A lead-acid battery busbar welding system using argon arc welding

Abstract

The present invention proposes a lead-acid battery busbar welding system using argon arc welding, comprising an argon arc welding machine, a battery conveying line, a battery positioning mechanism, a welding mold, and a solder feeding mechanism. The battery welding station of the battery conveying line is provided with a battery positioning mechanism, and a welding mold is provided above the battery positioning mechanism. When the welding mold is closed, it clamps the battery pole ear and forms a welding cavity that can accommodate solder. The solder feeding mechanism is used to transport the solder to the welding cavity above the battery pole ear to be welded. A argon arc welding machine is provided on one side of the battery welding station, and the argon arc welding machine is equipped with a movable welding gun. The argon arc welding machine heats the solder and the pole ear through the large current discharge effect generated by the welding gun, and melts the solder and the upper end of the pole ear into one body to form a busbar. The welding system can realize unmanned automatic welding, and adopts a unique argon arc welding busbar, with high heating efficiency and greatly reduced energy consumption.

Description

[Technical field]

[0001] The invention relates to the technical field of battery busbar welding, in particular to a lead-acid battery busbar welding system using argon arc welding. [Background technology]

[0002] The welding of lead-acid batteries, especially the welding of busbars and terminals (terminals) of lead-acid batteries for electric vehicles, refers to the process of melting the positive electrode in the battery group and the negative electrode of the adjacent battery cell and connecting them in series to achieve the busbar welding process. Manual welding was first used, in which the pole piece of the pole piece was melted by high-temperature combustion of gas, and solder was added, and then cooled and formed to achieve the welding of the busbar. With the improvement of the level of automation, the cast welding method is generally used in the market, in conjunction with automatic or semi-automatic welding machines, to achieve the welding of battery busbars and terminals. The cast welding method is to heat the alloy lead in a lead pot and melt it into a liquid state, add the liquid lead into the welding mold cavity, then turn the battery upside down, insert the pole piece into the lead liquid cavity with the pole piece facing down, so that the pole piece is melted into one, and the busbar terminal is welded.

[0003] The above-mentioned manual gas welding has certain defects: high labor intensity, poor welding environment, and is not conducive to the health of the operator. The welding quality consistency is poor, and the battery quality controllability is poor. Automatic or semi-automatic casting welding also has the disadvantage of high labor intensity. At the same time, because the lead liquid is kept warm all the time, the energy consumption is large and the welding cost is high. The welding environment cannot be relatively isolated, and the lead fume pollution is large, which affects the health of the operator. [Summary of the invention]

[0004] The purpose of the present invention is to solve the problems in the prior art and to propose a lead-acid battery busbar welding system using argon arc welding, which can be operated in an automated manner, has a relatively independent working space, occupies a small space, and can realize unmanned automated welding; and uses a unique argon arc welding busbar, which has high heating efficiency and greatly reduces energy consumption.

[0005] To achieve the above-mentioned purpose, the present invention proposes a lead-acid battery busbar welding system using argon arc welding, comprising an argon arc welding machine, a battery conveying line, a battery positioning mechanism, a welding mold, and a solder feeding mechanism. The battery conveying line is provided with a loading station, a battery welding station and a unloading station in sequence along its conveying direction. The battery welding station is provided with a battery positioning mechanism for positioning the battery. A welding mold is provided above the battery positioning mechanism. The welding mold clamps the battery pole ear when the mold is closed, and a welding cavity for accommodating solder is formed above the battery pole ear. The solder feeding mechanism is used to transport the solder to the welding cavity above the battery pole ear to be welded. A argon arc welding machine is provided on one side of the battery welding station. The argon arc welding machine is equipped with a movable welding gun. The argon arc welding machine heats the solder and the pole ear through the large current discharge effect generated by the welding gun, and melts the solder and the upper end of the pole ear into one, so as to form a busbar.

