CN116713578A - Welding production line for power battery - Google Patents
Welding production line for power battery Download PDFInfo
- Publication number
- CN116713578A CN116713578A CN202310992008.XA CN202310992008A CN116713578A CN 116713578 A CN116713578 A CN 116713578A CN 202310992008 A CN202310992008 A CN 202310992008A CN 116713578 A CN116713578 A CN 116713578A
- Authority
- CN
- China
- Prior art keywords
- spot welding
- frame
- mounting
- linear module
- radiating pipe
- 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.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 192
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 128
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 64
- 230000007306 turnover Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- 238000003825 pressing Methods 0.000 claims description 22
- 238000005520 cutting process Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 3
- 238000000034 method Methods 0.000 description 18
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
The invention relates to the field of battery nickel sheet spot welding, and discloses a power battery welding production line, which comprises a frame, wherein a conveying belt, a clamping mechanism and a spot welding mechanism are arranged on the frame, the conveying belt is used for pulling the input and output of a battery pack, the clamping mechanism is used for clamping the battery pack, pulling the battery pack to move towards the spot welding mechanism and pulling the battery pack to turn over by one hundred eighty degrees, the spot welding mechanism is used for spot welding a battery, the spot welding mechanism comprises a linear module II, a linear module III and a mounting seat, the linear module III is used for driving the mounting seat to move along the width direction of the conveying belt, the linear module II is used for driving the linear module III and the mounting seat to move along the conveying direction of the conveying belt, the bottom of the mounting seat is rotatably provided with a mounting frame along the vertical direction, and a connecting shaft formed by the rotating mounting position is arranged on the motor II on the mounting seat to drive to rotate, and a spot welding component and a supply component are arranged on the mounting frame.
Description
Technical Field
The invention relates to the field of battery production and processing, in particular to the field of battery nickel sheet spot welding.
Background
The lithium battery is a common battery in our daily life, most of the lithium battery packs on the market at present are assembled by a plurality of cylindrical lithium batteries, in the production process of the lithium battery packs, a plurality of cylindrical lithium batteries are required to be spot-welded together through nickel plates, so that the lithium batteries are connected, most of the conventional lithium battery spot-welding is realized by manually placing forceps plates above the lithium batteries and then carrying out spot welding by matching with a spot welder, workers are easy to be scalded during spot welding, automatic spot welding is carried out based on the nickel plates of the batteries, a Chinese patent application publication number CN115533404A is found through retrieval, and although the automatic spot welding device for the nickel plates of the batteries can be realized, in the spot welding process, the nickel plates are only clamped through elastic clamping plates, so that the nickel plates are prevented from shifting, and the spot welding device has some defects: 1. the nickel sheet has elastic property, and is generally wound into a roll when being stored, so that when the nickel sheet is placed on an electrode of a battery, whether point contact or line contact exists between the nickel sheet and the electrode, whether assembly gaps exist between the nickel sheet and the electrode of the battery or the like cannot be ensured; 2. in the spot welding technology, the assembly gap between the workpieces must be as small as possible, because the pressure of a part of the spot welding electrode is consumed by the pressure elimination gap, so that the actual welding pressure is reduced, and the spot welding result is affected; in the spot welding process, if the welding position between the workpiece and the workpiece is not completely attached, but is in point contact or line contact, the spot welding is easy to occur, so that the welding is not firm, the spot welding splashing phenomenon is easy to occur, and the surface of the workpiece is easy to be damaged by the spot welding splashing phenomenon; the perpendicularity between the spot welding electrode and the workpiece is also one of factors affecting the spot welding spatter phenomenon; based on 1 and 2, it is known that it is necessary to improve the spot welding firmness, reduce the occurrence of the spot welding spatter phenomenon, and reduce the influence of the spot welding spatter on the battery after the spot welding spatter is generated when the nickel plate is subjected to the automated spot welding.
Based on the above, the invention provides a power battery welding production line.
Disclosure of Invention
In order to solve the problems mentioned in the background above, the present invention provides a power battery welding production line.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
The power battery welding production line comprises a frame, wherein a conveying belt, a clamping mechanism and a spot welding mechanism are arranged on the frame, the conveying belt is used for carrying out input and output of a traction battery pack, the clamping mechanism is used for clamping the battery pack, the traction battery pack moves towards the spot welding mechanism, the traction battery pack is overturned by one hundred eighty degrees, and the spot welding mechanism is used for carrying out spot welding on a nickel sheet of a battery;
the spot welding mechanism comprises a linear module II, a linear module III and a mounting seat, wherein the linear module III is used for driving the mounting seat to move along the width direction of the conveying belt, the linear module II is used for driving the linear module III and the mounting seat to move along the conveying direction of the conveying belt together, the bottom of the mounting seat is provided with a mounting frame in a rotating manner along the vertical direction, a connecting shaft formed by the rotating mounting position is driven to rotate by a motor II arranged on the mounting seat, and spot welding members and supply members are arranged on the mounting frame.
