CN114131196A - Battery series-parallel laser welding equipment - Google Patents
Battery series-parallel laser welding equipment Download PDFInfo
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- CN114131196A CN114131196A CN202111616074.4A CN202111616074A CN114131196A CN 114131196 A CN114131196 A CN 114131196A CN 202111616074 A CN202111616074 A CN 202111616074A CN 114131196 A CN114131196 A CN 114131196A
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- laser welding
- taper sleeve
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- rack
- jacking
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- 238000003466 welding Methods 0.000 title claims abstract description 78
- 239000000428 dust Substances 0.000 claims description 33
- 230000000670 limiting effect Effects 0.000 claims description 18
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 29
- 230000001681 protective effect Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Classifications
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery series-parallel laser welding device which is suitable for welding a connecting sheet at a pole post part lapped between adjacent batteries in a battery module with the pole post. The tray conveying line is assembled on the rack and horizontally conveys the trays and the battery modules supported by the trays, and the jacking mechanism is assembled on the rack and is positioned right below the tray conveying line; the clamp is assembled on the rack and positioned right above the tray conveying line, and the clamp is also aligned with the jacking mechanism; the jacking mechanism jacks up the tray conveyed by the tray conveying line and the battery module carried by the tray together to enable the clamp to be abutted against the connecting piece in the battery module; the robot is positioned beside the rack, the laser welding head is assembled at the tail joint of the robot, and the laser welding head is matched with the robot to weld the pole and the connecting sheet pressed by the clamp; the purpose of welding the poles of the adjacent batteries in the battery module in series or in parallel is achieved.
Description
Technical Field
The invention relates to the field of power battery production, in particular to battery series-parallel laser welding equipment.
Background
In a new energy automobile, the power battery can not be used, and the electric energy provided by the power battery can meet the power requirement of the automobile so as to gradually replace the mode of providing power by gasoline, diesel oil and the like.
In the production process of the power battery, numerous processes are involved, and series-parallel welding between adjacent batteries in the battery module is one of the numerous processes. Specifically, for series-parallel welding between adjacent batteries, connecting sheets (e.g., aluminum connecting sheets) are used to connect the poles of the adjacent batteries in the battery module in series or in parallel, and then the connecting sheets are welded to the poles of the batteries by laser welding machines, so as to achieve the purpose of series or parallel connection of the adjacent batteries in the battery module.
In the process of welding the batteries in series and parallel, an operator is required to convey the battery module to a welding station and then weld the battery module by using a laser welding machine, so that the burden of the operator is heavy and the welding efficiency is low.
Therefore, a need exists for a series-parallel laser welding apparatus with high welding efficiency to overcome the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide a battery series-parallel laser welding device with high welding efficiency.
In order to achieve the purpose, the battery series-parallel laser welding equipment is suitable for welding a connecting sheet, which is overlapped at a pole between adjacent batteries, in a battery module with the pole, and comprises a rack, a tray conveying line, a clamp, a robot, a jacking mechanism and a laser welding head. The tray conveying line is assembled on the rack and horizontally conveys trays and battery modules supported by the trays, the jacking mechanism is assembled on the rack and is positioned under the tray conveying line, the clamp is assembled on the rack and is positioned over the tray conveying line, the clamp is also aligned with the jacking mechanism along the vertical direction of the rack, and the jacking mechanism jacks up the trays conveyed by the tray conveying line and the battery modules supported by the trays together so that the clamp is abutted against connecting pieces in the battery modules; the robot is located beside the rack, the laser welding head is assembled at the tail joint of the robot, and the laser welding head is used for welding the pole with the connecting sheet pressed by the clamp under the cooperation of the robot.
Preferably, the battery series-parallel laser welding equipment further comprises a CCD photographing device, wherein the CCD photographing device is assembled at the tail joint of the robot and is positioned beside the laser welding head.