[0006] Preferably, the battery welding station includes a first welding station and a second welding station, and the welding mold includes a first welding mold assembly and a second welding mold assembly respectively arranged above the first welding station and the second welding station, the first welding mold assembly is provided with a movable right comb-shaped mold and a movable right closing mold plate, when the right comb-shaped mold moves toward the right closing mold plate until the two are closed, a welding cavity that can accommodate solder is formed between the two, and the second welding mold assembly is provided with a movable left comb-shaped mold and a movable left closing mold plate, when the left comb-shaped mold moves toward the left closing mold plate until the two are closed, a plurality of welding cavities that can accommodate solder are formed between the two.

[0007] Preferably, one side of the right comb-shaped mold and the left comb-shaped mold has a plurality of comb-shaped grooves for accommodating battery ears, the comb-shaped grooves are arranged at intervals, and two comb-shaped grooves are separated by comb-shaped teeth. A cavity groove is provided above the comb-shaped groove, and a plurality of bosses are provided at intervals in the cavity groove. When the first welding mold assembly or the second welding mold assembly is closed, the bosses separate the welding cavity into a plurality of independent cavity units.

[0008] Preferably, the solder feeding mechanism includes an arrangement inclined table, a lifting mechanism and a feeding mechanism. The upper end surface of the arrangement inclined table has an arrangement channel for solder to pass through. The arrangement channel is inclined, and a lifting mechanism is provided at the lower end. The lifting mechanism is provided with a liftable lifting hook plate. The feeding mechanism is provided with liftable clamping fingers for grabbing the solder. The feeding mechanism is movably arranged on the solder conveying slide rail. The feeding mechanism can move along the solder conveying slide rail to move the clamping fingers to the battery welding station.

[0009] Preferably, the second welding mold assembly is further provided with two terminal positioning grooves for accommodating terminals, and the two terminal positioning grooves are respectively arranged on the outer sides of the two cavity units.

[0010] Preferably, it also includes a terminal feeding mechanism, which includes a terminal feeding seat, a double-station loading mechanism, a pushing mechanism, a manipulator walking seat and a manipulator clamping mechanism. The terminal feeding seat is provided with a feeding guide groove, and a movable double-station loading mechanism is provided at one end of the feeding guide groove close to the outlet. The double-station loading mechanism is provided with a first terminal position and a second terminal position, and the pushing mechanism is provided with a pushing rack movable along the length direction of the feeding guide groove, and the pushing rack is used to push the terminals in the feeding guide groove to the first terminal position and the second terminal position. A manipulator clamping mechanism movable along the length direction is provided below the manipulator walking seat, and the manipulator clamping mechanism is located above the double-station loading mechanism. Two liftable terminal grabbing manipulators are provided below the manipulator clamping mechanism for grabbing the terminals on the first terminal position and the second terminal position, and conveying them to the battery welding station.

[0011] Preferably, the device further comprises a gas supply device for providing a shielding gas, wherein the gas supply device outputs shielding gas to isolate the welding area from contact with air during welding, and the shielding gas is argon gas.

[0012] Preferably, the battery positioning mechanism includes a movable push frame with a U-shaped opening, a flat baffle plate arranged opposite the movable push frame, and an auxiliary power mechanism for driving the movable push frame to move. The U-shaped opening matches the size of the battery outer frame, and there is a space for accommodating the battery between the movable push frame and the flat baffle plate. Under the push of the movable push frame, the two sides of the battery respectively abut against the flat baffle plate and the movable push frame, so that the battery is fixed between the flat baffle plate and the U-shaped opening.

[0013] Beneficial effects of the present invention:

[0014] 1. High production efficiency, automatic flow operation, relatively independent working space, small space occupation, unmanned automatic welding can be realized, greatly reducing labor costs.

[0015] 2. The operator only needs to monitor the welding process and can stay away from the working area. The labor intensity is greatly reduced and the operator's health is also guaranteed.

[0016] 3. The unique argon arc welding busbar has high heating efficiency and greatly reduces energy consumption. The welding material also uses part of the higher material of the tab, which greatly reduces material consumption.

