An ultrasonic welding apparatus for battery production

Abstract

The application provides an ultrasonic welding device for battery production, which comprises a base, a conveying unit, a detection unit, two groups of ultrasonic pre-welding units, two groups of ultrasonic final welding units and two groups of cutting units are arranged on the base; each processing unit on the ultrasonic welding device is integrated with reasonable structure, the feeding and discharging are carried out at the same position, and the short circuit detection before processing and the short circuit detection after processing are realized by the same detection unit, which can quickly know whether the quality problem of the product exists before processing or is generated in the processing process, and the quality problem is convenient for rapid troubleshooting and maintenance, so as to improve the yield; in addition, when different models and sizes of batteries need to be processed, only the corresponding structure of the carrier needs to be replaced and the position positioning of the left work station and the right work station needs to be adjusted, so that the processing can be realized, and the position adjustment of the ultrasonic pre-welding unit, the ultrasonic final welding unit and the cutting unit is not needed, and the device has high universality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production, in particular to an ultrasonic welding device for battery production. BACKGROUND

[0002] Batteries play an important role in new energy vehicles, and during the production process, the tabs need to be welded, cut and shaped for processing. At present, most of the processes for processing tabs are carried out independently by different equipment, which has low production efficiency. A small part of the processes for processing tabs are integrated by automatic or semi-automatic equipment, but the processing quality of the automatic or semi-automatic equipment is unstable, the product yield is low, and it is not conducive to improving the production capacity of batteries. In addition, the integrated structure of the current automatic or semi-automatic equipment is complex, and the versatility is low. When different models and sizes of batteries need to be processed, most of the processing mechanisms on the equipment need to be adjusted, which is troublesome. SUMMARY

[0003] Therefore, the present application provides an ultrasonic welding device for battery production, which can solve the above problems to some extent.

[0004] The technical scheme of the present application is as follows:

[0005] An ultrasonic welding device for battery production, the battery comprising a battery cell and tabs located on both sides of the battery cell, the ultrasonic welding device comprising:

[0006] A machine base, the machine base being provided with a conveying unit, a detection unit, two groups of ultrasonic pre-welding units, two groups of ultrasonic final welding units and two groups of cutting units;

[0007] The conveying unit comprises a conveying table and a first moving assembly for driving the conveying table to move in a first direction; the conveying table is provided with a transverse moving table and a second moving assembly for driving the transverse moving table to move in a second direction, the transverse moving table is provided with a carrier for placing the battery cell; the carrier moves between three positions on the conveying table, which are defined as an intermediate station, a left station and a right station in the second direction; the first direction and the second direction are two directions perpendicular to each other;

[0008] The detection unit is arranged on the moving path of the carrier in the first direction and corresponds to the intermediate station, and the detection unit is used for short circuit detection of the battery;

[0009] The two groups of ultrasonic pre-welding units are arranged on both sides of the conveying unit in the first direction respectively, and the ultrasonic pre-welding unit is used for ultrasonic pre-welding of the tabs; the two groups of ultrasonic pre-welding units correspond to the left station and the right station respectively;

[0010] The two groups of ultrasonic welding units are respectively arranged on the two sides of the conveying unit along the first direction, and the ultrasonic welding units are used for ultrasonic complete welding of the tabs; the two groups of ultrasonic welding units correspond to the left station and the right station respectively;

[0011] The two groups of cutting units are respectively arranged on the two sides of the conveying unit along the first direction, and the cutting units are used for cutting and shaping the tabs; the two groups of cutting units correspond to the left station and the right station respectively;

[0012] When the battery is conveyed along the first direction, the battery is first subjected to first short-circuit detection by the detection unit at the initial position in the first direction, then subjected to pre-welding by the ultrasonic pre-welding unit, then subjected to complete welding by the ultrasonic complete welding unit, then subjected to cutting and shaping by the cutting unit, and finally returned to the initial position for second short-circuit detection by the detection unit.

[0013] As a further optional solution of the ultrasonic welding device for battery production, the carrier includes a bottom die and a top cover, the bottom die is provided with a cavity for placing the battery cell, and the top cover is used to press the battery cell on the bottom die, and the tabs extend from between the bottom die and the top cover; in this way, the position of the battery cell and the tab is stable, and the position deviation caused by vibration during conveying or processing is avoided, so as to avoid affecting the processing quality;

[0014] The carrier is provided with an anti-sagging mechanism, the anti-sagging mechanism includes an air path formed in the bottom die, the air path is formed with a plurality of air outlets on the side of the bottom die corresponding to the tabs, and the plurality of air outlets are arranged equidistantly along the width direction of the tabs; the air path is connected with a blowing device, the blowing device provides compressed air for the air path, and the compressed air is obliquely blown from below to above to the bottom of the tab from the air outlets.

