CN118002915B - Cell sealing nail welding device based on laser flying welding principle - Google Patents
Cell sealing nail welding device based on laser flying welding principle Download PDFInfo
- Publication number
- CN118002915B CN118002915B CN202410427312.4A CN202410427312A CN118002915B CN 118002915 B CN118002915 B CN 118002915B CN 202410427312 A CN202410427312 A CN 202410427312A CN 118002915 B CN118002915 B CN 118002915B
- Authority
- CN
- China
- Prior art keywords
- laser
- welding
- limiting ring
- cylinder
- driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003466 welding Methods 0.000 title claims abstract description 139
- 238000007789 sealing Methods 0.000 title claims abstract description 47
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 40
- 230000005284 excitation Effects 0.000 claims abstract description 11
- 230000000712 assembly Effects 0.000 claims description 20
- 238000000429 assembly Methods 0.000 claims description 20
- 238000007493 shaping process Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000011258 core-shell material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Laser Beam Processing (AREA)
Abstract
The invention relates to the technical field of lithium battery sealing nail welding, and particularly provides a battery cell sealing nail welding device based on a laser flying welding principle, which comprises: a horizontal driving section; the laser welding end is internally provided with a laser part for welding sealing nails of the lithium battery, the laser welding end is internally provided with a welding driving part for driving the laser part to swing and rotate around a point in an inclined manner, the laser part is internally provided with a focusing component for adjusting a laser focus, and the laser part is also connected with a laser excitation component for generating at least two lasers with different powers; the invention can weld synchronously in the process of lithium battery circulation, and compared with the traditional welding mode of placing the lithium battery on welding equipment, the welding sealing nail in the process of lithium battery circulation can effectively improve the welding efficiency of the lithium battery and the production efficiency.
Description
Technical Field
The invention relates to the technical field of sealing nail welding of lithium batteries, in particular to a battery cell sealing nail welding device based on a laser flying welding principle.
Background
Sealing nail welding, also called liquid injection port welding, is to seal the battery with a glue nail after electrolyte is injected into the battery, and perform laser welding to realize sealing. The cell of the battery is isolated from the external environment, and a sealed electrochemical system is formed.
The current welding flow of sealed nail is, at first take off the lithium cell from the circulation line, place it on laser welding equipment's the workstation, then carry out laser cleaning process, circulate the lithium cell to welding station after wasing and accomplish, rotate around sealed nail through servo mechanism control laser welding head, laser fusion seals the edge of nail and electric core shell for sealed nail and electric core shell connect, then place the electric core on the circulation line, this kind of mode has the lower problem of welding efficiency, influences the takt. Therefore, the application provides a battery cell sealing nail welding device based on a laser flying welding principle.
Disclosure of Invention
The invention aims to provide a battery cell sealing nail welding device based on a laser flying welding principle, which aims to solve the problem of low welding efficiency of the current lithium battery cell sealing nail.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A cell seal pin welding device based on laser flying welding principle, the welding device comprising:
a horizontal driving section;
The laser welding device comprises a horizontal driving part, a laser welding end, a welding driving part, a first limiting ring and a second limiting ring, wherein the horizontal driving part is used for driving the laser welding end to linearly move at a preset speed, a laser part is arranged in the laser welding end for welding a sealing nail of a lithium battery, the laser welding end is internally provided with a welding driving part for driving the laser part to swing and rotate around a point in an inclined mode, the outer side of the laser part is provided with a spherical bulge, the outer side of the spherical bulge is provided with the first limiting ring and the second limiting ring which limit the first limiting ring and the second limiting ring are fixed on a connecting shell of the laser welding end, the second limiting ring is rotationally connected with the laser part, the second limiting ring is rotationally connected into the connecting shell, the welding driving part comprises two telescopic assemblies symmetrically arranged relative to the axis of the laser part and a rotating module for driving the second limiting ring to rotate, and the telescopic assemblies are fixedly connected onto the second limiting ring, and when the output end of the telescopic assemblies stretches out, the telescopic assemblies jack the laser part to deflect around the spherical bulge; when the laser part swings, the two telescopic assemblies are alternatively jacked up; when the laser part rotates around the spherical center of the spherical bulge in an inclined state, and one telescopic component is jacked up, the second limiting ring rotates under the drive of the rotating module to drive the telescopic component to rotate around the laser part;
the laser part is also internally provided with a focusing component for adjusting the laser focus, and is also connected with a laser excitation component for generating at least two lasers with different powers;
when the sealing nail and the surface of the battery are cleaned, the laser part swings under the drive of the welding driving part, and the light spot irradiated on the battery by the laser part moves in a zigzag manner;
When the sealing nail is welded, the laser part rotates around a point in an inclined mode under the drive of the welding driving part, and the light spot irradiated on the battery by the laser part moves at the joint of the sealing nail and the battery.