Further, the spot welding component includes the spot welding frame of being connected with the mounting bracket, has the support body along vertical direction slidable mounting in the spot welding frame, has the linking arm along vertical direction slidable mounting in the support body, is provided with between the lower extreme of linking arm and the support body and is provided with the spring two, peg graft between the upper end of linking arm and the support body has the inserted block, is provided with on the spot welding frame and is used for driving the inserted block to take place the sharp module four of removal along vertical direction, is provided with the erection column that is vertical arrangement on the support body.
Further, the bottom of the mounting column is provided with a guide rod in a sliding manner along the vertical direction, the bottom of the guide rod is provided with a pressing body coaxial with the mounting column, a spring III is arranged between the guide rod and the mounting column, and the spring III drives the guide rod to move vertically downwards.
Further, the upper end of the mounting column is coaxially provided with an inlet and outlet cover, the lower end face of the inlet and outlet cover is provided with a water outlet groove, the bottom of the water outlet groove is provided with two groups of water inlet grooves, the two groups of water inlet grooves are communicated through a middle hole, and the side face of the inlet and outlet cover is provided with a water inlet channel communicated with the water inlet groove and a water outlet channel communicated with the water outlet groove.
Further, the spot welding component comprises a radiating pipe, one end of the radiating pipe is opened, one section of the radiating pipe is closed, the outer circular surface extends to form a side pipe, one end of the side pipe is opened, one end of the side pipe is closed, the side pipe is communicated with the radiating pipe, and the communicating position is close to the closed end of the radiating pipe;
the mounting column is internally provided with a mounting groove which is identical to the radiating pipe in shape, the radiating pipe is arranged in the mounting groove, the opening end of the radiating pipe is connected with the notch of the water inlet groove, and the opening of the side pipe is communicated with the water outlet groove and plugs the notch of the water outlet groove through the upper end of the mounting column.
Further, the spot welding component further comprises a connecting rod which is vertically arranged, the connecting rod is made of a heat conducting material, a hidden hole communicated with the mounting groove is formed in the bottom of the mounting column, one end of the connecting rod is provided with a fixing ring and is located above the suspension end of the connecting arm, the other end of the connecting rod sequentially penetrates through the connecting arm, the access cover and the radiating pipe, then stretches into the hidden hole and is detachably provided with a spot welding electrode head, the connecting arm and the radiating pipe are respectively provided with an avoidance hole for avoiding the connecting rod, and the access cover is provided with a penetrating hole for avoiding the connecting rod;
the pressing body is provided with a spot welding hole which is coaxial with the hidden hole.
Further, the outside of connecting rod still is provided with the external step that is located between linking arm and business turn over lid, is provided with the spring IV between external step and the linking arm.
Further, the fins which are spirally distributed are arranged in the radiating pipe and are in contact with the connecting rod.
Further, the supply component is arranged on one side of the spot welding component, the supply component comprises a guide frame connected with the mounting frame, a storage box is mounted on the guide frame, a nickel sheet is stored in the storage box, a guide hole is further formed in the guide frame, the shape of the guide hole is matched with that of the nickel sheet, the free end of the nickel sheet stretches into the guide hole, a traction component for traction of the nickel sheet to move is arranged at the orifice of the guide hole, and a cutting component for cutting the nickel sheet is further arranged on the guide frame.