[0017] 4. Comprehensively achieve saving of manpower, labor and materials, reducing consumption and improving efficiency, reducing costs and improving quality.

[0018] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0019] Figure 1is a system block diagram of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a battery welding station on a battery conveyor line of the present invention;

[0021] Figure 3 It is a schematic diagram of the mold opening state of the first welding mold assembly and the second welding mold assembly on the battery welding station of the present invention;

[0022] Figure 4 It is a schematic diagram of the mold opening state of the first welding mold assembly and the second welding mold assembly on the battery welding station of the present invention;

[0023] Figure 5 is a schematic structural diagram of the first welding mold assembly of the present invention;

[0024] Figure 6 yes Figure 5 A top view of

[0025] Figure 7 yes Figure 6 A magnified schematic diagram of K;

[0026] Figure 8 is a schematic top view of a second welding mold assembly of the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the solder feeding mechanism of the present invention;

[0028] Fig.10 yes Fig. 9 The main view;

[0029] Fig.11 It is a structural schematic diagram of the terminal feeding mechanism of the present invention;

[0030] Fig.12 yes Fig.11 Schematic diagram of the internal structure;

[0031] Fig.13 yes Fig.11 The main view;

[0032] Fig.14 yes Fig.11 Right view of . [Specific implementation method]

[0033] See also Figures 1 to 14The present invention discloses a lead-acid battery busbar welding system using argon arc welding, comprising an argon arc welding machine, a battery conveying line 1, a battery positioning mechanism 2, a welding mold 3, and a solder feeding mechanism 4. The battery conveying line 1 is provided with a loading station 11, a battery welding station 10, and a unloading station 14 in sequence along its conveying direction. The battery welding station 10 is provided with a battery positioning mechanism 2 for positioning a battery 100. A welding mold 3 is provided above the battery positioning mechanism 2. The welding mold 3 clamps the battery pole ear when the mold is closed, and forms a welding cavity for accommodating solder above the battery pole ear. The solder feeding mechanism 4 is used to transport the solder to the welding cavity above the battery pole ear to be welded. A argon arc welding machine is provided on one side of the battery welding station 10. The argon arc welding machine is equipped with a movable welding gun. The argon arc welding machine heats the solder and the pole ear through the large current discharge effect generated by the welding gun, and melts the solder and the upper end of the pole ear into one body to form a busbar.

[0034] Further, see Figure 2-Figure 4 The battery welding station 10 includes a first welding station 12 and a second welding station 13. The welding mold 3 includes a first welding mold assembly 31 and a second welding mold assembly 32 respectively arranged above the first welding station 12 and the second welding station 13. The first welding mold assembly 31 is provided with a movable right comb-shaped mold 311 and a movable right clamping mold 312. When the right comb-shaped mold 311 moves toward the right clamping mold 312 until the two are clamped, a welding cavity for accommodating solder is formed between the two. The second welding mold assembly 32 is provided with a movable left comb-shaped mold 321 and a movable left clamping mold 322. When the left comb-shaped mold 321 moves toward the left clamping mold 322 until the two are clamped, a plurality of welding cavities for accommodating solder are formed between the two. The first welding mold assembly 31 and the second welding mold assembly 32 also include a first translation force mechanism for controlling the movement of the right comb-shaped mold and the left comb-shaped mold, respectively, and a second translation force mechanism for controlling the movement of the right clamping mold and the left clamping mold, respectively.

[0035] Further, see Figure 5-Figure 8 , one side of the right comb-shaped mold 311 and the left comb-shaped mold 321 has a plurality of comb-shaped grooves for accommodating the battery tabs, the comb-shaped grooves are arranged at intervals, and the two comb-shaped grooves are separated by comb-shaped teeth 33, and a cavity groove 3310 is provided above the comb-shaped groove, and a plurality of bosses 34 are provided in the cavity groove 3310 at intervals, and when the first welding mold assembly 31 or the second welding mold assembly 32 is molded, the bosses 34 separate the welding cavity into a plurality of independent cavity units. The two sides of the ends of the comb-shaped teeth 33 are also provided with a first guiding inclined surface 331, which has a guiding effect and is convenient for inserting the tabs. The left and right comb-shaped molds have an introduction inclined opening 38 on the side facing the left and right mold plates, which has a guiding effect and is convenient for smooth mold closing.

[0036] Specifically, in this embodiment, the comb-shaped grooves include two edge comb-shaped grooves 36 arranged on the outside, and a plurality of middle comb-shaped grooves 37 arranged between the two edge comb-shaped grooves 36, and the spacing a between the edge comb-shaped grooves 36 and the middle comb-shaped grooves 37 closest to the edge comb-shaped grooves 36 is smaller than the spacing b between two adjacent middle comb-shaped grooves 37. The outer side of the edge comb-shaped grooves 36 is also provided with a second guiding bevel 361, which has a guiding effect and is convenient for inserting the tabs. Moreover, when the mold is closed, the second guiding bevel can squeeze the tabs into the comb-shaped grooves, so as to achieve the purpose of the edge tabs leaning towards the center, and the work of bending the battery side tabs to the inside before welding can be omitted.

[0037] Furthermore, the solder feeding mechanism 4 includes an arranging inclined surface table 41, a lifting mechanism 42 and a feeding mechanism 43, the upper end surface of the arranging inclined surface table 41 has an arranging channel 410 for the solder 200 to pass through, and a baffle 411 is provided above one side of the outlet of the arranging channel 410, a single arranging channel for a lead wire 100 to pass through is formed between the lower end surface of the baffle 411 and the upper end surface of the arranging channel 410, the solder 200 is a lead wire, the arranging channel 410 is inclined, and a lifting mechanism 42 is provided at the lower end, the lifting mechanism 42 is provided with a liftable lifting hook plate 422, the feeding mechanism 43 is provided with a liftable clamping finger 433 for grabbing the solder 200, the feeding mechanism 43 is movably arranged on the solder conveying slide rail, the feeding mechanism 43 can move along the solder conveying slide rail to move the clamping finger 433 to the battery welding station 10.

[0038] Specifically, the lifting mechanism 42 further includes a lifting cylinder 421, which is disposed below the lifting hook plate 422 to control the lifting hook plate 422 to rise or fall, and the lifting hook plate 422 includes a solder bracket 4221 and a blocking frame 4222 disposed sequentially from top to bottom, and the upper end surface of the solder bracket 4221 is provided with a hook groove 42210, the bottom surface of the hook groove 42210 is an inclined surface 42211, and the side away from the feeding mechanism 43 is a low end. A positioning cylinder 44 is disposed at one end of the lifting mechanism 42, and the telescopic rod of the positioning cylinder 44 is connected to a positioning push plate 441, and the positioning push plate 441 is disposed at one end of the lifting hook plate 422. The feeding mechanism 43 includes a first lifting cylinder 431 and a clamping cylinder 432 . The telescopic rod of the first lifting cylinder 431 is connected to the clamping cylinder 432 . The clamping cylinder 432 is connected to the clamping fingers 433 for controlling the clamping fingers 433 to be loosened or clamped.

[0039] See also Figure 3 , 48. In the present embodiment, the second welding mold assembly 32 is further provided with two terminal positioning grooves 35 for accommodating the terminals 300. The two terminal positioning grooves 35 are respectively arranged on the outer sides of the two cavity units.

[0040] Furthermore, it also includes a gas supply device for providing a protective gas, the gas supply device outputs a protective gas to isolate the welding area from contact with the air during welding, and the protective gas is argon. It also includes a control system that is communicatively connected to the battery conveyor line 1, the battery positioning mechanism 2, the welding mold 3, the solder feeding mechanism 4, and the terminal feeding mechanism 5. The control system coordinates the coordination of related actions before and after welding, and also controls the welding process parameters to achieve automatic welding.

