduces.
Further, the total number of the spot welding needles is four.
Further, a driving mechanism is arranged on the frame and used for driving the movable frame to horizontally move on the frame.
Further, an adjusting knob is arranged on the welding head and used for adjusting the vertical downward moving height of the welding head.
The beneficial effects of the invention are as follows:
According to the invention, the pressing welding pins are arranged on the welding head, the plurality of spot welding pins are circumferentially arranged on the periphery of the pressing welding pins, when the welding head descends, the pressing welding pins firstly press and position the battery pack connecting piece, so that the battery pack connecting piece is prevented from moving, the welding of the spot welding pins is facilitated, meanwhile, the spot welding pins are circumferentially arranged around the pressing welding pins, and the spot welding pins sequentially spot-weld the battery pack connecting piece, so that spot welding points of spot welding are uniformly distributed, the phenomenon of overlapping of the spot welding points is avoided, the welding strength of the battery pack connecting piece is higher, and the connection strength of the battery pack connecting piece is improved.
The invention is also provided with a polishing component which polishes the bottom of the reset spot welding needle, thereby cleaning the bottom of the spot welding needle and ensuring the welding strength of the next spot welding.
According to the invention, the plurality of spot welding needles are obliquely arranged, so that the spot welding needles can move downwards obliquely, the spot welding area of the inclined spot welding needles is larger than that of the spot welding needles which vertically spot-weld, and therefore, the quality and stability of welding can be improved by the inclined spot welding, and the connection strength of the battery pack connecting sheet is increased. Meanwhile, the spot welding needles move downwards in an inclined mode, so that the welding point distances of the spot welding needles in spot welding are relatively short, and the connection strength of the battery pack connecting sheet is further improved.
According to the invention, the spot welding needle is obliquely arranged, and the spot welding needle can be driven by the baffle shaft to rotate around the axis of the spot welding needle, so that the bottom of the spot welding needle is different in position when the spot welding needle contacts with the battery pack connecting sheet each time, and the position of the bottom of the spot welding needle contacted with the battery pack connecting sheet can be changed when the spot welding needle rotates around the axis of the spot welding needle, thereby reducing accumulated deformation caused by the oblique arrangement of the spot welding needle, and further prolonging the service life of the spot welding needle.
According to the invention, the inclined plate is arranged on the notch, and the inclination of the inclined plate is inversely related to the thickness of the battery pack connecting sheet, so that the inclined plate is suitable for the battery pack connecting sheets with various thicknesses, and the practicability of the battery pack connecting sheet welding device is greatly improved.
Drawings
Fig. 1 is a schematic structural view of a welding device for battery pack connection sheets according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a welding head of a welding device for battery pack connection sheets according to an embodiment of the present invention;
FIG. 3 is a front view of a welding head of the battery pack tab welding device provided in one embodiment of FIG. 2;
FIG. 4 is an enlarged view of a portion of a welding assembly A of the battery pack tab welding device provided in one embodiment of FIG. 3;
FIG. 5 is a left side view of a welding head of the battery pack tab welding device provided in one embodiment of FIG. 2;
Fig. 6 is a schematic structural view of a rotating cylinder of a welding device for battery pack connection sheets according to an embodiment of the present invention;
FIG. 7 is a front view of a rotating drum of the battery pack tab welding device provided by the embodiment of FIG. 6;
FIG. 8 is a cross-sectional view of a drum of the battery pack tab welding device provided by one embodiment of FIG. 7, taken along line B-B;
Fig. 9 is a partially enlarged view of a rotating drum C portion of the battery pack tab welding device provided in one embodiment of fig. 8.
Wherein:
100. A frame; 110. a moving guide rail; 120. a moving rack; 130. a welding head; 131. a sleeve; 132. an end cap; 133. an adjustment knob; 140. polishing the grinding disc;
200. pressing the welding pin; 210. a spot welding needle; 211. a cylinder; 220. a blocking shaft;
300. A rotating cylinder; 310. a notch; 311. a first plane; 312. a second plane; 313. an inclined plane; 320. a telescopic rod; 321. a spring; 330. and (3) an inclined plate.
Detailed Description
The present invention will be further described in detail below with reference to examples, which are provided to illustrate the objects, technical solutions and advantages of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The numbering of components herein, such as "first," "second," etc., is used merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
The present application provides a battery pack tab welding device described below with reference to fig. 1-9.
