Multi-grid welding machine

Abstract

A multi-grid string welding machine includes: a conveying mechanism, a cell conveying mechanism, and a press net positioning mechanism, wherein the conveying mechanism is used to convey the cell and the press net, the cell conveying mechanism is used to move the cell to the conveying station of the conveying mechanism, and the press net positioning mechanism is used to move the press net to the conveying station of the conveying mechanism, so that the positions of the press net and the cell remain relatively consistent. The present invention moves the cell and the press net to the conveying station of the conveying mechanism through the cell conveying mechanism and the press net positioning mechanism, and only needs to position the cell and the press net once, thereby improving production efficiency.

Description

Technical Field

[0001] The invention relates to a multi-grid string welding machine, belonging to the field of battery equipment. Background Art

[0002] The basic process of the string welding machine before welding is as follows: pull the welding tape, lay the first battery cell on the welding tape, pull a new welding tape on the first battery cell, lay the second battery cell on the new welding tape, pull a new welding tape on the second battery cell, repeat the above steps, and finally weld all the battery cells and welding tapes together to form a battery string. In order to ensure that the position of the pulled welding tape remains stable during the entire process, before welding, or before the next step of the entire battery string, it is necessary to press the welding tape on each battery cell with a pressing net to ensure that the position of the welding tape on the battery cell is accurate and stable, and to ensure the welding effect.

[0003] In traditional equipment, moving the second battery cell to the newly pulled solder ribbon and moving the pressing net to the already placed first battery cell are two actions, which are inefficient and require two positionings to ensure that the placement of both is accurate. Summary of the invention

[0004] The object of the present invention is to provide a multi-grid string welding machine with high production efficiency.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A multi-grid string welding machine comprises: a transport mechanism, a battery cell conveying mechanism and a screen pressing positioning mechanism, wherein the transport mechanism is used to transport battery cells and screen pressing, the battery cell conveying mechanism is used to move the battery cells to a transport station of the transport mechanism, and the screen pressing positioning mechanism is used to move the screen pressing to a transport station of the transport mechanism, so that the positions of the screen pressing and the battery cells remain relatively consistent.

[0007] As a further improved technical solution of the present invention, it also includes a press mesh conveying mechanism, and the press mesh conveying mechanism is used to move the press mesh to a positioning station of the press mesh positioning mechanism.

[0008] As a further improved technical solution of the present invention, the battery cell conveying mechanism includes a first conveyor belt for conveying the battery cells, the press mesh conveying mechanism includes a second conveyor belt for conveying the press mesh, and the first conveyor belt is located above the second conveyor belt.

[0009] As a further improved technical solution of the present invention, the press mesh conveying mechanism includes a vertical operating mechanism arranged below the press mesh positioning mechanism, and the vertical operating mechanism is used to transport the press mesh on the second conveyor belt upward to the positioning station of the press mesh positioning mechanism.

[0010] As a further improved technical solution of the present invention, the vertical operation mechanism includes a lifting drive member, a lifting guide member and a lifting platform, the lifting guide member is arranged in the vertical direction, the lifting platform is slidingly connected to the lifting guide member, and the lifting drive member is connected to and drives the lifting platform to move along the lifting guide member.

[0011] As a further improved technical solution of the present invention, the multi-grid string welding machine also includes a position detection mechanism, and the position detection mechanism is used to detect the position of the battery cell.

[0012] As a further improved technical solution of the present invention, the press mesh conveying mechanism includes a vertical operating mechanism arranged below the press mesh positioning mechanism, and the vertical operating mechanism is used to transport the press mesh on the second conveyor belt upward to the positioning station of the press mesh positioning mechanism.

[0013] As a further improved technical solution of the present invention, the press mesh positioning mechanism includes a positioning drive device and a first press mesh conveying device, the first press mesh conveying device is used to clamp the press mesh, and the positioning drive device is connected to and drives the first press mesh conveying device to move toward the conveying station of the conveying mechanism.