[0041] Furthermore, the battery positioning mechanism 2 includes a movable push frame with a U-shaped opening, a flat baffle plate arranged opposite the movable push frame, and an auxiliary power mechanism for driving the movable push frame to move. The U-shaped opening matches the outer frame size of the battery 100, and there is a space between the movable push frame and the flat baffle plate to accommodate the battery 100. Under the push of the movable push frame, the two sides of the battery 100 are respectively abutted against the flat baffle plate and the movable push frame, so that the battery 100 is fixed between the flat baffle plate and the U-shaped opening.

[0042] See also Figure 11-Figure 14 In order to realize double-station loading, double-outlet vibration disk loading is mostly adopted, but the double-outlet vibration disk has a complex structure and high requirements. In this embodiment, in order to connect the single-outlet vibration disk, a terminal feeding mechanism 5 is additionally provided. The terminal feeding mechanism 5 includes a terminal feeding seat 51, a double-station loading mechanism 52, a pushing mechanism 53, a manipulator walking seat 54 and a manipulator clamping mechanism 55. The terminal feeding seat 51 is provided with a feeding guide groove 511, and a movable double-station loading mechanism 52 is provided at one end of the feeding guide groove 511 close to the outlet. The double-station loading mechanism 52 is provided with a first terminal position 5211 and a second terminal position 5212. The pushing mechanism 53 is provided with a pushing rack 532 which can move along the length direction of the feeding guide groove 511. The pushing rack 5 32 is used to push the terminal 300 in the feed guide groove 511 to the first terminal position 5211 and the second terminal position 5212. A manipulator clamping mechanism 55 that can move along its length direction is arranged below the manipulator walking seat 54. The manipulator clamping mechanism 55 is located above the double-station feeding mechanism 52. Two liftable terminal grasping manipulators 554 are arranged below the manipulator clamping mechanism 55, which are used to grasp the terminals 300 on the first terminal position 5211 and the second terminal position 5212, and convey them to the battery welding station 10.

[0043] Specifically, in the present embodiment, the double-station feeding mechanism 52 comprises a terminal shift seat 521, a terminal shift cylinder 522 and a mounting seat 523, the mounting seat 523 is provided with a first guide rail 5231, the terminal shift seat 521 is movably mounted on the first guide rail 5231 through a shift slide 5210, the terminal shift seat 521 is sequentially provided with a first terminal position 5211 and a second terminal position 5212 along its length direction, the first guide rail 5231 is parallel to the length direction of the terminal shift seat 521, the terminal shift cylinder 522 is installed at one end of the mounting seat 523, the telescopic rod of the terminal shift cylinder 522 is connected to the shift slide 5210, and is used to drive the terminal shift seat 521 to move along the first guide rail 5231.

[0044] Specifically, in this embodiment, the pushing mechanism 53 further includes a pushing cylinder 531, the telescopic rod of the pushing cylinder 531 is connected to the pushing frame 532, so as to drive the pushing frame 532 to move, and the bottom of the pushing frame 532 is provided with a pushing plate 321 extending in the horizontal direction. A second guide rail 541 is symmetrically arranged below the manipulator travel seat 54, and the manipulator gripping mechanism 55 is movably mounted on the second guide rail 541. A translation cylinder 542 is installed at one end of the manipulator travel seat 54, and the telescopic rod of the translation cylinder 542 is connected to the manipulator gripping mechanism 55, so as to drive it to move along the second guide rail 541.

[0045] Specifically, in the present embodiment, the manipulator clamping mechanism 55 also includes a walking slide 551, a second lifting cylinder 552, and a lifting frame 553. The walking slide 551 is installed on the second guide rail 541. The telescopic rod of the translation cylinder 542 is connected to the walking slide 551. The second lifting cylinder 552 is installed below the walking slide 551. The telescopic rod of the second lifting cylinder 552 is connected to the lifting frame 553. Two terminal grasping manipulators 554 are symmetrically installed at the bottom of the lifting frame 553.