Compared with the prior art, the invention has the beneficial effects that:
in the spot welding process, the linear module IV drives the insert block to move downwards, the insert block moves downwards firstly to move downwards along with the bracket body and the connecting arm, and the bracket body moves downwards along with the mounting column and the pressing body;
in the process that the pressing body moves downwards to contact with the nickel sheet and pushes the nickel sheet to contact with the battery electrode, the nickel sheet is contacted with the battery electrode by pressing downwards by the pressing body, so that the problem that the assembly gap between the workpiece is eliminated, part of the pressure of the spot welding electrode is consumed, the actual welding pressure is reduced, and the spot welding result is influenced is solved;
after the nickel sheet is contacted with the battery electrode, the insert block moves downwards to continuously move downwards along with the bracket body, the connecting arm and the mounting column, the spring III is compressed, and at the moment, the downwards moving of the downwards pressing body enables the periphery of the spot welding position to be in full surface contact with the battery electrode, so that the problems that in the spot welding process, if point contact or line contact exists at the welding position between the workpiece and the workpiece, the welding is unstable due to false welding and spot welding splashing phenomenon is easy to occur are solved;
after the support body is contacted with the lower end of the spot welding frame, the insert moves downwards to continuously move downwards with the connecting arm, the second spring is compressed, the connecting arm moves downwards to drive the connecting rod to move downwards together with the spot welding electrode tip through the fourth spring, after the spot welding electrode tip moves downwards to be contacted with the nickel sheet, the insert continues to move downwards for a preset distance, the fourth spring is compressed to enable the welding pressure to be at a preset value, the welding pressure is not influenced by the 'assembly gap between workpieces', the welding pressure acted on spot welding is kept consistent with the preset value, and the welding result is more consistent with the expected setting;
then, carry out spot welding through spot welding electrode tip to battery electrode and nickel piece, the in-process of spot welding, the heat that spot welding produced is conducted the connecting rod to taken away by the flowing water in the cooling tube, make nickel piece spot welding after ending, the welding department can cool off rapidly and solidify, when guaranteeing that follow-up spot welding component removes and carries out the spot welding to next battery, can not lead to the fact the influence to the spot welding department to the pulling that the spot welding department produced before, in addition, during the spot welding, if when the spot welding splash phenomenon of unavoidable production, because the existence of spot welding hole, can block the spark that splashes and keep apart, can not lead to the fact the influence to the battery.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a clamping mechanism;
FIG. 3 is a schematic view of a clamping member and a post;
FIG. 4 is a schematic view of a clamping member;
FIG. 5 is a schematic view of a spot welding mechanism;
FIG. 6 is a schematic view of a mounting bracket, spot welding member and supply member;
fig. 7 is a schematic structural view of a spot welding member;
FIG. 8 is a partial schematic view of a spot welding member;
FIG. 9 is a partial schematic view of a second spot welding member;
fig. 10 is an exploded view of the radiating pipe and the connection rod;
fig. 11 is a cross-sectional view of the access cover and the radiating pipe one;
fig. 12 is a second cross-sectional view of the access cover and the radiating pipe;
FIG. 13 is a schematic illustration of a first supply member;
fig. 14 is a schematic diagram of a supply member.
The reference numerals in the drawings are:
100. a frame; 101. a conveyor belt;
200. a clamping mechanism; 201. a lifting frame; 202. a first linear module; 203. a column; 204. a driving module; 205. a first motor; 206. a turnover shaft; 207. a clamping frame; 208. a first spring; 209. an adjustment shaft; 210. a knob; 211. a screw rod; 212. clamping blocks;
300. a spot welding mechanism; 301. a second linear module; 302. a linear module III; 303. a mounting base; 304. a mounting frame; 305. a second motor; 306. spot welding a member; 307. a supply member; 3071. a storage box; 3072. a guide frame; 3073. a traction member; 3074. a cutting member; 308. a bracket body; 309. a connecting arm; 310. a second spring; 311. inserting blocks; 312. a straight line module IV; 313. a mounting column; 314. a guide rod; 315. pressing down the body; 316. a third spring; 317. spot welding holes; 318. a connecting rod; 319. spot welding the electrode tip; 320. a spring IV; 321. a cover for opening and closing; 3211. a water inlet tank; 3212. a water outlet tank; 3213. a water inlet channel; 3214. a water outlet channel; 3215. penetrating holes; 322. a heat radiating pipe; 3221. a side pipe; 3222. and (3) a fin.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
In the drawings of the scheme, a refers to a battery, and b refers to a nickel plate.
As shown in fig. 1-14, a power battery welding production line comprises a frame 100, a conveying belt 101, a clamping mechanism 200 and a spot welding mechanism 300, wherein the conveying belt 101, the clamping mechanism 200 and the spot welding mechanism 300 are arranged on the frame 100, the conveying belt 101 is used for pulling in and out a battery pack, the clamping mechanism 200 is used for clamping the battery pack, pulling the battery pack to move towards the spot welding mechanism 300 and pulling the battery to turn over by one hundred eighty degrees, and the spot welding mechanism 300 is used for spot welding nickel plates of the battery.
Clamping mechanism 200:
as shown in fig. 2 to 4, the clamping mechanism 200 includes a lifting frame 201 and a first linear module 202 for driving the lifting frame 201 to move in a vertical direction, two sets of upright posts 203 are slidably mounted on the lifting frame 201 along a width direction of the conveying belt 101, and a driving module 204 for driving the two sets of upright posts 203 to approach or separate from each other is provided.
Each of the upright posts 203 is provided with a group of clamping members, and the two groups of clamping members are respectively located at two sides of the conveying belt 101 along the conveying direction.