[0015] As a further optional solution of the ultrasonic welding device for battery production, the conveying unit further includes a locking mechanism for locking the bottom die and the top cover;

[0016] The locking mechanism includes two groups of limiting members movably arranged on the transverse moving table, and the two groups of limiting members are respectively located on the two sides of the carrier and are respectively driven to move by two groups of first air cylinders; the side surface of the limiting member is provided with a limiting block, and the limiting block is moved above the carrier or away from above the carrier by the first air cylinder;

[0017] The locking assembly further comprises a second cylinder for driving the bottom mold to lift, the bottom mold will press the top cover on the limit block bottom to realize the locking of the bottom mold and the top cover.

[0018] As a further optional solution of the ultrasonic welding device for battery production, the bottom of the top cover is provided with a positioning column, and the top of the bottom mold is provided with a positioning hole for the positioning column to insert;

[0019] The two sides of the bottom mold are provided with first clamping pieces, and the two sides of the top cover are provided with second clamping pieces, when the top cover covers the bottom mold, a small gap is formed between the first clamping pieces and the second clamping pieces, just for the tab to pass through, and the first clamping pieces and the second clamping pieces are clamped at the root position of the tab close to the battery cell;

[0020] The height position of the first clamping piece on the bottom mold is adjustable, or / and the height position of the second clamping piece on the bottom mold is adjustable.

[0021] As a further optional solution of the ultrasonic welding device for battery production, three sensors are arranged in a second direction on the conveying table, and a sensing sheet for being detected by the three sensors is arranged on the transverse moving table, when the sensing sheet corresponds to the three sensors respectively, the carrier on the transverse moving table corresponds to the left station, the middle station and the right station.

[0022] As a further optional solution of the ultrasonic welding device for battery production, the ultrasonic pre-welding unit, the ultrasonic final welding unit and the cutting unit are arranged on the machine base through a transfer adjusting mechanism;

[0023] The transfer adjusting mechanism comprises a base body, two first guide rails are arranged in parallel and in a second direction on the base body, a coarse adjustment support is arranged on the base body, a guide block is arranged at the bottom of the coarse adjustment support, and the guide block is in sliding fit with the first guide rail; a movable fine adjustment support and a fine adjustment mechanism for moving the fine adjustment support are arranged on the coarse adjustment support; the ultrasonic pre-welding unit, the ultrasonic final welding unit and the cutting unit are arranged on the fine adjustment support;

[0024] The fine adjustment mechanism comprises a threaded adjusting rod, the threaded adjusting rod is rotatably arranged at the bottom of the coarse adjustment support through two mounting blocks, a connecting block is threadedly connected to the threaded adjusting rod, the connecting block penetrates through the coarse adjustment support and is connected to the bottom of the fine adjustment support; one end of the threaded adjusting rod is provided with a hand wheel;

[0025] The top surface of the coarse adjustment support platform is not in contact with the bottom surface of the fine adjustment support platform, both sides of the base body are provided with support bodies, and a rotatable roller is arranged on the fine adjustment support platform and abuts against the top of the support body.

[0026] As a further optional solution of the ultrasonic welding device for battery production, the outer side of the coarse adjustment support platform is provided with a first locking plate, the first locking plate is provided with a strip-shaped hole, the outer side of the base body is provided with a plurality of first locking holes arranged in an array, a first locking screw passes through the strip-shaped hole of the first locking plate and is threadedly connected to the first locking hole, so as to fix the coarse adjustment support platform;

[0027] The outer side of the fine adjustment support platform is provided with a second locking plate, the second locking plate is provided with a strip-shaped hole, the outer side of the base body is provided with a plurality of second locking holes arranged in an array, a second locking screw passes through the strip-shaped hole of the second locking plate and is threadedly connected to the second locking hole, so as to fix the fine adjustment support platform; and the roller is arranged on the second locking plate.

[0028] As a further optional solution of the ultrasonic welding device for battery production, the maintenance vehicle is further included;

[0029] At least two butt joints are arranged at the rear of the base body of the intermediate adjustment mechanism;

[0030] The maintenance vehicle is provided with a second guide rail and a butt joint column for being inserted into the butt joint, when the butt joint column is inserted into the butt joint, the end of the second guide rail is butted with the end of the first guide rail;

[0031] Both sides of the base body are provided with buckling blocks, and the maintenance vehicle is provided with a buckle for buckling the buckling blocks, so as to lock the maintenance vehicle and the base body.