[0014] As a further improved technical solution of the present invention, the positioning drive device includes a driving member and a guide member, the guide member is arranged toward the transporting station of the transport mechanism, the first pressing mesh transport device is slidably connected to the guide member, and the driving member is connected to and drives the first pressing mesh transport device to move along the guide member.

[0015] As a further improved technical solution of the present invention, the transport mechanism includes a vacuum suction cup for transporting the battery cell and a second press mesh transport device for transporting the press mesh, and the positions of the vacuum suction cup and the second press mesh transport device are relatively consistent.

[0016] As a further improved technical solution of the present invention, the transport mechanism also includes a robot that simultaneously transfers the vacuum suction cup and the second mesh pressing transport device, and the vacuum suction cup and the second mesh pressing transport device are connected to the mobile end of the robot.

[0017] Compared with the prior art, the present invention moves the battery cells and the press net to the transporting station of the transporting mechanism through the battery cell conveying mechanism and the press net positioning mechanism, and only needs to position the battery cells and the press net once, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a multi-grid string welding machine according to the present invention.

[0019] Figure 2 For Figure 1 An enlarged view of the circled portion of the multi-grid stringer shown.

[0020] Figure 3 For Figure 1 Left side view of lift assembly shown.

[0021] Figure 4 For Figure 1 Front view of lift assembly shown.

[0022] Figure 5 For Figure 1 Right side view of lift assembly shown.

[0023] Figure 6 For Figure 1 A schematic diagram of the first screen pressing and handling device is shown.

[0024] Figure 7 For Figure 1 A schematic diagram showing the first screen pressing and handling device in an open state.

[0025] Figure 8 For Figure 1 The schematic diagram shows that the first pressing mesh handling device is in a clamping state. DETAILED DESCRIPTION

[0026] Please refer to Figures 1 to 8 As shown, the present invention discloses a multi-grid string welding machine, which includes: a cell conveying mechanism 100, a pressing mesh conveying mechanism 200, a pressing mesh positioning mechanism 300, a transport mechanism 400, and a position detection mechanism 600. For the convenience of description, this article is directed to Figure 1 The left is back, the right is front, and the up and down are up and down.

[0027] The cell conveying mechanism 100 is used to move the cell 1 to the transporting station of the transporting mechanism 400, and the screen pressing positioning mechanism 300 is used to move the screen pressing 2 to the transporting station of the transporting mechanism 400, so that the positions of the screen pressing 2 and the cell 1 remain relatively consistent. The screen pressing conveying mechanism 200 is used to move the screen pressing 2 to the positioning station of the screen pressing positioning mechanism 300. The position detection mechanism 600 detects the position of the cell 1 at the transporting station, and the final information is fed back to the transporting mechanism 400. The transporting mechanism 400 uses the cell 1 as a reference, and simultaneously transports the cell 1 and the screen pressing 2, and transfers the two to the battery string assembly (not shown), the cell 1 is placed on the newly pulled out welding ribbon, and the screen pressing 2 is pressed onto the previously laid cell. It should be noted here that the positioning station is the station where the screen pressing positioning mechanism 300 receives the screen pressing 2, and the transporting station is the station where the transporting mechanism 400 extracts the cell 1 and the screen pressing 2. The positions of the battery cell 1 and the pressing net 2 at the transport station are relatively consistent, and the transport mechanism 400 can directly extract the two at the transport station and directly transfer them to the battery string assembly. Therefore, the present invention moves the battery cell 1 to the transport station of the transport mechanism 400 through the battery cell conveying mechanism 100, and uses the position of the battery cell 1 as a reference to perform a transport positioning of the pressing net 2 through the pressing net positioning mechanism 300, so that the pressing net 2 arrives at the transport station and is relatively consistent with the position of the battery cell 1. Therefore, the transport mechanism 400 can directly transport the pressing net 2 and the battery cell 1 at the same time, thereby improving production efficiency. Preferably, the transport station is located at the end of the transport direction of the battery cell conveying mechanism 100. At this time, when the battery cell 1 is transported to the transport station, the battery cell conveying mechanism 100 stops conveying, and the battery cell 1 stops directly on the battery cell conveying mechanism 100, and the pressing net positioning mechanism 300 moves the pressing net 2 to the battery cell conveying mechanism 100 opposite to the battery cell 1.