Further, the laser part is of a cylindrical structure, and the spherical center of the spherical bulge is overlapped with the cylindrical axis of the laser part;
the connecting shell is fixedly connected to the output end of the horizontal driving part, the first limiting ring and the second limiting ring are of circular ring structures, the inner sides of the first limiting ring and the second limiting ring are attached to the spherical protrusions, and the first limiting ring and the second limiting ring are located on two sides of the spherical centers of the spherical protrusions to play a limiting role.
Further, the outside of spherical protruding is provided with annular, with the perpendicular drive plate of the axis of laser portion, when the output shaft of flexible subassembly stretches out, the tip butt of the output shaft of flexible subassembly is on the drive plate and exert pressure to the drive plate.
Further, the outside of spherical protruding is provided with annular, with the perpendicular drive plate of the axis of laser portion, when the output shaft of flexible subassembly stretches out, the tip butt of the output shaft of flexible subassembly is on the drive plate and exert pressure to the drive plate.
Further, the welding driving part further includes:
A reset connection ring fixedly connected to an inner wall of the connection housing;
and the two ends of the reset springs are respectively fixedly connected to the inner side of the reset connecting ring and the driving plate, and the reset springs are uniformly distributed around the axis of the laser part in the circumferential direction.
Further, the laser unit includes:
the spherical bulge is positioned on the outer side of the shading cylinder;
The laser head is fixedly connected to the end part of the shading cylinder, the laser head is used for being connected with a laser excitation assembly, the focusing lens is connected to the end part of the shading cylinder, which is far away from the laser head, of the shading cylinder, laser emitted from the laser head irradiates onto the shaping lens, is shaped into parallel light by the shaping lens and then irradiates onto the focusing lens, and then irradiates onto a lithium battery after being focused by the focusing lens.
Further, the focusing assembly includes:
the lens fixing barrel is used for fixing the focusing lens, and an adjusting shaft is arranged on the outer side of the lens fixing barrel;
the lens fixing cylinder is positioned at the inner side of the rotating inner cylinder, and an arc-shaped hole is formed in the side surface of the rotating inner cylinder;
The fixed outer cylinder is fixedly connected to the shading cylinder, the rotating inner cylinder is positioned at the inner side of the fixed outer cylinder, a limiting groove parallel to the axis of the fixed outer cylinder is formed in the inner side of the fixed outer cylinder, and the adjusting shaft penetrates through the arc-shaped hole and is arranged in the limiting groove;
the rotating assembly is positioned in the fixed shell and used for driving the rotating inner cylinder to rotate, and when the rotating inner cylinder rotates, the arc-shaped hole drives the lens fixed cylinder to move along the axis of the lens fixed cylinder through the adjusting shaft.
Further, the rotating assembly includes:
The magnetic block is fixedly connected to the outer side of the rotary inner cylinder;
The first electromagnet and the second electromagnet are fixedly connected to the inner side of the fixed outer cylinder, and when the rotary inner cylinder is driven to rotate, the ends, close to the magnetic blocks, of the first electromagnet and the second electromagnet generate the same magnetic poles.
Further, the rotating assembly is provided with a plurality of groups, and the rotating assembly is uniformly distributed around the axis of the lens fixing barrel.
In summary, compared with the prior art, the invention has the following beneficial effects:
According to the battery cell sealing nail welding device based on the laser flying welding principle, disclosed by the embodiment of the invention, when the sealing nail is welded, the lithium battery does not need to be transferred to welding equipment, and can be synchronously welded in the process of transferring the lithium battery, compared with the traditional welding mode of placing the lithium battery on the welding equipment, the welding efficiency of the lithium battery can be effectively improved, and the production efficiency is improved by welding the sealing nail in the process of transferring the lithium battery.
Drawings
Fig. 1 is a schematic structural diagram of a welding device for a battery cell sealing nail based on a laser flying welding principle according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a laser welding end in a device for welding a battery cell sealing nail based on a laser flying welding principle according to an embodiment of the invention.
Fig. 3 is a cross-sectional view of an actuating end in a device for welding a cell seal pin based on the principle of laser flying welding according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of an internal structure of a connection housing in a welding device for a battery cell sealing nail based on a laser flying welding principle according to an embodiment of the invention.
Fig. 5 is a schematic connection diagram of a reset component and a laser part in the electric core sealing nail welding device based on the laser flying welding principle according to the embodiment of the invention.
Fig. 6 is a top view of fig. 5.
Fig. 7 is a schematic structural diagram of a focusing assembly in a welding device for a battery cell sealing nail based on a laser flying welding principle according to an embodiment of the invention.
Fig. 8 is a top view of fig. 7.
Fig. 9 is a schematic diagram of connection between a lens fixing barrel and a rotary inner barrel in a battery cell sealing nail welding device based on a laser flying welding principle according to an embodiment of the invention.
