A BC battery string welding machine of half piece, welding wire and adhesive tape

Abstract

The utility model discloses a kind of BC battery string welding machine of half piece, welding wire and adhesive tape, including silicon wafer handling mechanism, silicon wafer surface turning mechanism, silicon wafer and adhesive tape assembly mechanism, welding wire cutting and placing mechanism and welding wire welding mechanism, silicon wafer handling mechanism is heated to the double half piece of laser cutting and carries out temperature heating treatment, silicon wafer surface turning mechanism is turned over after the double half piece after blow-drying, distance is pulled apart, and is turned and is close to positioning and photographing detection, silicon wafer and adhesive tape assembly mechanism are cut to the adhesive tape that is stretched out, the position between half piece is adhered by hot melting mode to adhesive tape, welding wire cutting and placing mechanism is respectively undertaken odd number column and double number column's welding wire pull-out and cutting in left and right sides, ensure the position of welding wire, welding wire welding mechanism is placed in lower, place adhesive tape bonding together battery string and carry out string welding treatment, entire process does not need manual participation, flow type string welding processing process, quickly produce BC battery string with customer needs, quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of silicon wafer string bonding, and more particularly to a BC battery string bonding machine consisting of half wafers, welding wires, and adhesive strips. Background Technology

[0002] Photovoltaic silicon wafers are the core and most valuable component of a solar power generation system. Their function is to convert solar energy into electrical energy, which is then stored in batteries or used directly as a power source. Currently, customers using BC batteries (back-contact batteries, which can be combined with various circuits) require stringing several half-wafers together using welding wire. This involves flipping and rotating laser-cut half-wafers, stringing them together with hot-melt adhesive strips, and then performing infrared stringing with the cut welding wire. Utility Model Content

[0003] One objective of this invention is to provide a BC battery string welding machine that automatically automates the drying, flipping, and turning of the two half-cells, strings the half-cells together with hot melt adhesive strips, and then welds the welding wire to form a battery string. This eliminates the need for manual intervention, saving resources and improving efficiency.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A BC battery string welding machine comprising half-wafers, welding wires, and adhesive strips includes a silicon wafer transport mechanism, a silicon wafer flipping and turning mechanism, a silicon wafer and adhesive strip assembly mechanism, a welding wire cutting and placement mechanism, and a welding wire welding mechanism. The silicon wafer transport mechanism heats the laser-cut double half-wafers. The silicon wafer flipping and turning mechanism flips the dried double half-wafers, separates them, turns them, and positions them for photographic inspection. The silicon wafer and adhesive strip assembly mechanism cuts the stretched adhesive strips and uses heat melting to adhere the adhesive strips between the half-wafers. The welding wire cutting and placement mechanism pulls out and cuts the welding wires in odd and even rows on the left and right sides respectively, ensuring the position of the welding wires. The welding wire welding mechanism places the cut welding wires below and places the battery strings bonded together with adhesive strips for string welding.

[0006] As a preferred technical solution, the silicon wafer handling mechanism includes a half-wafer handling bracket, a handling translation module, and a drying heating chamber. A handling support plate is fixed on the half-wafer handling bracket, and handling fixing suction holes are distributed along the front-back direction on the handling support plate. A handling lifting motor is installed on the drive end of the handling translation module, and a handling lifting cam is connected to the drive end of the handling lifting motor. A handling lifting module is arranged below the handling support plate, and a handling strip is connected to the upper end of the handling lifting module. The handling strip is located in the middle of the handling support plate, and the handling lifting cam controls the up-and-down movement of the handling strip. The drying heating chamber is installed above the handling support plate.

[0007] As a preferred technical solution, the two sides of the drying and heating chamber are fixed in the middle of the transport support plate, a drying and heating rod is installed inside the drying and heating chamber, a vent plate is provided above the drying and heating rod, and a drying and heating cooling fan is installed above the drying and heating chamber.

[0008] As a preferred technical solution, the silicon wafer flipping and turning mechanism includes a flipping bracket, a translational snap-fit ​​bracket, a half-wafer turning X-axis module, a half-wafer turning Z-axis module, and a half-wafer approaching bracket. A flipping shaft is rotatably connected to the flipping bracket, and a flipping frame is fixed to the flipping shaft. Translational strips are provided on both sides of the translational snap-fit ​​bracket, and translational belts are movable on the translational strips. Translational suction holes are provided on the translational belts. Translational snap-fit ​​arms are provided on both sides of the translational strips, and translational snap-fit ​​wheels are mounted on the translational snap-fit ​​arms. The half-wafer turning Z-axis module is mounted on the drive end of the half-wafer turning X-axis module. Two steering cylinders move along the Y-axis direction on the drive end of the half-wafer turning Z-axis module, and steering suction cups are connected to the drive ends of the steering cylinders. An approaching base is provided at the end of the half-wafer approaching bracket, and approaching arms are provided on both sides and the rear side of the approaching base.

[0009] As a preferred technical solution, the approaching base is provided with a front and rear approaching slide rail, a left and right approaching slide rail, and an approaching synchronous wheel. An approaching synchronous belt is drivenly connected to the approaching synchronous wheel. The approaching synchronous belt is connected to the approaching arm on the rear side. The approaching arm on the rear side slides on the front and rear approaching slide rail. An approaching fixing plate is fixed on the approaching fixing plate. An approaching guide groove is provided on the approaching fixing plate. The approaching arms on both sides slide on the left and right approaching slide rail. An approaching guide wheel is installed on the approaching arm on both sides. The approaching guide wheel moves within the approaching guide groove.

[0010] As a preferred technical solution, the silicon wafer and adhesive strip assembly mechanism includes an adhesive strip cutting structure and a melt adhesive conveying structure. The adhesive strip cutting structure includes an adhesive strip cutting bracket, an adhesive strip clamp, and an adhesive strip cutter. An adhesive strip lateral movement module is mounted on the adhesive strip cutting bracket along the left-right direction. The adhesive strip clamp and the adhesive strip cutter are both connected to the drive end of the adhesive strip lateral movement module. The melt adhesive conveying structure includes a melt adhesive adhesion bracket and a melt adhesive platform. The melt adhesive adhesion bracket has two sets of melt adhesive front and rear modules arranged along the front-back direction. Each set of melt adhesive front and rear modules has a melt adhesive vertical movement slide rail on its drive end. A melt adhesive vertical movement slider is connected below the melt adhesive platform and slides on the melt adhesive vertical movement slide rail. A melt adhesive heating element is inserted inside the melt adhesive platform.

[0011] As a preferred technical solution, a rubber strip pulling plate and a rubber strip cutting plate are installed on the drive end of the rubber strip transverse module. A rubber strip front cylinder and a rubber strip front clamp are installed on the lower end of the rubber strip pulling plate. The drive end of the rubber strip front cylinder is hinged to the rubber strip clamp. The rubber strip clamp and the rubber strip front clamp hold the front end of the rubber strip. A rubber strip rear cylinder, a rubber strip cutting cylinder, and a rubber strip rear clamp are installed on the lower end of the rubber strip cutting plate. The rubber strip cutter is installed on the drive end of the rubber strip cutting cylinder. The drive end of the rubber strip rear cylinder and the rubber strip rear clamp hold the rear end of the rubber strip.