The utility model provides a group battery connection piece welding set, be applicable to the spot welding of thinner connection piece, be particularly useful for the spot welding connection of group battery connection piece, including frame 100, be provided with welding set on the frame 100, welding set is used for welding the group battery connection piece, welding set includes soldered connection 130 and removes frame 120, remove frame 120 slip setting on frame 100, remove frame 120 and be connected with soldered connection 130, remove frame 120 and drive soldered connection 130 synchronous horizontal migration when moving in frame 100, soldered connection 130 bottom is provided with spot welding needle 210 and roof pressure welding needle 200, spot welding needle 210 has a plurality ofly, a plurality of spot welding needle 210 circumference arrays are in the periphery of roof pressure welding needle 200. After the movable frame 120 drives the welding head 130 to move to the battery pack connecting piece needing spot welding, the welding head 130 vertically moves downwards, the pressing welding pins 200 are firstly contacted with the battery pack connecting piece and then are pressed against the position of the battery pack connecting piece, then the plurality of spot welding pins 210 vertically move downwards in sequence to be contacted with the battery pack connecting piece so as to finish spot welding and reset in sequence, a plurality of welding spots are formed on the battery pack connecting piece and are in a circumferential array, the welding spots are uniformly and regularly distributed, the overlapping condition of the welding spots cannot occur, and the even distribution of the welding spots improves the connection strength of the battery pack connecting piece.
The welding head 130 is further provided with a polishing component, and the polishing component is used for polishing the bottom of the spot welding needle 210, so that the bottom of the spot welding needle 210 is kept clean, namely oxides and dirt on the surface are removed, good conductivity of the welding head 130 is maintained, and stability and reliability of a spot welding process are ensured. At the same time, the service life of the spot welding needle 210 can be prolonged, and the welding head 130 is affected by heat and pressure in the working process, so that abrasion and deformation are easy to generate. The regular polishing of the welding head 130 can remove the wearing layer and deformed portion of the surface, prolong the service life of the welding head 130, reduce the frequency of replacing the welding head 130, and reduce the maintenance cost.
According to the application, the top pressure welding needle 200 is arranged, when other spot welding needles 210 are not in contact with the battery pack connecting sheet, the position of the battery pack connecting sheet is fixed, the battery pack connecting sheet is prevented from moving, the welding of the spot welding needles 210 is facilitated, meanwhile, the spot welding needles 210 are circumferentially arrayed around the top pressure welding needle 200, and the spot welding needles 210 sequentially spot-weld the battery pack connecting sheet, so that the spot welding spots of the spot welding are uniformly distributed, the phenomenon of overlapping of the spot welding is avoided, the welding strength of the battery pack connecting sheet is higher, and the connection strength of the battery pack connecting sheet is improved. The application is also provided with a polishing component which polishes the bottom of the reset spot welding needle 210, thereby cleaning the bottom of the spot welding needle 210 and ensuring the welding strength of the next spot welding.
Specifically, in order to realize the function that the spot welding needle 210 contacts with the battery pack connecting piece vertically downwards in sequence to complete the spot welding operation and resets in sequence, a rotating cylinder 300 is arranged at the bottom of the welding head 130, a through groove is arranged on the welding head 130, a sleeve 131 is arranged at the upper end of the through groove, the sleeve 131 is sleeved with the sleeve 131, the sleeve 131 is fixed in the through groove, an elastic piece (not shown in the figure) is arranged in the sleeve 131, a blocking shaft 220 is arranged at one end of the sleeve 131 extending out of the through groove, the blocking shaft 220 is distributed along the radial direction of the top pressure welding needle 200, an end cover 132 is arranged on the sleeve 131, the elastic piece is placed in the sleeve 131, the elastic piece is compressed, the upper end cover 132 is covered, in rolling contact with the upper end face of the rotating cylinder 300 in an initial state, an opening 310 is formed in the upper end face of the rotating cylinder 300, when the rotating cylinder 300 rotates around the axis of the top pressure welding needle 200, the opening 310 synchronously rotates, when the opening 310 moves to the lower side of the blocking shaft 220, the spot welding needle 210 moves vertically downwards under the action of the elastic piece, the blocking shaft 220 is arranged at one end of the blocking shaft 220, the end cover 132 is arranged along the radial direction of the top pressure welding needle 200, the end cover 132 is arranged on the end cover, the elastic piece is placed in the sleeve after the sleeve 131, the elastic piece is reset, the upper end cover is horizontally and the welding needle 300 is reset, and the end cover is rotated again, and the end cover is rotated, and the end covers the end cover 300, and the end cover is horizontally after the end cover is reset, and the end cover is reset.