Reference numerals:
100. a horizontal driving section;
200. A laser welding end; 210. a connection housing; 211. a first housing; 212. a second housing; 220. a first stop collar; 230. a second limiting ring; 240. a third limiting ring; 250. a telescoping assembly; 260. a rotating module; 261. a rotating motor; 262. a connection assembly;
300. A laser section; 310. a light shielding cylinder; 311. a first half shell; 312. a second half shell; 313. a spherical protrusion; 314. a driving plate; 320. a laser head; 330. a shaping lens; 340. a focusing lens;
400. A reset assembly; 410. resetting the connecting ring; 420. a return spring;
500. a focusing assembly; 510. a lens fixing barrel; 511. fixing the cylinder; 512. a lens cover; 513. an adjusting shaft; 520. rotating the inner cylinder; 521. an arc-shaped hole; 522. a fixed ear; 523. a magnetic block; 530. fixing the outer cylinder; 531. an outer cylinder sinking platform; 532. a connecting block; 533. a first electromagnet; 534. a second electromagnet; 535. a limit groove; 536. a limiting outer ring; 540. an outer cylinder fixing ring.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Referring to fig. 1 to 3, an embodiment of the present invention provides a welding device for a battery cell sealing nail based on a laser flying welding principle, the welding device includes a horizontal driving part 100 and a laser welding end 200, the horizontal driving part 100 is used for driving the laser welding end 200 to move along a straight line according to a preset speed, the laser welding end 200 is fixedly connected to an output end of the horizontal driving part 100, a laser part 300 is disposed in the laser welding end 200 to weld a sealing nail of a lithium battery, a welding driving part for driving the laser part 300 to swing and rotate around a point in an inclined manner is further disposed in the laser welding end 200, a focusing assembly 500 for adjusting a laser focus is further disposed in the laser part 300, and the laser part 300 is further connected with a laser excitation assembly to generate at least two lasers with different powers;
When welding the sealing nail of the lithium battery, the welding device performs the following steps:
The laser excitation assembly generates first laser for cleaning, and the size of a light spot of the first laser on the lithium battery is adjusted through the focusing assembly 500, so that the laser forms a light spot with a preset size on the lithium battery;
The horizontal driving part 100 drives the laser welding end 200 to move along a straight line, and the welding driving part controls the laser part 300 to swing, so that light spots move in a zigzag manner on the lithium battery sealing nails to clean the sealing nails and the peripheral parts;
After the sealing nail is cleaned, the laser excitation assembly generates second laser for welding, and the spot size of the second laser on the lithium battery is adjusted through the focusing assembly 500, so that the spot size of the second laser is a preset size;
The spot position of the second laser is adjusted to be in the welding position by the horizontal driving part 100, and the laser part 300 is controlled to rotate around a point in an inclined manner by the welding driving part, so that the spot of the second laser rotates around the sealing nail by one turn to weld the sealing nail.
Specifically, in this embodiment, when the sealing nail is welded, the lithium battery does not need to be transferred to the welding device, and can be synchronously welded in the process of transferring the lithium battery, namely, the laser welding end 200 is controlled by the horizontal driving part 100 to move along with the lithium battery, and when the surface of the sealing nail is cleaned, the moving speed of the laser welding end 200 is greater than the transferring speed of the lithium battery, wherein the difference between the moving speed of the laser welding end 200 and the transferring speed of the lithium battery is designed according to the cleaning efficiency designed by a designer, the implementation is not limited to this, and when the sealing nail is welded, the moving speed of the laser welding end 200 is the same as the transferring speed of the lithium battery, compared with the traditional welding mode of placing the lithium battery on the welding device, the welding efficiency of the lithium battery can be improved, and the production efficiency can be improved.
Specifically, in this embodiment, the horizontal driving portion 100 is a prior art, such as a screw moving mechanism, the laser welding end 200 is fixedly connected to an output shaft of the horizontal driving portion 100, when the welding device of this embodiment is installed, the horizontal driving portion 100 is installed on a side surface of a circulation line of a lithium battery, and a driving direction of the horizontal driving portion 100 is parallel to the circulation line, so that a moving direction of the laser welding end 200 is consistent with the circulation direction of the lithium battery; the laser excitation component is in the prior art, such as a laser with adjustable power;
When the welding of the primary lithium battery is completed, the horizontal driving unit 100 drives the laser welding end 200 to move in the opposite direction to move to the initial position.