[0012] As a preferred technical solution, the welding wire cutting and placement mechanism includes two sets of welding wire feed frames, a welding wire traversing module, two sets of welding wire cutting components, a welding wire bidirectional clamping component, and a welding wire positioning bracket. The welding wire positioning bracket is located between the two sets of welding wire feed frames, and the two sets of welding wire cutting components are respectively located above the two ends of the welding wire positioning bracket. The welding wire bidirectional clamping component is installed on the drive end of the welding wire traversing module. The welding wire bidirectional clamping component moves back and forth between the two sets of welding wire cutting components and pulls the welding wire from the welding wire feed frames out and places it on the welding wire positioning bracket.

[0013] As a preferred technical solution, the bidirectional welding wire clamping assembly includes a welding wire clamping support and a welding wire movable shaft. A row of lower welding wire clamps and a row of upper welding wire clamps are installed on each side of the welding wire clamping support. The lower welding wire clamps are fixed on the welding wire clamping support. The welding wire clamping support has a support cavity inside. A support air pipe connector is connected to the upper end of the support cavity. The welding wire movable shaft moves laterally within the support cavity. The upper welding wire clamps are hinged to the end of the welding wire movable shaft.

[0014] As a preferred technical solution, the welding wire welding mechanism includes a welding wire transfer structure, a silicon wafer transfer structure, an infrared welding structure, a welding support structure, and a string welding unloading structure. The welding wire transfer structure picks up the welding wire and places it on the welding support structure. The silicon wafer transfer structure places the silicon wafer array connected by adhesive strips onto the welding support structure with the welding wire. The welding support structure moves the silicon wafer array and the welding wire together to the underside of the infrared welding structure for string welding. The string welding unloading structure removes the string-welded silicon wafers.

[0015] The beneficial effects of this utility model are as follows: It provides a BC battery string welding machine for half-cells, welding wires and adhesive strips. The entire process does not require manual intervention, saving resources and improving efficiency. The assembly line string welding process enables rapid production of BC battery strings that meet customer needs, and the quality is guaranteed. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of a BC battery string welding machine comprising half-cells, welding wires, and adhesive strips, as described in the embodiment.

[0018] Figure 2 This is a schematic diagram of the first overall structure of the silicon wafer handling mechanism described in the embodiment;

[0019] Figure 3 This is a schematic diagram of the second overall structure of the silicon wafer handling mechanism described in the embodiment;

[0020] Figure 4 This is a diagram showing the internal structure of the drying heating chamber described in the embodiment;

[0021] Figure 5 This is a schematic diagram of the overall structure of the silicon wafer flipping and turning mechanism described in the embodiment;

[0022] Figure 6 This is a schematic diagram of the structure of the flipping part described in the embodiment;

[0023] Figure 7 This is a schematic diagram of the translational striking part described in the embodiment;

[0024] Figure 8 This is a schematic diagram of the steering section described in the embodiment;

[0025] Figure 9 This is a schematic diagram of the structure of the converging portion as described in the embodiment;

[0026] Figure 10 This is a schematic diagram of the structure of the approaching base platform described in the embodiment;

[0027] Figure 11This is a schematic diagram of the overall structure of the silicon wafer and adhesive strip assembly mechanism described in the embodiment;

[0028] Figure 12 This is a schematic diagram of the adhesive strip cutting structure described in the embodiment;

[0029] Figure 13 This is a schematic diagram of the structure of the adhesive strip transverse movement module described in the embodiment;

[0030] Figure 14 This is a schematic diagram of the structure of the melt adhesive platform section described in the embodiment;

[0031] Figure 15 This is a schematic diagram of the overall structure of the welding wire cutting and placement mechanism described in the embodiment;

[0032] Figure 16 This is a first structural schematic diagram of the welding wire cutting assembly described in the embodiment;

[0033] Figure 17 This is a schematic diagram of the second structure of the welding wire cutting assembly described in the embodiment;

[0034] Figure 18 This is a schematic diagram of the bidirectional wire clamping assembly described in the embodiment;

[0035] Figure 19 This is a partial structural diagram of the welding wire positioning bracket described in the embodiment;

[0036] Figure 20 This is a schematic diagram of the upper structure of the welding wire positioning seat described in the embodiment;

[0037] Figure 21 This is a schematic diagram of the overall structure of the welding wire welding mechanism described in the embodiment;

[0038] Figure 22 This is a schematic diagram of the welding wire transfer structure described in the embodiment;

[0039] Figure 23 This is a schematic diagram of the structure of the welding wire transfer clamp described in the embodiment;

[0040] Figure 24 This is a partial structural diagram of the silicon wafer transfer structure described in the embodiment;

[0041] Figure 25 This is a schematic diagram of the infrared welding structure described in the embodiment;

[0042] Figure 26 This is a schematic diagram of the welding support structure described in the embodiment;

[0043] Figure 27 This is a partial structural diagram of the welding support structure described in the embodiment;

[0044] Figure 28 This is a schematic diagram of the wire bonding blanking structure described in the embodiment.

[0045] Figures 1 to 28 middle:

[0046] 1. Silicon wafer handling mechanism; 101. Half-wafer handling bracket; 102. Handling and translation module; 103. Drying and heating chamber; 104. Handling support plate; 105. Handling and lifting motor; 106. Handling and lifting cam; 107. Handling and lifting module; 108. Handling slats; 109. Handling and translation motor; 110. Handling and translation slide rail; 111. Handling and translation synchronous pulley; 112. Handling and translation support; 113. Handling and lifting guide plate; 114. Handling and lifting slide rail; 115. Handling air pipe connector; 116. Drying and heating rod; 117. Ventilation plate; 118. Drying and heating cooling fan; 119. Reflector;

[0047] 2. Silicon wafer flipping and steering mechanism; 201. Flipping bracket; 202. Translation and closing bracket; 203. Half-wafer steering X-axis module; 204. Half-wafer steering Z-axis module; 205. Half-wafer closing bracket; 206. Flipping shaft; 207. Flipping frame; 208. Translation strip; 209. Translation belt; 210. Translation and closing arm; 211. Translation and closing wheel; 212. Steering cylinder; 213. Closing base; 214. Closing arm; 215. Flipping motor; 216. Translation motor; 217. Translation synchronous pulley; 218. Translation transmission wheel; 219. 220. Translation air pipe connector; 221. Translation and engagement motor; 222. Translation and engagement synchronous pulley; 223. Half-piece steering frame; 224. Half-piece spacing motor; 225. Half-piece spacing synchronous pulley; 226. Half-piece approaching track motor; 227. Half-piece approaching track conveyor belt; 228. Half-piece positioning light source; 229. Half-piece positioning camera; 230. Half-piece signal reflector; 231. Approaching left and right slide rails; 232. Approaching synchronous pulley; 233. Approaching fixing plate; 234. Approaching guide groove; 235. Approaching guide wheel;