[0028] The cell conveying mechanism 100 includes a first conveyor belt 101 for conveying the cell 1 and a first pulley 102 for driving the first conveyor belt 101 to operate, and the press net conveying mechanism 200 includes a second conveyor belt 201 for conveying the press net 2 and a second pulley 202 for driving the second conveyor belt 201 to operate. The first pulley 102 and the second pulley 202 each include a driving wheel and a driven wheel, and the first conveyor belt 101 / the second conveyor belt 201 are linked to the driving wheel and the driven wheel, and the driving wheel is driven by a motor, and the driven wheel is driven to rotate through the conveyor belt, thereby realizing the circulation of the conveyor belt, so that the cell 1 / press net 2 placed on the conveyor belt moves to the handling station.

[0029] When preparing a battery string assembly, the welding ribbon is pulled on the battery cell 1. The welding ribbon is longer than the battery cell 1, and its tail is exposed on the battery cell 1. A new battery cell 1 is laid on the welding ribbon, and the pressing net 2 is pressed on the previous battery cell 1, that is, the battery cell 1 under the welding ribbon, to compress the welding ribbon so that the relative positions of the welding ribbon and the battery cell 1 are fixed, ensuring that the welding ribbon is welded at a fixed position. Therefore, the present invention simultaneously transports the battery cell 1 and the pressing net 2, so that when the two are transferred to the battery string assembly at the same time, the battery cell 1 is pressed on the exposed welding ribbon, and the pressing net 2 is pressed on the previous battery cell. At this time, the relative position of the pressing net 2 and the battery cell 1 is that the pressing net 2 is in front and the battery cell 1 is in the back. Of course, in other embodiments, it is also possible that the pressing net 2 is in the back and the battery cell 1 is in the front, which can be achieved by adjusting the positional relationship and the conveying direction of each device accordingly. In this embodiment, only the positional relationship of the pressing net 2 in the back and the battery cell 1 in the front is described. Specifically, the first conveyor belt 101 and the second conveyor belt 201 are arranged in parallel and opposite to each other, and their conveying directions are opposite, that is, the battery cell 1 on the first conveyor belt 101 is conveyed toward the second conveyor belt 201, and the pressing net 2 on the second conveyor belt 201 is conveyed toward the first conveyor belt 101. At the same time, corresponding to the direction of the battery string assembly, the second conveyor belt 201 is in front and the first conveyor belt 101 is in the back. In this way, when the battery cell 1 and the pressing net 2 are transferred to the handling station accordingly, the pressing net 2 is in front and the battery cell 1 is in the back, which is convenient for the handling mechanism 400 to directly transport the two to the battery string assembly after extracting them. It should be noted here that in addition to being arranged in parallel and opposite to each other, the first conveyor belt 101 and the second conveyor belt 201 can also have other settings, as long as the conveyed battery cell 1 and the pressing net 2 can be conveyed to the handling station with the pressing net 2 in front and the battery cell 1 in the back.

[0030] Furthermore, the press mesh 2 is recycled in the process flow of the multi-grid string welding machine of the present invention. After the battery string assembly is welded at the welding station of the welding mechanism (not shown), the press mesh 2 will be moved away from the battery string assembly and transferred to the press mesh conveying mechanism 200, and then transferred to the positioning station via the press mesh conveying mechanism 200, and used on the next battery string assembly. Thus, the press mesh conveying mechanism 200 connects the welding station and the positioning station. In order to avoid the transport mechanism 400 and other mechanisms such as the welding mechanism (not shown) between the two stations, the first conveyor belt 101 is located above the second conveyor belt 201. That is, in the up and down direction, the second conveyor belt 201 is lower than the first conveyor belt 101, so that the second conveyor belt 201 can pass through each mechanism from below to realize the circulation of the press mesh 2 without interfering with the operation of other mechanisms, and reduce the space occupied by the equipment on the basis of satisfying the transmission of the press mesh 2.