[0032] As a further optional solution of the ultrasonic welding device for battery production, the cutting unit includes a cutting rack, the cutting rack is provided with an upper cutting knife and a lower cutting knife arranged in an upper and lower mode, the upper cutting knife is arranged on a lifting seat, and the lifting seat is driven to lift by a first lifting assembly; the upper cutting knife and the lower cutting knife are staggered to realize shearing of the tab;

[0033] The lower cutting knife is arranged on a cutting support table, the cutting support table is arranged on the cutting rack, the cutting support table has a support surface for supporting the tab, a plurality of suction holes are arranged on the support surface, and the suction holes are connected with a suction device to suck the tab placed on the support surface;

[0034] The cutting unit further comprises an auxiliary flattening mechanism, the auxiliary flattening mechanism comprises a connecting base block fixedly arranged on the lifting seat, a slide rod is sleeved on the connecting base block in a sliding manner, a flattening pressing plate is connected to the bottom of the slide rod, a blocking block is arranged on the top of the slide rod, a spring for driving the flattening pressing plate away from the connecting base block is sleeved on the slide rod, one end of the spring abuts against the flattening pressing plate, and the other end of the spring abuts against the connecting base block; in a natural state, the height position of the flattening pressing plate is lower than the height position of the upper cutting knife, when the lifting seat is lowered, the flattening pressing plate is first pressed on the supporting surface on the cutting support table, and then the upper cutting knife and the lower cutting knife stagger to cut the tabs;

[0035] The cutting unit further comprises a collection box for receiving the waste cut from the tabs.

[0036] As a further optional solution of the ultrasonic welding device for battery production, the ultrasonic final welding unit comprises a bending welding mechanism and a longitudinal vibration welding mechanism;

[0037] The bending welding mechanism comprises a first welding head, a first amplitude rod assembly and a first transducer; the first transducer is coaxially connected with the first amplitude rod assembly, the first amplitude rod assembly is connected to the side of the first welding head, and the axis of the first amplitude rod assembly is perpendicular to the axis of the first welding head; one end of the first welding head has a first welding surface, the first welding surface is perpendicular to the axis of the first welding head; the bending welding mechanism is driven to lift by a second lifting assembly, and the second lifting assembly provides coaxial driving force for the first welding head;

[0038] The longitudinal vibration welding mechanism comprises a second welding head, a second amplitude rod assembly and a second transducer; the second transducer is coaxially connected with the second amplitude rod assembly, and the second amplitude rod assembly is coaxially connected with the second welding head; the side of the second welding head has a second welding surface, and the second welding surface is parallel to the axis of the second welding head; the second welding surface is arranged opposite to the first welding surface;

[0039] The ultrasonic final welding unit further comprises a first dust collection mechanism.

[0040] As a further optional solution of the ultrasonic welding device for battery production, the ultrasonic pre-welding unit comprises a multi-point pre-welding mechanism and a welding table, the multi-point pre-welding mechanism comprises a third welding head, a third amplitude rod assembly and a third transducer, a plurality of welding convex points are protruded on the third welding head, and the tabs are pressed on the welding table through the welding convex points to realize pre-welding; the multi-point pre-welding mechanism is driven to lift by a third lifting assembly;

[0041] The ultrasonic pre-welding unit further comprises a second dust collection mechanism.

[0042] As a further optional solution of the ultrasonic welding device for battery production, the detection unit comprises a liftable detection frame, two metal detection heads are arranged on the detection frame and spaced apart along the second direction, and the metal detection heads are electrically connected with the short circuit detector; the distance between the two metal detection heads is adjustable, and the two metal detection heads are distributed corresponding to the tabs on both sides of the battery cell;

[0043] The detection unit further comprises two support frames respectively located on both sides of the conveying unit along the first direction, and the support frames are provided with pads for supporting the tabs, and the pads are correspondingly located below the metal detection heads; the distance between the two pads is adjustable.

[0044] The beneficial effects of the present application are: the machining units on the ultrasonic welding device are integrated with reasonable structure, the feeding and discharging are carried out at the same position, and the short circuit detection before processing and the short circuit detection after processing are realized by the same detection unit, which on the one hand makes the structure more compact, and on the other hand can quickly know whether the product is a quality problem existing before processing or a quality problem generated in the processing process, so as to facilitate quick troubleshooting and maintenance, so as to improve the yield; in addition, when different models and sizes of batteries need to be processed, only the corresponding structure of the carrier needs to be replaced and the position of the left work station and the right work station needs to be adjusted, so that the production and processing can be realized, and the ultrasonic pre-welding unit, the ultrasonic final welding unit and the cutting unit do not need to be adjusted in position, and the equipment has strong versatility. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 It is a structural schematic view of the ultrasonic welding device for battery production of the present application;