[0048] 3. Silicon wafer and adhesive strip assembly mechanism; 301. Adhesive strip cutting bracket; 302. Adhesive strip clamp; 303. Adhesive strip cutter; 304. Adhesive strip transverse transfer module; 305. Melt adhesive adhesion bracket; 306. Melt adhesive platform; 307. Melt adhesive vertical transfer slider; 308. Melt adhesive heating element; 309. Adhesive strip feeding tray; 310. Adhesive strip pulling plate; 311. Adhesive strip cutting plate; 312. Adhesive strip front cylinder; 313. Adhesive strip front clamp; 314. Adhesive strip Rear cylinder; 315. Adhesive strip cutting cylinder; 316. Adhesive strip rear clamp; 317. Adhesive strip transverse movement motor; 318. Adhesive strip transverse movement slide rail; 319. Adhesive strip transverse movement synchronous pulley; 320. Adhesive strip transverse movement synchronous belt; 321. Melting plate; 322. Melting vertical movement motor; 323. Melting lifting screw; 324. Melting lifting synchronous pulley; 325. Melting lifting synchronous belt; 326. Platform suction hole; 327. Platform air pipe connector;

[0049] 4. Welding wire cutting and placement mechanism; 401. Welding wire feed rack; 402. Welding wire lateral movement module; 403. Welding wire cutting assembly; 404. Welding wire bidirectional clamping assembly; 405. Welding wire positioning bracket; 406. Welding wire spool; 407. Tensioning frame; 408. Tensioning wheel; 409. Welding wire lifting seat; 410. Welding wire cutting support; 411. Welding wire cutting motor; 412. Welding wire cutting upright plate; 413. Welding wire cutting cam; 414. Welding wire cutter; 415. Welding wire cutting slider; 416. Welding wire clamping support; 417. Welding wire movable shaft; 418. Welding wire lower clamp; 419. Welding wire upper clamp; 420. Support air pipe connector; 421. Welding wire positioning motor; 422. Welding wire positioning synchronous pulley; 423. Welding wire positioning synchronous belt; 424. Welding wire positioning seat; 425. Welding wire positioning cylinder; 426. Welding wire positioning plate; 427. Welding wire positioning clamp;

[0050] 5. Welding wire welding mechanism; 501. Welding wire transfer structure; 502. Silicon wafer transfer structure; 503. Infrared welding structure; 504. Welding support structure; 505. String welding blanking structure; 506. Welding wire transfer horizontal module; 507. Welding wire transfer vertical module; 508. Welding wire transfer clamp; 509. Welding wire transfer cylinder; 510. Welding wire transfer limiting plate; 511. Welding wire transfer V-groove; 512. Welding wire transfer clamp; 513. Welding wire transfer sensor; 514. Welding wire transfer signal chip; 515. Silicon wafer transfer horizontal module; 516. Silicon wafer transfer vertical module; 517. 518. Silicon wafer transfer nozzle; 519. Infrared lifting module; 520. Infrared welding frame; 521. Air duct; 522. Exhaust fan; 523. Welding support front and rear modules; 524. Welding positioning module; 525. Welding support left and right motors; 526. Welding support long platform; 527. Welding support left and right synchronous pulleys; 528. Welding support left and right synchronous belts; 529. Welding support left and right slide rails; 530. Serial welding unloading horizontal movement module; 531. Serial welding unloading vertical movement module; 532. Serial welding unloading track; 533. Serial welding unloading nozzle; 534. Unloading suction hole; 535. Unloading air pipe. Detailed Implementation

[0051] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0052] like Figure 1 As shown in this embodiment, a BC battery string welding machine consisting of half wafers, welding wires, and adhesive strips includes a silicon wafer transport mechanism 1, a silicon wafer flipping and turning mechanism 2, a silicon wafer and adhesive strip assembly mechanism 3, a welding wire cutting and placing mechanism 4, and a welding wire welding mechanism 5. The silicon wafer transport mechanism 1 heats the laser-cut double half wafers. The silicon wafer flipping and turning mechanism 2 flips the dried double half wafers, separates them, turns them, and positions them for photographic inspection. The silicon wafer and adhesive strip assembly mechanism 3 cuts the stretched adhesive strips and uses heat melting to adhere the adhesive strips between the half wafers. The welding wire cutting and placing mechanism 4 pulls out and cuts the welding wires in odd and even rows on the left and right sides respectively, ensuring the position of the welding wires. The welding wire welding mechanism 5 places the cut welding wires below and places the battery strings bonded together with adhesive strips for string welding.

[0053] The following is a more detailed structural description of this embodiment.

[0054] like Figures 2 to 4As shown, the silicon wafer handling mechanism 1 includes a half-wafer handling bracket 101, a handling translation module 102, and a drying and heating chamber 103. A handling support plate 104 is fixed on the half-wafer handling bracket 101. The handling support plate 104 has handling and fixing suction holes distributed along the front-back direction. A handling lifting motor 105 is installed on the drive end of the handling translation module 102. The drive end of the handling lifting motor 105 is connected to a handling lifting cam 106. A handling lifting module 107 is arranged below the handling support plate. A handling strip 108 is connected to the upper end of the handling lifting module 107. The handling strip 108 is located in the middle of the handling support plate 104. The handling lifting cam 106 controls the up-and-down movement of the handling strip 108. The drying and heating chamber 103 is installed above the handling support plate 104.

[0055] Driven by the transport translation module 102, the transport slat 108 extends into the half-piece cutting machine to pull out the laser-cut double half-pieces. The transport lifting motor 105 controls the rise and fall of the transport slat 108 through the transport lifting cam 106, so that the double half-pieces change their front, middle and rear positions on the half-piece transport bracket 101. When in the middle position, the upper drying and heating chamber 103 dries and heats the laser-cut position between the double half-pieces. Then, when the transport slat 108 rises and moves backward, it moves to the rear of the transport support plate 104 to wait for subsequent transport.

[0056] The transport translation module 102 includes a transport translation motor 109 and a transport translation slide rail 110. The drive end of the transport translation motor 109 and one end of the half transport bracket 101 are both connected to transport translation synchronous pulleys 111. A transport translation synchronous belt is connected between the two transport translation synchronous pulleys 111. A transport translation support 112 is fixedly connected to the transport translation synchronous belt. The transport translation support 112 is slidably connected along the transport translation slide rail 110. The transport lifting motor 105 is fixed on the transport translation support 112.

[0057] When the half-wafer is moving, the transport lifting motor 105 controls the transport strip 108 to rise via the transport lifting cam 106, causing the half-wafer to leave the transport support plate 104. Then, the transport translation motor 109 drives the transport translation support 112 to move backward along the transport translation slide rail 110 via the rotating transport translation synchronous wheel 111 and transport translation synchronous belt. When the half-wafer moves to below the drying and heating chamber 103, the transport translation motor 109 stops, and the transport lifting motor 105 controls the transport strip 108 to descend, and the half-wafer falls onto the transport support plate 104. At this time, the transport fixing suction hole adsorbs and fixes the half-wafer. After the drying and heating are completed, the transport fixing suction hole releases the half-wafer, and the transport strip 108 rises and moves backward again. Then, the transport strip 108 moves down to below the transport support plate 104 and then returns to the front, repeating the above operation.