[0046] Working process of the present invention:

[0047] The present invention discloses a lead-acid battery busbar welding system using argon arc welding. When working, the battery 100 is in an upright state with the pole ear facing upward, and is conveyed forward along the battery conveyor line 1. The welding of the pole groups on both sides is completed by the loading station 11 through the cell welding station 10. After the welding is completed, the welding mold is demoulded, the positioning mechanism is released, the battery is conveyed forward by one station, and the next battery to be welded is conveyed to the battery welding station 10 at the same time, and the welding of the next battery is ready to start. The battery that has completed welding is output through the unloading station 14. When the battery 100 to be welded is conveyed to the battery welding station 10, the battery positioning mechanism 2 accurately positions the battery, and the welding mold 3 is closed to clamp the pole ear to form a welding cavity. The solder feeding mechanism 4 delivers the solder 200 to the top of the welding pole ear. The large current discharge generated by the argon arc welding machine welding gun quickly heats the solder and the pole ear, and melts the solder and the upper end of the pole ear into one body to form a busbar. At the same time, the shielding gas effectively isolates the welding area from contact with the air during welding, ensuring welding stability and welding quality. Argon is used as the shielding gas during welding.

[0048] Working principle of welding mold 3:

[0049] The battery 100 to be welded enters the first welding station 12, and the battery positioning mechanism 2 is activated to first position the battery, and then the right comb-shaped mold 311 and the right clamping plate 312 are clamped. The clamping action is that the right clamping plate 312 is translated to the clamping position, and then the right comb-shaped mold 311 moves toward the right clamping plate 312, so that the comb teeth are inserted into the grooves between the tabs until the clamping is completed with the right clamping plate 312. The battery tabs are clamped between the right comb-shaped mold 311 and the right clamping plate 312, and the solder is placed above the tabs. The welding wire and the tabs are melted at high temperature by an argon arc welding gun. The molten body solidifies into a busbar in the first cavity, and partial welding of the battery busbar is realized. The battery then enters the second welding station 13 for welding, and the welding of the latter half is completed. Among them, the solder feeding mechanism 4 and the terminal feeding mechanism 5 can deliver solder and terminals to the second welding station 13. The second welding mold assembly 32 is provided with a welding cavity and a terminal positioning groove 35, which can simultaneously complete the welding of the busbar and the terminal. Of course, the terminal welding can also be arranged independently at another welding station. In this embodiment, the busbar and the terminal are welded at the second welding station 13.

[0050] During welding, the left / right comb-shaped molds and the left / right closing mold plates are closed, the tabs are clamped in the comb-shaped grooves, the solder / lead wire is placed above the tabs, and a boss 34 is added in the welding cavity, so that the solder can be made into a long strip of solder, and it is not necessary to make a section of solder for each welding cavity. During welding, after the long strip of solder is melted, the solder above the boss 34 flows into the cavity unit due to the action of the fluid. This eliminates the trouble of making a small section of solder and placing it on each cavity, thereby improving welding efficiency.

[0051] Working principle of solder feeding mechanism 4:

[0052] First, the segmented solder 200 / lead wire is placed on the arrangement inclined plane table 1. Due to the action of gravity, the lead wire can roll down along the inclined plane of the arrangement channel 410. There is a lifting hook plate 422 at the lowest end of the arrangement channel 410, and the lead wire can just fall into the hook groove 42210 of the lifting hook plate 422. The positioning cylinder 44 is first activated to make the lead wire axially in place just below the grabbing station, and then the lifting cylinder 421 is activated to control the lifting hook plate 422 to rise, driving the lead wire in the hook groove 42210 to rise. Under the action of the first lifting cylinder 431, the clamping cylinder 432 moves down to the clamping finger 433 to just clamp the lead wire. The clamping cylinder 432 is activated, and the clamping finger 433 clamps the lead wire 4100. The first lifting cylinder 431 controls the clamping finger 433 to rise. Driven by other power devices, the translation slide moves along the walking track to transfer the lead wire to the battery welding station 10. Finally, the lifting hook plate 422 falls back to the original position, waiting to be prepared for clamping the next lead wire.

[0053] Working principle of terminal feeding mechanism 5:

[0054] The terminal 300 is fed into the entrance on the left side of the terminal of the feed guide groove 511 through a single-outlet vibration plate. Under the action of the pushing cylinder 531, the pushing rack 532 can push the terminal to the first terminal position 5211 of the terminal shift seat 521 and then return, waiting for the next terminal 300 to be sent to the terminal entrance of the feed guide groove 511; then, under the action of the terminal shift cylinder 522, the terminal shift seat 521 moves to the right, so that the second terminal position 5212 is translated to the position of the first terminal position 5211. Under the action of the pushing cylinder 531, the pushing rack 532 pushes the terminal 300 to the second terminal position 5212 and then returns, waiting for the next cycle of action, thereby completing a loading action of the terminal shift seat 21.

[0055] The manipulator gripping mechanism 55 is now in Fig.11 As shown in M, the two terminal grasping robots 554 are located above the first terminal position 211 and the second terminal position 212. At this time, the terminal clamping fingers are in an open state. Under the action of the second lifting cylinder 552, the terminal clamping fingers move downward, and the open fingers wrap around the terminal cylinder. The terminal clamping cylinder is activated to clamp the terminal.

[0056] The second lifting cylinder 552 rises, driving the terminal 300 to rise to the position. The translation cylinder 542 moves, controlling the manipulator gripping mechanism 5 to move to Fig.11At the position N shown, the terminal is translated to the top of the welding position, and then the second lifting cylinder 52 controls the terminal grabbing manipulator 54 to descend, and the terminal is sent to the battery welding station 10. At this time, the terminal gripping fingers do not move, and the terminal welding process is kept still and does not shift, and is released after the welding is completed. Finally, the second lifting cylinder 552 rises, driving the terminal grabbing manipulator 554 with its fingers open to rise, and the translation cylinder 542 moves again, controlling the manipulator gripping mechanism 55 to reset to Fig.11 At M shown, the two terminal grasping manipulators 554 with open fingers are located above the first terminal position 5211 and the second terminal position 5212, waiting for the action of the next cycle.