[0031] Since the second conveyor belt 201 is lower than the first conveyor belt 101, when the press net 2 is conveyed from the second conveyor belt 201 to the positioning station opposite to the press net positioning mechanism 300, the press net 2 is below the positioning station. For this purpose, the press net conveying mechanism 200 includes a vertical operating mechanism 203 arranged below the press net positioning mechanism 300, and the vertical operating mechanism 203 is used to transport the press net 2 on the second conveyor belt 201 upward to the positioning station of the press net positioning mechanism 300.

[0032] The vertical operation mechanism 203 can use a motor or a cylinder to drive the movable mechanism for loading the press net 2 to move up and down in a circular motion, so as to continuously transfer the press net 2 from the second conveyor belt 201 to the positioning station. The vertical operation mechanism 203 is arranged at the loading station of the press net conveying mechanism 200, and the loading station is located below the positioning station, opposite to the positioning station, and the press net 2 is transported forward to the loading station via the press net conveying mechanism 200. The vertical operation mechanism 203 includes a lifting assembly 210, a limit assembly 220 and a positioning assembly 230. The lifting assembly 210 includes a lifting drive 211, a lifting guide 212 and a lifting platform 213. The lifting drive 211 can be a motor or a cylinder, and the lifting guide 212 can be a guide rail or a guide rod. The lifting guide 212 is arranged in the vertical direction, the lifting platform 213 is slidably connected to the lifting guide 212, and the lifting drive 211 is connected to and drives the lifting platform 213 to move along the lifting guide. The lifting platform 213 is at the loading station. After the screen press 2 is in place, the lifting drive member 211 drives the lifting platform 213 to lift the screen press 2, and pushes the screen press 2 away from the second conveyor belt 201 to the positioning station.

[0033] Furthermore, in order to ensure that the net press 2 reaches the loading station and can be lifted by the lifting platform 213, and to prevent the next net press 2 from interfering with the lifting action, the limit assembly 220 includes a first limiter 221 and a second limiter 222. The first limiter 221 is arranged at the end of the loading station of the net press conveying mechanism 200. When a net press 2 is conveyed to the loading station, the first limiter 221 limits the net press 2 from continuing to move forward. When the net press 2 is blocked by the first limiter 221, the net press 2 is just above the lifting platform 213. At this time, the lifting platform 213 is not higher than the conveying end surface of the second conveyor belt 140, so that the net press 2 is convenient for transportation on the second conveyor belt 140. It should be noted here that the end of the loading station is along the conveying direction of the second conveyor belt 201, beyond the loading station, that is, this position lags behind the loading station. When the press net 2 is conveyed on the second conveyor belt 201, it reaches the loading station and still has a tendency to move toward this position. The first limit member 221 hinders the press net 2 from continuing to move at this position to ensure that the press net 2 stays at the loading station, making it easier for the lifting assembly 210 to accurately lift the press net 10 at this position.

[0034] Preferably, the first limit member 221 adopts a proximity sensor, which is used to limit the continued forward transportation of the press net 2 on the one hand, and can detect whether there is a press net 2 in place on the other hand, so as to feed back the signal to the control system, and the system issues instructions to the lifting drive member 211 to ensure that it will only take action when there is a press net 2.