[0058] Both sides of the half-piece transport bracket 101 are provided with transport lifting guide plates 113. The upper end of the transport lifting guide plate 113 is connected to the transport strip 108. Both sides of the transport translation support 112 are fixed with transport lifting slide rails 114. The transport lifting guide plate 113 slides vertically on the transport lifting slide rail 114. When the transport strip 108 moves up and down, the transport lifting guide plate 113 moves up and down along the transport lifting slide rail 114 to form a guiding function.

[0059] The transport and lifting module 107 is provided with a cam movable hole. The transport and lifting cam 106 moves in the cam movable hole. During the lifting process, when the cam moves in the cam movable hole, it drives the transport strip 108 to move up and down.

[0060] The side of the transport support plate 104 is provided with a transport air pipe connector 115, which is connected to the transport fixing suction hole. The transport air pipe connector 115 is responsible for air supply and air release, and controls the transport fixing suction hole to suck and release the current half silicon wafer.

[0061] The drying and heating chamber 103 is fixed on both sides in the middle of the transport support plate 104. A drying and heating rod 116 is installed inside the drying and heating chamber 103. A vent plate 117 is provided above the drying and heating rod 116. A drying and heating cooling fan 118 is installed above the drying and heating chamber 103. The drying and heating rod 116 dries the laser-segmented area on the double half-plate below the drying and heating chamber 103, and the high-temperature gas is blown out by the drying and heating cooling fan 118 above.

[0062] A reflector 119 is provided above the rear end of the half-wafer transport bracket 101, and a transport signal sensor is provided below the rear end of the half-wafer transport bracket 101. When the two half-wafers that have been dried move above the transport signal sensor, they will block the reflector 119, and the subsequent mechanism will receive a signal that the half-wafer can be moved away.

[0063] like Figures 5 to 10As shown, the silicon wafer flipping and turning mechanism 2 includes a flipping bracket 201, a translational snap-fit ​​bracket 202, a half-wafer turning X-axis module 203, a half-wafer turning Z-axis module 204, and a half-wafer approach bracket 205. A flipping shaft 206 is rotatably connected to the flipping bracket 201, and a flipping frame 207 is fixed on the flipping shaft 206. Translational strips 208 are provided on both sides of the translational snap-fit ​​bracket 202, and translational belts 209 are movably mounted on the translational strips 208. Translational belts 209 are provided with translational adsorption holes. The two sides are provided with translational snap-fit ​​arms 210, and translational snap-fit ​​wheels 211 are installed on the translational snap-fit ​​arms 210. The half-piece steering Z-axis module 204 is installed on the drive end of the half-piece steering X-axis module 203. There are two steering cylinders 212 moving along the Y-axis direction on the drive end of the half-piece steering Z-axis module 204. The drive end of the steering cylinders 212 is connected to a steering suction cup. The end of the half-piece approach bracket 205 is provided with an approach base 213. Approach arms 214 are provided on both sides and the rear side of the approach base 213.

[0064] After the dried half-wafers enter the flipping bracket 201, the flipping shaft 206 rotates, flipping the half-wafers on the flipping frame 207 and sending them into the translational clamping bracket 202. Under the action of the translational adsorption holes of the translational belt 209, the half-wafers are held in place. Then, along the line of the translational strip 208, they are moved to the space between the translational clamping arms 210, releasing the half-wafers. The translational clamping arms 210 then position the half-wafers towards the center and move them to the rear, causing the half-wafers to turn. The X-axis module 203 controls the Z-axis module 204 to move the half-wafer to the top of the half-wafer. The Z-axis module 204 controls two steering cylinders 212 to move down and respectively pick up the half-wafer through the steering suction cup. After the steering cylinders 212 separate along the Y-axis, the two halves can be steered at the same time and then placed back on the half-wafer approach bracket 205. After the approach arm 214 closes, the position of the two halves is fixed, which is convenient for docking with the rear mechanism.

[0065] A flipping motor 215 is provided on one side of the flipping bracket 201. The drive end of the flipping motor 215 is connected to one end of the flipping shaft 206. A flipping suction hole is installed on the flipping frame 207. The flipping motor 215 controls the rotation of the flipping shaft 206. The flipping frame 207 picks up the half silicon wafer through the flipping suction hole and then flips it.

[0066] A translation motor 216 is installed at the lower end of the translational mating bracket 202. Translational synchronous pulleys 217 are installed at both the drive end of the translational motor 216 and the middle of the translational mating bracket 202. The translational synchronous pulleys 217 are connected by a belt drive. Translational transmission pulleys 218 are connected to the shafts on both sides of the translational synchronous pulleys 217. A translational belt 209 is driven by the translational transmission pulleys 218. A translational air pipe connector 219 is installed on the outer side of the translational slats 208. The gas transfer pipe connector 219 is connected to the translation adsorption hole through the translation plate 208. The translation and snapping bracket 202 is equipped with a translation and snapping motor 220 at its upper end. The drive end of the translation and snapping motor 220 is connected to a translation and snapping synchronous pulley 221. The translation and snapping synchronous pulley 221 is located outside the translation plate 208. The translation and snapping synchronous pulleys 221 are connected to each other by a translation and snapping synchronous belt. The translation and snapping arm 210 is fixed on the translation and snapping synchronous belt.

[0067] The translation motor 216 drives the translation belt 209 on the translation strip 208 through the mutual drive between the translation synchronous wheel 217 and the translation transmission wheel 218, which in turn drives the adsorbed half of the silicon wafer to move backward. The translation air pipe connector 219 controls the negative pressure of the translation adsorption hole to adsorb the half of the silicon wafer. The translation snapping motor 220, driven by the translation snapping synchronous wheel 221 and the translation snapping synchronous belt, controls the translation snapping arm 210 to move closer to the translation strip 208, stabilizing the position of the half of the silicon wafer in the middle.

[0068] A half-wafer steering frame 222 is mounted on the drive end of the half-wafer steering Z-axis module 204. A half-wafer pitch motor 223 and a half-wafer pitch synchronous pulley 224 are mounted on the half-wafer steering frame 222. The half-wafer pitch motor 223 is connected to the half-wafer pitch synchronous pulley 224. The half-wafer pitch synchronous pulleys 224 are connected by a half-wafer pitch synchronous belt 225. The steering cylinder 212 is fixed on the half-wafer pitch synchronous belt 225. The half-wafer steering Z-axis module 204 controls the half-wafer steering frame 222 to move down. After the two sets of steering suction cups pick up one half of the silicon wafer, the half-wafer pitch motor 223 pulls the two sets of steering cylinders 212 apart through the half-wafer pitch synchronous pulley 224 and the half-wafer pitch synchronous belt 225 to facilitate steering. After the steering cylinders 212 have steered the two half-wafers, they are brought back together. The half-wafer steering X-axis module 203 puts the steered half-wafers into the half-wafer bringing together bracket 205.

[0069] A half-piece approach bracket 205 is equipped with a half-piece approach track motor 226 at its lower end. The drive end of the half-piece approach track motor 226 is connected to a half-piece approach track synchronous pulley, and a half-piece approach track conveyor belt 227 is connected to the half-piece approach track synchronous pulley.