Specifically, the polishing assembly includes a polishing disc 140, the polishing disc 140 is fixedly disposed below the rotating cylinder 300, the rotating cylinder 300 rotates to drive the polishing disc 140 to rotate synchronously, the blocking shaft 220 is in transmission connection with the spot welding needle 210, the blocking shaft 220 is in rolling contact with the upper end surface of the rotating cylinder 300, the rotating cylinder 300 rotates to drive the spot welding needle 210 to rotate, and the rotating speed of the spot welding needle 210 is different from the rotating speed of the polishing disc 140 so as to generate a speed difference, so that the spot welding needle 210 is polished by the polishing disc 140. The spot welding needle 210 is sleeved with a cylinder 211, the cylinder 211 can axially move in the through groove but does not rotate relatively, a rotating hole is formed in the side wall of the cylinder 211, the baffle shaft 220 is in transmission connection with the spot welding needle 210 through the rotating hole, a first bevel gear (not shown in the figure) is coaxially and fixedly arranged at one end of the baffle shaft 220 in the connecting hole, a second bevel gear (not shown in the figure) is coaxially and fixedly arranged on the periphery of the spot welding needle 210 in the cylinder 211, the first bevel gear and the second bevel gear are meshed, and the rotation of the baffle shaft 220 drives the spot welding needle 210 to rotate, so that all positions of the periphery of the bottom of the spot welding needle 210 are polished, and polishing is more uniform.
In a further embodiment, the spot welding pins 210 are obliquely disposed, the bottom end distance of two adjacent spot welding pins 210 is lower than the top end distance of two adjacent spot welding pins 210, as shown in fig. 2 and 3, the bottoms of the spot welding pins 210 are close, and the tops are far away, forming a cone-like shape, while the through slots in the embodiment are also obliquely disposed, so that the spot welding pins 210 can be obliquely moved downwards, the bottom ends of the spot welding pins are obliquely contacted with the battery pack connecting piece to finish the spot welding, and the spot welding area of the oblique spot welding pins 210 is larger than the vertical spot welding area of the spot welding pins 210, so that the welding quality and stability can be improved by the oblique spot welding, and the connecting strength of the battery pack connecting piece can be increased. Meanwhile, the spot welding pins 210 are moved obliquely downward, so that the spot welding distances of the spot welding pins 210 are closer, and the connection strength of the battery pack connection sheet is further increased.
Specifically, the grinding disc 140 is tapered to accommodate the obliquely arranged spot welding needle 210, and the bottom outer circumferential surface of the spot welding needle 210 contacts the tapered surface of the grinding disc 140 when the spot welding needle 210 is reset.
It should be noted that, the spot welding needle 210 is obliquely disposed, and the spot welding needle 210 can be driven by the blocking shaft 220 to rotate around the axis thereof, so that the bottom of the spot welding needle 210 contacts with the battery pack connecting piece each time and the position of the spot welding needle is different, and the rotation of the spot welding needle 210 around the axis thereof can change the position of the bottom of the spot welding needle 210 contacting with the battery pack connecting piece, thereby reducing the accumulated deformation (accumulated deformation refers to the downward movement of the spot welding needle 210 obliquely when the spot welding is completed due to the oblique disposition and the downward movement under the action of the spring 321), and slight deformation, namely slight bending, is generated when the spot welding needle 210 contacts with the battery pack connecting piece when the movement is stopped, namely so-called accumulated deformation is gradually increased along with the increase of the number of spot welding times, and the condition that the spot welding needle 210 is gradually bent due to the fact that the contact position of the bottom of the spot welding needle 210 and the battery pack connecting piece is constantly changed is reduced. Of course, the above-mentioned solution can prolong the service life of the spot welding needle 210, but the problem of accumulated deformation cannot be completely avoided, if the spot welding needle 210 needs to be replaced even if the service time is long.