Preferably, the fixture comprises a fixture support plate and a plurality of shielding gas flow guiding nozzles which are arranged in an array and penetrate through the fixture support plate along the vertical direction of the rack, the protective gas flow guide nozzle comprises an inner taper sleeve and an outer taper sleeve which are respectively large at the top and small at the bottom, the clamp support plate is assembled and connected with the machine frame, the outer taper sleeve is assembled on the clamp carrier plate, the inner taper sleeve is sleeved in the outer taper sleeve from the upper part to the lower part, the outer taper sleeve protrudes downwards from the inner taper sleeve, the gap between the inner taper sleeve and the outer taper sleeve is gradually decreased from top to bottom, the gap between the inner taper sleeve and the outer taper sleeve is also arranged with the upper end closed and the lower end opened, the outer taper sleeve is provided with an input channel communicated with the upper end of the gap, and the jacking mechanism jacks up the tray conveyed by the tray conveying line and the battery module carried by the tray together to enable the lower end of the outer taper sleeve to be abutted against the connecting sheet.
Preferably, the outer side wall of the lower end of the inner taper sleeve is provided with an outer chamfer structure, and the corresponding position of the inner side wall of the outer taper sleeve is provided with a matched inner chamfer structure.
Preferably, the clearance between the position of the inner taper sleeve adjacent to the outer chamfer structure and the position of the outer taper sleeve adjacent to the inner chamfer structure is smaller than the clearance between the outer chamfer structure and the inner chamfer structure.
Preferably, a supporting convex ring platform extends outwards from the outer side wall of the upper end of the inner taper sleeve, an annular cavity matched with the supporting convex ring platform is formed in the upper end of the outer taper sleeve, and the supporting convex ring platform is embedded into the annular cavity in a matching mode.
Preferably, the protective gas nozzle further comprises a threaded connector located beside the inner taper sleeve, and the threaded connector is threaded in the outer taper sleeve along the vertical direction of the clamp support plate and presses against the bearing convex ring platform from above.
Preferably, the shielding gas nozzle further includes a connection limiting member and an elastic member, each of which is located beside the inner taper sleeve, the connection limiting member penetrates through the outer taper sleeve and the fixture support plate along the vertical direction of the fixture support plate, the outer taper sleeve can slide on the connection limiting member along the vertical direction of the fixture support plate in a limiting manner, the elastic member is located above the outer taper sleeve and is sleeved on the connection limiting member, and the elastic member constantly has a tendency of driving the outer taper sleeve and the inner taper sleeve to slide together to a position where the outer taper sleeve abuts against the fixture support plate.
Preferably, the battery series-parallel laser welding equipment further comprises a dust remover, the dust remover is located beside the robot, dust suction heads communicated with the dust remover are respectively installed on the front side and the rear side of the fixture support plate, all the protective gas flow nozzles are located between the dust suction head on the front side of the fixture support plate and the dust suction head on the rear side of the fixture support plate, and an air suction port of each dust suction head is located obliquely above the inner taper sleeve.
Preferably, the jacking mechanism includes a jacking plate, a jacking driver and a guiding component, the jacking plate is provided with positioning columns, the positioning columns are arranged on the jacking plate in a diagonal or matrix manner, the jacking driver is installed on the rack and located below the jacking plate, the output end of the jacking driver is assembled and connected with the jacking plate, and the guiding component is assembled on both the jacking plate and the rack.
Compared with the prior art, the tray conveying line is assembled on the rack and horizontally conveys the trays and the battery modules supported by the trays, the jacking mechanism is assembled on the rack and positioned right below the tray conveying line, the clamp is assembled on the rack and positioned right above the tray conveying line, and the clamp is aligned with the jacking mechanism along the vertical direction of the rack; when the tray transferred to the tray conveying line from the previous process is conveyed to the position aligned with the jacking mechanism by the tray conveying line, the tray conveyed by the tray conveying line and the battery module carried by the tray are jacked upwards by the jacking mechanism, so that the clamp is abutted against the connecting piece in the battery module; then, the pole and the connecting piece pressed by the clamp are automatically welded by the laser welding head under the cooperation of the robot; after welding is finished, the tray is placed on the tray conveying line through the jacking mechanism, the tray conveying line continues to convey the tray bearing the welded battery module and the tray bearing the battery module to be welded forwards, and welding efficiency is greatly improved.