[0070] The half-piece approach bracket 205 is equipped with a half-piece positioning light source 228 and a half-piece signal sensor. The half-piece positioning camera 229 and the half-piece signal reflector 230 are set above the half-piece approach bracket 205.

[0071] The approaching base 213 is provided with approaching front and rear slide rails, approaching left and right slide rails 231 and approaching synchronous pulleys 232. The approaching synchronous pulleys 232 are connected to the approaching synchronous belt, which is connected to the approaching arm 214 on the rear side. The approaching arm 214 on the rear side slides on the approaching front and rear slide rails. The approaching fixing plate 233 is fixed on the approaching arm 214. The approaching fixing plate 233 is provided with approaching guide grooves 234. The approaching arms 214 on both sides slide on the approaching left and right slide rails 231. The approaching guide wheels 235 are installed on the approaching arms 214 on both sides and move within the approaching guide grooves 234.

[0072] The half-piece approaching track motor 226 moves the two halves backward through the half-piece approaching track synchronous wheel and the half-piece approaching track conveyor belt 227. After the half-piece signal sensor senses the movement, the half-piece positioning camera 229 performs defect detection on the two halves. Finally, when the approaching synchronous wheel 232 rotates, it drives the approaching synchronous belt to move, and the rear approaching arm 214 pulls back. At the same time, the approaching arms 214 on both sides are controlled to move towards the middle synchronously under the action of the approaching guide groove 234 and the approaching guide wheel 235, bringing the positions of the two halves together to prepare for the subsequent application of adhesive strips.

[0073] like Figures 11 to 14 As shown, the silicon wafer and adhesive strip assembly mechanism 3 includes an adhesive strip cutting structure and a melt adhesive conveying structure. The adhesive strip cutting structure includes an adhesive strip cutting bracket 301, an adhesive strip clamp 302, and an adhesive strip cutter 303. An adhesive strip transverse moving module 304 is installed on the adhesive strip cutting bracket 301 along the left-right direction. The adhesive strip clamp 302 and the adhesive strip cutter 303 are both connected to the drive end of the adhesive strip transverse moving module 304. The melt adhesive conveying structure includes a melt adhesive adhesion bracket 305 and a melt adhesive platform 306. The melt adhesive adhesion bracket 305 is provided with two sets of melt adhesive front and rear modules along the front and rear direction. A melt adhesive vertical moving slide rail is provided on the drive end of each set of melt adhesive front and rear modules. A melt adhesive vertical moving slider 307 is connected to the bottom of the melt adhesive platform 306. The melt adhesive vertical moving slider 307 slides on the melt adhesive vertical moving slide rail. A melt adhesive heating tube 308 is inserted inside the melt adhesive platform 306.

[0074] The adhesive strip clamp 302 clamps the front end of the adhesive strip and pulls it out above the melting platform 306. With the adhesive strip cutter 303 clamping the rear end of the adhesive strip first, it is smoothly lowered. Then the adhesive strip cutter 303 cuts the adhesive strip. The adhesive strip cutter 303 then retracts, freeing up the cut-off part of the adhesive strip. The adhesive strip clamp 302 then comes over to clamp the cut-off part and pulls it out. The above operation is repeated.

[0075] After the adhesive strip is accurately placed on the melting platform 306, the front and rear melting modules control the positions of the two sides of the melting platform 306 to interchange. When they meet in the middle, the height difference between the left and right sets of melting platforms 306 is made by the melting vertical slide rail and the melting vertical slide block 307 to prevent collision. The melting platform 306 with the adhesive strip moves backward to connect with half of the silicon wafer, so that there is an adhesive strip in the gap between the half of the silicon wafer. After the melting heating tube 308 heats up, the hot melt adhesive strip adheres the silicon wafer together.

[0076] One end of the rubber strip cutting bracket 301 is rotatably connected to the rubber strip feeding tray 309. The incoming rubber strip is wound on the rubber strip feeding tray 309, and the end is stretched out for segmented cutting.

[0077] The drive end of the adhesive strip traversing module 304 is equipped with an adhesive strip pulling plate 310 and an adhesive strip cutting plate 311. The lower end of the adhesive strip pulling plate 310 is equipped with an adhesive strip front cylinder 312 and an adhesive strip front clamp 313. The drive end of the adhesive strip front cylinder 312 is hinged to the adhesive strip chuck 302. The adhesive strip chuck 302 and the adhesive strip front clamp 313 clamp the front end of the adhesive strip. The lower end of the adhesive strip cutting plate 311 is equipped with an adhesive strip rear cylinder 314, an adhesive strip cutting cylinder 315, and an adhesive strip rear clamp 316. The adhesive strip cutter 303 is mounted on the drive end of the adhesive strip cutting cylinder 315. The drive end of the rubber strip rear cylinder 314 and the rubber strip rear clamp 316 clamp the rear end of the rubber strip. The rubber strip transverse module 304 is equipped with a rubber strip transverse motor 317 and a rubber strip transverse slide rail 318. The drive end of the rubber strip transverse motor 317 is connected to a rubber strip transverse synchronous pulley 319. The rubber strip transverse synchronous pulley 319 is connected to a rubber strip transverse synchronous belt 320. The rubber strip pull plate 310 and the rubber strip cutter 311 are respectively fixed on both sides of the rubber strip transverse synchronous belt 320. The rubber strip pull plate 310 and the rubber strip cutter 311 move towards each other or away from each other.

[0078] The rubber strip transverse motor 317 controls the movement of the rubber strip transverse synchronous belt 320. When the rubber strip pull plate 310 and the rubber strip cutting plate 311 approach each other, the rubber strip front cylinder 312 and the rubber strip front clamp 313 on the rubber strip pull plate 310 clamp and cut one end of the rubber strip that is attached to the rubber strip rear cylinder 314 and the rubber strip rear clamp 316. Then, the rubber strip pull plate 310 and the rubber strip cutting plate 311 separate from each other, and the rubber strip rear cylinder 314 and the rubber strip rear clamp 316 release the rubber strip, so that the rubber strip is held in place by the rubber strip front cylinder 312 and the rubber strip... The front clamp 313 is pulled out to the appropriate position. After the melting platform 306 is lifted, the adhesive strip can be placed on the melting platform 306. The adhesive strip cutting cylinder 315 controls the adhesive strip cutter 303 to move down and cut the adhesive strip. The front and rear are released, and the melting platform 306 descends to the horizontal height. At this time, the adhesive strip rear cylinder 314 and the adhesive strip rear clamp 316 clamp the cut adhesive strip. The adhesive strip pulling plate 310 and the adhesive strip cutting plate 311 move closer to each other again. The above operation is repeated to pull out the adhesive strip.