As shown in fig. 2 to 4, the laser welding end 200 includes a connection housing 210, a first limit ring 220, and a second limit ring 230, the laser part 300 has a cylindrical structure, a spherical protrusion is disposed on the outer side of the laser part 300, the spherical center of the spherical protrusion coincides with the cylindrical axis of the laser part 300, and specifically, the laser part 300 is formed by a cylindrical structure passing through a spherical structure having a through hole penetrating a sphere along the spherical center, so that the laser part 300 swings/rotates around the spherical center of the spherical protrusion when swinging/rotating; the connection housing 210 is a cylindrical housing, the connection housing 210 is fixedly connected to the output end of the horizontal driving portion 100, the first limiting ring 220 and the second limiting ring 230 are both in a circular ring structure, the inner sides of the first limiting ring 220 and the second limiting ring 230 are both attached to the spherical protrusion, the second limiting ring 230 and the third limiting ring 240 are arranged in parallel and are symmetrical about the spherical center of the spherical protrusion, so that the second limiting ring 230 and the third limiting ring 240 play a role of limiting the laser portion 300, and the inner circular radiuses of the second limiting ring 230 and the third limiting ring 240 are smaller than the radius of the spherical protrusion and larger than the radius of the cross section of the laser portion 300, and the inner radiuses of the second limiting ring 230 and the third limiting ring 240 are the same, when the second limiting ring 230 and the third limiting ring 240 are arranged in parallel, the second limiting ring 230 and the third limiting ring 240 are symmetrical about the spherical center of the spherical protrusion, and can swing around the spherical protrusion 300;
The second stop collar 230 and the third stop collar 240 are both annular, and the second stop collar 230 is fixedly connected to the inner wall of the connection housing 210;
The connection housing 210 includes a first housing 211 and a second housing 212, the first housing 211 and the second housing 212 are fixedly connected by bolts, the first housing 211 and the second housing 212 form a cylindrical structure, and the laser part 300 and the welding driving assembly are installed in the laser welding end 200;
In this embodiment, the second limiting ring 230 is rotationally connected with the laser portion 300, the second limiting ring 230 is mounted in the connection housing 210 through a third limiting ring 240, the third limiting ring 240 is in a cylindrical shape with openings at two ends, an annular limiting cylinder body attached to the spherical protrusion is disposed on the inner side of the second limiting ring 230, the ends of the third limiting ring 240 are attached to the annular limiting cylinder body, so that the second limiting ring 230 can rotate around the axis of the third limiting ring 240, the third limiting ring 240 is far away from the opening of the second limiting ring 230, an annular connecting plate is disposed at the outer side of the connecting plate and fixedly connected to the inner wall of the connection housing 210, in this embodiment, a plurality of fixing rings are disposed on the inner wall of the connection housing 210, the first limiting ring 220 and the third limiting ring 240 are all fixed to the connection housing 210 through fixing rings, two fixing rings are disposed on two sides of the first limiting ring 220 and the third limiting ring 240, namely, when the second limiting ring 230 and the third limiting ring 240 are fixed to the connection housing 210 through the first limiting ring 220 and the second limiting ring or the third limiting ring 240, and the first limiting ring 240 are uniformly distributed on the first limiting ring and the second limiting ring 240 through the first limiting ring and the third limiting ring 240.
In this embodiment, the welding driving portion includes two telescopic assemblies 250 and a rotation module 260 for driving the second limiting ring 230 to rotate, the telescopic assemblies 250 are fixedly connected to the second limiting ring 230, the telescopic assemblies 250 are symmetrical about the axis of the laser portion 300, when the output ends of the telescopic assemblies 250 extend, the laser portion 300 is jacked to deflect around the spherical center of the spherical protrusion, when the two telescopic assemblies 250 are jacked alternately, the laser portion 300 can be controlled to swing, when one telescopic assembly 250 is jacked, the second limiting ring 230 rotates around the laser portion 300 under the driving of the rotation module 260, so that the position of the telescopic assemblies 250 jacked up the laser portion 300 changes, the laser portion 300 rotates around the spherical center of the spherical protrusion in an inclined state, and when welding, the light spot on the lithium battery moves around the lithium battery in a circular manner, thereby welding the sealing nail;
In this embodiment, the telescopic assembly 250 is preferably an electromagnet type telescopic structure, because the telescopic assembly 250 rotates along with the second limiting ring 230, when the telescopic assembly 250 is electrically driven, the electric brush structure can be used to supply power to the telescopic assembly 250, and when the structure such as pneumatic structure, hydraulic structure or the like is adopted, the pressure medium is not easy to supply; the telescopic assembly 250 is fixedly connected to the second limiting ring 230 by a screw;
In this embodiment, a driving plate 314 having a ring shape and being perpendicular to the axis of the laser portion 300 is disposed on the outer side of the spherical protrusion, the center of the spherical protrusion is located on the plane where the driving plate 314 is located, the telescopic track of the output shaft of the telescopic assembly 250 is parallel to the axis of the laser portion 300, and when the output shaft of the telescopic assembly 250 extends out, the end of the output shaft of the telescopic assembly 250 abuts against the driving plate 314 and applies pressure to the driving plate 314, so as to jack up the driving plate 314, so that the laser portion 300 is inclined;
The rotating module 260 includes a rotating motor 261 and a connecting assembly 262, the rotating motor 261 is fixedly connected to the third limiting ring 240, the connecting assembly 262 is connected with the connecting assembly 262 to drive the second limiting ring 230 to rotate, the connecting assembly 262 is a gear ring, a driving gear is fixed on an output shaft of the rotating motor 261, the rotating motor 261 is fixedly connected to the third limiting ring 240 through a screw, the driving gear is meshed with the connecting assembly 262, so that when the rotating motor 261 rotates, the connecting assembly 262 is driven to rotate to drive the second limiting ring 230 to rotate, and the connecting assembly 262 is fixedly connected to the second limiting ring 230 through a screw;
In some examples, the connection assembly 262 may also be a pulley, and the output shaft of the rotation motor 261 may be provided with a driving pulley.