As shown in fig. 3 and 4, the holding member includes a turnover shaft 206 slidably mounted on the upper end of the upright 203 along the width direction of the conveyor belt 101, a holding frame 207 is disposed at one end of the turnover shaft 206 facing the conveyor belt 101, a first spring 208 disposed between the upright 203 and the holding frame 207 is sleeved outside the turnover shaft 206, a limit ring is disposed outside the turnover shaft 206, and one side of the limit ring facing the conveyor belt 101 contacts the upright 203.
The clamping frame 207 is provided with a screw rod 211 parallel to the conveying direction of the conveying belt 101, the screw rod 211 is axially divided into two groups of screw thread sections with opposite screw threads, a group of clamping blocks 212 are respectively arranged outside each group of screw thread sections, the clamping blocks 212 and the clamping frame 207 form sliding fit at the same time, one side of each group of clamping blocks 212, which is opposite, is provided with an inclined plane, and the distance between the inclined planes of the two groups of clamping blocks 212 is gradually increased along the axial direction of the turnover shaft 206 and the direction of the conveying belt 101, which is pointed by the clamping frame 207, of the conveying belt 101.
The inside of the turnover shaft 206 is hollow and sleeved with an adjusting shaft 209, the input end of the adjusting shaft 209 is provided with a knob 210, and the output end of the adjusting shaft is in power connection with a screw rod 211; the screw rod 211 can be driven to rotate by rotating the adjusting shaft 209 through the knob 210, so that the distance between the two groups of clamping blocks 212 is changed to adapt to battery packs with different sizes.
As shown in fig. 2, a first motor 205 is disposed on the lifting frame 201, the first motor 205 and the turning shaft 206 form a power connection, further, since the turning shaft 206 will displace, a driven member of a power transmission path disposed between the turning shaft 206 and the first motor 205 is mounted on the turning shaft 206 through a spline, when the turning shaft 206 moves, the driven member continuously supplies power to the turning shaft 206, a convex ring coaxially extends on an end surface of the driven member, and a rotation connection is formed between the convex ring and the lifting frame 201.
The working process of the clamping mechanism 200 is specifically:
placing the battery pack on the conveyor belt 101 by manual or mechanical arm technology, and dragging the battery pack to move between the two groups of clamping members by the conveyor belt 101;
then, the driving module 204 drives the two groups of upright posts 203 to be close to each other, and then drives the two groups of clamping members to be close to each other through the first spring 208, so as to clamp the battery pack on the conveyor belt 101, after clamping is completed, the first linear module 202 drives the lifting frame 201 to move upwards, so that the battery is close to the spot welding mechanism 300, and after the upper end of the battery is subjected to nickel sheet spot welding, the first motor 205 drives the turning shaft 206 to rotate for one hundred eighty degrees, so that the battery is turned for one hundred eighty degrees, the other end of the battery faces upwards, and spot welding is performed on the other end of the battery;
after the spot welding is completed, the first linear module 202 drives the lifting frame 201 to move downwards to put the battery back to the conveying belt 101, the driving module 204 drives the two groups of upright posts 203 to be mutually far away, the two groups of clamping members are further arranged on the limiting ring to be mutually far away, clamping of the battery is canceled, the conveying belt 101 runs to pull the battery to leave, and the next group of battery is pulled to be positioned in the two groups of clamping members.
In the above process, since the inclined surface is provided on the clamping block 212, during the process of conveying the battery by the conveying belt 101, a slight position error exists along the conveying direction, so that the clamping of the battery by the clamping mechanism 200 is not affected;
in the above process, the distance between the two groups of clamping blocks 212 is adjusted according to the specification and the size of the battery, so that the batteries with different specifications can be clamped.
Spot welding mechanism 300:
as shown in fig. 5 and 6, the spot welding mechanism 300 includes a second linear module 301, a third linear module 302, and a mounting seat 303, wherein the third linear module 302 is configured to drive the mounting seat 303 to move along the width direction of the conveyor belt 101, and the second linear module 301 is configured to drive the third linear module 302 and the mounting seat 303 to move along the conveying direction of the conveyor belt 101.
The bottom of the mounting seat 303 is rotatably provided with a mounting frame 304 along the vertical direction, and a connecting shaft formed at the rotation mounting position is driven to rotate by a second motor 305 arranged on the mounting seat 303.
The mounting bracket 304 is provided with a spot welding member 306 and a supply member 307.
Specifically, as shown in fig. 6-12, the spot welding member 306 includes a spot welding frame connected to the mounting frame 304, a bracket body 308 is slidably mounted in the spot welding frame along a vertical direction, a connecting arm 309 is slidably mounted in the bracket body 308 along a vertical direction, a second spring 310 is disposed between the connecting arm 309 and a lower end of the bracket body 308, an insert block 311 is inserted between the connecting arm 309 and an upper end of the bracket body 308, and a fourth linear module 312 for driving the insert block 311 to move along the vertical direction is disposed on the spot welding frame.