[0079] A melting platform 306 has a melting plate 321 fixed at its lower end. A melting vertical motor 322 is installed on the melting plate 321. The melting vertical motor 322 is driven by a melting lifting screw 323. A melting lifting nut is threaded onto the melting lifting screw 323. The melting lifting nut is fixed on the glue strip transverse module 304. Both the lower end of the melting lifting screw 323 and the drive end of the melting vertical motor 322 are equipped with melting lifting synchronous pulleys 324. A melting lifting synchronous belt 325 is driven between the melting lifting synchronous pulleys 324. The melting platform 306 is provided with several platform suction holes 326. A platform air pipe connector 327 is connected to the outside of the melting platform 306. The platform suction holes 326 are connected to the platform air pipe connector 327.

[0080] The two sets of front and rear modules on the molten adhesive adhesion bracket 305 move relative to each other, one in front and one behind, one on the left and one on the right, one high and one low, without causing contact or interference between them. The front and rear movement is controlled by the front and rear modules, the left and right movement is determined by the installation position of the front and rear modules, and the height is controlled by the molten adhesive vertical movement motor 322. The molten adhesive lifting screw 323 rotates, driving the entire molten adhesive stand plate 321 to move up and down along the molten adhesive vertical movement slide rail. When the adhesive strip reaches the molten adhesive platform 306, the negative pressure created by the platform's adsorption hole 326 fixes the position of the half silicon wafer, facilitating the connection of the molten adhesive strip after hot melting.

[0081] like Figures 15 to 20 As shown, the welding wire cutting and placing mechanism 4 includes two sets of welding wire feed frames 401, a welding wire transverse moving module 402, two sets of welding wire cutting components 403, a welding wire bidirectional clamping component 404, and a welding wire positioning bracket 405. The welding wire positioning bracket 405 is located between the two sets of welding wire feed frames 401. The two sets of welding wire cutting components 403 are respectively located above the two ends of the welding wire positioning bracket 405. The welding wire bidirectional clamping component 404 is installed on the drive end of the welding wire transverse moving module 402. The welding wire bidirectional clamping component 404 moves back and forth between the two sets of welding wire cutting components 403 and pulls the welding wire on the welding wire feed frame 401 out and places it on the welding wire positioning bracket 405.

[0082] Specifically, several sets of welding wire spools 406 are installed on the welding wire feeder 401. A tensioning frame 407 is set between the welding wire feeder 401 and the welding wire positioning bracket 405. A tensioning wheel 408 is installed on the tensioning frame 407. The wound welding wire is inside the welding wire spool 406. The welding wire spools 406 on the left and right sides are responsible for the output of the odd and even number of welding wires, respectively. The tensioning wheel 408 ensures that the pulled welding wire is in a straight line.

[0083] The welding wire transverse module 402 is equipped with three sets of welding wire lifting seats 409. Each welding wire lifting seat 409 is equipped with a welding wire lifting motor. The welding wire lifting motor controls the rotation of the welding wire lifting screw through the transmission of the synchronous pulley and the synchronous belt. Welding wire lifting nuts are installed on the rear side of the two sets of welding wire cutting components 403 and the one set of welding wire bidirectional clamping components 404. The welding wire lifting screw is connected to the welding wire lifting nut. The welding wire cutting components 403 and the welding wire bidirectional clamping components 404 move up and down along the welding wire lifting slide rail in the vertical direction.

[0084] Under the action of the welding wire lifting seat 409, when the left welding wire is stretched, the left welding wire cutting component 403, together with the welding wire bidirectional clamping component 404, puts the welding wire onto the welding wire positioning bracket 405 to keep the welding wire horizontal. Similarly, when the right welding wire is stretched, after the welding wire is put down, the welding wire cutting component 403 cuts the welding wire and stretches out a new welding wire on the other side. When the welding wire bidirectional clamping component 404 moves back and forth like this, it will continuously stretch out the welding wires on both sides.

[0085] The welding wire cutting assembly 403 includes a welding wire cutting support 410, a welding wire cutting motor 411, and a welding wire cutting upright plate 412. The welding wire cutting upright plate 412 moves vertically on the welding wire cutting support 410. A welding wire cutting guide hole is provided at the upper end of the welding wire cutting upright plate 412. A welding wire cutting cam 413 is installed at the drive end of the welding wire cutting motor 411. The welding wire cutting cam 413 moves within the welding wire cutting guide hole. A welding wire cutter 414 is installed at the lower end of the welding wire cutting upright plate 412. Welding wire cutting sliders 415 are installed on both sides of the welding wire cutting upright plate 412. Welding wire cutting slide rails are fixed on both sides of the welding wire cutting support 410. The welding wire cutting sliders 415 slide on the welding wire cutting slide rails.

[0086] After the welding wire is pulled out, the welding wire cutting motor 411 controls the welding wire cutting cam 413 to rotate, so that the welding wire cutting upright plate 412 presses down along the welding wire cutting slide rail from top to bottom, and the welding wire cutter 414 cuts the welding wire on the welding wire cutting support 410.

[0087] The welding wire bidirectional clamping assembly 404 includes a welding wire clamping support 416 and a welding wire movable shaft 417. A row of lower welding wire clamps 418 and a row of upper welding wire clamps 419 are installed on each side of the welding wire clamping support 416. The lower welding wire clamps 418 are fixed on the welding wire clamping support 416. The welding wire clamping support 416 has a support cavity inside. The upper end of the support cavity is connected to a support air pipe connector 420. The welding wire movable shaft 417 moves laterally in the support cavity. The upper welding wire clamps 419 are hinged to the end of the welding wire movable shaft 417.

[0088] Under the action of the welding wire traverse module 402, the welding wire clamping support 416 moves back and forth above the welding wire positioning bracket 405, clamping the welding wire from the left and right welding wire outlet brackets 401. The support gas pipe connector 420 controls the internal gas of the support cavity, allowing the welding wire movable shaft 417 to enter and exit. Through the hinge, the upper welding wire clamp 419 and the lower welding wire clamp 418 can clamp the end of the welding wire.

[0089] A welding wire positioning motor 421 and a welding wire positioning synchronous pulley 422 are installed at the end of the welding wire positioning bracket 405. The drive end of the welding wire positioning motor 421 is connected to the welding wire positioning synchronous pulley 422. The welding wire positioning synchronous pulley 422 is connected to a welding wire positioning synchronous belt 423. Several welding wire positioning seats 424 are fixedly connected to the welding wire positioning synchronous belt 423. The welding wire positioning seats 424 slide horizontally on the welding wire positioning bracket 405. A welding wire positioning cylinder 425 is installed at the upper end of the welding wire positioning seat 424. The drive end of the welding wire positioning cylinder 425 is vertically connected to a welding wire positioning plate 426. A welding wire positioning clamp 427 is hinged on the welding wire positioning seat 424. The lower end of the welding wire positioning clamp 427 is engaged with the welding wire positioning plate 426.

[0090] The welding wire positioning motor 421 controls the position of each group of welding wire positioning seats 424 through the welding wire positioning synchronous wheel 422 and the welding wire positioning synchronous belt 423 to meet the requirements of positioning and clamping the welding wire. When the upper welding wire bidirectional clamping assembly 404 pulls out the welding wire and places it on the welding wire positioning seat 424, the welding wire positioning cylinder 425 pushes the welding wire positioning plate 426 upward. The lower end of the welding wire positioning clamp 427 is hinged under the action of force, and the upper end of the welding wire positioning clamp 427 closes to clamp and fix the welding wire.