As a preferred implementation manner in this embodiment, the welding driving portion further includes a reset assembly 400, where the reset assembly 400 is configured to control the laser portion 300 to restore to the original shape when the output end of the telescopic assembly 250 is contracted, that is, the axis of the laser portion 300 coincides with the axis of the laser welding end 200, so as to facilitate observing the position of the light spot;
Specifically, as shown in fig. 5 and 6, the reset assembly 400 includes a reset connection ring 410 and a plurality of reset springs 420, the reset connection ring 410 is fixedly connected to the inner wall of the connection housing 210, two ends of the reset springs 420 are respectively fixedly connected to the inner side of the reset connection ring 410 and the driving plate 314, and the plurality of reset springs 420 are uniformly distributed around the axis of the laser portion 300 in the circumferential direction;
In this embodiment, twelve groups of return springs 420 are provided, the connection mode of the return connection ring 410 and the connection housing 210 is the same as the connection mode of the first limit ring 220 and the connection housing 210, a first spring hole is provided on the inner side of the return connection ring 410, a second spring hole is provided on the driving plate 314, parameters of the twelve groups of return springs 420 are the same, two ends of the return springs 420 are hooked in the first spring hole and the second spring hole, the twelve groups of return springs 420 are divergently arranged, so that the stress of the laser part 300 in the circumferential direction is the same, and the laser part 300 can be parallel to the connection housing 210 under the tension of the return springs 420 and the limit of the first limit ring 220 and the second limit ring 230;
In some other examples, the return spring 420 may be replaced by an annular elastic sheet, such as an elastic rubber sheet, where the inner side of the rubber sheet is fixedly connected to the edge of the driving plate 314 by means of a rivet or glue, and the outer side of the rubber sheet is fixedly connected to the inner side of the return connection ring 410 by means of a rivet or glue.
In this embodiment, as shown in fig. 3, the laser part 300 includes a light shielding cylinder 310, and a laser head 320, a shaping lens 330 and a focusing lens 340 fixedly connected to the light shielding cylinder 310, the light shielding cylinder 310 is cylindrical, the light shielding cylinder 310 plays a role of shielding light, the spherical protrusion is located at the outer side of the light shielding cylinder 310, the laser head 320 is fixedly connected to an end of the light shielding cylinder 310, the laser head 320 is used for connecting a laser excitation component, when the laser excitation component is connected to the laser head 320 through an optical fiber, so that the laser head 320 emits laser light, the focusing lens 340 is connected to an end of the light shielding cylinder 310 far from the laser head 320 through a focusing component 500, the shaping lens 330 is fixedly connected to the inside of the light shielding cylinder 310, the laser head 320 is located at a focal point of the shaping lens 330, the laser light emitted from the laser head 320 is irradiated onto the shaping lens 330, is focused by the shaping lens 330 into parallel light, then irradiated onto the focusing lens 340, and then irradiated onto a lithium battery after being focused by the focusing lens 340, and the focused by the focusing lens 340 is used for generating a cleaning/welding light spot on the lithium/welding battery.
The laser head 320 is in the prior art, the laser head 320 is fixed to the shading cylinder 310 through a clamping groove structure, the shaping lens 330 is fixedly connected to the inner wall of the shading cylinder 310 through a clamping groove or an adhesive mode, the laser head 320, the shaping lens 330 and the focusing lens 340 are coaxial, and when the size of a laser spot is adjusted, the distance between the focusing lens 340 and the shaping lens 330 is adjusted through a focusing assembly 500;
As shown in fig. 3 to 5, the light shielding barrel 310 includes a first half shell 311 and a second half shell 312, the first half shell 311 and the second half shell 312 are fixedly connected by screws, the first half shell 311 and the second half shell 312 are both in a half-groove shape, the first half shell 311 and the second half shell 312 form a cylindrical light shielding barrel 310, spherical protrusions 313 are provided on the first half shell 311 and the second half shell 312, and spherical protrusions 313 on the first half shell 311 and the second half shell 312 form spherical protrusions.