The bracket body 308 is provided with a vertically arranged mounting post 313.
As shown in fig. 8, a guide rod 314 is slidably mounted at the bottom of the mounting column 313 along the vertical direction, a pressing body 315 coaxial with the mounting column 313 is disposed at the bottom of the guide rod 314, a third spring 316 is disposed between the guide rod 314 and the mounting column 313, and the guide rod 314 is driven to vertically move downwards by the elastic force of the third spring 316.
When the fourth linear module 312 drives the insert 311 to move downward, the spring coefficient of the second spring 310 is greater than that of the third spring 316, so that: the insert block 311 moves downwards firstly, the bracket body 308 moves downwards together with the connecting arm 309, and the bracket body 308 moves downwards together with the pressing body 315 by the mounting column 313;
in the process that the pressing body 315 moves downwards to contact with the nickel sheet and pushes against the nickel sheet to contact with the battery electrode, the nickel sheet is contacted with the battery electrode by pressing downwards the pressing body 315, so that the problem that 'eliminating the assembly gap between workpieces consumes part of the pressure of the spot welding electrode, reduces the actual welding pressure and influences the spot welding result' is solved;
after the nickel sheet is contacted with the battery electrode, the insert block 311 moves downwards to further move downwards along with the bracket body 308, the connecting arm 309 and the mounting column 313, the spring III 316 is compressed, and at the moment, the downwards moving of the downwards pressing body 315 enables the periphery of the spot welding position to be in full surface contact with the battery electrode, so that the problems that in the spot welding process, if point contact or line contact exists at the welding position between the workpiece and the workpiece, the welding is unstable due to easy occurrence of cold welding and spot welding splashing phenomenon are solved;
after the bracket body 308 contacts the lower end of the spot welding frame, the insert 311 moves downward to continue to move downward with the connecting arm 309, and the second spring 310 is compressed.
As shown in fig. 8-12, an inlet and outlet cover 321 is coaxially mounted at the upper end of the mounting post 313, as shown in fig. 11 and 12, a water outlet groove 3212 is arranged at the lower end surface of the inlet and outlet cover 321, two groups of water inlet grooves 3211 are arranged at the bottom of the water outlet groove 3212, the two groups of water inlet grooves 3211 are communicated through a middle hole, and a water inlet channel 3213 communicated with the water inlet groove 3211 and a water outlet channel 3214 communicated with the water outlet groove 3212 are arranged on the side surface of the inlet and outlet cover 321.
The spot welding member 306 further includes a heat dissipation tube 322, one end of the heat dissipation tube 322 is opened, one section of the heat dissipation tube 322 is closed, and the outer circular surface extends to form a side tube 3221, one end of the side tube 3221 is opened, one end of the side tube 3221 is closed, and the side tube 3221 is communicated with the heat dissipation tube 322 and the communicating position is close to the closed end of the heat dissipation tube 322.
The installation column 313 is internally provided with an installation groove which is matched with the radiating pipe 322 in shape, the radiating pipe 322 is arranged in the installation groove, the opening end of the radiating pipe 322 is connected with the notch of the water inlet groove 3211, the opening of the side pipe 3221 is communicated with the water outlet groove 3212, and the notch of the water outlet groove 3212 is blocked through the upper end of the installation column 313; so that the water medium can flow into the heat dissipating tube 322 through the water inlet channel 3213 and the water inlet channel 3211, and the water medium in the heat dissipating tube 322 is discharged through the side tube 3221, the water outlet channel 3212 and the water outlet channel 3214, thereby forming a stream of flowing water in the heat dissipating tube 322.
As shown in fig. 8-10, the spot welding member 306 further includes a connecting rod 318 in a vertical arrangement, the connecting rod 318 being made of a thermally conductive material, such as copper.
The bottom of erection column 313 is provided with the hidden hole with the mounting groove intercommunication, the one end of connecting rod 318 is provided with solid fixed ring and is located the top of connecting arm 309 suspension end, the other end passes connecting arm 309 in proper order, business turn over lid 321, in the radiating pipe 322 back stretches into hidden downthehole and detachably installs spot welding electrode tip 319, all set up on connecting arm 309, the radiating pipe 322 and be used for dodging the hole of dodging connecting rod 318, set up on business turn over lid 321 and be used for dodging the hole 3215 of establishing of connecting rod 318, in addition, dodging the hole and wearing to establish the hole 3215 and be provided with the sealing washer that is used for sealedly.
