CN114227042A - Welding machine and method for welding battery soft copper bars - Google Patents
Welding machine and method for welding battery soft copper bars Download PDFInfo
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- CN114227042A CN114227042A CN202111579964.2A CN202111579964A CN114227042A CN 114227042 A CN114227042 A CN 114227042A CN 202111579964 A CN202111579964 A CN 202111579964A CN 114227042 A CN114227042 A CN 114227042A
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- clamp
- copper
- welding
- driving motor
- tin sheet
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 134
- 239000010949 copper Substances 0.000 title claims abstract description 134
- 238000003466 welding Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 21
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 109
- 238000003860 storage Methods 0.000 claims abstract description 52
- 239000000498 cooling water Substances 0.000 claims abstract description 30
- 238000003825 pressing Methods 0.000 claims description 48
- 238000003475 lamination Methods 0.000 claims description 43
- 238000009413 insulation Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000002826 coolant Substances 0.000 abstract description 4
- 238000012797 qualification Methods 0.000 abstract description 3
- 229910000679 solder Inorganic materials 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 239000005028 tinplate Substances 0.000 description 8
- 239000011889 copper foil Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/003—Cooling means
-
- 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
Abstract
The invention relates to the field of battery copper bar flexible connection production lines, and discloses a welding machine and a method for welding battery copper bars, wherein the welding machine comprises a welding machine, and a cooling water tank is arranged on the edge of the welding machine; the equipment objective table and pusher are installed to coolant tank's upper end, are equipped with the window on the coolant tank, and the window is established between equipment objective table and pusher, is equipped with first recess on the equipment objective table, and the bottom surface of first recess is equipped with the second recess, installs first tin piece storage box, copper sheet storage box and the second tin piece storage box of establishing directly over first recess in proper order on the equipment objective table. The welding machine can automatically stack the copper bar to be welded to carry out automatic welding, and after welding, the pusher can take the copper bar that the welding is good to place automatically and cool in the cooling water tank. The automatic copper bar that stacks can reduce the cost of labor, reduces artifical fault rate, and it is high to improve the regularity that the copper bar stacks, and copper bar welded qualification rate is higher.
Description
Technical Field
The invention relates to the field of battery copper bar flexible connection production lines, in particular to a welding machine and a method for welding battery copper bars.
Background
With the exhaustion of global petroleum resources and the continuous aggravation of environmental pollution, all countries in the world are strongly supporting the development of new energy automobiles. The rapid development of the new energy automobile industry drives the demand for accessories related to the new energy automobile industry to increase. The power battery is a core component of the electric automobile, and the plurality of batteries are connected in series or in parallel by the soft copper bars to form a battery module. The soft copper busbar can adapt to complicated spatial arrangement, and has strong flexibility and convenient installation.
The macromolecule diffusion welding process is an important ring in the production process of the soft copper bar, the molecule diffusion welding process is a special welding process, the macromolecule diffusion welding machine is a welding device which is used for tightly attaching a welding piece for a period of time at a certain temperature and under a certain pressure so that atoms between contact surfaces are diffused mutually to form connection, copper foils with different strengths can be welded together in a specific area, and the copper foil flexible connection welding process does not need to use scaling powder in any form. Thanks to this perfect molecular connectivity, the moleculardiffusion-bonded copper foil flexible joint is an excellent electrical conductor, and the mounting contact surface can withstand any form of compression, bending or impact.
The polymer diffusion welding process can be divided into three stages:
the first stage, the physical contact stage. Under the action of external pressure, the microscopically uneven surface is subjected to plastic deformation at some points through yield and creep mechanisms, the contact area is gradually enlarged under the action of continuous pressure, and finally the whole surface is reliably contacted, and the contact part is basically the connection between crystal grains.
In the second stage, the atoms in the contact interface are diffused and permeated to form a firm bonding layer. In this stage, many voids disappear due to the continuous diffusion of atoms at the grain boundary, and an equilibrium state is reached.
And in the third stage, the bonding layer formed at the contact part gradually develops towards the volume direction, and the remained gap completely disappears to finally form reliable connection. These three processes are performed crosswise to each other.
Compared with other welding methods, the diffusion welding has the advantages that the technological parameters are easy to control, the connection of internal and multi-point large-area components can be carried out, the welded workpiece basically does not deform, and the like.