In a further embodiment, as shown in fig. 6, the notch 310 on the rotating cylinder 300 is provided with a first plane 311, a second plane 312 and an inclined plane 313, the first plane 311 is vertical, the second plane 312 is horizontal, the bottom end of the first plane 311 is connected with the left end of the second plane 312, the right end of the second plane 312 is connected with the inclined plane 313, the inclined plane 313 is inclined towards the direction opposite to the rotating direction of the rotating cylinder 300, in this embodiment, when the rotating cylinder 300 rotates clockwise, the inclined plane 313 is inclined towards the anticlockwise direction, the inclined plane 313 is provided with an inclined plate 330, the inclined direction of the inclined plate 330 is the same as the inclined direction of the inclined plane 313, and the blocking shaft 220 enters the notch 310 through the connection part of the upper end surface of the rotating cylinder 300 and the first plane 311, so that after the spot welding needle 210 contacts with the battery pack connecting piece, a gap exists between the blocking shaft 220 and the second plane 312, that is not contacted with the second plane 312, so that the spot welding needle 210 can completely contact with the battery pack connecting piece, and the situation that the spot welding needle 210 cannot contact with the bottom of the battery pack connecting piece due to the fact that the blocking shaft 220 contacts with the second plane 312 cannot be avoided.
Specifically, the inclination of the inclined plate 330 is adjustable, the opening 310 is provided with a telescopic rod 320, the fixed end of the telescopic rod 320 is fixedly connected to the position where the inclined plane 313 contacts with the upper end surface of the rotating cylinder 300, the telescopic rod 320 is horizontally arranged, the telescopic end of the telescopic rod 320 is hinged to one end of the inclined plate 330, the other end of the inclined plate 330 is hinged to the junction of the second plane 312 and the inclined plane 313, the inclined plate 330 is in telescopic connection by two flat plates, in the initial state, the telescopic end of the telescopic rod 320 is in medium length, the inclined plate 330 is also in medium length, when the telescopic rod 320 extends, the inclination degree of the inclined plate 330 is increased, the length of the inclined plate 330 is reduced, the baffle shaft 220 is contacted with the inclined plate 330 in advance, the spot welding time of the spot welding needle 210 is reduced, for a battery pack connecting sheet with thinner thickness, the spot welding time is not excessively long, the battery pack connecting sheet is overheated or burnt through, and the welding quality of the battery pack connecting sheet is reduced; when the telescopic rod 320 is shortened, the inclination degree of the inclined plate 330 is reduced, the length of the inclined plate 330 is increased, the blocking shaft 220 is contacted with the inclined plate 330 after being delayed, the blocking shaft 220 is raised after being delayed, the spot welding time of the spot welding needle 210 is increased, and when the connecting piece with a thicker thickness is connected, the welding strength of the battery pack connecting piece can be ensured by the spot welding with a longer time.
Therefore, by providing the inclination plate 330 with an adjustable inclination to accommodate various thicknesses of the battery pack connection pieces, the practicality of the battery pack connection piece welding device is greatly improved.
The telescopic rod 320 has a spring 321 therein, and the length of the telescopic rod 320 can be adjusted by changing the length of the spring 321, however, the telescopic rod 320 of the present application may also be an electrically controlled telescopic rod 320, and the length of the telescopic rod 320 may be directly controlled, which is not particularly limited herein.
The number of the spot welding pins 210 in the present embodiment is four, but it is needless to say that the number may be more than four, and is not particularly limited herein.
In a further embodiment, a driving mechanism is disposed on the frame 100, the driving mechanism is used for driving the moving frame 120 to horizontally move on the frame 100, specifically, a moving guide rail 110 is disposed on the frame 100, the moving frame 120 is slidably disposed on the moving guide rail 110, the driving mechanism includes a driving motor (not shown in the figure), the driving motor is disposed inside the moving frame 120, the driving motor drives the moving member to move along the moving guide rail 110 when started, and the driving motor starts to drive the welding head 130 to vertically move downwards to start the welding operation after moving to a position right above the battery pack to be welded.
Specifically, the welding head 130 is provided with an adjusting knob 133, and the adjusting knob 133 is used for adjusting the descending height of the welding head 130 to adapt to the battery pack connecting sheets with different thicknesses.