Drawings
Fig. 1 is a schematic perspective view of a battery series-parallel laser welding apparatus according to the present invention.
Fig. 2 is a schematic perspective view of a rack in the battery series-parallel laser welding equipment and a tray conveyor line, a jacking mechanism and a clamp on the rack.
Fig. 3 is a schematic perspective view of a jacking mechanism, a tray conveying line, a tray and a battery module in the battery series-parallel laser welding equipment.
Fig. 4 is a schematic perspective exploded view of fig. 3.
Fig. 5 is a schematic view of fig. 4 at another angle.
Fig. 6 is a schematic perspective view of a jig in the series-parallel laser welding apparatus for batteries according to the present invention.
Fig. 7 is a perspective view of the clamp of fig. 6 at another angle.
Fig. 8 is a schematic perspective view of a shielding gas guiding nozzle of a jig in a series-parallel laser welding apparatus for batteries according to the present invention.
Fig. 9 is a schematic view of the inner structure of the shielding gas nozzle shown in fig. 8 cut by the left and right planes passing through the center line thereof.
Fig. 10 is an exploded view of fig. 9.
Fig. 11 is a schematic view of the protective gas nozzle of fig. 9 and the lifting plate clamping the connecting piece together and showing a flowing state of the protective gas.
Fig. 12 is a schematic perspective view of the laser welding head and the CCD camera device mounted on the distal joint in the battery serial-parallel laser welding apparatus of the present invention.
Detailed Description
In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.
Referring to fig. 1, 3 and 11, the battery series-parallel laser welding apparatus 100 of the present invention is adapted to weld the connection tab 220 overlapping the terminal 211 between the adjacent batteries 210 in the battery module 200 to the terminal 211, so as to achieve the purpose of connecting the adjacent batteries 210 in the battery module 200 in series or in parallel by means of the connection tab 220. The battery series-parallel laser welding equipment 100 comprises a rack 10, a tray conveying line 20, a clamp 30, a robot 40, a jacking mechanism 50 and a laser welding head 60. The tray conveyor line 20 is assembled on the rack 10 and horizontally conveys the trays 300 and the battery modules 200 supported by the trays 300, preferably, the tray conveyor line 20 is installed at the horizontal carrier plate 11 in the middle of the rack 10 to provide a sufficient position for installing the clamps 30 on the rack 10, and of course, the tray conveyor line 20 may also be installed at other positions of the rack 10 according to actual needs; the jacking mechanism 50 is assembled on the rack 10 and located right below the tray conveyor line 20, so as to meet the requirement that the jacking mechanism 50 jacks up the tray 300 conveyed by the tray conveyor line 20 together with the battery module 200 carried by the tray 300, preferably, the jacking mechanism 50 is installed at the horizontal carrier plate 11 of the rack 10, but not limited thereto; the clamp 30 is assembled on the rack 10 and located right above the tray conveying line 20, the clamp 30 is also aligned with the jacking mechanism 50 along the up-down direction of the rack 10 (indicated by a double-headed arrow in the rack 10 in fig. 1), and the jacking mechanism 50 jacks up the tray 300 conveyed by the tray conveying line 20 together with the battery module 200 carried by the tray 300, so that the clamp 30 is pressed against the connecting piece 220 in the battery module 200, as shown in fig. 11; the robot 40 is located beside the machine frame 10, for example but not limited to the back side of the machine frame 10 shown in fig. 1, the laser welding head 60 is assembled at the tail joint 41 of the robot 40, and the laser welding head 60 welds the pole 211 with the connecting piece 220 pressed by the fixture 30 under the cooperation of the robot 40. Specifically, in fig. 1 and 12, the battery serial-parallel laser welding apparatus 100 of the present invention further includes a CCD photographing device 70, the CCD photographing device 70 is mounted at the end joint 41 of the robot 40 and is located beside the laser welding head 60, for example, but not limited to, the left side as shown in fig. 12, so that by using the CCD photographing device 70, the positional relationship between the connecting piece 220 and the post 211 can be collected before welding, data is provided for welding, and thus the reliability of welding between the connecting piece 220 and the post 211 by the laser welding head 60 under the driving of the robot 40 is ensured. More specifically, the following:
as shown in fig. 1, the robot 40 is a six-axis robot, so that the robot 40 can move in six axes, and the robot 40 can drive the laser welding head 60 to move in six axes more flexibly and reliably, so that the laser welding head 60 can weld the welding positions of the connecting piece 220 and the pole 211 together better; of course, the robot 40 may also be a three-axis robot, a four-axis robot, or a five-axis robot according to actual needs, so as to reduce the use cost of the robot 40.