At present, the polymer diffusion welding process in the production of soft copper bars mainly adopts manual work and a semi-automatic production mode, a plurality of workers are required to operate simultaneously during processing, copper foils are stacked, surface tin foils are stacked, the process of feeding and clamping the polymer diffusion welding machine and placing cooling liquid after the welding process is completed needs to be completed by people, the production efficiency is low, the operation precision is low, and meanwhile, certain potential safety hazards exist in a manual operation machine. For example, a special jig for soldering a soft copper bar and a silver contact is disclosed in application No. 202022067239.4.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a welding machine and a method for welding a battery soft copper bar.
In order to solve the technical problem, the invention is solved by the following technical scheme:
the welding machine for welding the battery soft copper bar comprises a welding machine, wherein a cooling water tank is arranged on the side of the welding machine; the assembly objective table and the pusher are installed to coolant tank's upper end, the last window that is equipped with of coolant tank, the window is established between assembly objective table and pusher, be equipped with the first recess that extends to the other end from its one end on the assembly objective table, the bottom surface of first recess is equipped with the second recess the same rather than extension length, install the first tin piece storage box of establishing directly over first recess on the assembly objective table in proper order, copper sheet storage box and second tin piece storage box, pusher includes driving motor, lead screw and anchor clamps, the one end of lead screw is passed through the bearing and is connected with anchor clamps, driving motor and screw connection promote anchor clamps and remove on the assembly objective table, the material on the first recess is got and with the material propelling movement to the welding machine to anchor clamps through the second recess clamp.
The copper lamination is placed in the copper sheet storage box, and the copper lamination is folded by multilayer copper foil and is tentatively in the same place through the suppression, can not scatter when realizing dropping. Two tin sheets are required to be placed on two sides of the copper lamination respectively, so that tinning of the copper bar is realized. The tinning of copper bar is the effect of preventing the oxidation, increases area of contact, reduces the contact resistance of faying face, reinforcing electric conductivity. The tin coating has better stability in the air, the two different metal materials achieve permanent atom-crystal bonding at various environmental temperatures, and the copper layer is uniformly distributed with tin and zinc layers.
The welding machine can automatically stack the copper bar to be welded to carry out automatic welding, and after welding, the pusher can take the copper bar that the welding is good to place automatically and cool in the cooling water tank. The automatic copper bar that stacks can reduce the cost of labor, reduces artifical fault rate, and it is high to improve the regularity that the copper bar stacks, and copper bar welded qualification rate is higher.
Preferably, a first flow guide cover is arranged at the lower end of the first tin sheet storage box and is arranged right above the first groove; a third air guide sleeve is arranged at the lower end of the copper sheet storage box and is arranged right above the first groove; the second air guide sleeve is installed at the lower end of the second tin sheet storage box, and the third air guide sleeve is arranged right above the first groove. First kuppe, second kuppe and third kuppe play the guide effect, and tin piece, copper lamination can fall under first recess, avoid tin piece, copper lamination to take place the skew when the whereabouts, improve the regularity that the copper bar stacked.
Preferably, the cross sections of the first groove and the second groove are in an inverted convex shape, the clamp comprises a first air cylinder, an upper clamping block and a lower clamping block, the lower clamping block is fixedly connected with the first air cylinder, a telescopic rod of the first air cylinder is connected with the upper clamping block, when the clamp is clamped, the lower clamping block extends into the second groove, and the upper end face of the lower clamping block is lower than the bottom face of the first groove. The second recess facilitates the fixture to extend into the bottom surface of the bottom tin plate to push the bottom tin plate and the copper laminations and top tin plate thereon to move forward.
Preferably, the cooling water tank is convexly formed at the middle to form a convex portion, and the window is provided at the convex portion. The bulge plays a guiding role, and meanwhile, the water splash of the copper bar is prevented from splashing outside when the copper bar falls on the cooling water tank.
Preferably, the welding machine comprises a rack, an upper pressing piece and a lower pressing piece, the lower pressing piece is fixed on the rack, the end face of the top end of the lower pressing piece is lower than the bottom face of the second groove, a second cylinder is installed at the top end of the rack, and the rod end of a piston rod of the second cylinder is fixedly connected with the upper pressing piece.
Preferably, the upper pressing piece sequentially comprises an upper guide pillar fixing plate, an upper conductive connecting plate, an upper heat insulation plate and an upper pressing head from top to bottom, the upper guide pillar fixing plate, the upper conductive connecting plate, the upper heat insulation plate and the upper pressing head are sequentially connected, and the upper guide pillar fixing plate is connected with a piston rod of the second cylinder; the lower guide pillar fixing plate, the lower conductive connecting plate, the lower heat insulation plate and the lower pressing head are sequentially connected, and the lower guide pillar fixing plate is fixed on the rack.