The following describes a specific working procedure of the welding device for battery pack connecting sheets according to the present application in combination with the above embodiment:
And (3) adjusting:
The adjusting knob 133 is adjusted so that the height of the welding head 130 lowered is adapted to the thickness of the battery pack connection sheet, and at the same time, the length of the telescopic rod 320 is adjusted so that the inclination of the inclined plate 330 is also adapted to the thickness of the battery pack connection sheet.
Starting:
after the driving motor is started, the driving motor drives the movable frame 120 to horizontally move to the position right above the battery pack connecting sheet on the stand 100, the driving motor drives the welding head 130 to descend, a plurality of spot welding needles 210 and the pressing welding needles 200 on the welding head 130 synchronously move with the welding head 130, because the initial state of the pressing welding needles 200 is longer than the length of the plurality of spot welding needles 210, when the welding head 130 moves downwards, the pressing welding heads firstly contact with the battery pack connecting sheet to press the battery pack connecting sheet and fix the battery pack connecting sheet, then, the rotating cylinder 300 starts to rotate, when the rotating cylinder 300 rotates, the position of the notch 310 changes along with the rotation of the rotating cylinder 300, the baffle shafts 220 of the plurality of spot welding needles 210 sequentially enter the notch 310, and when the baffle shafts 220 pass through the notch 310, the action of the elastic piece downwards moves to enable the bottoms of the spot welding needles 210 to be in contact with the battery pack connecting sheet to finish one spot welding, after one spot welding needle 210 is finished, the baffle shafts 220 enter the notch 310 and are not in contact with the second plane 312, and because the rotating cylinder 300 continuously rotates, after the baffle shafts 220 pass through the inclined plate 330 and are in contact with the upper end face of the rotating cylinder 300 again, the baffle shafts 220 are reset to enable the rotating cylinder 300 to rotate, and the baffle shafts 220 to rotate, and the rotating cylinder 300 is reset, and the rotating cylinder 300 is rotated, and the rotating speed of the baffle shafts is reduced, and the two needle rolls and the rotating cylinder 300 is rotated, and the needle heads is rotated. Each time the subsequent notch 310 passes through one baffle shaft 220, the spot welding needle 210 on the baffle shaft 220 moves downwards to finish one spot welding, and after all spot welding needles 210 finish one spot welding, a uniform welding spot is formed on the battery pack connecting disc, so that the connection strength of the battery pack connecting sheet is higher. After the spot welding is completed, the driving motor drives the welding head 130 to ascend, and the driving motor drives the moving frame 120 to move to the position of the next battery pack connecting sheet to be welded for the next welding.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.
Claims (10)
1. A battery pack tab welding device, comprising:
The welding assembly is used for welding the battery pack connecting sheet;
The welding assembly comprises a welding head and a moving frame, the moving frame is connected with the welding head, the moving frame drives the welding head to horizontally move, a plurality of spot welding needles and a plurality of pressing welding needles are arranged on the welding head, the plurality of spot welding needles are circumferentially arrayed on the periphery of the pressing welding needles, the pressing welding needles and the plurality of spot welding needles can move along the vertical direction, and the welding head drives the pressing welding needles to vertically move downwards to press the battery pack connecting sheet firstly, and then the plurality of spot welding needles vertically move downwards in sequence to contact with the battery pack connecting sheet to finish spot welding and reset in sequence;
And the polishing assembly polishes the spot welding needle after resetting the spot welding needle.
2. The battery pack connecting piece welding device according to claim 1, wherein a rotating cylinder is arranged at the bottom of the welding head, blocking shafts are arranged on the peripheries of the spot welding needles, the blocking shafts are distributed along the radial direction of the pressing welding needles, elastic pieces are arranged at the upper ends of the spot welding needles, the elastic pieces are compressed in the initial state, the peripheral surfaces of the blocking shafts are in rolling contact with the upper end face of the rotating cylinder to limit the elongation of the elastic pieces, a notch is formed in the upper end face of the rotating cylinder, and the rotating cylinder rotates around the axis of the pressing welding needles so that the blocking shafts sequentially enter the notch and sequentially separate from the notch.