[0035] The second limiter 222 is arranged at the initial end of the feeding station of the press net conveying mechanism 200, and is used to limit the next press net 2 from continuing to move forward, so as to prevent it from hitting the lifting assembly 210 and affecting the lifting of the press net 2 at the feeding station by the lifting assembly 210. It should be noted here that the initial end of the feeding station is the position before the feeding station along the conveying direction of the second conveyor belt 201, that is, when the press net 2 is conveyed on the second conveyor belt 201, it first reaches this position and then moves toward the feeding station. When a press net 2 arrives at the feeding station, the lifting drive 211 drives the lifting platform 213 to move the press net 2 upward, and the next press net 10 is still being transported forward on the second conveyor belt 201. If it is not blocked, the next press net 10 may hit the lifting assembly 210. When the lifting assembly 210 lifts the first press net 10 and descends to prepare to lift the next press net 10, the next press net 10 that hits the lifting assembly 210 will prevent the lifting assembly 210 from returning to the initial position. Therefore, the second limiter 222 is set to limit the next press 2 to reach the loading station. Specifically, the second limiter 222 can be a baffle, a block, a lever or other mechanisms, as long as it can block the next press 10 after a press 10 reaches the loading station.

[0036] Specifically, the second limiting member 222 includes a limiting rod and a limiting rod drive. The limiting rod drive adopts a cylinder. The output end of the cylinder is provided with a limiting rod. When the previous pressing net 2 is in place, the cylinder drives the limiting rod to extend to stop the next pressing net 10.

[0037] Furthermore, the positioning assembly 230 is provided because when the press net 2 is lifted by the lifting assembly 210, after the lifting assembly 210 stops in place, the press net 2 will continue to rise due to inertia, and then fall due to loss of force; that is, if the press net 2 is not fixed, after the lifting assembly 210 lifts the press net 2 into place, the press net 2 will "jump", at which time, the position of the press net 2 may produce an uncorrectable offset, affecting subsequent use, so the press net 2 is temporarily fixed by the positioning assembly 230 to facilitate lifting. Specifically, the positioning assembly 230 includes a clamp 231 and a drive device 232; the drive device 232 is connected to and drives the clamp 231 to clamp or release the press net 2. Since the middle part of the press net 2 contains a welding hole, in order to reduce the equipment structure, preferably, the clamp 231 is inserted into the welding hole of the press net 2, and the clamp 231 is opened to support the press net 2, thereby achieving relative fixation of the position of the press net 2. Specifically, a through hole is opened on the lifting platform 213 for the clamp 231 to pass upward. After the clamp 231 passes through the through hole, it can just extend into the welding hole of the pressing net 2 that has been placed on the lifting platform 213. Then, the driving device 232 drives the clamp 231 to open, and the clamp 231 presses against the inner wall of the welding hole of the pressing net 2, thereby fixing the position of the pressing net 2 and ensuring that the position of the pressing net 2 and the lifting platform 213 remain relatively consistent, which makes the position of the pressing net 2 during transportation relatively stable, facilitates the final positioning, and thus facilitates subsequent use.

[0038] In this embodiment, the press net conveying mechanism 200 and the press net positioning mechanism 300 are located at different heights in the vertical direction. In other optional embodiments, the press net conveying mechanism 200 and the press net positioning mechanism 300 can also be located at the same horizontal line, thereby omitting the vertical operation mechanism 203. In some optional embodiments, the press net conveying mechanism 200 and the press net positioning mechanism 300 can also be integrated into one mechanism to directly transfer the press net 2 to the transport station of the transport mechanism 400.

[0039] The net pressing positioning mechanism 300 includes a positioning drive device 310 and a first net pressing transport device 320, wherein the first net pressing transport device 320 is used to clamp the net pressing 2, and the positioning drive device 310 is connected to and drives the first net pressing transport device 320 and the net pressing 2 clamped therein to move toward the transport station of the transport mechanism 400. Specifically, the positioning drive device 310 includes a driving member 311 and a guide member 312, wherein the guide member 312 is arranged toward the transport station of the transport mechanism 400, and the first net pressing transport device 320 is slidably connected to the guide member 312, and the driving member 311 is connected to and drives the first net pressing transport device 320 to move along the guide member 312. Preferably, the driving member 311 is a motor, and the guide member 312 is a guide rail. In some optional embodiments, the driving member 311 may also be a cylinder.