A method for welding battery soft copper bars comprises a welding machine and specifically comprises the following steps:
a, a PLC controller sends pulses to a driving motor, the driving motor drives a screw rod and a clamp to move towards an assembly objective table, when the clamp is about to enter the position right below a first air guide sleeve, the PLC sends a specified number of pulses to finish, and the driving motor stops when reaching a set rotation angle;
b, opening the bottom of the first tin sheet storage box, and releasing a tin sheet to the first groove, wherein the tin sheet is a bottom tin sheet;
c, starting a driving motor, driving the clamp to move forwards by the driving motor, enabling the bottom tin sheet to enter a clamping opening between the lower clamping block and the upper clamping block, pushing the bottom tin sheet to move in the first groove and move to a position right below the third air guide sleeve by the clamp, starting the driving motor reversely, driving the clamp to exit an area right below the third air guide sleeve, and stopping when the driving motor reaches a set rotation angle;
d, opening the bottom of the copper sheet storage box, discharging a copper lamination, stacking the copper lamination right above a bottom tin sheet, starting a driving motor and driving a clamp to move forwards, enabling the bottom tin sheet and the copper lamination to enter a clamping opening between a lower clamping block and an upper clamping block, driving the bottom tin sheet and the copper lamination to move a region right below a second air guide sleeve by the clamp, starting the driving motor reversely and driving the clamp to exit the region right below the second air guide sleeve, and stopping the driving motor when the driving motor reaches a set rotation angle;
e, opening the bottom of the second tin sheet storage box, discharging a tin sheet to be stacked right above the copper lamination, wherein the tin sheet is a top tin sheet, driving the fixture to move forwards by forward starting of the driving motor, the bottom tin sheet, the copper lamination and the top tin sheet all enter a clamping opening between the lower clamping block and the upper clamping block, and the first air cylinder is started to drive the upper clamping block to press the lower clamping block to clamp the bottom tin sheet, the copper lamination and the top tin sheet on the fixture;
f, driving the clamp to move to the lower pressing head by the driving motor and discharging the stacked copper on the lower pressing head, starting the welding machine, electrifying the upper conductive connecting plate and the lower conductive connecting plate, and pressing the bottom tin sheet, the copper lamination and the top tin sheet by the upper pressing head driven by the second air cylinder when the temperatures of the upper pressing head and the lower pressing head reach set values;
and g, after welding is completed, the driving motor is started reversely to drive the pressed copper bar to move right above the window of the cooling water tank, the first cylinder of the clamp is started, the copper bar falls into the cooling water tank through the window for cooling, and the clamp resets.
Preferably, when the driving motor is connected with the lead screw through the elastic coupling, the transmission ratio is 1, and the lead is calculated as follows:
in the formula
PB is lead of ball screw, mm;
v max-maximum feed speed, m/s;
NR is the rated rotating speed of the motor, r/min;
i is the reduction ratio of the reducer of the motor.
Due to the adoption of the technical scheme, the invention has the remarkable technical effects that:
the copper lamination is placed in the copper sheet storage box, and the copper lamination is folded by multilayer copper foil and is tentatively in the same place through the suppression, can not scatter when realizing dropping. Two tin sheets are required to be placed on two sides of the copper lamination respectively, so that tinning of the copper bar is realized. The tinning of copper bar is the effect of preventing the oxidation, increases area of contact, reduces the contact resistance of faying face, reinforcing electric conductivity. The tin coating has better stability in the air, the two different metal materials achieve permanent atom-crystal bonding at various environmental temperatures, and the copper layer is uniformly distributed with tin and zinc layers.
The welding machine can automatically stack the copper bar to be welded to carry out automatic welding, and after welding, the pusher can take the copper bar that the welding is good to place automatically and cool in the cooling water tank. The automatic copper bar that stacks can reduce the cost of labor, reduces artifical fault rate, and it is high to improve the regularity that the copper bar stacks, and copper bar welded qualification rate is higher.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a partially enlarged view of a.
Fig. 3 is a partial enlarged view of B.
FIG. 4 is a schematic view of a welder.