The outer part of the connecting rod 318 is also provided with an external step between the connecting arm 309 and the access cover 321, and a spring IV 320 is provided between the external step and the connecting arm 309.
The pressing body 315 is provided with a spot welding hole 317, and the spot welding hole 317 is coaxial with the hidden hole.
After the bracket body 308 contacts with the lower end of the spot welding frame, the insert block 311 moves downwards to continuously move along with the connecting arm 309, the second spring 310 is compressed, the connecting arm 309 moves downwards to drive the connecting rod 318 to move downwards together with the spot welding electrode head 319 through the fourth spring 320, after the spot welding electrode head 319 moves downwards to contact with the nickel sheet, the insert block 311 continues to move downwards for a preset distance, the fourth spring 320 is compressed to enable the welding pressure to be at a preset value, the welding pressure is not influenced by the 'assembly gap between workpieces', the welding result is firmer, then the battery electrode and the nickel sheet are subjected to spot welding through the spot welding electrode head 319, heat generated by spot welding is conducted to the connecting rod 318 and is taken away by flowing water in the radiating pipe 322 in the spot welding process, and if the spot welding is inevitably generated, the splash phenomenon is generated, due to the existence of the spot welding hole 317, the splash spark is blocked and the battery is not influenced.
Preferably, in order to increase heat exchange between the aqueous medium and the connection rod 318, the heat radiating pipe 322 is internally provided with fins 3222 spirally distributed, and the fins 3222 are in contact with the connection rod 318.
As shown in fig. 6, 13 and 14, the supply member 307 is disposed on one side of the spot welding member 306, the supply member 307 includes a guide frame 3072 connected to the mounting frame 304, a storage box 3071 is mounted on the guide frame 3072, and nickel sheets are stored in the storage box 3071, when the nickel sheets are used up, new nickel sheets can be placed in the storage box 3071, which is a technical means easily obtained by a person skilled in the art, and is realizable in the prior art, and will not be described.
The guide frame 3072 is internally provided with a guide hole, the shape of the guide hole is matched with that of the nickel sheet, the free end of the nickel sheet stretches into the guide hole, the nickel sheet is pulled to move in the guide hole through a pulling part 3073 arranged at the orifice of the guide hole, further, the pulling part 3073 comprises two groups of rotating rods arranged on the guide frame 3072, the two groups of rotating rods are respectively positioned at two sides of the orifice of the guide hole, a direct gear set is arranged between the two groups of rotating rods, and a motor III for driving any rotating rod to rotate is arranged on the guide frame 3072; the three operation of the motor drives the two groups of rotary rods to rotate, and the nickel sheet is pulled to move through the rotation of the two groups of rotary rods.
The guide frame 3072 is further provided with a cutting part 3074 for cutting off the nickel sheet after the spot welding of the battery nickel sheet on the same straight line is finished, and further, the cutting part comprises a cutter which is slidably arranged on the guide frame 3072 and is perpendicular to the nickel sheet, and a motor IV arranged on the guide frame 3072, a crank block structure is arranged between the motor IV and the cutter, and the cutter is driven to move by the motor IV to further cut off the nickel sheet through the crank block structure.
In this scheme, the straight line module can be electric telescopic handle technique, also can be: the motor drives the screw rod to rotate, the screw rod rotates to drive the screw rod seat to move, and the screw rod seat moves to drive an object connected with the screw rod seat to move together.
In this scheme, the drive module can be: the motor drives the screw rod to rotate, the screw rod is axially divided into two sections with opposite screw threads, each section is provided with a screw rod seat, the screw rod rotates to drive the two screw rod seats to be close to or far away from each other, and then objects connected with the screw rod seats are driven to be close to or far away from each other.