In this embodiment, as shown in fig. 3 and fig. 7 to fig. 9, the focusing assembly 500 includes a lens fixing cylinder 510, a rotating cylinder 520, and a fixing cylinder 530 coaxially disposed, the lens fixing cylinder 510, the rotating cylinder 520, and the fixing cylinder 530 are all cylinders with openings at both ends, the rotating cylinder 520 is located at the inner side of the fixing cylinder 530, the lens fixing cylinder 510 is located at the inner side of the rotating cylinder 520, the focusing lens 340 is fixedly connected to the end of the lens fixing cylinder 510, an adjusting shaft 513 is disposed at the outer side of the lens fixing cylinder 510, a plurality of arc holes 521 are disposed at the side of the rotating cylinder 520, a plurality of limit grooves 535 parallel to the axis of the fixing cylinder 530 are disposed at the inner side of the fixing cylinder 530, the adjusting shaft 513 passes through the arc holes 535 and is disposed in the limit grooves 535, the fixing cylinder 530 is fixedly connected to the light shielding cylinder 310, the rotating assembly is disposed on the fixing cylinder 530 to drive the rotating cylinder 520 to rotate, and when the rotating cylinder 520 rotates, the adjusting shaft 513 drives the lens fixing cylinder 510 along the arc holes 521, and thereby the adjusting shaft 330 moves along the arc-shaped lens axis 521;
Specifically, in this embodiment, three adjusting shafts 513, arc holes 521 and limit grooves 535 are provided, and the adjusting shafts 513, arc holes 521 and limit grooves 535 are all uniformly distributed around the axis of the lens-fixing barrel 510 in the circumferential direction, the adjusting shafts 513 are cylindrical protrusions provided on the outer wall of the lens-fixing barrel 510, the arc holes 521 are kidney-shaped and arc-shaped through holes penetrating the side wall of the rotating inner barrel 520, the limit grooves 535 are linear grooves provided on the inner wall of the fixed outer barrel 530, when the rotating inner barrel 520 rotates, the positions of the adjusting shafts 513 in the arc holes 521 are changed, and the arc holes 521 drive the adjusting shafts 513 to slide in the limit grooves 535, so as to control the lens-fixing barrel 510 to move along the axis thereof;
The lens-fixing barrel 510 includes a fixing barrel 511 and a lens cover 512, the lens cover 512 being fixed to the mouth of the fixing barrel 511 by screw connection, the lens cover 512 being for fixing the focus lens 340; the fixed outer cylinder 530 is fixed to the light shielding cylinder 310 through an outer cylinder fixing ring 540, a limit outer ring 536 is arranged outside the fixed outer cylinder 530, the outer cylinder fixing ring 540 is mounted on the fixed outer cylinder 530 through a threaded connection, and the outer cylinder fixing ring 540 and the limit outer ring 536 clamp the end part of the light shielding cylinder 310, so that the fixed outer cylinder 530 is fixed on the light shielding cylinder 310;
The fixed outer cylinder 530 is a stepped cylinder, the fixed outer cylinder 530 is provided with an outer cylinder sinking platform 531 at one end far away from the focusing lens 340, the rotating assembly comprises a magnetic block 523, and a second electromagnet 534 and a first electromagnet 533 positioned at two sides of the magnetic block 523, the magnetic block 523 is fixedly connected to the outer side of the rotating inner cylinder 520, the first electromagnet 533 and the second electromagnet 534 are fixedly connected to the inner side of the fixed outer cylinder 530, when the rotating inner cylinder 520 is driven to rotate, the ends of the first electromagnet 533 and the second electromagnet 534, which are close to the magnetic block 523, generate the same magnetic poles, so that the magnetic block 523 drives the rotating inner cylinder 520 to rotate, when the rotating direction of the rotating inner cylinder 520 is changed, the magnetic poles generated by the first electromagnet 533 and the second electromagnet 534 are changed, as shown in fig. 8, taking the installation positions of the first electromagnet 533 and the second electromagnet 534 as examples, when the rotary inner cylinder 520 is required to rotate clockwise, the magnetic pole of the first electromagnet 533 near one end of the magnetic block 523 is the same as the magnetic pole of the magnetic block 523 near one end of the first electromagnet 533, that is, the first electromagnet 533 repels the magnetic block 523, the magnetic pole of the second electromagnet 534 near one end of the magnetic block 523 is opposite to the magnetic pole of the magnetic block 523 near one end of the second electromagnet 534, that is, the second electromagnet 534 attracts the magnetic block 523, and due to the limited radiation range of the magnetic field, the rotation angle of the rotary inner cylinder 520 can be effectively increased by arranging the first electromagnet 533 and the second electromagnet 534, so that the bending angle of the arc-shaped hole 521 is smaller, the rotary inner cylinder 520 is easier to rotate, meanwhile, the first electromagnet 533 and the second electromagnet 534 also play a role of limiting the rotary inner cylinder 520, preventing the welding head from rotating due to vibration in the welding process;
In this embodiment, the rotating assemblies are provided with three groups, the three groups of rotating assemblies are uniformly distributed around the axis of the lens fixing barrel 510, a connecting block 532 is disposed on the inner wall of the fixing outer barrel 530, the first electromagnet 533 and the second electromagnet 534 are fixedly connected to the connecting block 532 by means of screws or gluing, the outer wall of the rotating inner barrel 520 is provided with a fixing lug 522, and the magnetic block 523 is fixedly inlaid on the fixing lug 522 by means of gluing;
In this embodiment, the focusing assembly 500 further includes an outer cylinder fixing ring 540, where the outer cylinder fixing ring 540 is cylindrical, the outer cylinder fixing ring 540 is fixed to the mouth of the fixed outer cylinder 530 through threaded connection, and is used for limiting the rotating inner cylinder 520, and the size of the inner aperture of the outer cylinder fixing ring 540 needs not to block laser.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the invention. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination" depending on the context.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. Cell seal nail welding set based on laser flight welding principle, its characterized in that, welding set includes:
a horizontal driving section;
The laser welding device comprises a horizontal driving part, a laser welding end, a welding driving part, a first limiting ring and a second limiting ring, wherein the horizontal driving part is used for driving the laser welding end to linearly move at a preset speed, a laser part is arranged in the laser welding end for welding a sealing nail of a lithium battery, the laser welding end is internally provided with a welding driving part for driving the laser part to swing and rotate around a point in an inclined mode, the outer side of the laser part is provided with a spherical bulge, the outer side of the spherical bulge is provided with the first limiting ring and the second limiting ring which limit the first limiting ring and the second limiting ring are fixed on a connecting shell of the laser welding end, the second limiting ring is rotationally connected with the laser part, the second limiting ring is rotationally connected into the connecting shell, the welding driving part comprises two telescopic assemblies symmetrically arranged relative to the axis of the laser part and a rotating module for driving the second limiting ring to rotate, and the telescopic assemblies are fixedly connected onto the second limiting ring, and when the output end of the telescopic assemblies stretches out, the telescopic assemblies jack the laser part to deflect around the spherical bulge; when the laser part swings, the two telescopic assemblies are alternatively jacked up; when the laser part rotates around the spherical center of the spherical bulge in an inclined state, and one telescopic component is jacked up, the second limiting ring rotates under the drive of the rotating module to drive the telescopic component to rotate around the laser part;
the laser part is also internally provided with a focusing component for adjusting the laser focus, and is also connected with a laser excitation component for generating at least two lasers with different powers;
when the sealing nail and the surface of the battery are cleaned, the laser part swings under the drive of the welding driving part, and the light spot irradiated on the battery by the laser part moves in a zigzag manner;
When the sealing nail is welded, the laser part rotates around a point in an inclined mode under the drive of the welding driving part, and the light spot irradiated on the battery by the laser part moves at the joint of the sealing nail and the battery.
2. The welding device for the battery cell sealing nail based on the laser flying welding principle according to claim 1, wherein the laser part is of a cylindrical structure, and the spherical center of the spherical protrusion coincides with the cylindrical axis of the laser part;
the connecting shell is fixedly connected to the output end of the horizontal driving part, the first limiting ring and the second limiting ring are of circular ring structures, the inner sides of the first limiting ring and the second limiting ring are attached to the spherical protrusions, and the first limiting ring and the second limiting ring are located on two sides of the spherical centers of the spherical protrusions to play a limiting role.
3. The welding device for the battery cell sealing nail based on the laser flying welding principle according to claim 2, wherein an annular driving plate perpendicular to the axis of the laser part is arranged on the outer side of the spherical protrusion, and when the output shaft of the telescopic assembly extends out, the end part of the output shaft of the telescopic assembly abuts against the driving plate and applies pressure to the driving plate.
4. The welding device for cell sealing nails based on the principle of laser flying welding according to claim 3, wherein the welding driving part further comprises:
A reset connection ring fixedly connected to an inner wall of the connection housing;
and the two ends of the reset springs are respectively fixedly connected to the inner side of the reset connecting ring and the driving plate, and the reset springs are uniformly distributed around the axis of the laser part in the circumferential direction.
5. The cell sealing pin welding device based on the laser flying welding principle according to any one of claims 2 to 4, wherein the laser section comprises:
the spherical bulge is positioned on the outer side of the shading cylinder;
The laser head is fixedly connected to the end part of the shading cylinder, the laser head is used for being connected with a laser excitation assembly, the focusing lens is connected to the end part of the shading cylinder, which is far away from the laser head, of the shading cylinder, laser emitted from the laser head irradiates onto the shaping lens, is shaped into parallel light by the shaping lens and then irradiates onto the focusing lens, and then irradiates onto a lithium battery after being focused by the focusing lens.
6. The die seal nail welding apparatus based on the laser flying welding principle according to claim 5, wherein the focusing assembly comprises:
the lens fixing barrel is used for fixing the focusing lens, and an adjusting shaft is arranged on the outer side of the lens fixing barrel;
the lens fixing cylinder is positioned at the inner side of the rotating inner cylinder, and an arc-shaped hole is formed in the side surface of the rotating inner cylinder;
The fixed outer cylinder is fixedly connected to the shading cylinder, the rotating inner cylinder is positioned at the inner side of the fixed outer cylinder, a limiting groove parallel to the axis of the fixed outer cylinder is formed in the inner side of the fixed outer cylinder, and the adjusting shaft penetrates through the arc-shaped hole and is arranged in the limiting groove;
the rotating assembly is positioned in the fixed shell and used for driving the rotating inner cylinder to rotate, and when the rotating inner cylinder rotates, the arc-shaped hole drives the lens fixed cylinder to move along the axis of the lens fixed cylinder through the adjusting shaft.