3. The welding device for the battery pack connecting piece according to claim 2, wherein the polishing assembly comprises a polishing disc fixedly connected below the rotating cylinder, the rotating cylinder drives the polishing disc to rotate, the blocking shaft is in transmission connection with the spot welding needle, when the rotating cylinder drives the blocking shaft to rotate, the blocking shaft drives the spot welding needle to rotate, and after the spot welding needle is reset, the periphery of the spot welding needle is in friction contact with the peripheral surface of the polishing disc.
4. The welding device for the battery pack connecting piece according to claim 3, wherein a first bevel gear is arranged at one end of the blocking shaft connected with the connecting cylinder, a second bevel gear is arranged on the outer peripheral surface of the spot welding needle, the first bevel gear is meshed with the second bevel gear, and the blocking shaft drives the spot welding needle to rotate when rotating.
5. The battery pack connection piece welding device according to claim 3, wherein the spot welding needles are obliquely arranged, the distance between the upper ends of two adjacent spot welding needles is greater than the distance between the lower ends of two adjacent spot welding needles, the polishing disc is conical, the small ends of the polishing disc face downwards, and the periphery of the spot welding needles are in friction contact with the conical surface of the polishing disc.
6. The battery pack connecting piece welding device according to claim 2, wherein the notch is provided with a first plane, a second plane and an inclined plane, the first plane is vertical, the second plane is horizontal, the inclined plane is inclined along the direction opposite to the rotation direction of the rotating cylinder, an inclined plate is arranged on the inclined plane, the inclination of the inclined plate is adjustable, the blocking shaft is reset after passing through the inclined plate, and the inclination degree of the inclined plate is inversely related to the thickness of the battery pack connecting piece.
7. The welding device for the battery pack connecting piece according to claim 6, wherein a telescopic rod is fixedly arranged at the joint of the inclined surface on the opening and the upper end surface of the rotating cylinder, the telescopic end of the telescopic rod is hinged with the inclined plate, the inclined plate can stretch, the other end of the inclined plate is hinged at the joint of the second plane and the inclined surface, when the telescopic rod stretches, the inclination degree of the telescopic plate increases, and when the telescopic rod shortens, the inclination degree of the telescopic plate decreases.
8. The battery pack tab welding device of claim 1 wherein the spot welding pins are four in total.
9. The battery pack tab welding device of claim 1 wherein the frame is provided with a drive mechanism for driving the movable frame to move horizontally on the frame.
10. The battery pack connection tab welding device of claim 1, wherein an adjustment knob is provided on the welding head for adjusting the height of the welding head that moves vertically downward.
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| CN202410384069.2A CN117961247B (en) | 2024-04-01 | 2024-04-01 | Welding device for battery pack connecting sheet |
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| CN202410384069.2A CN117961247B (en) | 2024-04-01 | 2024-04-01 | Welding device for battery pack connecting sheet |
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| CN117961247B CN117961247B (en) | 2024-07-19 |
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| CN117283223A (en) * | 2023-11-24 | 2023-12-26 | 山东永捷热能科技有限公司 | Welding equipment and method for manufacturing gas through-flow steam generator |
| CN220407548U (en) * | 2023-04-26 | 2024-01-30 | 山东同大新能源有限公司 | Welding device for lithium battery module |
| CN220612763U (en) * | 2023-08-25 | 2024-03-19 | 东莞市银天新能源有限公司 | Automatic welding structure for double copper lugs |
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2024
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| JP2002126878A (en) * | 2000-10-19 | 2002-05-08 | Noritake Co Ltd | Spot welding head |
| CN206316599U (en) * | 2016-12-21 | 2017-07-11 | 惠州市捷能通自动化科技有限公司 | A kind of battery bond pads nickel sheet hold-down gear |
| CN107150182A (en) * | 2017-06-27 | 2017-09-12 | 福建星云电子股份有限公司 | A kind of four pin mark welding head devices |
| CN112247423A (en) * | 2020-11-10 | 2021-01-22 | 深圳市睿露智能科技有限公司 | Welding pin welding equipment |
| CN115488560A (en) * | 2022-10-22 | 2022-12-20 | 依百半导体(深圳)有限公司 | Semiconductor package lead welding device |
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| CN220612763U (en) * | 2023-08-25 | 2024-03-19 | 东莞市银天新能源有限公司 | Automatic welding structure for double copper lugs |
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| CN117961247B (en) | 2024-07-19 |
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