The names of the parts indicated by the numerical references in the above figures are as follows:
10-welding machine, 101-frame, 102-upper casting die, 103-lower casting die, 104-second cylinder, 1021-upper guide post fixing plate, 1022-upper conductive connecting plate, 1023-upper heat insulation plate, 1024-upper pressure head, 1031-lower guide post fixing plate, 1032-lower conductive connecting plate, 1033-lower heat insulation plate, 1034-lower pressure head
11-cooling water tank, 111-window, 112-projection
12-Assembly stage, 121-first recess, 122-second recess
13-pushing device, 131-driving motor, 132-lead screw, 133-clamp, 1331-first cylinder, 1332-upper clamping block and 1333-lower clamping block
14-first tin sheet storage box
15-copper sheet storage box
16-second tin sheet storage box
17-first pod
18-second air guide sleeve
19-a third pod.
Detailed Description
The invention will be described in further detail below with reference to the accompanying figures 1-4 and examples.
Example 1
A welding machine for welding battery soft copper bar, including welding machine 10, cooling water tank 11 is installed to the edge of welding machine 10, and cooling water tank 11 can cool off for the welded copper bar. An assembly objective table 12 and a pushing device 13 are installed at the upper end of the cooling water tank 11, a window 111 is arranged on the cooling water tank 11, the window 111 is arranged between the assembly objective table 12 and the pushing device 13, and the pushing device 13 can take welded copper bars to be placed into the window 111 of the cooling water tank 11. Be equipped with the first recess 121 that extends to the other end from its one end on the equipment objective table 12, the bottom surface of first recess 121 is equipped with the second recess 122 the same rather than extension length, install in proper order on the equipment objective table 12 and establish the first tin piece storage box 14 directly over first recess 121, copper sheet storage box 15 and second tin piece storage box 16, tin piece is stored to first tin piece storage box 14, when opening first tin piece storage box 14 at every turn, first tin piece storage box 14 can fall out a slice tin piece and arrive in first recess 121. The copper sheet storage box 15 is used for storing copper lamination, and when the copper sheet storage box 15 is opened each time, the copper sheet storage box 15 can fall out of the copper bars with a set number of sheets, and all copper sheets are overlapped together to form the copper lamination. The second tin plate storage box 16 stores tin plates, and when the second tin plate storage box 16 is opened at every time, the second tin plate storage box 16 can fall out one tin plate to the first groove 121. The pushing device 13 includes a driving motor 131, a lead screw 132 and a clamp 133, the lead screw 132 is a ball screw, one end of the lead screw 132 is connected to the clamp 133 through a bearing, the driving motor 131 is connected to the lead screw 132 and pushes the clamp 133 to move onto the assembly stage 12, and the clamp 133 clamps the material on the first groove 121 through the second groove 122 and pushes the material onto the welding machine 10. When the bottom tin piece falls into in first recess 121, anchor clamps 133 can push away the bottom tin piece and enter into under copper sheet storage box 15, when the copper lamination of copper sheet storage box 15 falls on bottom tin piece top, pusher 13 can push away the bottom tin piece and move forward once more and remove under second tin piece storage box 16, second tin piece storage box 16 opens back top tin piece and falls on the copper lamination, the copper lamination is folded into by multilayer copper foil and is tentatively put together through the suppression, can not scatter when realizing dropping. Two tin sheets are required to be placed on two sides of the copper lamination respectively, so that tinning of the copper bar is realized. The tinning of copper bar is the effect of preventing the oxidation, increases area of contact, reduces the contact resistance of faying face, reinforcing electric conductivity. The tin coating has better stability in the air, the two different metal materials achieve permanent atom-crystal bonding at various environmental temperatures, and the copper layer is uniformly distributed with tin and zinc layers. The copper bars are stacked, and the stacked copper bars are pushed by the pushing device 13 to the welding machine 10 for welding.
The first air guide sleeve 17 is arranged at the lower end of the first tin sheet storage box 14, and the first air guide sleeve 17 is arranged right above the first groove 121; the lower end of the copper sheet storage box 15 is provided with a third dome 19, and the third dome 19 is arranged right above the first groove 121; the second air guide sleeve 18 is installed at the lower end of the second tin sheet storage box 16, and the third air guide sleeve 19 is arranged right above the first groove 121. The first pod 17, the second pod 18 and the third pod 19 all guide the tin or copper stack that falls off in a manner that is offset.