[0040] The first pressing net handling device 320 includes a mounting plate 510, a driving assembly 520, a connecting assembly 530 and at least one pair of clamping members used in conjunction with each other; wherein, the two clamping members in each pair are arranged on the mounting plate 510 at intervals and are slidably connected to the mounting plate 510, and the two clamping members in each pair are symmetrically connected on both sides of the connecting assembly 530, and the output end of the driving assembly 520 is connected to the connecting assembly 530, thereby, the driving assembly 520 can drive the two clamping members in each pair to move toward or away from each other through the connecting assembly 530.

[0041] The connecting assembly 530 includes a slide 531 and a connecting rod corresponding to the clamping member; the slide 531 is slidably connected to the mounting plate 510, the connecting rod is connected to the slide 531 and the corresponding clamping member, and the slide 531 is connected to the output end of the driving assembly 520.

[0042] In the optional technical solution of this embodiment, the clamping members are provided as a pair, namely the first clamping member 541 and the second clamping member 542; correspondingly, the connecting rods are provided as a pair, namely the first connecting rod 532 and the second connecting rod 533; the first end of the first connecting rod 532 is rotatably connected to the slide 531, and the second end is rotatably connected to the first clamping member 541; the first end of the second connecting rod 533 is rotatably connected to the slide 531, and the second end is rotatably connected to the second clamping member 542. Due to the arrangement of the slide 531, the first connecting rod 532, and the second connecting rod 533, the first clamping member 541 and the second clamping member 542 are symmetrical at both ends and move relative to each other. When the first clamping member 541 and the second clamping member 542 clamp the press net 2, they can symmetrically clamp the press net 2 so that the center of the press net 2 corresponds to the center of the slide 531. Therefore, when the first press net handling device 320 clamps the press net 2, it has a centering effect, ensuring that the position of the press net 2 clamped each time remains consistent, which is convenient for positioning. In an optional technical solution of this embodiment, the two ends of the first connecting rod 532 are connected to the slide 531 and the first clamping member 541 through a rotating shaft 550, and the two ends of the second connecting rod 533 are connected to the slide 531 and the second clamping member 542 through a rotating shaft 550.

[0043] Specifically, the connecting component 530 includes a slide 531 and at least one pair of connecting rods. When a pair of clamping members is provided, a pair of connecting rods is correspondingly provided, and the connecting rods are connected between the slide 531 and the clamping members. The output end of the driving component 520 is connected to the slide 531, and the slide 531 is slidably connected to the mounting plate 510 along the width direction of the mounting plate 510. Thus, the driving component 520 can drive the slide 531 to slide along the width direction (front and back direction) of the mounting plate 510, and the slide 531 drives the connecting rod to move, thereby driving the corresponding, paired clamping members to move closer to or away from each other through the pairs of connecting rods, so as to achieve clamping or release of the pressing net 2.

[0044] Preferably, the clamping member is provided as a pair, specifically a first clamping member 541 and a second clamping member 542. Accordingly, the first clamping member 541 is connected to the slide 531 via the first connecting rod 532, and the second clamping member 542 is connected to the slide 531 via the second connecting rod 533. In addition, the first clamping member 541 and the second clamping member 542 are symmetrically distributed on both sides of the slide 531, and the first connecting rod 532 and the second connecting rod 533 are symmetrically distributed on both sides of the slide 531. Thus, the slide 531 is arranged on the driving assembly 5 When moving along the mounting plate 510 under the action of 20, the first clamping member 541 and the second clamping member 542 can be synchronously driven by the first connecting rod 532 and the second connecting rod 533 to move toward each other (approach each other) or move away from each other (move away from each other), and the movement amount of the first clamping member 541 and the second clamping member 542 is equal, so that the first clamping member 541 and the second clamping member 542 can simultaneously achieve the clamping and release of the pressing net 2 and the centering effect of the pressing net 2, so as to improve the subsequent welding effect.

[0045] Furthermore, the first connecting rod 532 is connected to the slide 531 and the first clamping member 541 via the rotating shaft 550. Similarly, the second connecting rod 533 is connected to the slide 531 and the second clamping member 542 via the rotating shaft 550. Therefore, during the movement of the slide 531 along the mounting plate 510, the two ends of the first connecting rod 532 can rotate relative to the slide 531 and the first clamping member 541, and the two ends of the second connecting rod 533 can rotate relative to the slide 531 and the second clamping member 542, so as to drive the first clamping member 541 and the second clamping member 542 to move toward or away from each other through the first connecting rod 532 and the second connecting rod 533 respectively.

[0046] The transport mechanism 400 includes a vacuum suction cup 410 for transporting the battery cell 1 and a second press net transport device 420 for transporting the press net 2. The positions of the vacuum suction cup 410 and the second press net transport device 420 are relatively consistent, and they are arranged side by side above the battery cell 1 and the press net 2. The transport mechanism 400 also includes a robot 430 that simultaneously transfers the vacuum suction cup 410 and the second press net transport device 420. The vacuum suction cup 410 and the second press net transport device 420 are connected to the moving end of the robot 430. The robot 430 simultaneously transfers the vacuum suction cup 410 and the second press net transport device 420. After the battery cell 1 and the press net 2 are ready at the transport station, the robot 430 drives the vacuum suction cup 410 and the second press net transport device 420 to move to the transport station. The vacuum suction cup 410 corresponds to the battery cell 1, and the second pressing net handling device 420 corresponds to the pressing net 2. The robot 430 drives the vacuum suction cup 410 and the second pressing net handling device 420 to descend to extract the battery cell 1 and the pressing net 2, and then rise to transfer the two to the battery cell assembly. Since the relative positions of the battery cell 1 and the pressing net 2 are fixed, and the handling mechanism 400 extracts both at the same time, the relative positions of the vacuum suction cup 410 and the second pressing net handling device 420 are fixed. Preferably, one side of the second pressing net handling device 420 is fixedly connected to the vacuum suction cup 410. Therefore, in actual operation, the relative positions of the battery cell 1 and the pressing net 2 are adjusted based on the relative positions of the vacuum suction cup 410 and the second pressing net handling device 420. It should be noted here that the structure of the second pressing net handling device 420 is similar to that of the first pressing net handling device 320, which will not be elaborated here.

[0047] In order to ensure that the handling mechanism 400 accurately extracts the battery cell 1 and the pressing net 2, the present invention uses a position detection mechanism 600 to detect the position of the battery cell 1. Specifically, the position detection mechanism 600 includes a CCD camera, which detects the position of the battery cell 1 arriving at the handling station, confirms the position of the battery cell 1 by taking a photo, and transmits the information to the control system, which calculates the position and finally feeds back the information to the pressing net positioning mechanism 300 and the robot 430. The pressing net positioning mechanism 300 first adjusts the pressing net 2 to the required relative position, so that the relative position of the pressing net 2 and the battery cell 1 corresponds to the relative position of the second pressing net handling device 420 and the vacuum suction cup 410. After the relative position adjustment of the battery cell 1 and the pressing net 2 is completed, the robot 430 arrives at the handling station with the vacuum suction cup 410 and the second pressing net handling device 420 to extract the battery cell 1 and the pressing net 2 respectively.

[0048] The multi-grid string welding machine also includes a backlight source 610 disposed below the transport station, and the backlight source 610 assists the CCD camera to take pictures, thereby more accurately confirming the position of the battery cell 1. It should be noted here that the backlight source 610 adopts the existing technology and will not be elaborated here.