[0057] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A lead-acid battery busbar welding system using argon arc welding, characterized in that: The invention comprises a battery conveying line (1), a battery positioning mechanism (2), a welding mold (3), and a solder feeding mechanism (4); the battery conveying line (1) is provided with a loading station (11), a battery welding station (10), and a unloading station (14) in sequence along its conveying direction; the battery welding station (10) is provided with a battery positioning mechanism (2) for positioning a battery (100); a welding mold (3) is provided above the battery positioning mechanism (2); the welding mold (3) clamps a battery pole ear when the mold is closed, and forms a welding cavity above the battery pole ear that can accommodate solder (200); the solder feeding mechanism (4) is used to feed the solder (200) into the welding cavity above the battery pole ear to be welded; the battery welding A argon arc welding machine is provided on one side of the workstation (10). The argon arc welding machine is equipped with a movable welding gun. The argon arc welding machine heats the solder (200) and the tab by a large current discharge effect generated by the welding gun, and melts the solder (200) and the upper end of the tab into one body to form a bus. The battery welding workstation (10) comprises a first welding workstation (12) and a second welding workstation (13). The welding mold (3) comprises a first welding mold assembly (31) and a second welding mold assembly (32) respectively arranged above the first welding workstation (12) and the second welding workstation (13). The first welding mold assembly (31) is provided with a movable right comb-shaped mold (311) and a movable right closing mold (312). The right comb-shaped mold (31 1) When the right clamping plate (312) is moved to the mold of the two clamping plates, a welding cavity capable of accommodating solder (200) is formed between the two. The second welding mold assembly (32) is provided with a movable left comb-shaped mold (321) and a movable left clamping plate (322). When the left comb-shaped mold (321) is moved to the left clamping plate (322) to the mold of the two clamping plates, a plurality of welding cavities capable of accommodating solder (200) are formed between the two. The second welding mold assembly (32) is also provided with two terminal positioning grooves (35) for accommodating terminals (300). The two terminal positioning grooves (35) are respectively arranged on the outer sides of the two cavity units. The second welding mold assembly (32) also includes a terminal feeding mechanism (5). The terminal feeding mechanism (5) includes a terminal feeding seat (5 1), a double-station loading mechanism (52), a pushing mechanism (53), a manipulator walking seat (54) and a manipulator clamping mechanism (55), the terminal feeding seat (51) is provided with a feeding guide groove (511), the feeding guide groove (511) is provided with a movable double-station loading mechanism (52) at one end close to the outlet, the double-station loading mechanism (52) is provided with a first terminal position (5211) and a second terminal position (5212), the pushing mechanism (53) is provided with a pushing frame (532) movable along the length direction of the feeding guide groove (511), the pushing frame (532) is used to push the terminal (300) in the feeding guide groove (511) to the first terminal position (5211) and the second terminal position (5212),A manipulator gripping mechanism (55) movable along its length direction is provided below the manipulator walking seat (54); the manipulator gripping mechanism (55) is located above the double-station feeding mechanism (52); two elevating terminal gripping manipulators (554) are provided below the manipulator gripping mechanism (55) for gripping the terminals (300) at the first terminal position (5211) and the second terminal position (5212), and conveying them to the battery welding station (10).

2. A lead-acid battery busbar welding system using argon arc welding as claimed in claim 1, characterized in that: The right comb-shaped mold (311) and the left comb-shaped mold (321) each have a plurality of comb-shaped grooves capable of accommodating battery tabs on one side, the comb-shaped grooves being arranged at intervals, and two comb-shaped grooves being separated by comb-shaped teeth (33), and a cavity groove (3310) being provided above the comb-shaped grooves, and a plurality of bosses (34) being provided at intervals in the cavity groove (3310), and when the first welding mold assembly (31) or the second welding mold assembly (32) is molded together, the bosses (34) divide the welding cavity into a plurality of independent cavity units.

3. A lead-acid battery busbar welding system using argon arc welding as claimed in claim 1, characterized in that: The solder feeding mechanism (4) comprises an arrangement bevel table (41), a lifting mechanism (42) and a feeding mechanism (43); the upper end surface of the arrangement bevel table (41) has an arrangement channel (410) through which the solder (200) can pass; the arrangement channel (410) is inclined, and a lifting mechanism (42) is provided at the lower end; a movable lifting hook plate (422) is provided on the lifting mechanism (42); a movable gripping finger (433) is provided on the feeding mechanism (43) for gripping the solder (200); the feeding mechanism (43) is movably arranged on a solder conveying slide rail; the feeding mechanism (43) can move along the solder conveying slide rail to move the gripping finger (433) to the battery welding station (10).

4. A lead-acid battery busbar welding system using argon arc welding as claimed in claim 1, characterized in that: It also includes a gas supply device for providing a shielding gas, wherein the gas supply device outputs shielding gas to isolate the welding area from contact with air during welding, and the shielding gas is argon gas.

5. A lead-acid battery busbar welding system using argon arc welding as claimed in claim 1, characterized in that: The battery positioning mechanism (2) comprises a movable push frame having a U-shaped opening, a flat baffle plate arranged opposite the movable push frame, and an auxiliary power mechanism for driving the movable push frame to move, the U-shaped opening matches the size of the outer frame of the battery (100), a space for accommodating the battery (100) is provided between the movable push frame and the flat baffle plate, and under the push of the movable push frame, two sides of the battery (100) respectively abut against the flat baffle plate and the movable push frame, so that the battery (100) is fixed between the flat baffle plate and the U-shaped opening.

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