7. The device of claim 6, wherein the rotating assembly comprises:
The magnetic block is fixedly connected to the outer side of the rotary inner cylinder;
The first electromagnet and the second electromagnet are fixedly connected to the inner side of the fixed outer cylinder, and when the rotary inner cylinder is driven to rotate, the ends, close to the magnetic blocks, of the first electromagnet and the second electromagnet generate the same magnetic poles.
8. The welding device for cell sealing nails based on the principle of laser flying welding according to claim 7, wherein the rotating assemblies are provided with a plurality of groups, and the rotating assemblies are uniformly distributed around the axis of the lens fixing barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410427312.4A CN118002915B (en) | 2024-04-10 | 2024-04-10 | Cell sealing nail welding device based on laser flying welding principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410427312.4A CN118002915B (en) | 2024-04-10 | 2024-04-10 | Cell sealing nail welding device based on laser flying welding principle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118002915A CN118002915A (en) | 2024-05-10 |
| CN118002915B true CN118002915B (en) | 2024-06-14 |
Family
ID=90954181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410427312.4A Active CN118002915B (en) | 2024-04-10 | 2024-04-10 | Cell sealing nail welding device based on laser flying welding principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118002915B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414748A (en) * | 2015-12-09 | 2016-03-23 | 北京工业大学 | Laser welding device with focus capable of rotating and vertically vibrating |
| CN108714747A (en) * | 2018-08-01 | 2018-10-30 | 江苏逸飞激光设备有限公司 | A kind of sealing nail welding detecting system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08215873A (en) * | 1995-02-10 | 1996-08-27 | Sumitomo Metal Ind Ltd | Method and device for correcting alignment for laser beam machine |
| CN110936036B (en) * | 2019-12-12 | 2021-12-10 | 中沃(泰州)激光科技有限公司 | Laser drilling equipment based on hemispherical shell workpiece and laser drilling process thereof |
| CN115805374B (en) * | 2023-02-08 | 2024-01-02 | 无锡超强伟业科技有限公司 | Laser welding gun |
-
2024
- 2024-04-10 CN CN202410427312.4A patent/CN118002915B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414748A (en) * | 2015-12-09 | 2016-03-23 | 北京工业大学 | Laser welding device with focus capable of rotating and vertically vibrating |
| CN108714747A (en) * | 2018-08-01 | 2018-10-30 | 江苏逸飞激光设备有限公司 | A kind of sealing nail welding detecting system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118002915A (en) | 2024-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR900006065A (en) | Method and apparatus for remote welding of bushes in pipes, especially in steam generators of nuclear power plants | |
| JPH0380596B2 (en) | ||
| CN201425656Y (en) | Collimation head device | |
| CN118002915B (en) | Cell sealing nail welding device based on laser flying welding principle | |
| JP2021186880A (en) | Laser head for achieving dynamic adjustment of laser spot using high frequency and superhigh frequency micro-vibration | |
| CN111638592A (en) | Laser tracking and aiming directional emission test system and test method | |
| CN108941896A (en) | Laser focusing device and laser system | |
| JPH08169100A (en) | Device for forming stencil for printing | |
| CN110899958A (en) | Handheld laser processing head and laser processing equipment | |
| CN209632300U (en) | A kind of laser-beam welding machine of adjustable focal spot | |
| CN113707976A (en) | Battery cover-closing pre-spot welding method | |
| CN105618932A (en) | Loop wire welding head used for laser clamping spot welding | |
| JP2005305985A (en) | Joining method of tubular materials, jointing method of tubular material and saddle, and laser jointing device | |
| CN115805374B (en) | Laser welding gun | |
| CN218983612U (en) | Focusing transmission system of laser cutting head | |
| CN110202140A (en) | A kind of laser printing head and hot spot switching method with hot spot automatic switching function | |
| CN110153559A (en) | A kind of rotary laser plumb joint | |
| JP3454773B2 (en) | Welding method for upper end plug of fuel rod | |
| CN103170731A (en) | Laser lens with passive seam tracking | |
| CN219151878U (en) | Laser processing head | |
| CN111545919A (en) | Laser shock peening device and method for multi-beam coupling light spots | |
| CN110614431A (en) | Cylindrical lens focusing-based handheld welding optical mechanism and working method thereof | |
| CN215846345U (en) | Hand-held type laser welding device | |
| CN110976440A (en) | Laser cleaning device and cleaning method | |
| CN221019223U (en) | Automatic track laser welding device of focus position |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |