A fully automatic spot welding machine for processing battery pack

Abstract

The application provides a full-automatic spot welding machine for processing a battery pack, which comprises a rack, a welding bearing assembly, a feeding assembly, an assembly limiting assembly, a nickel sheet feeding assembly, a battery conveying assembly, a battery assembling assembly, a connecting assembling assembly and a battery spot welding assembly. The application realizes full-automatic spot welding of the battery and the nickel sheet, reduces nickel sheet welding failure caused by manual spot welding, reduces the input of human resources, guarantees the welding quality of the battery pack, and prevents the battery pack in the storage box from being blocked by the cooperation between the battery conveying assemblies, the reciprocating movement of the storage box driven by a single power source when the battery is discharged, the cooperation between the battery assembling assemblies, the synchronous descending of the blocking plate driven by the pushing plate before the battery is pushed out of the limiting seat, and the synchronous pushing and unlimiting by a single power source.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack spot welding, and in particular to a full-automatic spot welding machine for processing battery packs. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. With the development of science and technology, lithium batteries have become mainstream. A lithium battery pack is composed of multiple lithium battery cells connected in a certain circuit method. These cells can be prismatic, cylindrical, or soft polymer batteries, and can be connected in series or parallel as needed to adjust the voltage and current output. Lithium battery packs are characterized by high efficiency, safety, and reliability, and are widely used in mobile power supplies, energy storage devices, electric vehicles, and other fields. During the production of lithium battery packs, relevant welding equipment is required to firmly connect the positive and negative electrodes of multiple lithium batteries to ensure that the battery pack has a long-lasting and reliable power output capability.

[0003] Existing spot welding mostly uses semi-automatic spot welding machines, which manually hold the welding head to weld the electrode sheets. This operation requires the position of the electrode sheets to be positioned first, otherwise it is easy for the electrode sheets to shift after welding due to human error. At the same time, before spot welding the battery pack, the existing semi-automatic spot welding machine needs to manually place the lithium battery and nickel sheet into the corresponding jig, fix the lithium battery and nickel sheet, and then spot weld them. This increases labor costs and adds many steps. Therefore, it is necessary to improve such a structure to overcome the above-mentioned shortcomings. Summary of the Invention

[0004] The object of the present invention is to provide a fully automatic spot welding machine for processing battery packs to solve the problems raised in the above background technology.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] A fully automatic spot welding machine for processing battery packs, comprising a frame and:

[0007] A welding bearing assembly, wherein the welding bearing assembly is arranged in the frame;

[0008] A feeding assembly is provided in the frame, and the welding bearing assembly is driven to move by the feeding assembly;

[0009] An assembly limiting component is provided on the frame and limits the welding bearing component;

[0010] A nickel sheet loading assembly is provided on the frame and drives the nickel sheet to move into the welding bearing assembly;

[0011] A battery conveying assembly is provided on the frame and drives the lithium batteries to move;

[0012] A battery assembly assembly is provided on the frame, and the battery assembly assembly transports the lithium battery to the welding support assembly;

[0013] A connecting assembly component is provided in the frame and can drive the welding bearing component to perform connecting assembly;

[0014] The battery spot welding assembly is located on both sides of the feeding assembly, and the battery spot welding assembly is used to spot weld the lithium battery and the nickel sheet.

[0015] The present invention is further configured such that the welding bearing assembly includes an upper cover plate with a limiting hole on the top, the upper cover plate is arranged on the frame, a magnet is arranged in the limiting hole, a limiting groove, a limiting groove 1 and a welding hole are arranged on the upper cover plate, and further includes a lower cover plate with a limiting column on the top, the lower cover plate is arranged on the frame, a magnet is arranged on the top of the limiting column, a limiting groove 2 and a limiting groove 3 are arranged on the top of the lower cover plate, a welding hole 1 is arranged in the lower cover plate, and further includes a plurality of fixed magnets respectively arranged in the upper cover plate and the lower cover plate.

[0016] The present invention is further configured such that the feeding assembly includes a first feeding mechanism arranged on both sides of the frame, a feeding mechanism is provided on one side of the first feeding mechanism, the feeding mechanism is perpendicular to the first feeding mechanism, a pushing member is provided on one side of the first feeding mechanism, a pushing plate is provided on the telescopic end of the pushing member, a feeding mechanism one is also provided on one side of the first feeding mechanism, the feeding mechanism one is arranged perpendicular to the first feeding mechanism, and a feeding mechanism two is also provided in the frame.

[0017] The present invention is further configured such that the assembly limit component includes an electric telescopic rod group, the electric telescopic rod group includes electric telescopic rod one, electric telescopic rod two, electric telescopic rod three and electric telescopic rod four, a limit block is provided on the top of the electric telescopic rod one, electric telescopic rod two, electric telescopic rod three and electric telescopic rod four, a lifting cylinder is provided on one side of the frame, a limit cylinder is provided on the driving end of the lifting cylinder, a limit plate is provided on the driving end of the limit cylinder, abutment plates are respectively provided on one side of the feeding mechanism and feeding mechanism one, and a through groove is provided on the abutment plate.

[0018] The present invention is further configured such that the nickel sheet loading assembly includes a nickel sheet box and a movable guide rail arranged in a frame, a rotary motor is provided on the movable guide rail, a rotary screw is provided on the rotating end of the rotary motor, a movable slider is provided for sliding in the movable guide rail, the movable slider and the rotary screw form a threaded fit, a loading cylinder is provided on the movable slider, the driving end of the loading cylinder is downwardly set, and a suction cup mechanism is provided at the bottom of the driving end of the loading cylinder, and the nickel sheet is sucked and fixed by the suction cup mechanism.

[0019] The present invention is further configured such that the battery conveying assembly includes a storage box and a driving motor, the storage box is arranged on the top of the frame through a connecting portion, the top of the storage box is provided with a feeding port, the storage box is provided with a guide plate, the bottom of the storage box is provided with a discharging port, a pushing port is provided on the side opposite to the discharging port of the storage box, and a limit spring is sleeved on the connecting portion of the storage box;

[0020] A driving motor is provided on one side of the storage box, a rotating end is provided in the driving motor, the driving motor is connected to one side of the rotating shaft, a transmission mechanism is provided on the rotating shaft, the rotational force of the rotating shaft is transmitted by the transmission mechanism, a rotating shaft is provided in the transmission mechanism, a cam is sleeved on the rotating shaft, a rotating disk is sleeved on the rotating shaft, a connecting column is provided on the rotating disk, a guide sleeve is provided on one side of the pushing port of the storage box, a discharging rod is slidably provided in the guide sleeve, a support column is provided on the discharging rod, an articulated push rod is hinged on the connecting column, and the other side of the articulated push rod is hinged on the support column, and a feeding mechanism three is provided on one side of the storage box.

[0021] The present invention is further configured as follows: the battery assembly component includes a limit seat arranged on the third feeding mechanism, a guide column is provided in the frame, a baffle plate is slidably provided on the guide column, a square groove is provided on the baffle plate, a pushing block with an inclined front end is provided on the baffle plate, a return spring is also provided on the guide column, a pushing cylinder is provided on the frame, the pushing cylinder is connected to the pushing plate, a group of pushing rods is provided on the pushing plate, a pushing portion with an inclined front end is provided at the bottom of the pushing plate, a guide sleeve is provided on one side of the baffle plate, and a rotary The rotating sleeve is provided with a feeding square groove on one side of the material guide sleeve, and a discharging square groove is provided on the rotating sleeve. A rotating motor 1 is connected to one side of the rotating sleeve. A material receiving column is rotatably provided in the rotating sleeve, and a material receiving cylinder is provided on the material receiving column. The material receiving column is connected to a rotating motor 2. A material guide sleeve assembly 1 is provided on one side of the rotating sleeve. The material guide sleeve assembly 1 includes a material guide sleeve 1, a material guide sleeve 2 and a material guide sleeve 3. A material guide sleeve assembly 2 is provided at the bottom of the material guide sleeve assembly 1, and the positions of the material guide sleeve assembly 2 correspond to the positions of the material guide sleeve 1, the material guide sleeve 2 and the material guide sleeve 3 respectively.

[0022] The present invention is further configured such that the connecting assembly component includes: a forward and backward moving mechanism arranged on the frame, the forward and backward moving mechanism can drive the articles to move forward and backward, the forward and backward moving mechanism is provided with an up and down moving mechanism, the up and down moving mechanism can drive the articles to move up and down, the up and down moving mechanism is provided with a left and right moving mechanism, the left and right moving mechanism can drive the articles to move left and right, the left and right moving mechanism is provided with a flipping motor, the flipping end of the flipping motor is provided with an electric clamp, an ejection cylinder is provided in the frame, the driving end of the ejection cylinder is provided with an ejection plate, and the ejection cylinder is used to eject the upper cover plate and the lower cover plate.

[0023] The present invention is further configured such that the battery spot welding assembly includes a forward and backward moving mechanism two symmetrically arranged on both sides of the feeding mechanism two, the forward and backward moving mechanism two can drive the article to move in the forward and backward direction, the forward and backward moving mechanism two is provided with an up and down moving mechanism two, the up and down moving mechanism two can drive the article to move in the up and down direction; the up and down moving mechanism two is provided with a moving cylinder, the driving end of the moving cylinder is arranged toward the feeding mechanism two, the driving end of the moving cylinder is provided with a welding head, the feeding mechanism two is provided with a fixed cylinder, the driving end of the fixed cylinder is provided with a fixed plate, and the upper cover plate and the lower cover plate are fixed by the fixed plate.

[0024] The advantages of the present invention are:

[0025] 1. The present invention realizes fully automated spot welding of batteries and nickel sheets, thereby greatly reducing the problem of nickel sheet welding errors caused by manual spot welding, while reducing the investment in human resources and ensuring the welding quality of the battery pack.

[0026] 2. The present invention realizes the coordinated work between battery conveying components and a single power source, so that the storage box can be driven to move back and forth while the batteries are being unloaded, thereby preventing the battery pack in the storage box from being blocked.

[0027] 3. The present invention sets up the battery assembly components to work together, so that before the battery is pushed out of the limit seat, the push plate can synchronously drive the baffle plate to descend, thereby releasing the limit of the push plate by the baffle plate. By setting a single power source, pushing and releasing the limit can be carried out simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of the fully automatic spot welding machine for processing battery packs proposed by the present invention.

[0029] Figure 2 It is a top view of the fully automatic spot welding machine for processing battery packs proposed by the present invention.

[0030] Figure 3 It is a structural schematic diagram of the nickel sheet box proposed by the present invention.

[0031] Figure 4 is the internal structure diagram of the storage box.

[0032] Figure 5 is one of the structure schematic diagrams of the material guiding sleeve assembly one.

[0033] Figure 6 is the second structure schematic diagram of the material guiding sleeve assembly one.

[0034] Figure 7 is the structure schematic diagram of the welding head.

[0035] Figure 8 is the structure schematic diagram of the front and back moving mechanism one.

[0036] Figure 9 is the structure schematic diagram of the Figure 1 enlarged view of A in the figure.

[0037] Figure 10 is the structure schematic diagram of the Figure 2 enlarged view of B in the figure.

[0038] Figure 11 is the structure schematic diagram of the Figure 4 enlarged view of C in the figure.

[0039] Figure 12 is the structure schematic diagram of the lower slide.

[0040] Numerical reference: rack 100;

[0041] upper cover plate 101, limiting hole 1011, lower cover plate 102, limiting column 1021, fixed magnet 103, limiting groove 104, limiting groove one 105, welding hole 106, limiting groove two 107, limiting groove three 108, welding hole one 109;

[0042] first feeding mechanism 201, feeding motor 2011, transmission shaft 2012, transmission belt 2013, supporting roller 2014, feeding mechanism 202, pushing piece 203, pushing plate 204, feeding mechanism one 205, feeding mechanism two 206;

[0043] electric telescopic rod group 301, lifting cylinder 302, limiting cylinder 303, limiting plate 304, abutting plate 3041, electric telescopic rod one 305, electric telescopic rod two 306, electric telescopic rod three 307, electric telescopic rod four 308;

[0044] nickel sheet box 401, moving guide rail 402, rotary motor 403, rotary lead screw 404, moving sliding block 405, feeding cylinder 406, suction disc mechanism 407;

[0045] Storage box 501, feed port 5011, guide plate 5012, discharge port 5013, push port 5014, limit spring 502, drive motor 503, rotating shaft 504, transmission mechanism 505, rotary shaft 506, cam 507, rotating disk 508, guide sleeve 509, discharge rod 510, hinged push rod 511, feeding mechanism 3 512, driving wheel 513, driven wheel 514, transmission belt 515;

[0046] Limit seat 601, guide column 602, baffle plate 603, square groove 6031, push block 6032, return spring 604, push cylinder 605, push plate 606, push rod 6061, push part 6062, guide sleeve 607, rotating sleeve 608, feed square groove 6081, discharge square groove 6082, rotary motor 1 609, receiving column 610, receiving barrel 6101, rotary motor 2 611, guide sleeve assembly 1 612, guide sleeve assembly 2 613, guide sleeve 1 614, guide sleeve 2 615, guide sleeve 3 616;

[0047] Front-back moving mechanism 701, up-down moving mechanism 702, left-right moving mechanism 703, flip motor 704, electric gripper 705, ejection cylinder 706, ejection plate 707, moving guide rail 708, moving drive motor 709, transmission screw 710, moving slider 711;

[0048] Front-back moving mechanism 2 801, up-down moving mechanism 2 802, moving cylinder 803, welding head 804, fixed cylinder 805, fixed plate 806;

[0049] The downhill slope 810 and the upper protective plate 820 . DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example 1

[0051] like Figure 1-11As shown, the present invention proposes a fully automatic spot welding machine for processing battery packs, including a frame 100, and also includes a welding bearing component, a feeding component, an assembly limiting component, a nickel sheet feeding component, a battery conveying component, a battery assembly component, a connection assembly component and a battery spot welding component. The welding bearing component is arranged on the frame 100, and a placement space for lithium batteries and nickel sheets is provided on the welding bearing component. The feeding component is arranged in the frame 100, and a placement space for the welding bearing component is provided on the feeding component. The welding bearing component is driven to move by the feeding component. The assembly limiting component is arranged on the frame 100, and the assembly limiting component is in contact with the welding bearing component. The welding bearing component is limited by the assembly limiting component. The nickel sheet loading assembly is arranged on the rack 100, and the nickel sheet loading assembly is located above the feeding assembly. The nickel sheet loading assembly drives the nickel sheet to move to the welding supporting assembly. The battery conveying assembly is arranged on the rack 100, and the battery conveying assembly drives the lithium battery to move. The battery assembly assembly is arranged on the rack 100, and the battery assembly assembly is in contact with the battery conveying assembly. The battery assembly assembly conveys the lithium battery to the welding supporting assembly. The connection assembly assembly is arranged in the rack 100, and the connection assembly assembly can drive the welding supporting assembly to perform connection assembly. The battery spot welding assembly is arranged on the rack 100, and the battery spot welding assembly is located on both sides of the feeding assembly. The battery spot welding assembly spot welds the lithium battery and the nickel sheet.

[0052] In this embodiment, the welding bearing assembly includes an upper cover plate 101, a lower cover plate 102 and a fixed magnet 103. The upper cover plate 101 is rectangular in shape and is arranged on the left side of the frame 100. A limiting hole 1011 is provided on the top of the upper cover plate 101. A magnet is provided in the limiting hole 1011. A limiting groove 104 and a limiting groove 105 are provided on the upper cover plate 101. The shape of the limiting groove 104 is consistent with the shape of the nickel sheet. The shape of the limiting groove 105 is adapted to the lithium battery. The upper cover 101 is provided with a welding hole 106. The shape of the lower cover 102 is rectangular. The lower cover 102 is provided on the frame 100. The top of the lower cover 102 is provided with a limiting column 1021. The top of the limiting column 1021 is provided with a magnet. The top of the lower cover 102 is provided with a limiting groove 2 107 and a limiting groove 3 108. The limiting groove 2 1 07 is adapted to the shape of the nickel sheet, the shape of the limiting groove three 108 is adapted to the lithium battery, and a welding hole one 109 is provided in the lower cover 102. The several fixed magnets 103 are respectively provided in the upper cover 101 and the lower cover 102, and the nickel sheet is fixed by the fixed magnet 103, thereby preventing the nickel sheet from falling under the influence of gravity when the lower cover 102 is flipped. It is worth noting that because the nickel sheet is a ferromagnetic metal, the nickel sheet can be adsorbed by the magnet. At the same time, the contact time between the magnet and the lithium battery is short, so the magnet will not affect the service life and quality of the lithium battery. At the same time, when the upper cover 101 is placed on the top of the lower cover 102, the limiting column 1021 of the lower cover 102 will be inserted into the limiting hole 1011 of the upper cover 101, and the magnet in the limiting hole 1011 and the magnet on the limiting column 1021 will produce an adsorption effect, thereby fixing the upper cover 101 and the lower cover 102.

[0053] In this embodiment, the feeding assembly includes a first feeding mechanism 201, a feeding mechanism 202, a pushing member 203, a pushing plate 204, a feeding mechanism 1 205 and a feeding mechanism 2 206. The first feeding mechanism 201 is provided in a pair, and the first feeding mechanism 201 is respectively arranged on both sides of the frame 100. The feeding mechanism 202 is arranged on one side of the first feeding mechanism. The feeding mechanism 202 is perpendicular to the first feeding mechanism 201, and the pushing member 203 is arranged on one side of the first feeding mechanism. The telescopic end of the pushing member 203 is arranged toward the first feeding mechanism, and one side of the pushing plate 204 is connected to the telescopic end of the pushing member 203, and the pushing plate 204 pushes the welding supporting assembly to move. The feeding mechanism 1 205 is arranged on one side of the first feeding mechanism, and the feeding mechanism 1 205 is arranged perpendicular to the first feeding mechanism. The upper cover plate 101 is transported by the feeding mechanism 1 205, and the feeding mechanism 2 206 is arranged in the frame 100, and the welding supporting assembly is driven to move by the feeding mechanism 2 206.

[0054] In this embodiment, the first feeding mechanism 201 includes a feeding motor 2011, a transmission shaft 2012, a conveyor belt 2013 and a support roller 2014. The feeding motor 2011 is provided with a pair, and the feeding motor 2011 is arranged on both sides of the frame 100. The rotating end of the feeding motor 2011 is arranged toward the inner side of the frame 100, the transmission shaft 2012 is connected to the rotating end of the feeding motor 2011, and the conveyor belt 2013 is provided with two pairs. The conveyor belts 2013 are respectively sleeved on the conveyor shaft 2012, and the conveyor belts 2013 rotate with the conveyor shaft 2012. The support rollers 2014 are rotatably set on the frame 100, and the tops of the support rollers 2014 are in contact with the inner sides of the conveyor belts 2013. The conveyor belts 2013 are supported by the support rollers 2014. It is worth noting that the structures of the feeding mechanism 202, feeding mechanism 1 205 and feeding mechanism 2 206 are the same as the structure of the first feeding mechanism 201.

[0055] In this embodiment, the assembly limit component includes an electric telescopic rod group 301, a lifting cylinder 302, a limit cylinder 303, a limit plate 304 and an abutment plate 3041. The electric telescopic rod group is arranged in the frame. The electric telescopic rod group 301 includes an electric telescopic rod 1 305, an electric telescopic rod 2 306, an electric telescopic rod 3 307 and an electric telescopic rod 4 308. The electric telescopic rod 1 305, the electric telescopic rod 2 306, the electric telescopic rod 3 307 and the electric telescopic rod 4 308 are provided with a limit block on the top. The electric telescopic rod 1 305 is located at the bottom of the first feeding mechanism 201. The electric telescopic rod 2 306 is provided with a pair. The electric telescopic rod 2 306 is respectively arranged at the bottom of the feeding mechanism 202 and the feeding mechanism 1 205. The electric telescopic rod 3 307 is arranged at the feeding mechanism 202. The bottom of the electric telescopic rod 4 308 is arranged at the bottom of the feeding mechanism 206, the lifting cylinder 302 is provided with a pair, the lifting cylinder 302 is arranged on one side of the frame 100, the driving end of the lifting cylinder 302 is arranged upward, the limiting cylinder 303 is arranged on the driving end of the lifting cylinder 302, the limiting cylinder 303 is provided with a pair, the driving ends of the limiting cylinder 303 are respectively arranged toward the feeding mechanism 202 and the feeding mechanism 1 205, the limiting plate 304 is arranged on the driving end of the limiting cylinder 303, the limiting plate 304 is respectively used to limit the lower cover plate 102 and the upper cover plate 101, the abutment plate 3041 is provided with a pair, the abutment plate 3041 is respectively arranged on one side of the feeding mechanism 202 and the feeding mechanism 1 205, and the abutment plate 3041 is provided with a through groove.

[0056] In this embodiment, the nickel sheet loading assembly includes a nickel sheet box 401, a movable guide rail 402, a rotary motor 403, a rotary screw 404, a movable slider 405, a loading cylinder 406 and a suction cup mechanism 407. The nickel sheet box 401 is provided with a pair, and the nickel sheet boxes 401 are symmetrically arranged in the frame 100. The nickel sheet box 401 is provided with a storage space for nickel sheets. The movable guide rail 402 is provided with a pair, and the movable guide rail 402 is arranged on the frame 100. The movable guide rail 402 is provided with a moving space. The rotary motor 403 is arranged on the movable guide rail 402, and the rotating end of the rotary motor 403 is facing It is arranged on the movable guide rail 402, one side of the rotary screw 404 is connected to the rotary end of the rotary motor 403, the movable slider 405 is slidably arranged in the movable guide rail 402, and a threaded hole is provided on the movable slider 405, and the threaded hole of the movable slider 405 forms a threaded fit with the rotary screw 404, the loading cylinder 406 is arranged on the movable slider 405, and the driving end of the loading cylinder 406 is arranged downward, and the suction cup mechanism 407 is arranged at the bottom of the driving end of the loading cylinder 406, and the nickel sheet is sucked and fixed by the suction cup mechanism 407. The suction cup mechanism 407 is a prior art and will not be described here.

[0057] In this embodiment, the battery conveying assembly includes a storage box 501, a feed port 5011, a guide plate 5012, a discharge port 5013, a push port 5014, a limit spring 502, a drive motor 503, a rotating shaft 504, a transmission mechanism 505, a rotary shaft 506, a cam 507, a rotating disk 508, a guide sleeve 509, a discharge rod 510, a hinged push rod 511 and a feeding mechanism 512. The top of the storage box 501 is provided with a connecting portion, and the storage box 501 is arranged on the top of the frame 100 through the connecting portion. The top of the storage box 501 is provided with a feed port 5011, and a guide plate 5012 is provided in the storage box 501. The guide plate 5012 is tilted. By setting the guide plate 501 2, thereby guiding and limiting the lithium batteries in the storage box 501, so that a row of lithium batteries are arranged at the bottom of the storage box 501, so that the lithium batteries move to the left in sequence when unloading, so that the lithium batteries are unloaded one by one from left to right, and a discharge port 5013 is provided at the bottom of the storage box 501, and a push port 5014 is provided on the opposite side of the discharge port 5013 of the storage box 501, and the limit spring 502 is sleeved on the connecting part of the storage box 501, one side of the limit spring 502 abuts on the storage box 501, and the other side of the limit spring 502 abuts on the frame 100, and the drive motor 503 is provided on one side of the storage box 501, and a rotary end is provided on one side of the drive motor 503. One side of the rotating shaft 504 is connected to the driving motor 503, and a connecting space is provided on the rotating shaft 504. One side of the transmission mechanism 505 is provided on the rotating shaft 504, and the rotational force of the rotating shaft 504 is transmitted by the transmission mechanism 505. The rotating shaft 506 is rotatably provided in the frame 100, and one side of the rotating shaft 506 is connected to the transmission mechanism 505. The cam 507 is sleeved on the rotating shaft 506, and a protrusion is provided on one side of the cam 507. When the cam 507 rotates rapidly, it knocks and pushes the storage box 501 to move back and forth rapidly. The rotating disk 508 is sleeved on the rotating shaft 504, and a connecting column is provided on the rotating disk 508. The guide sleeve 509 is provided in the storage box On one side of the pushing port 5014 of 501, the position of the guide sleeve 509 corresponds to the position of the pushing port 5014, and a guide hole is provided in the guide sleeve 509. One side of the discharging rod 510 is slidably provided in the guide hole of the guide sleeve 509, and a support column is provided on the other side of the discharging rod 510. It is worth noting that the discharging rod 510 will not completely slide out of the guide hole of the guide sleeve 509. One side of the articulated push rod 511 is hinged to the connecting column of the rotating disk 508, and the other side of the articulated push rod 511 is hinged to the support column of the discharging rod 510. The discharging rod 510 is driven to move back and forth by the rotating disk 508 through the articulated push rod 511. The feeding mechanism three 512 is provided on one side of the storage box 501.The feeding mechanism 3 512 is provided with a feeding space.

[0058] In this embodiment, the transmission mechanism 505 includes a driving wheel 513, a driven wheel 514 and a transmission belt 515. The driving wheel 513 is arranged on the rotating shaft 504, and the driven wheel 514 is arranged on one side of the driving wheel 513. The driven wheel 514 is connected to the rotating shaft 506. One side of the transmission belt 515 is sleeved on the driving wheel 513, and the other side of the transmission belt 515 is sleeved on the driven wheel 514.

[0059] In this embodiment, the battery assembly assembly includes a limit seat 601, a guide column 602, a baffle plate 603, a square groove 6031, a push block 6032, a return spring 604, a pushing cylinder 605, a pushing plate 606, a pushing rod 6061, a pushing part 6062, a guide sleeve 607, a rotating sleeve 608, a feed square groove 6081, a discharge square groove 6082, a rotating motor 1 609, a receiving column 610, a receiving barrel 6101, a rotating motor 2 611, a guide sleeve assembly 1 612, a guide sleeve assembly 2 613, a guide sleeve 1 614, a guide sleeve 2 615 and a guide sleeve 3 616. The limit seat 601 is provided with two groups. The limit seats 601 are arranged at intervals on the feeding mechanism 3 512. The limit seat 601 is provided with a lithium storage The limiting part of the battery, the guide column 602 is provided with two pairs, the guide column 602 is arranged in the frame 100, the baffle plate 603 slides on the guide column 602, the baffle plate 603 is provided with a through square groove 6031, the baffle plate 603 is provided with a pushing block 6032, the front end of the pushing block 6032 is provided with an inclined surface, the return spring 604 is sleeved on the guide column 602, the top of the return spring 604 abuts the bottom of the baffle plate 603, the bottom of the return spring 604 abuts on the frame 100, and the return spring 604 drives the baffle plate 603 to reset, the pushing cylinder 605 is provided on the frame 100, and the driving end of the pushing cylinder 605 is arranged toward the baffle plate 603. The material plate 606 is connected to the driving end of the pushing cylinder 605, and a group of pushing rods 6061 are provided on the pushing plate 606, and the pushing rods 6061 are arranged at intervals, and the positions of the pushing rods 6061 correspond one-to-one to the positions of the limit seats 601. The bottom of the pushing plate 606 is provided with a pushing portion 6062 with an inclined surface at the front end, and the pushing portion 6062 contacts the pushing block 6032 of the baffle plate 603, and the guide sleeve 607 is provided on one side of the baffle plate 603. The top of the guide sleeve 607 is provided with a guide portion, and the guide portion expands toward the outside. The position of the guide sleeve 607 corresponds one-to-one to the position of the pushing rod 6061, and the rotating sleeve 608 is provided on one side of the guide sleeve 607. Placed in the frame 100, the rotating sleeve 608 is located on one side of the guide sleeve 607 and is provided with a feed square groove 6081. The feed square groove 6081 is large. No matter how many degrees the rotating sleeve 608 rotates, it can still ensure that the lithium batteries can enter the receiving barrel 6101 through the feed square groove 6081. The rotating sleeve 608 is provided with a discharge square groove 6082. The rotating motor 1 609 is provided in the frame 100. The rotating end of the rotating motor 1 609 is connected to the rotating sleeve 608. The rotating motor 1 609 can drive the rotating sleeve 608 to rotate. The receiving column 610 is rotatably provided in the rotating sleeve 608. The receiving barrel 6101 is provided on the receiving column 610. The receiving barrel 6101 is provided with a cavity for accommodating lithium batteries.The material receiving barrel 6101 is arranged at intervals on the material receiving column 610, and the position of the material receiving barrel 6101 corresponds to the position of the material guide sleeve 607. The second rotating motor 611 is arranged on the frame 100. The rotating end of the second rotating motor 611 is connected to the material receiving column 610, and the material receiving column 610 is driven to rotate by the second rotating motor 611. The material guide sleeve component 1 612 is arranged on one side of the rotating sleeve 608. The material guide sleeve component 1 612 includes a material guide sleeve 1 614, a material guide sleeve 2 615 and a material guide sleeve 3 616. The material guide sleeve 1 614, the material guide sleeve 2 615 and the material guide sleeve 3 616 have the same structure. The material guide sleeve component 2 613 is arranged at At the bottom of guide sleeve assembly 1 612 , guide sleeve assembly 2 613 is positioned correspondingly to guide sleeve 1 614 , guide sleeve 2 615 , and guide sleeve 3 616 , respectively. The inner diameters of guide sleeve assembly 1 612 and guide sleeve assembly 2 613 are larger than the diameter of the lithium battery, and the distance between guide sleeve assembly 1 612 and guide sleeve assembly 2 613 is greater than the length of the lithium battery. Guided by guide sleeve assembly 1 612 , the lithium battery quickly falls to the top of guide sleeve assembly 2 613 , thereby entering guide sleeve assembly 2 613 . The guide portion of guide sleeve assembly 2 613 can guide the lithium battery, ensuring that it falls properly into guide sleeve assembly 2 613 .

[0060] In this embodiment, the connecting assembly components include a front-back moving mechanism 701, an up-down moving mechanism 702, a left-right moving mechanism 703, a flip motor 704, an electric clamp 705, an ejection cylinder 706 and an ejection plate 707. The front-back moving mechanism 701 is arranged on the frame 100, and the front-back moving mechanism 701 can drive the objects to move forward and backward. The up-down moving mechanism 702 is arranged on the front-back moving mechanism 701, and the up-down moving mechanism 702 can drive the objects to move up and down. The left-right moving mechanism 703 is connected to the up-down moving mechanism 702, and the left-right moving mechanism 703 can drive the objects to move left and right. The flip motor 704 is connected to the left-right moving mechanism. 04 is arranged toward the welding supporting assembly, and the flipping motor 704 can move left and right under the drive of the left and right moving mechanism 1, the electric clamp 705 is arranged on the flipping end of the flipping motor 704, and the clamping end of the electric clamp 705 is arranged toward the welding supporting assembly, and the ejection cylinder 706 is provided with a pair, and the ejection cylinders are respectively arranged on one side of the feeding mechanism 202 and the feeding mechanism 1 205, and the driving ends of the ejection cylinders 706 are respectively arranged toward the feeding mechanism 202 and the feeding mechanism 1 205, and the ejection plate 707 is arranged on the driving end of the ejection cylinder 706, and the shape of the ejection plate 707 is adapted to the shape of the through groove of the abutment plate 3041, and the upper cover plate 101 and the lower cover plate 102 are ejected by the ejection plate 707.

[0061] In this embodiment, the forward and backward moving mechanism 701 includes a moving guide rail 708, a moving drive motor 709, a transmission screw 710 and a moving slider 711. The moving guide rail 708 is arranged on the frame 100, and a moving and guiding space is provided on the moving guide rail 708. The moving drive motor 709 is arranged on one side of the moving guide rail 708, and the rotating end of the moving drive motor 709 is arranged toward the moving guide rail 708. The transmission screw 710 is arranged in the moving guide rail 708, and one side of the transmission screw 710 is connected to the moving drive motor 709. The moving slider 711 is arranged in the moving guide rail 708, and the moving slider 711 and the transmission screw 710 are threadedly matched through threaded holes. It is worth noting that the structures of the up and down moving mechanism 702 and the left and right moving mechanism 703 are the same as the structure of the forward and backward moving mechanism 701.

[0062] In this embodiment, the battery spot welding assembly includes a front-to-back moving mechanism 2 801, an up-and-down moving mechanism 2 802, a moving cylinder 803, a welding head 804, a fixed cylinder 805 and a fixed plate 806. The front-to-back moving mechanism 2 801 is symmetrically arranged on both sides of the feeding mechanism 2 206. The front-to-back moving mechanism 2 801 can drive the article to move in the front-to-back direction. The up-and-down moving mechanism 2 is arranged on the front-to-back moving mechanism 2 801. The up-and-down moving mechanism 3 can drive the article to move in the up-and-down direction. The moving cylinder 803 is arranged in the up-and-down moving mechanism 2 802. The moving cylinder 805 03's driving end is arranged toward the feeding mechanism 2 206, the welding head 804 is connected to the driving end of the moving cylinder 803, and the welding head 804 is used to weld the nickel sheet and the lithium battery, the fixed cylinder 805 is arranged on the feeding mechanism 2 206, and the driving end of the fixed cylinder 805 is arranged downward, and the fixed plate 806 is arranged on the driving end of the fixed cylinder 805, and the upper cover plate 101 and the lower cover plate 102 are fixed by the fixed plate 806. It is worth noting that the structure of the front-back moving mechanism 2 801 and the up-down moving mechanism 2 802 is the same as the structure of the front-back moving mechanism 1 701.

[0063] The method for using the above-mentioned fully automatic spot welding machine for processing battery packs includes the following steps:

[0064] S1: The first feeding mechanism 201 conveys the upper cover 101 and the lower cover 102 forward, and then the electric telescopic rod 1 305 drives the limit block to move upward to limit the upper cover 101 and the lower cover 102. Then, the pusher 203 pushes the upper cover 101 and the lower cover 102 through the push plate 204, so that they move to the feeding mechanism 202 and the feeding mechanism 1 205;

[0065] S2: The feeding mechanism 202 and the feeding mechanism 1 205 drive the upper cover 101 and the lower cover 102 to move, and then the electric telescopic rod 2 306 drives the limit block to move upward to limit the upper cover 101 and the lower cover 102. The lifting cylinder 302 drives the limit cylinder 303 to move upward, and the limit cylinder 303 drives the limit plate 304 to move forward, so that the upper cover 101 and the lower cover 102 are respectively against the abutment plate 3041. The rotary screw 404 is driven by the rotary motor 403, and at the same time, the rotary screw 404 drives the movable slider 405 to move onto the nickel sheet box 401. The loading cylinder 406 drives the suction cup mechanism 407 to suck the nickel sheet, and under the drive of the rotary screw, the nickel sheet is placed in the limiting groove 104 and the limiting groove 107 of the upper cover plate 101 and the lower cover plate 102. The fixed magnets 103 in the upper cover plate 101 and the lower cover plate 102 suck the nickel sheet;

[0066] S3: The feeding mechanism 202 drives the lower cover 102 to move forward, and at the same time, the electric telescopic rod three 307 drives the limit block to move upward to limit the lower cover 102. At this time, the batteries in the storage box 501 move to the discharge port 5013 under the guidance of the guide plate 5012, and the driving motor 503 drives the rotating shaft 504 to rotate. The rotating shaft 504 drives the rotating shaft 506 and the cam 507 to rotate through the transmission mechanism 505. The cam 507 hits the storage box 501 while rotating, and the storage box 501 moves under the push of the cam 507. After the movement is completed, the limit spring 502 drives the storage box 501 to reset. At the same time, the rotating disk 508 rotates with the rotating shaft 504, and the rotating disk 508 drives the discharging rod 510 to move forward through the hinged push rod 511, thereby pushing the lithium battery out of the discharge port 5013 and pushing it into the limit seat 601, and then the feeding mechanism three 512 drives the limit seat 601 to move forward;

[0067] S4: When the limit seat 601 moves to one side of the baffle plate 603, the pushing cylinder 605 pushes the pushing plate 606 to move toward the limit seat 601, and the pushing part 6062 of the pushing plate 606 pushes the pushing block 6032 to move, and the baffle plate 603 moves downward under the guidance of the guide column 602, and the baffle plate 603 compresses the reset spring 604, and the rotating motor 1 609 drives the discharge square groove 6082 of the rotating sleeve 608 to move to the position corresponding to the guide sleeve 1 614, and the rotating motor 2 611 drives the receiving barrel 6101 of the receiving column 610 to correspond to the position of the guide sleeve 607. After the pushing plate 606 descends, it does not limit the lithium battery, and the pushing rod 6061 on the pushing plate 606 pushes the lithium battery into the guide In the sleeve 607, the lithium batteries in the guide sleeve 607 fall into the receiving barrel 6101, and the receiving barrel 6101 drives the lithium batteries to rotate to the position corresponding to the discharge square groove 6082. The lithium batteries fall into the guide sleeve 1 614 through the discharge square groove 6082, and then fall into the guide sleeve assembly 2 613 after being guided by the guide sleeve 1 614, and then fall into the limiting groove 3 108 of the lower cover 102. After completing the loading of a single group of batteries, the rotating motor 1 609 drives the discharge square groove 6082 of the rotating sleeve 608 to move to correspond to the guide sleeve 2 615, and then guides the fallen batteries through the guide sleeve 2 615 to the corresponding limiting groove 3 108 of the lower cover 102. This reciprocating process completes the loading of the lithium batteries.

[0068] S5: The ejection cylinder 706 drives the ejection plate 707 to eject the upper cover 101 and the lower cover 102. The front-back moving mechanism 701, the up-down moving mechanism 702 and the left-right moving mechanism cooperate to drive the flip motor 704 to move to one side of the upper cover 101. The electric clamp 705 clamps the upper cover 101. The flip motor 704 then drives the upper cover 101 to flip 180 degrees. The front-back moving mechanism 701, the up-down moving mechanism 702 and the left-right moving mechanism repeatedly drive the upper cover 101 to move to The lower cover 102 is placed on the upper cover 102. The limiting posts 1021 on the lower cover 102 are connected to the limiting holes 1011 of the upper cover 101. At the same time, the limiting posts 1021 and the magnets on the limiting holes 1011 attract each other. The clamping motor clamps the lower cover 102 and the upper cover 101. The flip motor 704 drives the upper cover 101 and the lower cover 102 to flip 90 degrees. Then, the upper cover 101 and the lower cover 102 are placed on the second feeding mechanism 206.

[0069] S6: The feeding mechanism 206 drives the upper cover 101 and the lower cover 102 to be transported forward, and then the electric telescopic rod 4 308 drives the limit block to move upward to limit the upper cover 101 and the lower cover 102, and then the fixed cylinder 805 drives the fixed plate 806 to move downward to fix the upper cover 101 and the lower cover 102, and the front and rear moving mechanism 2 801 and the up and down moving mechanism 2 802 drive the moving cylinder 803 to move to the position corresponding to the welding hole 106 and the welding hole 1 109, and the moving cylinder 803 drives the welding head 804 to move forward, thereby welding the nickel sheet and the lithium battery. Example 2

[0070] like Figure 1-12 As shown, the difference between this embodiment and embodiment 1 is that, in this embodiment, the battery assembly component also includes a lower slide 810 and an upper protective plate 820, the top of the lower slide is connected to the guide sleeve component 1 612, and the bottom of the lower slide 810 is connected to the guide sleeve component 2 613, the shape of the lower slide 810 is arc-shaped, and the lower slide 810 limits the 810 lithium battery, the upper protective plate 820 is arranged on the top of the guide sleeve component 2 613, the upper protective plate 820 is located on one side of the lower slide, and the shape of the upper protective plate 820 is a quarter of a cylinder, and the upper protective plate 820 guides the lithium battery, thereby ensuring that the lithium battery can correctly enter the guide sleeve component 2 613.

[0071] In the description of the present invention, it should be noted that when terms such as "upper," "lower," "inner," "outer," "left," and "right" appear to indicate an orientation or positional relationship, they should be understood to be based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is typically placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be understood as limiting the present invention. In addition, when terms such as "first" and "second" appear, they are used solely to distinguish descriptions and should not be understood to indicate or imply relative importance. In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, terms such as "installed," "set," and "connected" should be understood broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood based on the specific circumstances.

Claims

1. A fully automatic spot welding machine for processing battery packs, comprising a frame, characterized in that: Also includes: A welding bearing assembly, wherein the welding bearing assembly is arranged in the frame; A feeding assembly is provided in the frame, and the welding bearing assembly is driven to move by the feeding assembly; An assembly limiting component is provided on the frame and limits the welding bearing component; A nickel sheet loading assembly is provided on the frame and drives the nickel sheet to move into the welding bearing assembly; A battery conveying assembly is provided on the frame and drives the lithium batteries to move; The battery conveying assembly comprises a material storage box (501) and a driving motor (503); the material storage box (501) is arranged on the top of the frame (100) through a connecting portion; a material feed port (5011) is provided on the top of the material storage box (501); a material guide plate (5012) is provided in the material storage box (501); a material discharge port (5013) is provided at the bottom of the material storage box (501); a material push port (5014) is provided on the side opposite to the material discharge port (5013) of the material storage box (501); and a limit spring (502) is sleeved on the connecting portion of the material storage box (501); The driving motor (503) is arranged on one side of the material storage box (501), and a rotating end is provided in the driving motor (503). A rotating shaft (504) is provided on the driving motor (503), and a transmission mechanism (505) is provided on the rotating shaft (504). The transmission mechanism (505) transmits the rotational force of the rotating shaft (504). A rotating shaft (506) is provided in the transmission mechanism (505), and a cam (507) is sleeved on the rotating shaft (506). The rotating shaft (506) is provided with a rotating end. 4) is also provided with a rotating disk (508), the rotating disk is provided with a connecting column, a guide sleeve (509) is provided on one side of the pushing port (5014) of the storage box (501), a discharging rod (510) is slidably provided in the guide sleeve (509), a supporting column is provided on the discharging rod (510), a hinged push rod (511) is hinged on the connecting column, and the other side of the hinged push rod (511) is hinged on the supporting column, and a feeding mechanism three (512) is provided on one side of the storage box (501); A battery assembly assembly is provided on the frame, and the battery assembly assembly transports the lithium battery to the welding support assembly; The battery assembly assembly includes a limiting seat (601) arranged on the third feeding mechanism (512), a guide column (602) is provided in the frame (100), a blocking plate (603) is slidably provided on the guide column (602), a square groove (6031) is provided on the blocking plate, a pushing block (6032) with an inclined front end is provided on the blocking plate (603), a return spring (604) is also provided on the guide column (602), a pushing cylinder (605) is provided on the pushing cylinder (605), a pushing plate (606) is provided on the pushing plate, a group of pushing rods (6061) is provided on the pushing plate, and a pushing portion (6062) with an inclined front end is provided at the bottom of the pushing plate; A guide sleeve (607) is provided on one side of the baffle plate (603), a rotating sleeve (608) is provided on one side of the guide sleeve, a feeding square groove (6081) is provided on the rotating sleeve located on one side of the guide sleeve, and a discharging square groove (6082) is also provided on the rotating sleeve, a rotating motor (609) is connected to one side of the rotating sleeve (608), a receiving column (610) is rotatably provided in the rotating sleeve (608), and a receiving barrel (6101) is provided on the receiving column, and the receiving column (610) A rotating motor 2 (611) is connected to the top, and a guide sleeve assembly 1 (612) is provided on one side of the rotating sleeve (608), and the guide sleeve assembly 1 (612) includes a guide sleeve 1 (614), a guide sleeve 2 (615) and a guide sleeve 3 (616). A guide sleeve assembly 2 (613) is provided at the bottom of the guide sleeve assembly 1 (612), and the position of the guide sleeve assembly 2 (613) corresponds to the position of the guide sleeve 1 (614), the guide sleeve 2 (615) and the guide sleeve 3 (616). A connecting assembly component is provided in the frame and can drive the welding bearing component to perform connecting assembly; The battery spot welding assembly is located on both sides of the feeding assembly, and the battery spot welding assembly is used to spot weld the lithium battery and the nickel sheet.