[0091] like Figures 21 to 28 As shown, the welding wire welding mechanism 5 includes a welding wire transfer structure 501, a silicon wafer transfer structure 502, an infrared welding structure 503, a welding support structure 504, and a string welding unloading structure 505. The welding wire transfer structure 501 picks up the welding wire and places it on the welding support structure 504. The silicon wafer transfer structure 502 places the silicon wafer array connected by adhesive strips onto the welding support structure 504 with the welding wire. The welding support structure 504 moves the silicon wafer array and the welding wire together to the underside of the infrared welding structure 503 for string welding. The string welding unloading structure 505 removes the string-welded silicon wafer.

[0092] Specifically, the welding wire transfer structure 501 includes a horizontal welding wire transfer module 506 and a vertical welding wire transfer module 507. The vertical welding wire transfer module 507 is mounted on the drive end of the horizontal welding wire transfer module 506. Several sets of welding wire transfer clamps 508 are mounted on the drive end of the vertical welding wire transfer module 507. A welding wire transfer cylinder 509 is mounted in the middle of the welding wire transfer clamp 508. The drive end of the welding wire transfer cylinder 509 is connected to a welding wire transfer limiting plate 510. The lower end of the transfer limiting plate 510 is provided with a wire transfer V-groove 511, and the lower end of the wire transfer clamp 508 is hinged with a wire transfer clamp 512. The upper end of the wire transfer clamp 512 is engaged in the wire transfer V-groove 511. A wire transfer sensor 513 is provided on one side of the wire transfer clamp 508, and a wire transfer signal piece 514 is installed on one side of the wire transfer limiting plate 510. The wire transfer signal piece 514 is connected to the wire transfer sensor 513.

[0093] The cut welding wire is taken out from the cutting and placing mechanism. The welding wire transfer cylinder 509 controls the welding wire transfer limiting plate 510 to move up and down, which changes the height of the welding wire transfer V-groove 511. The corresponding welding wire transfer clamp 512 can open or close to clamp the welding wire. The height of the welding wire transfer limiting plate 510 is known by the welding wire transfer sensor 513, so that the picking and placing of the welding wire is appropriate. Then, under the joint action of the welding wire transfer horizontal module 506 and the welding wire transfer vertical module 507, the welding wire is transferred to the welding support structure 504.

[0094] The silicon wafer transfer structure 502 includes a silicon wafer transfer horizontal module 515 and a silicon wafer transfer vertical module 516. The silicon wafer transfer vertical module 516 is mounted on the drive end of the silicon wafer transfer horizontal module 515. Several silicon wafer transfer nozzles 517 are distributed along the front-back direction on the drive end of the silicon wafer transfer vertical module 516.

[0095] After the welding wire is placed on the welding support structure 504, the silicon wafer transfer horizontal module 515 and the silicon wafer transfer vertical module 516 jointly control the transfer of the silicon wafer bonded by the adhesive strip to the welding support structure 504, and place the silicon wafer on the welding wire through the silicon wafer transfer nozzle 517.

[0096] The infrared welding structure 503 includes an infrared lifting module 518, the drive end of which is connected to an infrared welding frame 519. Several infrared lamps are distributed inside the infrared welding frame 519, and a duct 520 is installed on the upper end of the infrared welding frame 519. Several exhaust fans 521 are installed on the infrared welding frame 519.

[0097] During the string welding process, the infrared lifting module 518 controls the entire infrared welding frame 519 to move downwards, and uses infrared lamps to string weld the silicon wafer and welding wire together. After heating and string welding, the exhaust fan 521 is used for heat dissipation, and the air is exhausted from the duct 520 to facilitate subsequent processing.

[0098] The welding support structure 504 includes two sets of welding support front and rear modules 522. Each set of welding support front and rear modules 522 has a welding support left and right module installed at its drive end. A welding positioning module 523 is fixed on the drive end of the welding support left and right module. The welding support left and right module includes welding support left and right motors 524, welding support left and right screws, and welding support long platform 525. Welding support left and right synchronous pulleys 526 are installed at the drive end of the welding support left and right motors 524 and the end of the welding support left and right screws. Welding support left and right synchronous belts 527 are connected between the welding support left and right synchronous pulleys 526. Welding support left and right nuts are fixed on the welding support long platform 525. The welding support left and right nuts are threaded onto the welding support left and right screws. Welding support left and right sliders are fixed on the welding support front and rear modules 522. Welding support left and right slide rails 528 are fixed at the lower end of the welding support long platform 525. Welding support left and right sliders slide on the welding support left and right slide rails 528. The welding positioning module 523 is located on the welding support long platform 525.

[0099] Under the action of the two sets of welding support front and rear modules 522, the front welding positioning module 523 connects the welding wire and the silicon wafer, while the rear welding positioning module 523 is already in the infrared welding structure 503 for infrared welding without affecting efficiency. After the silicon wafer that has been welded is removed, the two sets of welding support front and rear modules 522 exchange positions. In the middle, the welding support left and right motors 524 on the welding support left and right modules control the rotation of the welding support left and right screws. Driven by the welding support left and right slide rails 528, the two sets of welding support long platforms 525 move outwards respectively, making room for the middle interconnection. The two sets of welding support long platforms 525 will not collide, realizing the exchange of front and rear positions, which speeds up the efficiency and process of the welding process.

[0100] The string welding unloading structure 505 includes a string welding unloading horizontal moving module 529, a string welding unloading vertical moving module 530, and a string welding unloading track 531. The string welding unloading vertical moving module 530 is installed on the drive end of the string welding unloading horizontal moving module 529. Several string welding unloading nozzles 532 are distributed along the front-back direction on the drive end of the string welding unloading vertical moving module 530. Several unloading adsorption holes 533 are distributed on the string welding unloading track 531. An unloading air pipe is installed on the side of the string welding unloading track 531, and the unloading air pipe is connected to the unloading adsorption holes 533.

[0101] After infrared string bonding, the silicon wafers are picked up by the string bonding unloading nozzle 532 controlled by the string bonding unloading horizontal movement module 529 and the string bonding unloading vertical movement module 530, and then placed on the string bonding unloading track 531. Under the negative pressure control of the unloading air pipe, the unloading suction hole 533 fixes the string bonded silicon wafers for output.

[0102] All modules involved in this application are linear modules.

[0103] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles applied thereto. Within the scope of the technology disclosed in this utility model, any variations or substitutions that are easily conceived by those skilled in the art should be covered within the protection scope of this utility model.

Claims

1. A BC battery string welding machine consisting of half-cells, welding wire, and adhesive strips, characterized in that, The system includes a silicon wafer handling mechanism, a silicon wafer flipping and turning mechanism, a silicon wafer and adhesive strip assembly mechanism, a welding wire cutting and placement mechanism, and a welding wire welding mechanism. The silicon wafer handling mechanism heats the laser-cut double halves. The silicon wafer flipping and turning mechanism flips the dried double halves, separates them, turns them, and positions them for photographic inspection. The silicon wafer and adhesive strip assembly mechanism cuts the stretched adhesive strips and uses heat melting to adhere the strips between the halves. The welding wire cutting and placement mechanism pulls out and cuts the welding wires in odd and even rows on the left and right sides respectively, ensuring the position of the welding wires. The welding wire welding mechanism places the cut welding wires below and places the battery strings bonded together with adhesive strips for string welding.