The cross sections of the first groove 121 and the second groove 122 are inverted 'convex', the clamp 133 comprises a first cylinder 1331, an upper clamping block 1332 and a lower clamping block 1333, the lower clamping block 1333 is fixedly connected with the first cylinder 1331, the telescopic rod of the first cylinder 1331 is connected with the upper clamping block 1332, when the clamp 133 is clamped, the lower clamping block 1333 extends into the second groove 122, the upper end surface of the lower clamping block 1333 is lower than the bottom surface of the first groove 121, so that the lower clamping block 1333 can extend into the bottom surface of the bottom tin sheet, the bottom tin sheet can enter the clamp 133, and when the clamp 133 moves forwards, the bottom tin sheet can be pushed by the clamp and moves along the first groove 121.
The welding machine 10 comprises a machine frame 101, an upper pressing piece 102 and a lower pressing piece 103, wherein the lower pressing piece 103 is fixed on the machine frame 101, the end face of the top end of the lower pressing piece 103 is lower than the bottom surface of the second groove 122, a second air cylinder 104 is installed at the top end of the machine frame 101, and the rod end of a piston rod of the second air cylinder 104 is fixedly connected with the upper pressing piece 102.
The upper pressing part 102 sequentially comprises an upper guide pillar fixing plate 1021, an upper conductive connecting plate 1022, an upper heat insulation plate 1023 and an upper pressing head 1024 from top to bottom, the upper guide pillar fixing plate 1021, the upper conductive connecting plate 1022, the upper heat insulation plate 1023 and the upper pressing head 1024 are sequentially connected, and the upper guide pillar fixing plate 1021 is connected with a piston rod of the second cylinder 104; the lower pressing member 103 sequentially includes a lower guide pillar fixing plate 1031, a lower conductive connecting plate 1032, a lower heat insulating plate 1033 and a lower pressing head 1034 from bottom to top, the lower guide pillar fixing plate 1031, the lower conductive connecting plate 1032, the lower heat insulating plate 1033 and the lower pressing head 1034 are sequentially connected, and the lower guide pillar fixing plate 1031 is fixed on the rack 101.
The working principle is as follows: when the assembly loading platform starts to work, the PLC sends pulses to the driving motor 131, the lead screw 132 is driven to move forward, the lead screw 132 pushes the clamp 133 to move forward, when the assembly loading platform is about to enter the position under the bottom tin sheet air guide sleeve 18, the PLC sends a specified number of pulses to complete, the driving motor 131 stops when reaching a set rotation angle, the bottom of the first tin sheet storage box 14 is opened, a tin sheet is discharged, and the tin sheet falls into the first groove 121 of the assembly loading platform along the first air guide sleeve 17 at the bottom. After the tin sheet falls into the first groove 121, the PLC sends a specified number of pulses to the driving motor 131, the driving motor 131 drives, and the fixture 133 pushes the tin sheet to move forward.
Similarly, when the solder paste is about to enter the position right below the third pod 19, the driving motor 131 reaches a set rotation angle and stops, the bottom of the copper lamination storage box 15 is opened, one copper lamination is discharged, and the copper lamination falls right above the solder paste which is suddenly dropped in the previous step along the third pod 19. The drive motor 131 is driven and the gripper 133 pushes the tin plate forward.
When the solder is about to enter the position right below the second solder storage box 16, the driving motor 131 reaches a set rotation angle and stops, the bottom of the second solder storage box 16 is opened, a solder sheet is released, and the solder sheet falls right above the copper lamination which is dropped in the previous step along the second dome 18, so that the state of the solder sheet-copper lamination-solder sheet is formed. The first cylinder 1311 is operated and the lower clamp block 1332 clamps the lower clamp block 1333, thereby clamping the tin sheet-copper laminate-tin sheet together. Then the motor 131 is driven to rotate by a set angle, the fixture 133 pushes the solder sheet to move forward, and the fixture 133 moves to the lower part of the welder 10 to stop, at which time the welder 10 can just weld without pressing the fixture 133.
After entering the welding stage, the upper conductive connecting plate 1022 and the lower conductive connecting plate 1032 are connected with electricity through electric wires, and form a short circuit with the upper pressure head 1024 through the upper heat insulation plate 1023 respectively, and the lower heat insulation plate 1033 forms a short circuit with the lower pressure head 1034, so that the upper pressure head 1024 and the lower pressure head 1034 are heated up rapidly, the second cylinder 104 controls the upper guide pillar fixing plate 1021 through a cylinder piston rod to drive the whole upper pressure head 1024 to be pressed downwards, the force and the temperature of the pressing are adjusted through a man-machine box, and after a preset value is completed, the upper pressure head 1024 and the lower pressure head 1034 are welded with a copper bar, so that high polymer diffusion welding is realized.
After the welding is completed, the driving motor 131 rotates in the reverse direction, the clamp 133 withdraws with the machined workpiece being clamped, and when the clamp is withdrawn to a position right above the window 111 of the cooling water tank 11, the clamp 133 is released, and the workpiece falls into the cooling water tank 11 to be cooled. After the operation is completed, the jig 133 is reset to the rightmost side of the assembly stage 19, and is ready to enter the next operation.
Example 2
Embodiment 2 is basically the same as embodiment 1 in characteristics, except that the middle of the cooling water tank 11 protrudes to form a protruding portion 112, the protruding portion 112 is integrally formed on the cooling water tank 11, the window 111 is arranged at the protruding portion 112, the protruding portion 112 is used for connecting a welded copper bar, the copper bar can accurately fall into the cooling water tank 11, and on the other hand, the copper bar falls into the cooling water tank 11 and does not splash cooling water to the outside.
Example 3
A method for welding battery soft copper bars comprises the welding machine in embodiment 1 or embodiment 2, and specifically comprises the following steps:
a, the PLC sends pulses to the driving motor 131, the driving motor 131 drives the screw 132 and the clamp 133 to move towards the assembly objective table 12, when the clamp is about to enter the position right below the first air guide sleeve 17, the PLC sends a specified number of pulses to finish, and the driving motor 131 reaches a set rotation angle and stops;
b, opening the bottom of the first tin sheet storage box 14, and releasing a tin sheet to the first groove 121, wherein the tin sheet is a bottom tin sheet;
c, starting the driving motor 131, driving the fixture 133 to move forward by the driving motor 131, enabling the bottom tin sheet to enter a clamping opening between the lower clamping block 1333 and the upper clamping block 1332, pushing the bottom tin sheet to move in the first groove 121 by the fixture 133 and move to a position right below the third air guide sleeve 19, starting the driving motor 131 reversely and driving the fixture 133 to exit a position right below the third air guide sleeve 19, and stopping when the driving motor 131 reaches a set rotation angle;
d, opening the bottom of the copper sheet storage box 15, discharging a copper lamination, stacking the copper lamination right above a bottom tin sheet, starting the driving motor 131 and driving the clamp 133 to move forwards, enabling the bottom tin sheet and the copper lamination to enter a clamping opening between the lower clamping block 1333 and the upper clamping block 1332, driving the bottom tin sheet and the copper lamination by the clamp 133 to move a region right below the second air guide sleeve 18, starting the driving motor 131 in a reverse direction, driving the clamp 133 to exit the region right below the second air guide sleeve 18, and stopping when the driving motor 131 reaches a set rotation angle;
e, the bottom of the second tin sheet storage box 16 is opened, a tin sheet is discharged and stacked right above the copper lamination, the tin sheet is a top tin sheet, the driving motor 131 is started forward to drive the clamp 133 to move forward, the bottom tin sheet, the copper lamination and the top tin sheet all enter a clamping opening between the lower clamping block 1333 and the upper clamping block 1332, and the first air cylinder is started to drive the upper clamping block 1332 to press the lower clamping block 1333 to clamp the bottom tin sheet, the copper lamination and the top tin sheet on the clamp 133;
f, the driving motor 131 drives the clamp 133 to move to the lower pressing head 1034 and discharge the stacked copper thereon, the welding machine 10 is started, the upper conductive connecting plate 1022 and the lower conductive connecting plate are electrified, and when the temperatures of the upper pressing head 1024 and the lower pressing head 1034 reach set values, the second air cylinder 104 drives the upper pressing head 1024 to press the bottom tin sheet, the copper lamination sheet and the top tin sheet;
g, after welding, the driving motor 131 is started reversely to drive the pressed copper bar to move right above the window of the cooling water tank 11, the first cylinder 1331 of the clamp 133 is started, the copper bar falls into the cooling water tank 11 through the window 111 to be cooled, and the clamp 133 resets.
When the driving motor 131 is connected with the lead screw 132 through the elastic coupling, the transmission ratio is 1, and the lead calculation method is as follows:
in the formula
PB is lead of ball screw, mm;
v max-maximum feed speed, m/s;
NR is the rated rotating speed of the motor, r/min;
i is the reduction ratio of the reducer of the motor.
According to the working distance and the working precision of the screw 132, the highest speed of the linear motion mechanism is set to be 0.05m/s, the rated rotating speed of the driving motor 131 is set to be 1000r/min, and the formula is substituted to obtain:
therefore, a screw with single thread and a thread pitch of 1mm is adopted.
For example, the fixture 133 reaches 16mm from the initial position to a position immediately below the bottom first pod 17 by the first distance,
in the formula
n-number of revolutions of servo motor
L-advancing distance of ball screw
The driving motor 131 rotates one circle, the lead screw 132 advances 1mm, so the PLC is used for setting the number of the first step rotation circles of the driving motor 131 to be 16 circles, the required precision reaches 0.01mm, the driving motor 131 needs to rotate 0.01 circle every time the driving motor moves 0.01mm, the selected motor pulse number is 100, namely when the PLC controls the motor, 100 pulses are sent, the driving motor 131 rotates one circle, the number of the first step rotation circles of the driving motor 131 is 16 circles, and the PLC program controls the pulse number to be 1600.
Claims (8)
1. The welding machine for welding the battery soft copper bar comprises a welding machine (10), wherein a cooling water tank (11) is arranged on the side of the welding machine (10); the method is characterized in that: an assembly objective table (12) and a pushing device (13) are mounted at the upper end of a cooling water tank (11), a window (111) is arranged on the cooling water tank (11), the window (111) is arranged between the assembly objective table (12) and the pushing device (13), a first groove (121) extending from one end to the other end of the assembly objective table (12) is arranged on the assembly objective table, a second groove (122) with the same extension length as the first groove is arranged on the bottom surface of the first groove (121), a first tin sheet storage box (14), a copper sheet storage box (15) and a second tin sheet storage box (16) which are arranged right above the first groove (121) are sequentially mounted on the assembly objective table (12), the pushing device (13) comprises a driving motor (131), a lead screw (132) and a clamp (133), one end of the lead screw (132) is connected with the clamp (133) through a bearing, the driving motor (131) is connected with the lead screw (132) and pushes the clamp (133) to move to the assembly objective table (12), the clamp (133) clamps the materials on the first groove (121) through the second groove (122) and pushes the materials to the welding machine (10).
2. The welding machine for welding the battery soft copper bars as claimed in claim 1, characterized in that: a first air guide sleeve (17) is arranged at the lower end of the first tin sheet storage box (14), and the first air guide sleeve (17) is arranged right above the first groove (121); a third air guide sleeve (19) is arranged at the lower end of the copper sheet storage box (15), and the third air guide sleeve (19) is arranged right above the first groove (121); the lower end of the second tin sheet storage box (16) is provided with a second air guide sleeve (18), and a third air guide sleeve (19) is arranged right above the first groove (121).
3. The welding machine for welding the battery soft copper bars as claimed in claim 2, characterized in that: the cross sections of the first groove (121) and the second groove (122) are in an inverted convex shape, the clamp (133) comprises a first air cylinder (1331), an upper clamping block (1332) and a lower clamping block (1333), the lower clamping block (1333) is fixedly connected with the first air cylinder (1331), an expansion rod of the first air cylinder (1331) is connected with the upper clamping block (1332), when the clamp (133) is clamped, the lower clamping block (1333) extends into the second groove (122), and the upper end face of the lower clamping block (1333) is lower than the bottom face of the first groove (121).
4. The welding machine for welding the battery soft copper bars as claimed in claim 1, characterized in that: a bulge part (112) is formed in the middle of the cooling water tank (11), and a window (111) is arranged at the bulge part (112).
5. The welding machine for welding the copper busbar on the battery according to any one of claims 3 or 4, wherein: the welding machine (10) comprises a rack (101), an upper pressing piece (102) and a lower pressing piece (103), wherein the lower pressing piece (103) is fixed on the rack (101), the end face of the top end of the lower pressing piece (103) is lower than the bottom surface of a second groove (122), a second air cylinder (104) is installed at the top end of the rack (101), and the rod end of a piston rod of the second air cylinder (104) is fixedly connected with the upper pressing piece (102).
6. The welding machine for welding the battery soft copper bars as claimed in claim 5, wherein: the upper pressing piece (102) sequentially comprises an upper guide pillar fixing plate (1021), an upper conductive connecting plate (1022), an upper heat insulation plate (1023) and an upper pressing head (1024) from top to bottom, the upper guide pillar fixing plate (1021), the upper conductive connecting plate (1022), the upper heat insulation plate (1023) and the upper pressing head (1024) are sequentially connected, and the upper guide pillar fixing plate (1021) is connected with a piston rod of the second cylinder (104); the lower pressing piece (103) sequentially comprises a lower guide pillar fixing plate (1031), a lower conductive connecting plate (1032), a lower heat insulation plate (1033) and a lower pressing head (1034) from bottom to top, the lower guide pillar fixing plate (1031), the lower conductive connecting plate (1032), the lower heat insulation plate (1033) and the lower pressing head (1034) are sequentially connected, and the lower guide pillar fixing plate (1031) is fixed on the rack (101).