2. A fully automatic spot welding machine for processing battery packs according to claim 1, characterized in that: The welding bearing assembly comprises an upper cover plate (101) with a limiting hole (1011) provided on the top, the upper cover plate (101) is arranged on the frame (100), a magnet is provided in the limiting hole (1011), a limiting groove (104), a limiting groove 1 (105) and a welding hole (106) are provided on the upper cover plate (101), and further comprises a lower cover plate (102) with a limiting column (1021) provided on the top, the lower cover plate (102) is arranged on the frame (100), a magnet is provided on the top of the limiting column (1021), a limiting groove 2 (107) and a limiting groove 3 (108) are provided on the top of the lower cover plate (102), a welding hole 1 (109) is provided in the lower cover plate (102), and a plurality of fixed magnets (103) are further provided in the upper cover plate (101) and the lower cover plate (102).

3. The fully automatic spot welding machine for processing battery packs according to claim 1, characterized in that: The feeding assembly comprises a first feeding mechanism (201) arranged on both sides of a frame (100); a feeding mechanism (202) is provided on one side of the first feeding mechanism (201); the feeding mechanism (202) is perpendicular to the first feeding mechanism (201); a pushing member (203) is provided on one side of the first feeding mechanism (201); a pushing plate (204) is provided on the telescopic end of the pushing member (203); a feeding mechanism 1 (205) is further provided on one side of the first feeding mechanism (201); the feeding mechanism 1 (205) is arranged perpendicular to the first feeding mechanism (201); and a feeding mechanism 2 (206) is further provided in the frame (100).

4. A fully automatic spot welding machine for processing battery packs according to claim 3, characterized in that: The assembly limit component includes an electric telescopic rod group (301) arranged in a frame, wherein the electric telescopic rod group (301) includes an electric telescopic rod 1 (305), an electric telescopic rod 2 (306), an electric telescopic rod 3 (307) and an electric telescopic rod 4 (308), and a limit block is arranged on the top of the electric telescopic rod 1 (305), the electric telescopic rod 2 (306), the electric telescopic rod 3 (307) and the electric telescopic rod 4 (308). A lifting cylinder (302) is provided on one side of the frame (100), a limit cylinder (303) is provided on the driving end of the lifting cylinder (302), a limit plate (304) is provided on the driving end of the limit cylinder (303), and an abutment plate (3041) is respectively provided on one side of the feeding mechanism (202) and the feeding mechanism 1 (205), and a through groove is provided on the abutment plate (3041).

5. The fully automatic spot welding machine for processing battery packs according to claim 1, characterized in that: The nickel sheet loading assembly comprises a nickel sheet box (401) and a movable guide rail (402) arranged in a frame, wherein the movable guide rail (402) is provided with a rotary motor (403), a rotary screw (404) is provided on the rotary end of the rotary motor (403), a movable slider (405) is slidably provided in the movable guide rail (402), the movable slider (405) and the rotary screw (404) form a threaded fit, a loading cylinder (406) is provided on the movable slider (405), a driving end of the loading cylinder (406) is downwardly arranged, and a suction cup mechanism (407) is provided at the bottom of the driving end of the loading cylinder (406), and the nickel sheet is sucked and fixed by the suction cup mechanism (407).

6. The fully automatic spot welding machine for processing battery packs according to claim 2, characterized in that: The connecting assembly component comprises a front-back moving mechanism (701) arranged on a frame (100), wherein the front-back moving mechanism (701) is provided with an up-down moving mechanism (702), wherein the up-down moving mechanism (702) is provided with a left-right moving mechanism (703), wherein the left-right moving mechanism (703) is provided with a turning motor (704), wherein an electric clamp (705) is provided on the turning end of the turning motor (704), and wherein an ejection cylinder (706) is further provided in the frame (100), wherein an ejection plate (707) is provided on the driving end of the ejection cylinder (706), and wherein the ejection cylinder (706) ejects the upper cover plate (101) and the lower cover plate (102).

7. The fully automatic spot welding machine for processing battery packs according to claim 3, characterized in that: The battery spot welding assembly includes a forward and backward moving mechanism (801) symmetrically arranged on both sides of a second feeding mechanism (206), a vertical moving mechanism (802) is provided on the forward and backward moving mechanism (801), a moving cylinder (803) is provided on the vertical moving mechanism (802), a welding head (804) is provided on the driving end of the moving cylinder (803), a fixed cylinder (805) is provided on the feeding mechanism (206), and a fixed plate (806) is provided on the driving end of the fixed cylinder (805).

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