2. The BC battery string welding machine according to claim 1, comprising half-cells, welding wire, and adhesive strips, characterized in that, The silicon wafer handling mechanism includes a half-wafer handling bracket, a handling translation module, and a drying and heating chamber. A handling support plate is fixed on the half-wafer handling bracket. The handling support plate has handling and fixing suction holes distributed along the front-back direction. A handling lifting motor is installed on the drive end of the handling translation module. The drive end of the handling lifting motor is connected to a handling lifting cam. A handling lifting module is arranged below the handling support plate. A handling strip is connected to the upper end of the handling lifting module. The handling strip is located in the middle of the handling support plate. The handling lifting cam controls the up-and-down movement of the handling strip. The drying and heating chamber is installed above the handling support plate.

3. The BC battery string welding machine according to claim 2, comprising half-cells, welding wire, and adhesive strips, is characterized in that, The two sides of the drying and heating chamber are fixed in the middle of the transport support plate. A drying and heating rod is installed inside the drying and heating chamber. A vent plate is provided above the drying and heating rod. A drying and heating cooling fan is installed above the drying and heating chamber.

4. The BC battery string welding machine according to claim 1, comprising half-cells, welding wire, and adhesive strips, characterized in that, The silicon wafer flipping and turning mechanism includes a flipping bracket, a translational snap-fit ​​bracket, a half-wafer turning X-axis module, a half-wafer turning Z-axis module, and a half-wafer approaching bracket. A flipping shaft is rotatably connected to the flipping bracket, and a flipping frame is fixed on the flipping shaft. Translational slats are provided on both sides of the translational snap-fit ​​bracket, and translational belts are movable on the translational slats. Translational suction holes are provided on the translational belts. Translational snap-fit ​​arms are provided on both sides of the translational slats, and translational snap-fit ​​wheels are installed on the translational snap-fit ​​arms. The half-wafer turning Z-axis module is installed on the drive end of the half-wafer turning X-axis module. Two steering cylinders are movable along the Y-axis direction on the drive end of the half-wafer turning Z-axis module. A steering suction cup is connected to the drive end of the steering cylinders. An approaching base is provided at the end of the half-wafer approaching bracket, and approaching arms are provided on both sides and the rear side of the approaching base.

5. A BC battery string welding machine with half-cells, welding wire, and adhesive strips according to claim 4, characterized in that, The approaching base is provided with a front and rear approaching slide rail, a left and right approaching slide rail, and an approaching synchronous pulley. An approaching synchronous belt is driven to the approaching synchronous pulley. The approaching synchronous belt is connected to the approaching arm on the rear side. The approaching arm on the rear side slides on the front and rear approaching slide rail. An approaching fixing plate is fixed on the approaching fixing plate. An approaching guide groove is provided on the approaching fixing plate. The approaching arms on both sides slide on the left and right approaching slide rail. An approaching guide wheel is installed on the approaching arm on both sides. The approaching guide wheel moves within the approaching guide groove.

6. A BC battery string welding machine according to claim 1, comprising half-cells, welding wire, and adhesive strips, characterized in that, The silicon wafer and adhesive strip assembly mechanism includes an adhesive strip cutting structure and a melt adhesive conveying structure. The adhesive strip cutting structure includes an adhesive strip cutting bracket, an adhesive strip clamp, and an adhesive strip cutter. An adhesive strip lateral movement module is mounted on the adhesive strip cutting bracket along the left-right direction. The adhesive strip clamp and the adhesive strip cutter are both connected to the drive end of the adhesive strip lateral movement module. The melt adhesive conveying structure includes a melt adhesive adhesion bracket and a melt adhesive platform. The melt adhesive adhesion bracket has two sets of melt adhesive front and rear modules arranged along the front-back direction. Each set of melt adhesive front and rear modules has a melt adhesive vertical movement slide rail on its drive end. A melt adhesive vertical movement slider is connected below the melt adhesive platform and slides on the melt adhesive vertical movement slide rail. A melt adhesive heating element is inserted inside the melt adhesive platform.

7. A BC battery string welding machine with half-cells, welding wire, and adhesive strips according to claim 6, characterized in that, The drive end of the adhesive strip transverse module is equipped with an adhesive strip pull plate and an adhesive strip cutter plate. The lower end of the adhesive strip pull plate is equipped with an adhesive strip front cylinder and an adhesive strip front clamp. The drive end of the adhesive strip front cylinder is hinged to the adhesive strip chuck. The adhesive strip chuck and the adhesive strip front clamp clamp the front end of the adhesive strip. The lower end of the adhesive strip cutter plate is equipped with an adhesive strip rear cylinder, an adhesive strip cutting cylinder, and an adhesive strip rear clamp. The adhesive strip cutter is mounted on the drive end of the adhesive strip cutting cylinder. The drive end of the adhesive strip rear cylinder and the adhesive strip rear clamp clamp the rear end of the adhesive strip.

8. A BC battery string welding machine with half-cells, welding wire, and adhesive strips according to claim 1, characterized in that, The welding wire cutting and placement mechanism includes two sets of welding wire feed frames, a welding wire traversing module, two sets of welding wire cutting components, a welding wire bidirectional clamping component, and a welding wire positioning bracket. The welding wire positioning bracket is located between the two sets of welding wire feed frames. The two sets of welding wire cutting components are respectively located above the two ends of the welding wire positioning bracket. The welding wire bidirectional clamping component is installed on the drive end of the welding wire traversing module. The welding wire bidirectional clamping component moves back and forth between the two sets of welding wire cutting components and pulls the welding wire from the welding wire feed frame out and places it on the welding wire positioning bracket.

9. A BC battery string welding machine with half-cells, welding wire, and adhesive strips according to claim 8, characterized in that, The bidirectional wire clamping assembly includes a wire clamping support and a wire movable shaft. A row of lower wire clamps and a row of upper wire clamps are installed on each side of the wire clamping support. The lower wire clamps are fixed on the wire clamping support. The wire clamping support has a support cavity inside. A support air pipe connector is connected to the upper end of the support cavity. The wire movable shaft moves laterally within the support cavity. The upper wire clamps are hinged to the end of the wire movable shaft.

10. A BC battery string welding machine according to claim 1, comprising half-cells, welding wire, and adhesive strips, characterized in that, The welding wire welding mechanism includes a welding wire transfer structure, a silicon wafer transfer structure, an infrared welding structure, a welding support structure, and a string welding unloading structure. The welding wire transfer structure picks up the welding wire and places it on the welding support structure. The silicon wafer transfer structure places the silicon wafer array connected by adhesive strips onto the welding support structure with the welding wire. The welding support structure moves the silicon wafer array and the welding wire together to the underside of the infrared welding structure for string welding. The string welding unloading structure removes the string-welded silicon wafers.

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