As shown in fig. 2 to 5, the jacking mechanism 50 includes a jacking plate 51, a jacking actuator 52 and a guide assembly 53. The positioning columns 54 are assembled on the lifting plate 51, and the positioning columns 54 are diagonal on the lifting plate 51, so that the use amount of the positioning columns 54 can be reduced under the condition that the tray 300 is reliably positioned, and of course, the positioning columns 54 can also be arranged on the lifting plate 51 in a matrix manner according to actual needs, so that the limitation is not shown in the attached drawings; the jacking driver 52 is arranged on the frame 10 and is positioned below the jacking plate 51, the output end 521 of the jacking driver 52 is assembled and connected with the jacking plate 51, and the guide component 53 is assembled on both the jacking plate 51 and the frame 10; so that the jacking driver 52 can more smoothly drive the jacking plate 51 to move up and down under the guidance of the guide assembly 53. Specifically, in fig. 6, the output end 521 of the jack-up driver 52 is disposed upward to simplify the fitting relationship between the output end 521 of the jack-up driver 52 and the jack-up plate 51; the guide assemblies 53 are two sets, one set is located outside the left side of the jacking actuator 52, and the other set is located outside the right side of the jacking actuator 52. For example, the jacking actuator 52 is a pneumatic cylinder or a hydraulic cylinder, and the guiding component 53 is composed of a guiding rod and a guiding sleeve, but not limited thereto. It can be understood that when the lift mechanism 50 is mounted on the horizontal carrier plate 11 of the frame 10, the guide assembly 53 is mounted on both the horizontal carrier plate 11 and the lift plate 51, the lift actuator 52 is mounted on the horizontal carrier plate 11 from below the horizontal carrier plate 11, and the output end 521 of the lift actuator 52 passes upward through the horizontal carrier plate 11 and is connected to the lift plate 51.
As shown in fig. 7 to 10, the fixture 30 includes a fixture support plate 31 and sixteen shielding gas nozzles 32 penetrating the fixture support plate 31 in the vertical direction of the rack 10 and arranged in an array, for example, in fig. 7 and 8, all the shielding gas nozzles 32 are arranged in two rows, such that each row includes eight shielding gas nozzles 32, but not limited thereto. The protective gas flow guiding nozzle 32 comprises an inner taper sleeve 321 and an outer taper sleeve 322 which are respectively large at the top and small at the bottom; the outer taper sleeve 322 is assembled on the clamp carrier plate 31, and the clamp carrier plate 31 provides a supporting function and an assembling place for the outer taper sleeve 322; the inner taper sleeve 321 is sleeved in the outer taper sleeve 322 from the upper part and the lower part, and the outer taper sleeve 322 provides a supporting function and an assembling place for the inner taper sleeve 321, so that the inner taper sleeve 321 and the outer taper sleeve 322 are fixed together; the outer taper sleeve 322 protrudes downward from the inner taper sleeve 321; the gap 323 between the inner taper sleeve 321 and the outer taper sleeve 322 is arranged in a descending manner from top to bottom, i.e. the upper end of the gap 323 is large and the lower end of the gap 323 is small, preferably, the gap 323 is arranged in a descending manner from top to bottom, so that the gap 323 is gradually reduced from top to bottom; the gap 323 between the inner taper sleeve 321 and the outer taper sleeve 322 is also arranged with the upper end closed and the lower end open to prevent the shielding gas from flowing away from the upper end of the gap 323, the outer taper sleeve 322 is provided with an input channel 3221 communicated with the upper end of the gap 323 for being butted with an external shielding gas supply device to ensure that the external shielding gas supply device flows the shielding gas from the input channel 3221 into the upper end of the gap 323; therefore, with the aid of the protective gas nozzle 32, after the battery module 200 is clamped by the clamp 30 and the jacking mechanism 50, the lower end of the outer taper sleeve 322 presses the connecting piece 220, and the welding position of the connecting piece 220 and the pole 211 is surrounded by the lower end of the outer taper sleeve 322, as shown in fig. 11; and then, by virtue of the arrangement that the gap 323 between the inner taper sleeve 321 and the outer taper sleeve 322 is large at the top and small at the bottom, the protective gas flowing into the gap 323 from the input channel 3221 of the outer taper sleeve 322 fills the upper part of the gap 323 and flows to the lower part of the gap 323, so that the flowing time of the protective gas is prolonged, the using amount of the protective gas can be reduced, and the welding part between the connecting sheet 220 and the pole 211 is effectively prevented from being oxidized, thereby improving the welding quality. It is understood that the number of the shielding gas nozzles 32 may be other according to practical requirements, and is not limited to the illustration in the drawings.
As shown in fig. 1 and 2, the battery series-parallel laser welding apparatus of the present invention further includes a dust remover 80, the dust remover 80 being located beside the robot 40, such as, but not limited to, the rear side shown in fig. 1; the front side and the rear side of the clamp carrier plate 31 are respectively provided with a dust suction nozzle 327 communicated with the dust remover 80, all the protective gas diversion nozzles 32 are positioned between the dust suction nozzle 327 on the front side of the clamp carrier plate 31 and the dust suction nozzle 327 on the rear side of the clamp carrier plate 31, and an air suction opening 3271 of the dust suction nozzle 327 is positioned obliquely above the inner taper sleeve 321; for sucking away waste gas generated during the welding process by means of the cooperation of the dust suction nozzle 327 and the dust remover 80, so as to ensure the reliability of the welding. Specifically, in fig. 2, two dust suction nozzles 327 are respectively arranged at the front side of the clamp carrier plate 31 and 327 at the rear side of the clamp carrier plate 31, the dust remover 80 is connected with a main pipe body 93, the main pipe body 93 is divided into a left branch pipe 94 and a right branch pipe 95, a left middle valve 911 is arranged at the left corner of the rear side of the clamp carrier plate 31, a right middle valve 912 is arranged at the right corner of the rear side of the clamp carrier plate 31, a left tail valve 921 is arranged at the left corner of the front side of the clamp carrier plate 31, a right tail valve 922 is arranged at the right corner of the front side of the clamp carrier plate 31, the tail end of the left branch pipe 94 is assembled and connected with the input end of the left middle valve 911, the output end of the left middle valve 911 is assembled and connected with the left middle pipe 96 and the left tail pipe 98 at the rear side respectively, the left tail pipe 98 at the rear side is assembled and connected with the dust suction nozzle 327 at the rear side, the front end of the left middle pipe 96 is assembled and connected with the input end of the left tail pipe 921, the other end of the front left tail pipe 96 is assembled and connected with the dust suction head 327 on the front left side, the tail end of the right branch pipe 95 is assembled and connected with the input end of a right middle valve 912, the output end of the right middle valve 912 is assembled and connected with a right middle pipe 97 and a rear right tail pipe 99 respectively, the rear right tail pipe 99 is assembled and connected with the dust suction head 327 on the rear right side, the front end of the right middle pipe 97 is assembled and connected with the input end of a right tail valve 922, the output end of the right tail valve 922 is assembled and connected with one end of the front right tail pipe 99, the other end of the front right tail pipe 99 is assembled and connected with the dust suction head 327 on the front right side, so that the design achieves the purpose of reasonable and compact arrangement on one hand, on the other hand, each dust suction head 327 can work independently by means of the cooperation of the left middle valve 911, the right middle valve 912, the left tail valve 921 and the right tail valve 922, or a plurality of or all the dust suction heads 327 work simultaneously, this allows for greater flexibility in the operation of the dust extraction nozzle 327. More specifically, in fig. 6, the air suction ports 3271 are rectangular ports, and the length direction of the air suction ports 3271 is arranged along the length direction of the clamp carrier plate 31, so that the usage amount of the number of the dust suction nozzles 327 can be reduced, but not limited thereto.
As shown in fig. 9 and 10, the outer sidewall 3211 of the lower end of the inner taper sleeve 321 is provided with an outer chamfer structure 3212, the inner sidewall 3222 of the outer taper sleeve 322 is provided with a matching inner chamfer structure 3223 at a corresponding position, preferably, a gap (denoted by D1 in the enlarged view of fig. 9) between the position of the inner taper sleeve 321 adjacent to the outer chamfer structure 3212 and the position of the outer taper sleeve 322 adjacent to the inner chamfer structure 3223 is smaller than a gap (denoted by D1 in the enlarged view of fig. 9) between the outer chamfer structure 3212 and the inner chamfer structure 3223, so that the design has the advantages of: on one hand, the flowing direction of the protective gas is changed, on the other hand, the protective gas entering the upper end of the gap 323 flows from the upper end of the gap 323 with relatively large size to the lower end of the gap 323 with relatively small size, and then flows from the lower end of the gap 323 with small size to the tail end of the gap 323 with middle size, thereby effectively prolonging the flowing time of the protective gas and improving the utilization efficiency of the protective gas. Specifically, in fig. 9 to 11, an outer sidewall 3211 of the upper end of the inner cone sleeve 321 extends outward to form a supporting convex ring platform 3213, an annular cavity 3224 matching with the supporting convex ring platform 3213 is formed at the upper end of the outer cone sleeve 322, and the supporting convex ring platform 3213 is fittingly inserted into the annular cavity 3224, so that the inner cone sleeve 321 is fitted into the outer cone sleeve 322 by the matching of the supporting convex ring platform 3213 and the annular cavity 3224, and the upper end of the gap 323 is closed by the supporting convex ring platform 3213; preferably, the bearing bosses 3213 and the outer cone 322 are flush with each other above to facilitate the threaded connection 324 described below to secure the inner cone 321 to the outer cone 322 and thereby facilitate the assembly and disassembly of the inner cone 321 and the outer cone 322. More specifically, in fig. 9 to 10, the shielding gas nozzle 32 further includes a threaded connector 324 located beside the inner taper sleeve 321, the threaded connector 324 is threaded through the outer taper sleeve 322 along the up-down direction of the clamp carrier plate 31, that is, the threaded connector 324 is threaded through the outer taper sleeve 322 and is in threaded connection with the outer taper sleeve 322, so that the threaded connector 324 can be assembled on the outer taper sleeve 322 or disassembled from the outer taper sleeve 322 by screwing the threaded connector 324; the threaded connection 324 further presses the supporting collar segment 3213 from above, so that the supporting collar segment 3213 is clamped between the threaded connection 324 and the outer cone sleeve 322, thereby achieving the purpose of fixing the inner cone sleeve 321 to the outer cone sleeve 322. For example, the threaded connectors 324 are screws respectively disposed around the inner taper sleeve 321 to improve the fixing reliability between the inner taper sleeve 321 and the outer taper sleeve 322, but not limited thereto.
As shown in fig. 9 to 11, in order to provide the contact between the lower end of the outer cone 322 and the connecting piece 220 with buffering elasticity, the shielding gas nozzle 32 further includes a connection stopper 325 and an elastic member 326, each of which is located beside the inner cone 321. The connection limiting member 325 penetrates through the outer taper sleeve 322 and the fixture support plate 31 along the up-down direction of the fixture support plate 31, so that the connection limiting member 325 and the fixture support plate 31 are relatively static, and the outer taper sleeve 322 can slide on the connection limiting member 325 along the up-down direction of the fixture support plate 31 for limiting; the elastic member 326 is located above the outer taper sleeve 322 and sleeved on the connection limiting member 325, and the elastic member 326 always has a tendency to drive the outer taper sleeve 322 and the inner taper sleeve 321 to slide to a position where the outer taper sleeve 322 abuts against the clamp carrier plate 31, as shown in fig. 6. Specifically, the connection limiting members 325 are respectively arranged around the inner taper sleeve 321, and each connection limiting member 325 corresponds to one elastic member 326, so as to ensure that the four corners of the outer taper sleeve 322 are subjected to the same elastic force, thereby ensuring that the buffer expansion between the outer taper sleeve 322 and the clamp carrier plate 31 is more reliable. For example, the elastic element 326 is a compression spring, the limit connector 325 is a screw, and a threaded end of the screw is threadedly connected with the clamp carrier 31, but not limited thereto.
As shown in fig. 2 to 5, the pallet conveyor line 20 is a belt conveyor line, and the pallet conveyor line 20 extends horizontally in the front-rear direction of the rack 10, but not limited thereto.
Compared with the prior art, the tray conveyor line 20 is assembled on the rack 10, the tray 300 and the battery module 200 supported by the tray 300 are horizontally conveyed, the jacking mechanism 50 is assembled on the rack 10 and located right below the tray conveyor line 20, the clamp 30 is assembled on the rack 10 and located right above the tray conveyor line 20, and the clamp 30 is aligned with the jacking mechanism 50 along the vertical direction of the rack 10; when the tray 300 transferred to the tray conveyor line 20 from the previous process is conveyed to the position aligned with the jacking mechanism 50 by the tray conveyor line 20, at this time, the tray 300 conveyed by the tray conveyor line 20 and the battery module 200 carried by the tray 300 are jacked upwards by the jacking mechanism 50, so that the clamp 30 is abutted against the connecting piece 220 in the battery module 200, that is, the connecting piece 220 is clamped by the clamp 30 and the jacking mechanism 50, specifically, clamped by the jacking plate 51 of the jacking mechanism 50 and the lower end part of the outer taper sleeve 322, so that the connecting piece 220 and the pole 211 of the battery 210 are surrounded by the lower end part of the outer taper sleeve 322, and the state is shown in fig. 11; then, the pole 211 is automatically welded to the connecting piece 220 pressed by the jig 30 by the laser welding head 60 in cooperation with the robot 40; after the welding is completed, the tray 300 is placed on the tray conveyor line 20 by the jacking mechanism 50, the tray 300 carrying the welded battery module 200 and the tray 300 carrying the battery module 200 to be welded are continuously and forwardly conveyed by the tray conveyor line 20, so that the tray 300 carrying the battery module 200 to be welded is conveyed to the position right below the fixture 30 to prepare for welding of the next battery module 200, and the welding efficiency is greatly improved.
The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.
Claims (10)
1. A battery series-parallel laser welding device is suitable for welding a connecting sheet at a pole post part between adjacent batteries in a battery module with the pole post, and is characterized by comprising a rack, a tray conveying line, a clamp, a robot, a jacking mechanism and a laser welding head, wherein the tray conveying line is assembled on the rack and horizontally conveys a tray and the battery module supported by the tray, the jacking mechanism is assembled on the rack and positioned under the tray conveying line, the clamp is assembled on the rack and positioned over the tray conveying line, the clamp is aligned with the jacking mechanism along the vertical direction of the rack, the jacking mechanism jacks up the tray conveyed by the tray conveying line together with the battery module supported by the tray so as to enable the clamp to be abutted against the connecting sheet in the battery module, the robot is located beside the rack, the laser welding head is assembled at the tail joint of the robot, and the laser welding head is used for welding the pole with the connecting sheet pressed by the clamp under the cooperation of the robot.
2. The battery series-parallel laser welding apparatus according to claim 1, further comprising a CCD photographing device which is mounted to a distal joint of the robot and located beside the laser welding head.
3. The battery series-parallel laser welding equipment according to claim 1, wherein the jig comprises a jig support plate and a plurality of shielding gas flow nozzles penetrating through the jig support plate in the vertical direction of the rack and arranged in an array, the shielding gas flow nozzles comprise inner taper sleeves and outer taper sleeves, the inner taper sleeves and the outer taper sleeves are respectively large in top and small in bottom, the jig support plate is assembled with the rack, the outer taper sleeves are assembled on the jig support plate, the inner taper sleeves are sleeved in the outer taper sleeves from top to bottom, the outer taper sleeves protrude downwards from the inner taper sleeves, gaps between the inner taper sleeves and the outer taper sleeves are arranged in a descending manner from top to bottom, the gaps between the inner taper sleeves and the outer taper sleeves are arranged in a manner that the upper ends are closed and the lower ends are open, the outer taper sleeves are provided with input channels communicated with the upper ends of the gaps, and the jacking mechanism enables the tray conveyed by the tray to be conveyed together with the battery modules borne by the tray towards the same direction And the lower end part of the outer taper sleeve is abutted against the connecting sheet by jacking up.
4. The battery series-parallel laser welding device according to claim 3, wherein an outer chamfer structure is formed on the outer side wall of the lower end of the inner taper sleeve, and a matched inner chamfer structure is formed on the corresponding position of the inner side wall of the outer taper sleeve.
5. The battery series-parallel laser welding apparatus of claim 4, wherein a gap between a location of the inner taper sleeve adjacent the outer chamfer structure and a location of the outer taper sleeve adjacent the inner chamfer structure is less than a gap between the outer chamfer structure and the inner chamfer structure.
6. The battery series-parallel laser welding equipment according to claim 3, wherein a supporting convex ring platform extends outwards from the outer side wall of the upper end of the inner taper sleeve, an annular cavity matched with the supporting convex ring platform is formed in the upper end of the outer taper sleeve, and the supporting convex ring platform is embedded into the annular cavity in a matched mode.
7. The battery series-parallel laser welding equipment according to claim 6, wherein the shielding gas flow guide nozzle further comprises a threaded connector located beside the inner taper sleeve, the threaded connector is threaded in the outer taper sleeve along the up-down direction of the clamp support plate and presses the bearing convex ring table from above.
8. The battery series-parallel laser welding equipment according to claim 3, wherein the shielding gas flow guide nozzle further comprises a connection limiting part and an elastic part which are respectively located beside the inner taper sleeve, the connection limiting part penetrates through the outer taper sleeve and the fixture support plate along the up-down direction of the fixture support plate, the outer taper sleeve can slide on the connection limiting part along the up-down direction of the fixture support plate in a limiting manner, the elastic part is located above the outer taper sleeve and sleeved on the connection limiting part, and the elastic part constantly has a tendency of driving the outer taper sleeve and the inner taper sleeve to slide together to a position where the outer taper sleeve is abutted against the fixture support plate.
9. The battery series-parallel laser welding equipment according to claim 3, further comprising a dust remover, wherein the dust remover is located beside the robot, dust suction heads communicated with the dust remover are respectively installed on the front side and the rear side of the fixture support plate, all the shielding gas diversion nozzles are located between the dust suction head on the front side of the fixture support plate and the dust suction head on the rear side of the fixture support plate, and an air suction opening of each dust suction head is located obliquely above the inner taper sleeve.
10. The battery series-parallel laser welding equipment of claim 1, wherein the jacking mechanism comprises a jacking plate, a jacking driver and a guide assembly, the jacking plate is provided with positioning columns, the positioning columns are arranged on the jacking plate in a diagonal or matrix manner, the jacking driver is installed on the rack and located below the jacking plate, the output end of the jacking driver is in assembly connection with the jacking plate, and the guide assembly is assembled on both the jacking plate and the rack.
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