[0049] The working process of the multi-grid string welding machine is as follows: the cell 1 is sent to the transport station of the transport mechanism 400 via the cell conveying mechanism 100, and the press net 2 is sent to the positioning station of the press net positioning mechanism 300 via the press net conveying mechanism 200. After the press net 2 is transported to the positioning station, the first press net transport device 320 clamps the press net 2, and the positioning drive device 310 connects and drives the first press net transport device 320 and the clamped press net 2 to move to the transport station. After arriving at the transport station, the first press net transport device 320 releases the press net 2. The transport mechanism 400 uses the cell 1 as a reference, transports the cell 1 and the press net 2 at the same time, and transfers the two to the cell string assembly, the cell 1 is placed on the welding strip, and the press net 2 is pressed on the previous cell.

[0050] The above embodiments are only used to illustrate the present invention but not to limit the technical solutions described in the present invention. The understanding of this specification should be based on the technical personnel in the relevant technical field. For example, the description of directions such as "front", "back", "left", "right", "up", and "down". Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in the field should understand that the technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the scope of the claims of the present invention.

Claims

1. A multi-grid string welding machine, characterized in that: include: A transport mechanism, the transport mechanism is used to transport the battery cell and the press net. The transport mechanism uses the battery cell as a reference, transports the battery cell and the press net at the same time, and transfers the two to the battery string assembly. The transport mechanism includes a vacuum suction cup for transporting the battery cell and a second press net transport device for transporting the press net. The positions of the vacuum suction cup and the second press net transport device are relatively consistent; A battery cell conveying mechanism, the battery cell conveying mechanism is used to move the battery cell to a transporting station of a transporting mechanism; as well as A press net positioning mechanism, which is used to move the press net to a transporting station of a transporting mechanism so that the positions of the press net and the battery sheet remain relatively consistent; The position detection mechanism includes a CCD camera, and the CCD camera detects the position of the battery cell arriving at the handling station, confirms the position of the battery cell by taking a photo, and feeds back the information to the pressing net positioning mechanism, and the pressing net positioning mechanism adjusts the pressing net to a desired relative position so that the relative position of the pressing net and the battery cell corresponds to the relative position of the second pressing net handling device and the vacuum suction cup.

2. The multi-grid string welding machine according to claim 1, characterized in that: It also includes a press mesh conveying mechanism, which is used to move the press mesh to a positioning station of the press mesh positioning mechanism.

3. The multi-grid string welding machine according to claim 2, characterized in that: The battery cell conveying mechanism includes a first conveyor belt for conveying the battery cells, the press mesh conveying mechanism includes a second conveyor belt for conveying the press mesh, and the first conveyor belt is located above the second conveyor belt.

4. The multi-grid string welding machine according to claim 3, characterized in that: The press mesh conveying mechanism comprises a vertical operating mechanism arranged below the press mesh positioning mechanism, and the vertical operating mechanism is used to transport the press mesh on the second conveyor belt upward to the positioning station of the press mesh positioning mechanism.

5. The multi-grid string welding machine according to claim 4, characterized in that: The vertical operation mechanism includes a lifting drive, a lifting guide and a lifting platform. The lifting guide is arranged in a vertical direction. The lifting platform is slidably connected to the lifting guide. The lifting drive is connected to and drives the lifting platform to move along the lifting guide.

6. The multi-grid string welding machine according to claim 1, characterized in that: The press mesh positioning mechanism comprises a positioning drive device and a first press mesh conveying device, wherein the first press mesh conveying device is used to clamp the press mesh, and the positioning drive device is connected to and drives the first press mesh conveying device to move toward the conveying station of the conveying mechanism.

7. The multi-grid string welding machine according to claim 6, characterized in that: The positioning drive device includes a driving member and a guiding member, the guiding member is arranged toward the transporting station of the transporting mechanism, the first pressing mesh transporting device is slidably connected to the guiding member, and the driving member is connected to and drives the first pressing mesh transporting device to move along the guiding member.

8. The multi-grid string welding machine according to claim 1, characterized in that: The transport mechanism also includes a robot that simultaneously transfers the vacuum suction cup and the second mesh pressing transport device, and the vacuum suction cup and the second mesh pressing transport device are connected to the mobile end of the robot.

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