The working principle of the invention is as follows:
step one: placing the battery pack on a conveyor belt 101, and conveying the battery pack between two groups of clamping members through the conveyor belt 101;
step two: the clamping of the battery pack is realized through the matching of the two groups of clamping members;
step three: the clamping member and the battery pack are driven to move up to approach the spot welding mechanism 300 by the first linear module 202;
step four: the traction component 3073 operates to draw the nickel sheet to move so that the nickel sheet is positioned above the electrodes of the battery pack;
step five: the fourth linear module 312 drives the insert 311 to move downwards, and since the spring coefficient of the second spring 310 is greater than that of the third spring 316, the following is: the insert block 311 moves downwards firstly, the bracket body 308 moves downwards together with the connecting arm 309, and the bracket body 308 moves downwards together with the pressing body 315 by the mounting column 313;
in the process that the pressing body 315 moves downwards to contact with the nickel sheet and pushes against the nickel sheet to contact with the battery electrode, the nickel sheet is contacted with the battery electrode by pressing downwards the pressing body 315, so that the problem that 'eliminating the assembly gap between workpieces consumes part of the pressure of the spot welding electrode, reduces the actual welding pressure and influences the spot welding result' is solved;
after the nickel sheet is contacted with the battery electrode, the insert block 311 moves downwards to further move downwards along with the bracket body 308, the connecting arm 309 and the mounting column 313, the spring III 316 is compressed, and at the moment, the downwards moving of the downwards pressing body 315 enables the periphery of the spot welding position to be in full surface contact with the battery electrode, so that the problems that in the spot welding process, if point contact or line contact exists at the welding position between the workpiece and the workpiece, the welding is unstable due to easy occurrence of cold welding and spot welding splashing phenomenon are solved;
after the bracket body 308 is contacted with the lower end of the spot welding frame, the insert block 311 moves downwards to continuously move along with the connecting arm 309, the second spring 310 is compressed, the connecting arm 309 moves downwards to drive the connecting rod 318 to move downwards together with the spot welding electrode head 319 through the fourth spring 320, after the spot welding electrode head 319 moves downwards to be contacted with the nickel sheet, the insert block 311 continues to move downwards for a preset distance, the fourth spring 320 is compressed to enable the welding pressure to be at a preset value, the welding pressure is not influenced by the 'assembly gap between workpieces', the welding result is firmer, then spot welding is carried out on a battery electrode and the nickel sheet through the spot welding electrode head 319, heat generated by spot welding is conducted to the connecting rod 318 and is taken away by flowing water in the radiating pipe 322 in the spot welding process, and if the spot welding is inevitably carried out, the splash phenomenon of the splashed spark is blocked and the battery is not influenced due to the existence of the spot welding hole 317;
step six: the fourth linear module 312 drives the insert block 311 to move upwards, the spot welding component 306 is reset, the second linear module 301 and the third linear module 302 are matched, the spot welding component 306 and the supply component 307 are driven to move towards the electrode of the next battery together, and in the moving process, the traction component 3073 operates to traction the nickel sheet to move, so that the nickel sheet is positioned above the electrode of the next battery;
then repeating the fifth step;
step seven: continuously repeating the step six until the batteries positioned in the same row are subjected to spot welding, and cutting off the nickel sheet through a cutting part 3074;
step eight: repeating the first step to the seventh step, and performing nickel sheet spot welding on the batteries on other rows;
step nine: the second motor 305 drives the mounting seat 303 and the mounting frame 304 to rotate ninety degrees, and then the eighth step is repeated to spot weld nickel plates of the batteries positioned on the same row;
step ten: after the electrode on the same side of the battery pack is subjected to spot welding, the clamping member turns over one hundred eighty degrees with the battery pack to enable the electrode on the other side of the battery pack to face upwards, and then the step one to the step nine are repeated to spot weld the electrode on the other side of the battery pack;
step eleven: after the spot welding is finished, the first linear module 202 drives the clamping member and the battery pack to move downwards, so that the battery pack is located on the conveying belt 101 again, then the clamping member releases the clamping of the battery pack, the conveying belt 101 runs and takes away the battery pack, and the next battery pack is pulled to be located between the two groups of clamping members.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (9)
1. A power battery welding line comprising a frame (100), characterized in that: the frame (100) is provided with a conveying belt (101), a clamping mechanism (200) and a spot welding mechanism (300), the conveying belt (101) is used for carrying out input and output of a traction battery pack, the clamping mechanism (200) is used for clamping the battery pack, the traction battery pack moves towards the spot welding mechanism (300) and the traction battery pack turns over by one hundred eighty degrees, and the spot welding mechanism (300) is used for carrying out spot welding on nickel plates of the battery; the spot welding mechanism (300) comprises a linear module II (301), a linear module III (302) and a mounting seat (303), wherein the linear module III (302) is used for driving the mounting seat (303) to move along the width direction of the conveying belt (101), the linear module II (301) is used for driving the linear module III (302) and the mounting seat (303) to move along the conveying direction of the conveying belt (101), the bottom of the mounting seat (303) is rotatably provided with a mounting frame (304) along the vertical direction, a connecting shaft formed at the rotating mounting position is driven to rotate by a motor II (305) arranged on the mounting seat (303), and spot welding members (306) and supply members (307) are arranged on the mounting frame (304).
2. A power cell welding line according to claim 1, characterized in that: the spot welding component (306) comprises a spot welding frame connected with the mounting frame (304), a support body (308) is slidably mounted in the spot welding frame along the vertical direction, a connecting arm (309) is slidably mounted in the support body (308) along the vertical direction, a second spring (310) is arranged between the connecting arm (309) and the lower end of the support body (308), an inserting block (311) is inserted between the connecting arm (309) and the upper end of the support body (308), a fourth linear module (312) for driving the inserting block (311) to move along the vertical direction is arranged on the spot welding frame, and a mounting column (313) which is vertically arranged is arranged on the support body (308).
