Battery negative electrode substrate welding apparatus

Abstract

The application relates to a battery negative electrode substrate welding device, which comprises a feeding device for providing a negative electrode substrate, a first track, a first carrier capable of transmitting the negative electrode substrate along the first track, a clamping jaw arranged on one side of the first track and used for tearing off a film on the negative electrode substrate, a turnover device arranged on the left and right sides of the feeding device, a second track and a second carrier capable of transmitting a battery along the second track, a feeding station is arranged on the front side of the feeding device, the first track comprises two groups extending leftward and rightward from the feeding station, the turnover device is located on the rear side of the first track, the turnover device is used for assembling the negative electrode substrate to the battery and bending the negative electrode substrate, the second track is located on the rear side of the feeding device and extends leftward and rightward, a plurality of processing stations are arranged along the second track, a welding work head is arranged above the processing station, the welding device is compact in layout, double-line parallel operation can be realized, and the efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the technical field of battery processing, and specifically to a battery negative electrode substrate welding device. Background Technology

[0002] In battery manufacturing, electrically connecting the negative electrode substrate to the battery via welding is a crucial step. Existing automated welding equipment typically integrates multiple functional modules to achieve continuous production. These modules include a feeding device for providing the negative electrode substrate, a handling device for transporting and assembling the negative electrode substrate, a battery feeding device for providing the battery, and the core welding device. To further enhance automation and functional integration, some equipment also integrates a film-removing device for removing the film from the surface of the negative electrode substrate, and a bending device for bending the negative electrode substrate.

[0003] Although existing technologies aim to improve production efficiency through functional integration, they still have significant shortcomings in practical application and layout, mainly in the following aspects: 1. The equipment layout is cluttered and space utilization is low. Because multiple functional modules need to be accommodated, these modules are often arranged linearly inside the equipment, occupying a large amount of space and making the overall structure less compact and aesthetically pleasing. More importantly, it brings great difficulties to daily maintenance, upkeep, and troubleshooting. 2. Production efficiency is a bottleneck. Currently, most welding equipment adopts single-line operation, resulting in low production efficiency. Therefore, there is an urgent need for a welding equipment with a more rational and compact layout that can significantly improve production efficiency to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a new battery negative electrode substrate welding device to solve the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a battery negative electrode substrate welding device, comprising:

[0006] A feeding device is used to provide a negative electrode substrate, and a feeding station is provided on the front side of the feeding device;

[0007] A substrate transport mechanism includes a first track and a first carrier capable of transporting the negative electrode substrate along the first track. The first track includes two sets extending to the left and to the right from the loading station.

[0008] A film-tearing mechanism is disposed on one side of the first track, and the film-tearing mechanism includes grippers for tearing off the film attached to the negative electrode substrate;

[0009] The battery carrying mechanism comprises a second track and a second carrier capable of transporting the battery along the second track, the second track is located at the rear side of the feeding device and extends along the left-right direction, a plurality of processing stations are arranged along the second track, and the battery to be processed is arranged at the processing station;

[0010] The turnover device is arranged at the left and right sides of the feeding device, is located between the first track and the second track, and the processing station is located at the rear side of the turnover device. The turnover device comprises a turnover seat for assembling the negative substrate to the battery and capable of bending the negative substrate. The turnover seat is rotationally arranged around a rotation center line and reciprocally moves between the first track and the processing station.

[0011] The welding device comprises a welding work head arranged above the processing station.

[0012] The welding device further comprises a first transfer mechanism for transferring the negative substrate from the feeding device to the feeding station and a second transfer mechanism for transferring the negative substrate from the first track to the turnover seat.

[0013] In some embodiments, the negative substrate has a main plate and a connecting piece located at one side of the main plate and extending along the thickness direction of the main plate. The turnover seat is provided with a negative pressure adsorption surface for fixing the main plate. When the turnover device is in the feeding mode, the negative pressure adsorption surface faces upward and extends along the horizontal direction. When the turnover device is in the welding mode, the negative pressure adsorption surface extends along the vertical direction, the connecting piece extends along the horizontal direction, and the connecting piece is attached to the welding surface of the battery. When the turnover device is in the bending mode, the negative pressure adsorption surface moves downward toward the welding surface so that the main plate is folded above the connecting piece. The turnover device uses the fixing mode of adsorbing the side of the main plate away from the connecting piece through the turnover seat, so that the turnover seat can realize the adjustment of the state of the negative substrate for welding and the bending operation of the negative substrate through only two times of turnover. At the same time, the welding and bending of the connecting piece are carried out at the processing station, which can save equipment space and improve the processing efficiency of the turnover device.

[0014] Specifically, the main plate and the connecting piece form a bending edge portion at the joint. When the main plate is supported on the negative pressure adsorption surface, the bending edge portion extends along the rotation center line. In this way, the main plate can be bent around the bending edge portion relative to the connecting piece and folded with the connecting piece under the driving of the turnover seat in the bending mode.

[0015] In some embodiments, the processing station is provided with a fixing mechanism, which includes a vertically movable abutting member, the lower part of the abutting member is provided with an abutting head, the abutting head has a through slot in the vertical direction. In the welding mode of the turnover device, the abutting head abuts against the connecting sheet to fix the connecting sheet against the welding surface of the battery, and the circumferential slot wall of the through slot encloses a welding area above the connecting sheet. The provision of the through slot can provide positioning and guidance for the welding beam, and can also avoid the pollution caused by the welding slag generated during the welding process.

[0016] In some embodiments, the abutting member includes a slag suction hole opened on the slot wall of the through slot and a slag suction assembly connected with the slag suction hole and used for suction of the welding slag generated during the welding process. The provision of the slag suction hole and the slag suction assembly can improve the cleanliness during the welding process.

[0017] In some embodiments, the film tearing mechanism includes an upper jaw and a lower jaw, the upper jaw is located above the lower jaw and can move up and down; the film tearing mechanism includes a pressing member in sliding connection with the upper jaw in the vertical direction and an elastic member arranged between the upper jaw and the pressing member, the elastic member is used to provide the required force for driving the downward movement of the pressing member; when the film tearing mechanism is in the non-working mode, the lower end of the pressing member is located below the upper jaw. The device does not need to separately provide a pressing mechanism, and the pressing member can simultaneously complete the pressing and fixing of the product during the clamping of the film body.

[0018] Specifically, the upper jaw has a first clamping part, the lower jaw has a second clamping part, in the non-working mode, the first clamping part and the second clamping part are spaced apart in the vertical direction, the lower end of the pressing member is located below the first clamping part, and the first clamping part and the lower end of the pressing member have a first spacing in the vertical direction; in the working mode, the first clamping part and the second clamping part are close to each other to clamp the film body therebetween, the lower end of the pressing member abuts against the negative electrode substrate, and the first clamping part and the lower end of the pressing member have a second spacing smaller than the first spacing in the vertical direction.

[0019] In some embodiments, the first carrier is provided with a support table for supporting the negative electrode substrate, one side of the support table is provided with a slot, the film body has an attached part covering the surface of the negative electrode substrate and a protruding part protruding outward from one side of the negative electrode substrate; when the negative electrode substrate is located on the support table, the protruding part overhangs the slot opening; in the working mode, the lower jaw is inserted into the slot.

[0020] In some embodiments, a scanning device for scanning a code is further arranged above the first track. In some embodiments, the negative electrode substrate has a main plate and a connecting plate bent upward from the main plate, one side of the first track is provided with a flattening mechanism, the flattening mechanism comprises a first flattening piece and a second flattening piece capable of moving towards each other to clamp the connecting plate; the scanning device, the film tearing mechanism and the flattening mechanism are sequentially arranged along the transmission direction of the negative electrode substrate on the first track.

[0021] In some embodiments, two of the turnover devices are arranged on either side of the feeding device in the left-right direction, and the two turnover devices are distributed left and right, and one of the processing stations is arranged behind each of the turnover devices; a detection station is arranged on the movement path of the turnover seat, and a visual detection module is arranged at the detection station.

[0022] In some embodiments, the feeding device comprises a feeding bin for providing the tray loaded with the negative electrode substrate and a collecting bin for collecting the empty tray, the feeding bin and the collecting bin are distributed left and right, the upper part of the feeding bin is provided with a discharge port, and the upper part of the collecting bin is provided with a feeding port; the feeding device comprises a carrying platform reciprocally moving between the discharge port and the feeding port, a first carrying member for carrying the tray in the feeding bin to the carrying platform, and a second carrying member for carrying the empty tray on the carrying platform to the collecting bin; the lower part of the feeding bin is provided with a feeding track, and the lower part of the collecting bin is provided with a discharge track, the feeding track and the discharge track are parallel to each other and extend in the front-rear direction; the feeding track and the discharge track pass below the first track.

[0023] Due to the use of the above technical solutions, the battery negative electrode substrate welding equipment of the present application has the following advantages compared with the prior art: the processing flow of the negative electrode substrate of the battery negative electrode substrate welding equipment of the present application is as follows: the first transfer mechanism transfers the negative electrode substrate from the feeding device to the feeding station, and then transfers the negative electrode substrate to the front side of the turnover device along the first track to the left or to the right, the second transfer mechanism transfers the negative electrode substrate from the first track to the turnover device, the negative electrode substrate is assembled to the battery in the processing station on the rear side by the turnover device, the negative electrode substrate and the battery are welded and fixed by the welding work head, and then the turnover seat is used for bending treatment, and the treated battery can be directly transmitted along the second track. The movement trajectory of the negative electrode substrate is in the shape of "U", the path is clear, each device is also arranged along the movement trajectory, the layout is compact, the occupied space is reduced, and the material carrying distance is also shortened.

[0024] Meanwhile, starting from the loading station, the negative electrode substrates begin to be split, with one part of the negative electrode substrates being transported to the left and the other part to the right. The layout of the welding equipment is symmetrical from left to right. Regardless of whether the negative electrode substrates are transported to the left or to the right, they all undergo the above processing flow. That is, starting from the loading device, two symmetrical "U"-shaped negative electrode substrate processing trajectories are formed, enabling the equipment to operate in parallel on two lines and improving efficiency. Attached Figure Description

[0025] Appendix Figure 1 This is a schematic diagram of a battery negative electrode substrate welding device according to a specific embodiment of the present invention;

[0026] Appendix Figure 2 For the appendix Figure 1 A diagram from another perspective;

[0027] Appendix Figure 3 For the appendix Figure 1 Top view;

[0028] Appendix Figure 4 This is a schematic diagram of a negative electrode substrate according to a specific embodiment;

[0029] Appendix Figure 5 For the appendix Figure 4 A schematic diagram of the negative electrode substrate after the film has been removed;

[0030] Appendix Figure 6 This is a schematic diagram of a second carrier, a battery, and a negative electrode substrate according to a specific embodiment;

[0031] Appendix Figure 7 A schematic diagram showing the negative electrode substrate and the battery after welding and bending.

[0032] Appendix Figure 8 For the appendix Figure 1 A schematic diagram of the tilting device, fixing mechanism, and other mechanisms.

[0033] Appendix Figure 9 For the appendix Figure 8 Side view;

[0034] Appendix Figure 10 For the appendix Figure 8 A schematic diagram of the flipping device in its first state;

[0035] Appendix Figure 11 For the appendix Figure 10 Enlarged view of point A in the middle;

[0036] Appendix Figure 12 For the appendix Figure 11 A schematic diagram after removing the negative electrode substrate;

[0037] Appendix Figure 13 For the appendix Figure 10side view of the flipping device in the second state;

[0038] attached Figure 14 side view of the flipping device in the third state;

[0039] attached Figure 15 side view of the flipping device in the third state;

[0040] attached Figure 16 schematic diagram of the visual inspection module and the working head for welding;

[0041] attached Figure 17 schematic diagram of the fixing mechanism and the second carrier;

[0042] attached Figure 18 attached Figure 17 enlarged schematic diagram at B;

[0043] attached Figure 19 attached Figure 1 schematic diagram of the film tearing mechanism;

[0044] attached Figure 20 attached Figure 19 enlarged schematic diagram at C;

[0045] attached Figure 21 schematic diagram of the clamping jaw and the pressing member in the non-working mode;

[0046] attached Figure 22 schematic diagram of the clamping jaw and the pressing member in the working mode;

[0047] attached Figure 23 attached Figure 1 schematic diagram of the flattening mechanism;

[0048] attached Figure 24 attached Figure 23 schematic diagram of the partial structure;

[0049] attached Figure 25 attached Figure 1 schematic diagram of the feeding device;

[0050] attached Figure 26 schematic diagram of the first carrier of one specific embodiment;

[0051] attached Figure 27 attached Figure 26 enlarged schematic diagram at D;

[0052] attached Figure 28 attached Figure 26 enlarged schematic diagram at E;

[0053] 100, negative substrate; 110, main plate; 120, connecting sheet; 130, film pasting area; 140, bending edge part; 200, battery; 210, welding surface; 300, film body; 310, attached part; 320, protruding part; 400, tray; 101, feeding station; 102, processing station; 103, detection station; 104, temporary storage station; 1, feeding device; 11, feeding bin; 12, collecting bin; 13, bearing platform; 14, first carrying member; 15, second carrying member; 16, positioning assembly; 17, feeding track; 18, discharging track; 21, first track; 22, first carrier; 221, support table; 222, slot; 223, first limiting structure; 224, second limiting structure; 225, first positioning member; 226, second positioning member; 3, film tearing mechanism; 30, elastic member; 31, upper clamp; 311, first clamping part; 312, tooth groove; 32, lower clamp; 321, second clamping part; 322, fixed tooth; 33, pressing member; 331, pressing part; 332, connecting rod; 34, mounting seat; 35, cross beam; 36, support; 37, seat body; 4, turnover device; 41, turnover seat; 411, negative pressure adsorption surface; 42, positioning member; 43, pressing member; 44, moving frame; 45, lifting frame; 46, fixed frame; 51, second track; 52, second carrier; 53, welding work head; 54, reflow track; 61, first transfer mechanism; 62, second transfer mechanism; 7, fixing mechanism; 71, abutting member; 711, abutting head; 712, through slot; 72, rotating frame; 73, cleaning module; 81, scanning member; 82, leveling mechanism; 821, first leveling member; 822, second leveling member; 91, visual detection module; 92, recycling bin; 93, lower supporting member. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings, so that the advantages and characteristics of the present application are easier for those skilled in the art to understand. Obviously, the embodiments described in the present application are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0055] Reference Figures 1 to 3The battery negative electrode substrate welding device shown includes a feeding device 1, a substrate transmission mechanism, a turnover device 4, a battery carrying mechanism and a welding device, wherein the feeding device 1 is used to provide a negative electrode substrate 100, and the front side of the feeding device 1 is provided with a feeding station 101. The substrate transmission mechanism includes a first track 21 and a first carrier 22 capable of transmitting the negative electrode substrate 100 along the first track 21, and the first track 21 extends to the left and right sides from the feeding station 101. The battery carrying mechanism includes a second track 51 and a second carrier 52 capable of transmitting a battery 200 along the second track 51, and the second track 51 is located at the rear side of the feeding device 1 and extends in the left-right direction, and a plurality of processing stations 102 are arranged along the second track 51. The turnover device 4 is arranged on the left and right sides of the feeding device 1, and the turnover device 4 is located between the first track 21 and the second track 51 in the front-rear direction, and the processing station 102 is located at the rear side of the turnover device 4. The turnover device 4 includes a turnover seat 41 for assembling the negative electrode substrate 100 to the battery 200 at the processing station 102 and capable of bending the negative electrode substrate 100, and the turnover seat 41 is rotatably arranged around the rotation center line X1, and the turnover seat 41 reciprocates between the first track 21 and the processing station 102. The welding device includes a welding work head 53 located above the processing station 102.

[0056] In this embodiment, the welding device further includes a film tearing mechanism 3, and the film tearing mechanism 3 is arranged on one side of the first track 21, and the film tearing mechanism 3 includes a clamping jaw for tearing off the film 300 attached to the negative electrode substrate 100. The welding device further includes a first transfer mechanism 61 for transferring the negative electrode substrate 100 from the feeding device 1 to the feeding station 101, and a second transfer mechanism 62 for transferring the negative electrode substrate 100 from the first track 21 to the turnover seat 41.

[0057] Referring to Figure 3As shown, the battery negative electrode substrate welding device of the embodiment has the feeding device 1 arranged between the first track 21 and the second track 51 along the front-rear direction and between the two sets of turnover devices 4 along the left-right direction. When the device is working, the first transfer mechanism 61 obtains the negative electrode substrate 100 from the feeding device 1 and transfers the negative electrode substrate 100 to the feeding station 101 on the front side, and then the negative electrode substrate 100 at the feeding station 101 is divided into two groups, one of which is transmitted to the left along the first track 21, and the other is transmitted to the right. The film tearing mechanism 3 tears off the film 300 attached to the negative electrode substrate 100 during the transmission of the negative electrode substrate 100. When the negative electrode substrate 100 is transmitted to the front side of the turnover device 4, the second transfer mechanism 62 transfers the negative electrode substrate 100 to the turnover seat 41. The battery 200 is carried to the processing station 102 by the second carrier 52, the turnover seat 41 assembles the negative electrode substrate 100 to the battery 200 at the processing station 102, and then the welding work head 53 welds the negative electrode substrate 100 and the battery 200. After the welding is completed, the turnover seat 41 drives the negative electrode substrate 100 to bend by rotating, thereby completing the processing.

[0058] In the battery negative electrode substrate welding device of the embodiment, the first track 21, the turnover device 4, the processing station 102, etc. are symmetrically arranged along the left-right direction, so that the device structure is neat. The negative electrode substrate 100 is transferred and processed along the two "U"-shaped tracks symmetrically arranged along the left-right direction with the feeding device 1 as the starting point. The device layout is compact, and the device realizes double-line parallel operation, thereby improving the work efficiency.

[0059] In the embodiment, the negative electrode substrate 100 has a main plate 110 and a connecting piece 120 extending from the main plate 110, as shown in Figure 4 、 Figure 5 The connecting piece 120 is located on one side of the main plate 110 and extends along the thickness direction of the main plate 110. The main plate 110 and the connecting piece 120 form a bending edge portion 140 at the joint. When the negative electrode substrate 100 is connected to the battery 200, the connecting piece 120 is welded and fixed to the battery 200, and the main plate 110 is bent around the bending edge portion 140 relative to the connecting piece 120 and is folded with the connecting piece 120.

[0060] In the embodiment, the turnover device 4 has a feeding mode, a welding mode and a bending mode, and the turnover seat 41 has a first state, a second state and a third state capable of switching around the rotation center line X1. When the turnover device 4 is in the feeding mode, as shown in Figure 10 、 Figure 13As shown, the turnover seat 41 is in the first state, and the negative pressure adsorption surface 411 faces upward to receive the negative electrode substrate 100. Specifically, when the turnover seat 41 is in the first state, the negative pressure adsorption surface 411 faces upward to receive the negative electrode substrate 100, the main plate 110 is supported on the negative pressure adsorption surface 411, and the connecting plate 120 is located above the main plate 110. Specifically, when the turnover seat 41 is in the first state, the negative pressure adsorption surface 411 extends horizontally, so that the main plate 110 can be placed horizontally on the turnover seat 41. After the negative electrode substrate 100 is placed on the turnover seat 41, the main plate 110 is adsorbed and fixed from below by negative pressure.

[0061] In the embodiment, when the turnover device 4 is in the welding mode, the turnover seat 41 is in the second state, the negative pressure adsorption surface 411 extends in the up-down direction, the connecting plate 120 is converted to extend horizontally and is attached to the welding surface 210 of the battery 200, and the main plate 110 is located above the connecting plate 120. When the welding and bending integrated device is converted from the feeding mode to the welding mode, the turnover seat 41 is turned by a first angle, and the turnover seat 41 drives the main plate 110 to turn, thereby driving the connecting plate 120 to rotate, so that the connecting plate 120 is converted to extend horizontally and can be assembled to the welding surface 210 of the battery 200. In the welding mode, the welding work head 53 can weld the battery 200 and the negative electrode substrate 100 located in the processing station 102.

[0062] In the embodiment, when the turnover device 4 is in the bending mode, the connecting plate 120 is welded and fixed to the welding surface 210, the turnover seat 41 rotates around the rotation center line X1 and is converted from the second state to the third state, so that the negative pressure adsorption surface 411 moves downward to face the welding surface 210, so that the main plate 110 is bent relative to the connecting plate 120. Specifically, in the embodiment, when the integrated device is converted from the welding mode to the bending mode, the turnover seat 41 is turned by a second angle, and in the bending mode, the turnover seat 41 drives the main plate 110 to fold above the connecting plate 120. In the embodiment, the sum of the first angle and the second angle is 180°.

[0063] The turnover device 4 of the embodiment fixes the turnover seat 41 with the main plate 110, and rotates the main plate 110 through the turnover seat 41 to realize the adjustment of the state of the connecting piece 120. The turnover device 4 adopts the mode of adsorbing from the lower side to fix the main plate 110, which can reduce the damage to the main plate 110 and avoid interference in the subsequent bending operation. In the embodiment, the turnover seat 41 is driven to rotate around the rotation center line X1, so that the turnover seat 41 is converted from the first state to the second state, and then converted to the third state after the welding of the negative electrode substrate 100 and the battery 200 is completed. The state adjustment, assembly and bending of the negative electrode substrate 100 can be completed in sequence, the turnover seat 41 integrates multiple functions, and the turnover device does not need to separately set up an assembly mechanism and a bending mechanism, so that the device structure can be simplified. At the same time, after the welding of the battery 200 and the negative electrode substrate 100, the negative electrode substrate 100 can be directly bent in place, which can save space and improve the processing efficiency of the device.

[0064] In the embodiment, the rotation center line X1 extends horizontally, and when the turnover seat 41 is converted to the third state, the main plate 110 and the connecting piece 120 are folded in the up-down direction. Specifically, as shown in Figure 7 , Figure 15 In the embodiment, when the turnover seat 41 is converted to the third state, the negative pressure adsorption surface 411 faces downward, and the main plate 110 is folded above the connecting piece 120. The connecting piece 120 of the negative electrode substrate 100 in the embodiment is a metal sheet, and the main plate 110 includes a circuit board. The main plate 110 is larger in volume and heavier in mass than the connecting piece 120.

[0065] In the embodiment, when the main plate 110 is supported on the negative pressure adsorption surface 411, the bending edge portion 140 extends along the rotation center line X1, so that in the bending mode, the turnover seat 41 can drive the main plate 110 to bend relative to the connecting piece 120 around the bending edge portion 140. Specifically, one side of the negative pressure adsorption surface 411 is provided with a positioning piece 42, and one side of the main plate 110 supported on the negative pressure adsorption surface 411 abuts against the positioning piece 42, so as to realize the positioning of the main plate 110 and further realize the positioning of the negative electrode substrate 100. The rotation center line X1 and the negative pressure adsorption surface 411 and the rotation center line X1 and the positioning piece 42 have a preset interval, so that the bending edge portion 140 of the positioned negative electrode substrate 100 can extend along the rotation center line X1. In the embodiment, as shown in Figure 12 In the first state of the turnover seat 41, the positioning piece 42 extends upward from one side of the negative pressure adsorption surface 411, and specifically, the positioning piece 42 is used to abut against the side of the main plate 110 which is upwardly bent relative to the connecting piece 120. In other embodiments, the positioning piece 42 is arranged on other side portions, or the positioning piece 42 is provided with multiple positioning pieces for positioning multiple side portions of the main plate 110.

[0066] In this embodiment, the main plate 110 is at a right angle with the connecting piece 120, as shown in Figure 13 , Figure 14 When the turnover seat 41 is converted from the first state to the second state, the turnover seat 41 rotates 90° around the rotation center line X1, i.e. the first angle is 90°. As shown in Figure 14 , Figure 15 When the turnover seat 41 is converted from the second state to the third state, the turnover seat 41 continues to rotate 90° around the rotation center line X1, i.e. the second angle is 90°.

[0067] In this embodiment, as shown in Figure 11 , Figure 12 The turnover device 4 is also provided with a pressing piece 43, which can relatively approach the negative pressure adsorption surface 411 in a direction perpendicular to the negative pressure adsorption surface 411 to form clamping to the main plate 110. When the negative electrode substrate 100 is placed on the negative pressure adsorption surface 411, the pressing piece 43 can clamp and fix the main plate 110 from top to bottom. Under the cooperation of the negative pressure adsorption surface 411 and the pressing piece 43, the negative electrode substrate 100 can be stably fixed on the turnover seat 41, so as to avoid disturbance of the negative electrode substrate 100 during the turnover process.

[0068] In this embodiment, the pressing piece 43 can also be movably arranged along the extension direction of the negative pressure adsorption surface 411. Since the main plate 110 is folded above the connecting piece 120 when the turnover seat 41 is converted to the third state, the pressing piece 43 releases the pressing of the negative electrode substrate 100 and moves away from the negative electrode substrate 100 during the conversion of the turnover seat 41 from the second state to the third state, thereby forming an avoidance. In this embodiment, as shown in Figure 11 , Figure 12 In the direction of approaching the negative pressure adsorption surface 411, the thickness of the pressing piece 43 gradually decreases, and an inclined surface inclinedly extending towards the negative pressure adsorption surface 411 is formed on the side of the pressing piece 43 away from the negative pressure adsorption surface 411, thereby forming an avoidance. In this embodiment, the pressing piece 43 moves away from the negative pressure adsorption surface 411 only after the main plate 110 is bent to a preset angle towards the connecting piece 120, and the pressing piece 43 keeps fixing the main plate 110 within the preset angle. In this embodiment, after the main plate 110 is rotated 30° to 50° relative to the connecting piece 120 driven by the turnover seat 41, the remaining angle is greater than the included angle of the pressing surface of the pressing piece 43 and the back inclined surface, at which time the pressing piece 43 releases the clamping of the negative electrode substrate 100 and exits between the main plate 110 and the connecting piece 120.

[0069] In the embodiment, the turnover device 4 comprises a moving frame 44 capable of horizontal movement and a lifting frame 45 capable of up-down movement relative to the moving frame 44, and the turnover seat 41 is rotationally arranged on the lifting frame 45 about a rotation center line X1. After the negative substrate 100 is fixed on the turnover seat 41, the turnover seat 41 drives the negative substrate 100 to move to the processing station 102 by driving the moving frame 44 to move. During the transfer of the negative substrate 100, or after the transfer of the negative substrate 100 is completed, the turnover seat 41 completes the conversion to the second state, and the assembly of the negative substrate 100 is completed by the horizontal movement of the moving frame 44 and the up-down movement of the lifting frame 45. In the embodiment, the turnover device 4 further comprises a fixing frame 46 rotationally connected with the lifting frame 45 about a vertically extending rotation axis, and the turnover seat 41 is rotationally connected with the fixing frame 46. The angle of the turnover seat 41 can be adjusted by driving the fixing frame 46 to rotate about the rotation axis, and the angle of the negative substrate 100 is adjusted, so that the accurate assembly of the negative substrate 100 is realized.

[0070] In the embodiment, as shown in Figure 8 , In the embodiment, as shown in Figure 9 , In the embodiment, as shown in Figure 17 , In the embodiment, as shown in Figure 18 , In the welding mode, the abutting head 711 abuts against the connecting piece 120 to make the connecting piece 120 abut against and be fixed to the welding surface 210, so that the connecting piece 120 is fixed relative to the battery 200, and relative displacement between the connecting piece 120 and the battery 200 is avoided during welding. When welding, the through slot 712 constitutes a channel for the welding light beam to pass through, and the circumferential slot wall of the through slot 712 surrounds the to-be-welded area on the connecting piece 120, and the welding light beam performs welding on the connecting piece 120 and the battery 200 in the to-be-welded area. The through slot 712 is arranged to guide the welding light beam and form a barrier to prevent welding slag from polluting the negative substrate 100 or the battery 200. In the embodiment, the fixing mechanism 7 comprises a rotating frame 72 rotationally arranged about a rotation center line X2 extending in the vertical direction, and a plurality of abutting pieces 71 are circumferentially arranged on the rotating frame 72 and are movably connected with the rotating frame 72. The abutting head 711 will be polluted during welding, and therefore a plurality of abutting heads 711 are arranged to alternately perform the pressing operation.

[0071] In the embodiment, as shown in Figure 17As shown, the fixing mechanism 7 comprises a cleaning module 73 for cleaning the abutting head 711, the cleaning module 73 is arranged at one side of the rotating frame 72, the rotating frame 72 is rotatable around the rotation center line X2 extending in the vertical direction and is arranged in a horizontal movable manner, after the abutting head 711 participates in the welding operation, the abutting head 711 is driven to rotate and translate the rotating frame 72, so as to move away from the machining station 102 and enter the cleaning module 73 for cleaning.

[0072] In the embodiment, the cleaning module 73 comprises a shell, a brush roller rotatably arranged in the shell, and an air extraction assembly communicating with the inside of the shell. One side of the shell is provided with an opening for the abutting head 711 to extend into the inside, when the abutting head 711 extends into the shell from the opening, the abutting head 711 is cleaned by the brush roller, and the impurities cleaned are extracted by the air extraction assembly. In the embodiment, two brush rollers are rotatably arranged in the shell, the rotation directions of the two brush rollers are opposite, when the abutting head 711 is cleaned, the abutting head 711 extends between the two brush rollers, and the impurities attached to the abutting head 711 are cleaned by the two brush rollers.

[0073] In the embodiment, the abutting piece 71 comprises a slag suction hole (not shown in the figure) opened on the groove wall of the through groove 712 and a slag suction assembly communicating with the slag suction hole and used for suction of the welding slag generated in the welding process, so as to ensure the cleanliness of the working surface in the welding.

[0074] In the embodiment, referring to Figure 19 、 Figure 20As shown, the clamping jaw of the film tearing mechanism 3 includes an upper clamping jaw 31 and a lower clamping jaw 32, the upper clamping jaw 31 is located above the lower clamping jaw 32 and is arranged to move up and down. The film tearing mechanism 3 further includes a pressing member 33 which is in sliding connection with the upper clamping jaw 31 in the up-down direction and an elastic member 30 which is arranged between the upper clamping jaw 31 and the pressing member 33, the elastic member 30 is used to provide the force required to drive the pressing member 33 to move downward. When the film tearing mechanism 3 is in the non-working mode, the lower end of the pressing member 33 is located below the upper clamping jaw 31. When the upper clamping jaw 31 moves downward and cooperates with the lower clamping jaw 32 to clamp the film body 300, the pressing member 33 moves downward until it abuts against the negative electrode substrate 100, so that the pressing member 33 and the upper clamping jaw 31 slide relative to each other, and the elastic member 30 is compressed. During the process of the clamping jaw moving upward to tear off the film body 300, under the action of the elastic member 30, the pressing member 33 can maintain the state of abutting against the negative electrode substrate 100 and apply a downward force to the negative electrode substrate 100 to maintain the stability of the negative electrode substrate 100. Specifically, the upper clamping jaw 31 has a first clamping portion 311, and the lower clamping jaw 32 has a second clamping portion 321. In the non-working mode, the first clamping portion 311 and the second clamping portion 321 are spaced apart in the up-down direction, the lower end of the pressing member 33 is located below the first clamping portion 311, and the first clamping portion 311 and the lower end of the pressing member 33 have a first spacing in the up-down direction. In the non-working mode, as shown in FIG. 2, the clamping jaw is open, and the clamping jaw can be driven to move so that the film body 300 is inserted into the gap between the first clamping portion 311 and the second clamping portion 321. Figure 21 As shown, the first clamping portion 311 and the second clamping portion 321 are close to each other to clamp the film body 300 therebetween, the lower end of the pressing member 33 abuts against the negative electrode substrate 100, and the first clamping portion 311 and the lower end of the pressing member 33 have a second spacing in the up-down direction which is smaller than the first spacing. Figure 22 As shown, the first clamping portion 311 and the second clamping portion 321 are close to each other to clamp the film body 300 therebetween, the lower end of the pressing member 33 abuts against the negative electrode substrate 100, and the first clamping portion 311 and the lower end of the pressing member 33 have a second spacing in the up-down direction which is smaller than the first spacing.

[0075] Specifically, when the film-tearing mechanism 3 switches from the non-working mode to the working mode, the upper clamp 31 drives the holding member 33 to move downward. During this process, the lower end of the holding member 33 contacts the negative electrode substrate 100, and the holding member 33 stops moving after contact. Since there is a first gap between the first clamping part 311 and the lower end of the holding member 33, after the holding member 33 stops moving, there is still a certain distance between the first clamping part 311 and the film body 300 and the second clamping part 321, so the upper clamp 31 needs to be driven to continue moving downward. During the continued movement of the upper clamp 31, the holding member 33 slides relative to the upper clamp 31, causing the elastic member 30 to be compressed. When the first clamping part 311 and the second clamping part 321 come together and clamp the film 300, the film-tearing mechanism 3 switches to the working mode. In this state, under the drive of the elastic member 30, the lower end of the pressing member 33 presses against the negative electrode substrate 100 and applies a downward pressing force to the negative electrode substrate 100, so that the negative electrode substrate 100 is pressed and fixed. At this time, only the up and down movement of the gripper is needed to pull the film 300 and tear it off. During the film-tearing process, under the drive of the elastic member 30, the pressing member 33 slides relative to the upper clamp 31 and maintains the pressing and fixing of the negative electrode substrate 100, thereby maintaining the stability of the negative electrode substrate 100 during the film-tearing process.

[0076] In this embodiment, by providing a holding member 33, during the clamping process of the film 300, the holding member 33 simultaneously forms a pressing and fixing force on the negative electrode substrate 100. During the film removal process, the holding member 33 can maintain the pressing force on the negative electrode substrate 100, thereby maintaining the stability of the negative electrode substrate 100. The device does not require a separate holding mechanism to fix the negative electrode substrate 100, simplifying the device's structural design. In this embodiment, during the film removal process, when the distance between the first clamping part 311 and the lower end of the holding member 33 reaches the first gap, the upper clamp can drive the holding member 33 to move together, thereby causing the holding member 33 to disengage from the negative electrode substrate 100 and releasing the pressing and fixing force on the negative electrode substrate 100. Thus, during the film removal process, the film removal mechanism 3 can also automatically release the pressing and fixing force on the negative electrode substrate 100, simplifying the workflow and improving efficiency.

[0077] In this embodiment, see Figure 20 As shown, a mounting base 34 is fixedly provided on one side of the upper clamp 31. The mounting base 34 has a mounting hole. The clamping member 33 has a connecting rod 332 extending vertically and a clamping part 331 fixedly provided at the lower end of the connecting rod 332. The connecting rod 332 is slidably inserted into the mounting hole. In the working mode, the clamping part 331 abuts against the negative electrode substrate 100. In this embodiment, the elastic member 30 is provided between the clamping part 331 and the mounting base 34. Through the cooperation between the mounting hole and the connecting rod 332, a sliding connection is achieved while providing guidance for the sliding of the clamping member 33.

[0078] In the embodiment, referring to Figure 19 As shown in the figure, the film tearing mechanism 3 includes a horizontal beam 35, a bracket 36 slidingly arranged on the horizontal beam 35, and a seat 37 slidingly arranged on the bracket 36, the lower clamp 32 is fixedly connected with the seat 37, and the upper clamp 31 is slidingly connected with the seat 37. When the film tearing mechanism 3 is converted to the working mode, the bracket 36 is driven to move horizontally, and the seat 37 is driven to move up and down, so that the film body 300 enters between the first clamping part 311 and the second clamping part 321. When the film tearing operation is performed, the seat 37 moves upward and drives the upper clamp 31 and the lower clamp 32 to move upward synchronously. In the embodiment, the horizontal beam 35 is arranged above the first track 21, and the horizontal beam 35 extends in the front-rear direction.

[0079] In the embodiment, referring to Figure 21 As shown in the figure, in the non-working mode, the pressing part 331 is located between the first clamping part 311 and the second clamping part 321 in the up-down direction, and the film body 300 can enter between the first clamping part 311 and the second clamping part 321 from the gap between the pressing part 331 and the second clamping part 321.

[0080] In the embodiment, referring to Figure 4 As shown in the figure, the film body 300 has an attached part 310 covering the upper surface of the negative electrode substrate 100 and a protruding part 320 protruding outward from one side of the negative electrode substrate 100, the first clamping part 311 and the second clamping part 321 clamp the protruding part 320, and the attached part 310 is torn from the negative electrode substrate 100 by pulling the protruding part 320. In the embodiment, the attached part 310 and the protruding part 320 have an intersection line, the first distance is greater than the maximum perpendicular distance from the edge of the attached part 310 to the intersection line, so that the pressing part 33 always abuts against the negative electrode substrate 100 before the film body 300 is completely torn off, and the stability of the negative electrode substrate 100 is maintained.

[0081] In the embodiment, the negative electrode substrate 100 has a film attaching area 130 covered by the film body 300 and a blank area not covered by the film body, and in the working mode, the pressing part 33 abuts against the blank area. Referring to Figure 4 As shown in the figure, except for the film attaching area 130, all are blank areas, and the pressing part 33 abuts against the blank area to avoid interference with the film tearing operation.

[0082] In the embodiment, referring to Figures 26 to 28As shown, the first carrier 22 is provided with a support table 221 for supporting the negative electrode substrate 100, and one side of the support table 221 is provided with a slot 222. When the negative electrode substrate 100 is located on the support table 221, the overhanging portion 320 of the film body 300 overhangs the slot of the slot 222. In the working mode, the lower clamp 32 is inserted into the slot 222. The provision of the slot 222 forms an avoidance, avoiding interference between the first carrier 22 and the lower clamp 32. At the same time, the slot 222 also guides and positions the lower clamp 32, so that the upper clamp 31 and the lower clamp 32 can accurately clamp the overhanging portion 320 of the film body 300.

[0083] In this embodiment, referring to Figure 27 As shown, the first carrier 22 includes a first limiting structure 223 and a second limiting structure 224 which are fixedly arranged. The first carrier 22 is provided with a first positioning member 225 which can relatively move away from and close to the first limiting structure 223 along a first direction, and a second positioning member 226 which can relatively move away from and close to the second limiting structure 224 along a second direction. The first direction and the second direction intersect. The first carrier 22 has a fixed state. When in the fixed state, the negative electrode substrate 100 is located on the support table 221, the first positioning member 225 closes to the first limiting structure 223 and clamps the negative electrode substrate 100 along the first direction, and the second positioning member 226 closes to the second limiting structure 224 and clamps the negative electrode substrate 100 along the second direction. In this embodiment, the first direction and the second direction are in the horizontal plane. Specifically, the first direction is the front-back direction, and the second direction is the left-right direction. The negative electrode substrate 100 can be maintained stable in the horizontal plane, and is fixed in the up-down direction by the pressing member 33 in the film tearing process, so as to form a three-directional fixation of the negative electrode substrate 100. In this embodiment, the first carrier 22 is provided with a first sliding groove extending along the first direction and a second sliding groove extending along the second direction. The first positioning member 225 is movably arranged in the first sliding groove, and the second positioning member 226 is movably arranged in the second sliding groove. The first sliding groove and the second sliding groove respectively provide a guide for the movement of the first positioning member 225 and the second positioning member 226. Specifically, the slot 222 constitutes the first sliding groove, and the first positioning member 225 is movably arranged in the slot 222. In the working mode, the first positioning member 225 moves to one side of the slot 222, and the lower clamp 32 is inserted into the slot 222 and located at the side of the first positioning member 225 away from the first limiting structure 223.

[0084] In this embodiment, the lower end of the pressing member 33 is provided with a buffer pad, i.e., the pressing portion 331 is provided with a buffer pad, so as to avoid damage to the negative electrode substrate 100 when the pressing portion 331 contacts the negative electrode substrate 100. In this embodiment, referring to Figure 20As shown, the first clamping part 311 of the upper clamp 31 is provided with a tooth groove 312, and the second clamping part 321 of the lower clamp 32 is provided with a fixing tooth 322 matched with the tooth groove 312. Through the meshing of the tooth groove 312 and the fixing tooth 322, the stability of the clamping jaw clamping the film body 300 is improved.

[0085] In the embodiment, referring to Figure 1 、 Figure 3 As shown, the upper side of the first track 21 is further provided with a scanning member 81 for scanning and identifying the negative substrate 100. One side of the first track 21 is provided with a flattening mechanism 82, referring to Figure 23 、 Figure 24 As shown, the flattening mechanism 82 includes a first flattening member 821 and a second flattening member 822 capable of being relatively close to each other to clamp the connecting piece 120. Referring to Figure 3 As shown, the scanning member 81, the film tearing mechanism 3 and the flattening mechanism 82 are sequentially arranged along the transmission direction of the negative substrate 100 on the first track 21. After the negative substrate 100 is transferred to the feeding station 101, it is transmitted along the first track 21, and in the transmission process, it is first scanned by the scanning member 81, then the film body 300 on the negative substrate 100 is torn off by the film tearing mechanism 3, and then the connecting piece 120 is clamped by the first flattening member 821 and the second flattening member 822 to flatten the connecting piece. In the embodiment, referring to Figure 3 As shown, the left and right sides of the feeding station 101 are respectively provided with a group of scanning members 81, film tearing mechanisms 3 and flattening mechanisms 82, and the two groups of scanning members 81, film tearing mechanisms 3 and flattening mechanisms 82 are symmetrically distributed along the left and right directions. In the embodiment, the first track 21 includes two groups arranged side by side in the front and back directions, which can improve the efficiency of providing the negative substrate 100 to the turnover device 4. In the embodiment, the first carrier 22 is provided with two supporting tables 221, and one first carrier 22 can carry two negative substrates 100. Correspondingly, each film tearing mechanism 3 is provided with two clamping jaws to synchronously tear the film of the two negative substrates 100 on the first carrier 22, and each flattening mechanism 82 is also provided with two groups of first flattening members 821 and second flattening members 822 to synchronously flatten the connecting pieces 120 of the two negative substrates 100.

[0086] In the embodiment, the end of the first track 21 is provided with a temporary storage station 104, and the first track 21 connects the feeding station 101 and the temporary storage station 104. The negative substrate 100 that has undergone scanning, film tearing and flattening can be temporarily stored in the temporary storage station 104 for subsequent taking by the second transfer mechanism 62.

[0087] In the embodiment, two turnover devices 4 are arranged on either side of the feeding device 1 in the left-right direction, and the two turnover devices 4 are distributed left and right. One processing station 102 is arranged behind each turnover device 4. The equipment is provided with four turnover devices 4, which can effectively improve the production rhythm. In the embodiment, the welding work head 53 can move left and right on the left and right sides of the feeding device 1, so that the welding work head 53 can reciprocate between the two processing stations 102. The welding work head 53 alternately welds the negative electrode substrate 100 and the battery 200 at the two processing stations 102.

[0088] In the embodiment, as shown in Figure 8 , Figure 9 and Figure 16 , a detection station 103 is arranged on the movement path of the turnover seat 41. A visual detection module 91 is arranged above the detection station 103. Before the negative electrode substrate 100 is assembled and welded, the visual detection module 91 is used to detect the positioning of the negative electrode substrate 100. According to the detection information, the negative electrode substrate 100 can be adjusted by the moving frame 44, the lifting frame 45, and the fixing frame 46, so that the subsequent operation can be accurately performed.

[0089] In the embodiment, as shown in Figure 25 , the feeding device 1 includes a feeding bin 11 for providing the tray 400 loaded with the negative electrode substrate 100 and a collecting bin 12 for collecting the empty tray. The feeding bin 11 and the collecting bin 12 are distributed left and right. The upper part of the feeding bin 11 is provided with a discharge port, and the upper part of the collecting bin 12 is provided with an inlet. The feeding device 1 includes a carrying platform 13 reciprocating between the discharge port and the inlet, a first carrying member 14 for carrying the tray 400 in the feeding bin 11 to the carrying platform 13, and a second carrying member 15 for carrying the empty tray on the carrying platform 13 to the collecting bin 12. The first transfer mechanism 61 obtains the negative electrode substrate 100 from the carrying platform 13. The carrying platform 13 is provided with a positioning assembly 16 for positioning the tray 400. The positioning assembly 16 can clamp the tray 400 along the circumference of the tray 400, so that the tray 400 is accurately positioned and can be maintained stably, thereby ensuring that the first transfer mechanism 61 can smoothly obtain the negative electrode substrate 100.

[0090] In the embodiment, the lower part of the feeding bin 11 is provided with a feeding track 17, and the lower part of the collecting bin 12 is provided with a discharge track 18. The feeding track 17 and the discharge track 18 are parallel to each other and extend in the front-rear direction. As shown in Figure 1 , the feeding track 17 and the discharge track 18 pass below the first track 21. The equipment provides the tray 400 to the feeding bin 11 from below and transports the empty tray away from below, thereby reasonably utilizing the space in the up-down direction and reducing the occupation of the planar space.

[0091] In the embodiment, as shown inFigures 1 to 3 As shown, the battery negative electrode substrate welding device comprises a reflow track 54 located at the rear side of the second track 51 and extending along the left-right direction, for reflowing the second carrier 52.

[0092] In this embodiment, referring to Figure 6 As shown, the battery 200 fixed on the second carrier 52 has one side portion overhanging on one side of the second carrier 52, and the welding surface is arranged on the side portion. In this embodiment, referring to Figure 9 As shown, a lower support 93 is arranged below the processing station 102, and the lower support 93 is arranged to move up and down. When the second carrier 52 carries the battery 200 to the processing station 102, the lower support 93 moves upward and abuts against the battery 200 in the overhanging state, thereby providing support for the battery 200 in the overhanging state, so that the battery 200 can maintain stability during subsequent negative electrode substrate 100 assembly, pressing by the abutting member 71, and welding operations. In this embodiment, a recovery bin 92 for recovering unqualified negative electrode substrates 100 is arranged between the first track 21 and the turnover device 4.

[0093] In summary, the battery negative electrode substrate welding device of this embodiment has a negative electrode substrate 100 processing flow as follows: the first transfer mechanism 61 transfers the negative electrode substrate 100 from the feeding device 1 to the feeding station 101, and then transmits the negative electrode substrate 100 to the front side of the turnover device 4 along the first track 21 or to the right or left, the second transfer mechanism 62 transfers the negative electrode substrate 100 from the first track 21 to the turnover device 4, the negative electrode substrate 100 is assembled on the battery 200 at the rear processing station 102 by the turnover device 4, welding connection is performed by the welding work head 53, and bending treatment is performed by the turnover seat 41. The movement trajectory of the negative electrode substrate 100 is in the shape of "U", the path is clear, and each device is also arranged along the movement trajectory, so the layout is compact, the floor area is reduced, and the material handling distance is shortened.

[0094] At the same time, starting from the feeding station 101, the negative electrode substrate 100 begins to be branched, a part of the negative electrode substrate 100 is transmitted to the left, and another part of the negative electrode substrate 100 is transmitted to the right. The layout of the welding device on the left and right is symmetrical, and whether the negative electrode substrate 100 transmitted to the left or the negative electrode substrate 100 transmitted to the right all undergoes the above-mentioned processing flow, i.e., starting from the feeding device 1, two "U"-shaped negative electrode substrate processing trajectories along the left-right direction are formed, the device realizes double-line parallel operation, and the efficiency is improved.

[0095] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable the person skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A battery negative electrode substrate welding device, characterized in that, include: A feeding device is used to provide a negative electrode substrate, and a feeding station is provided on the front side of the feeding device; A substrate transport mechanism includes a first track and a first carrier capable of transporting the negative electrode substrate along the first track. The first track includes two sets extending to the left and to the right from the loading station. A film-tearing mechanism is disposed on one side of the first track, and the film-tearing mechanism includes grippers for tearing off the film attached to the negative electrode substrate; A battery handling mechanism includes a second track and a second carrier capable of transporting the battery along the second track. The second track is located behind the loading device and extends in the left-right direction. Multiple processing stations are arranged along the second track, and the battery to be processed is placed at the processing station. The flipping device is provided on both sides of the feeding device. The flipping device is located between the first track and the second track, and the processing station is located behind the flipping device. The flipping device includes a flipping base for assembling the negative electrode substrate onto the battery and for bending the negative electrode substrate. The flipping base is rotatably arranged around a rotation center line and reciprocates between the first track and the processing station. The negative electrode substrate has a main board and a connecting piece located on one side of the main board and extending along the thickness direction of the main board. The flipping base has a negative pressure adsorption surface for fixing the main board. When the flipping device is in feeding mode, the negative pressure adsorption surface faces upward and extends horizontally. When the flipping device is in welding mode, the negative pressure adsorption surface extends vertically, the connecting piece extends horizontally, and the connecting piece is in contact with the welding surface of the battery. When the flipping device is in bending mode, the negative pressure adsorption surface moves downward toward the welding surface, so that the motherboard is gathered above the connecting piece; The welding apparatus includes a welding head located above the processing station; The welding equipment further includes a first transfer mechanism for transferring the negative electrode substrate from the feeding device to the feeding station and a second transfer mechanism for transferring the negative electrode substrate from the first track to the flipping seat.

2. The battery negative electrode substrate welding equipment according to claim 1, characterized in that: A bent edge is formed at the junction of the motherboard and the connecting piece. When the motherboard is supported on the negative pressure adsorption surface, the bent edge extends along the rotation center line. In the bending mode, the motherboard bends around the bent edge relative to the connecting piece and retracts into the connecting piece.

3. The battery negative electrode substrate welding equipment according to claim 1, characterized in that: The processing station is provided with a fixing mechanism, which includes a support member that can move up and down. The lower part of the support member is provided with a support head, and the support head has a through groove that runs through the vertical direction. In the welding mode of the flipping device, the abutment head presses the connecting piece against the welding surface of the battery, and the peripheral wall of the through groove encloses the area to be welded above the connecting piece.

4. The battery negative electrode substrate welding equipment according to claim 3, characterized in that: The abutment includes a slag suction hole formed on the wall of the through groove and a slag suction assembly connected to the slag suction hole and used to absorb welding slag.

5. The battery negative electrode substrate welding equipment according to claim 1, characterized in that: The gripper of the film-tearing mechanism includes an upper gripper and a lower gripper, wherein the upper gripper is located above the lower gripper and can move up and down; The film-tearing mechanism includes a pressing member that is slidably connected to the upper clamp in the vertical direction and an elastic member disposed between the upper clamp and the pressing member. The elastic member is used to provide the force required to drive the pressing member to move downward. When the film-tearing mechanism is in a non-working mode, the lower end of the pressing member is located below the upper clamp.

6. The battery negative electrode substrate welding equipment according to claim 5, characterized in that: The upper clamp has a first clamping portion, and the lower clamp has a second clamping portion. In the non-working mode, the first clamping portion and the second clamping portion are spaced apart in the vertical direction, the lower end of the pressing member is located below the first clamping portion, and the first clamping portion and the lower end of the pressing member have a first distance in the vertical direction. In the working mode, the first clamping portion and the second clamping portion are brought together to clamp the membrane between them, the lower end of the pressing member abuts against the negative electrode substrate, and the first clamping portion and the lower end of the pressing member have a second distance in the vertical direction that is smaller than the first distance.

7. The battery negative electrode substrate welding equipment according to claim 6, characterized in that: The first carrier is provided with a support platform for supporting the negative electrode substrate. A slot is provided on one side of the support platform. The membrane has an attachment portion covering the surface of the negative electrode substrate and a protruding portion extending outward from one side of the negative electrode substrate. When the negative electrode substrate is located on the support platform, the protruding portion extends out of the slot opening. In the working mode, the lower clamp is inserted into the slot.

8. The battery negative electrode substrate welding equipment according to claim 1, characterized in that: A scanning component for scanning is also provided above the first track; the negative electrode substrate has a main board and a connecting piece that bends upward from the main board; a leveling mechanism is provided on one side of the first track; the leveling mechanism includes a first leveling component and a second leveling component that can be brought together to clamp the connecting piece; the scanning component, the film-tearing mechanism and the leveling mechanism are arranged sequentially along the transmission direction of the negative electrode substrate on the first track.

9. The battery negative electrode substrate welding equipment according to claim 1, characterized in that: Two flipping devices are provided on either side of the feeding device in the left-right direction, and the two flipping devices are distributed left and right, with a processing station provided behind each flipping device; The movement path of the flipping seat is provided with a detection station, and a vision detection module is provided at the detection station.

10. The battery negative electrode substrate welding equipment according to claim 1, characterized in that: The feeding device includes a feeding bin for providing a tray containing the negative electrode substrate and a receiving bin for collecting empty trays. The feeding bin and the receiving bin are distributed left and right. The feeding bin has a discharge port at its upper part and the receiving bin has an inlet at its upper part. The feeding device includes a support platform that reciprocates between the discharge port and the inlet, a first transport component for transporting the tray in the feeding bin to the support platform, and a second transport component for transporting the empty tray on the support platform to the receiving bin. The lower part of the feeding hopper is provided with a feeding track, and the lower part of the receiving hopper is provided with a discharging track. The feeding track and the discharging track are parallel to each other and extend in the front-back direction; the feeding track and the discharging track pass under the first track.

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