7. A method for welding battery soft copper bars is characterized in that: the welding machine comprising the claim 6 comprises the following specific steps:
a, the PLC sends pulses to a driving motor (131), the driving motor (131) drives a lead screw (132) and a clamp (133) to move towards an assembly objective table (12), when the clamp is about to enter the position right below a first air guide sleeve (17), the PLC sends a specified number of pulses to finish, and the driving motor (131) reaches a set rotation angle and stops;
b, opening the bottom of the first tin sheet storage box (14), and releasing a tin sheet to the first groove (121), wherein the tin sheet is a bottom tin sheet;
c, starting a driving motor (131), driving the clamp (133) to move forwards by the driving motor (131), enabling the bottom tin sheet to enter a clamping opening between the lower clamping block (1333) and the upper clamping block (1332), pushing the bottom tin sheet to move in the first groove (121) and move to the position right below the third air guide sleeve (19) by the clamp (133), starting the driving motor (131) in the reverse direction and driving the clamp (133) to exit the position right below the third air guide sleeve (19), and stopping when the driving motor (131) reaches a set rotation angle;
d, the bottom of the copper sheet storage box (15) is opened, a copper lamination is discharged, the copper lamination is stacked right above a bottom tin sheet, the driving motor (131) is started and drives the clamp (133) to move forwards, the bottom tin sheet and the copper lamination enter a clamping opening between the lower clamping block (1333) and the upper clamping block (1332), the clamp (133) drives the bottom tin sheet and the copper lamination to move a region right below the second flow guide cover (18), the driving motor (131) is started in a reverse direction and drives the clamp (133) to exit the region right below the second flow guide cover (18), and the driving motor (131) reaches a set rotation angle and stops;
e, the bottom of the second tin sheet storage box (16) is opened, a tin sheet is discharged and stacked right above the copper lamination, the tin sheet is a top tin sheet, the driving motor (131) is started positively to drive the clamp (133) to move forward, the bottom tin sheet, the copper lamination and the top tin sheet all enter a clamping opening between the lower clamping block (1333) and the upper clamping block (1332), and the first air cylinder is started to drive the upper clamping block (1332) to press the lower clamping block (1333) to clamp the bottom tin sheet, the copper lamination and the top tin sheet on the clamp (133);
f, the driving motor (131) drives the clamp (133) to move to the lower pressing head (1034) and discharge the stacked copper on the lower pressing head, the welding machine (10) is started, the upper conductive connecting plate (1022) and the lower conductive connecting plate are electrified, and when the temperatures of the upper pressing head (1024) and the lower pressing head (1034) reach set values, the second air cylinder (104) drives the upper pressing head (1024) to press the bottom tin sheet, the copper lamination and the top tin sheet;
g, after the welding is finished, the driving motor (131) is started reversely to drive the pressed copper bar to move right above the window of the cooling water tank (11), the first air cylinder (1331) of the clamp (133) is started, the copper bar falls into the cooling water tank (11) through the window (111) to be cooled, and the clamp (133) resets.
8. The method for welding the battery soft copper bars as claimed in claim 7, wherein the method comprises the following steps: when the driving motor (131) is connected with the lead screw (132) through the elastic coupling, the transmission ratio is 1, and the lead calculation method is as follows:
in the formula
PB is lead of ball screw, mm;
vmax-maximum feed speed, m/s;
NR is the rated rotating speed of the motor, r/min;
i is the reduction ratio of the reducer of the motor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117206655A (en) * | 2023-11-07 | 2023-12-12 | 路鑫科技(东莞)有限公司 | High-frequency welding machine for soft copper bar production |
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| CN114227042B (en) | 2023-04-28 |
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Effective date of registration: 20240122 Address after: 311261, No. 528 Daixing Road, Daicun Town, Xiaoshan District, Hangzhou City, Zhejiang Province (self declared) Patentee after: HANGZHOU HUAXUN TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 311300 Wu Su street, Ling'an District, Hangzhou, Zhejiang Province, No. 666 Patentee before: ZHEJIANG A & F University Country or region before: China |