3. A power cell welding line according to claim 2, characterized in that: the bottom of the mounting column (313) is provided with a guide rod (314) in a sliding manner along the vertical direction, the bottom of the guide rod (314) is provided with a pressing body (315) coaxial with the mounting column (313), a spring III (316) is arranged between the guide rod (314) and the mounting column (313), and the elastic force of the spring III (316) drives the guide rod (314) to vertically move downwards.
4. A power cell welding line according to claim 3, characterized in that: the upper end of the mounting column (313) is coaxially provided with a feeding and discharging cover (321), the lower end face of the feeding and discharging cover (321) is provided with a water outlet groove (3212), the bottom of the water outlet groove (3212) is provided with two groups of water inlet grooves (3211), the two groups of water inlet grooves (3211) are communicated through a middle hole, and the side face of the feeding and discharging cover (321) is provided with a water inlet channel (3213) communicated with the water inlet groove (3211) and a water outlet channel (3214) communicated with the water outlet groove (3212).
5. The power cell welding line of claim 4, wherein: the spot welding component (306) comprises a radiating pipe (322), one end of the radiating pipe (322) is opened, one section of the radiating pipe is closed, the outer circular surface extends to form a side pipe (3221), one end of the side pipe (3221) is opened, one end of the side pipe is closed, the side pipe (3221) is communicated with the radiating pipe (322), and the communicating position is close to the closed end of the radiating pipe (322); the installation column (313) is internally provided with an installation groove which is matched with the radiating pipe (322) in shape, the radiating pipe (322) is arranged in the installation groove, the opening end of the radiating pipe (322) is connected with the notch of the water inlet groove (3211), and the opening of the side pipe (3221) is communicated with the water outlet groove (3212) and seals the notch of the water outlet groove (3212) through the upper end of the installation column (313).
6. The power cell welding line of claim 5, wherein: the spot welding component (306) further comprises a connecting rod (318) which is vertically arranged, the connecting rod (318) is made of a heat conducting material, a hidden hole which is communicated with the mounting groove is formed in the bottom of the mounting column (313), a fixing ring is arranged at one end of the connecting rod (318) and located above the suspension end of the connecting arm (309), the other end of the connecting rod (318) sequentially penetrates through the connecting arm (309), the access cover (321) and the radiating pipe (322) and then stretches into the hidden hole to be detachably provided with a spot welding electrode head (319), avoidance holes for avoiding the connecting rod (318) are formed in the connecting arm (309) and the radiating pipe (322), and penetrating holes (3215) for avoiding the connecting rod (318) are formed in the access cover (321); and spot welding holes (317) are formed in the pressing body (315), and the spot welding holes (317) are coaxial with the hidden holes.
7. The power cell welding line of claim 6, wherein: the outside of connecting rod (318) still is provided with the external step that is located between linking arm (309) and business turn over lid (321), is provided with spring IV (320) between external step and linking arm (309).
8. The power cell welding line of claim 6, wherein: fins (3222) which are spirally distributed are arranged in the radiating pipe (322), and the fins (3222) are in contact with the connecting rod (318).
9. The power cell welding line of claim 6, wherein: the supply component (307) is arranged on one side of the spot welding component (306), the supply component (307) comprises a guide frame (3072) connected with the mounting frame (304), a storage box (3071) is mounted on the guide frame (3072), nickel sheets are stored in the storage box (3071), guide holes are further formed in the guide frame (3072), the shapes of the guide holes are matched with those of the nickel sheets, the free ends of the nickel sheets extend into the guide holes, traction components (3073) for traction of the nickel sheets are arranged at the positions of the holes of the guide holes, and cutting components (3074) for cutting the nickel sheets are further arranged on the guide frame (3072).
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| CN202310992008.XA CN116713578B (en) | 2023-08-08 | 2023-08-08 | Welding production line for power battery |
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| CN202310992008.XA CN116713578B (en) | 2023-08-08 | 2023-08-08 | Welding production line for power battery |
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| CN116921943A (en) * | 2023-09-15 | 2023-10-24 | 广东洋基科技有限公司 | Multi-dimensional auxiliary welding device and method for electrode nickel plate of lithium battery pack |
| CN118492628A (en) * | 2024-07-18 | 2024-08-16 | 深圳市荣利伟业科技有限公司 | Welding device for lithium battery |
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| CN116713578B (en) | 2023-10-13 |
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