[0046] Figure 2 It is a top view schematic view of the ultrasonic welding device for battery production of the present application;

[0047] Figure 3 It is a structural schematic view of the conveying unit;

[0048] Figure 4 It is an exploded schematic view of the conveying unit;

[0049] Figure 5 It is an exploded schematic view of the carrier;

[0050] Figure 6 It is a sectional view schematic view of the carrier;

[0051] Figure 7 It is a structural schematic view of the detection unit;

[0052] Figure 8 It is a connection schematic view of the metal detection head and the detection frame;

[0053] Figure 9 Structure diagram of the ultrasonic pre-welding unit provided on the transfer adjusting mechanism;

[0054] Figure 10 Structure diagram of the ultrasonic pre-welding unit;

[0055] Figure 11 Structure diagram of the ultrasonic final-welding unit provided on the transfer adjusting mechanism;

[0056] Figure 12 Structure diagram of the ultrasonic final-welding unit;

[0057] Figure 13 Structure diagram of the cutting unit provided on the transfer adjusting mechanism;

[0058] Figure 14 Structure diagram of the cutting unit;

[0059] Figure 15 Structure diagram of the cutting support table;

[0060] Figure 16 Side view diagram of the cutting unit;

[0061] Figure 17 Structure diagram of the transfer adjusting mechanism;

[0062] Figure 18 Exploded diagram of the transfer adjusting mechanism;

[0063] Figure 19 Structure diagram of the maintenance vehicle.

[0064] In the figure: 100, battery cell; 200, tab;

[0065] 1, machine base;

[0066] 2, conveying unit; 21, conveying table; 22, first moving assembly; 23, transverse moving table; 231, inductive sheet; 24, second moving assembly; 25, carrier; 251, bottom die; 2511, first clamping piece; 2512, positioning hole; 252, top cover; 2521, second clamping piece; 2522, positioning column; 26, sensor; 27, locking mechanism; 271, limiting piece; 2711, limiting block; 272, first air cylinder; 273, second air cylinder; 28, anti-sagging mechanism; 281, air path; 282, air outlet hole;

[0067] 3, detection unit; 31, detection frame; 311, metal detection head; 32, support frame; 321, cushion block;

[0068] 4, ultrasonic pre-welding unit; 41, multi-point pre-welding mechanism; 411, third welding head; 412, third transducer; 42, welding table; 43, third lifting assembly; 44, second dust collection mechanism;

[0069] 5, ultrasonic final welding unit; 51, bending welding mechanism; 511, first welding head; 512, first amplitude rod assembly; 513, first transducer; 52, longitudinal vibration welding mechanism; 521, second welding head; 522, second amplitude rod assembly; 523, second transducer; 53, second lifting assembly; 54, first dust collection mechanism;

[0070] 6, cutting unit; 61, cutting frame; 62, upper cutter; 63, lower cutter; 64, lifting seat; 65, first lifting assembly; 66, cutting support table; 661, adsorption hole; 67, auxiliary leveling mechanism; 671, connecting base block; 672, sliding rod; 673, leveling pressing plate; 674, blocking block; 675, spring; 68, collection box;

[0071] 7, transfer adjustment mechanism; 71, base body; 711, first guide rail; 712, first lock hole; 713, second lock hole; 714, support body; 715, butt joint hole; 716, buckle block; 72, coarse adjustment support; 721, guide block; 722, first locking plate; 723, first locking screw; 73, fine adjustment support; 731, roller; 732, second locking plate; 733, second locking screw; 74, fine adjustment mechanism; 741, threaded adjustment rod; 742, mounting block; 743, connecting block; 744, hand wheel;

[0072] 8, maintenance vehicle; 81, second guide rail; 82, butt joint column; 83, buckle;

[0073] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0074] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0075] REFERENCE Figure 1 and Figure 2 , shows an ultrasonic welding device for battery production, comprising a base 1, the base 1 is provided with a conveying unit 2, a detection unit 3, two groups of ultrasonic pre-welding units 4, two groups of ultrasonic final welding units 5 and two groups of cutting units 6; the battery comprises a battery cell 100 and a tab 200 on both sides of the battery cell 100, the tabs 200 on both sides are positive tabs 200 and negative tabs 200 respectively;

[0076] Reference Figure 2-5 The conveying unit 2 comprises a conveying table 21 and a first moving assembly 22 for driving the conveying table 21 to move along a first direction X; the conveying table 21 is provided with a transverse moving table 23 and a second moving assembly 24 for driving the transverse moving table 23 to move along a second direction Y, the transverse moving table 23 is provided with a carrier 25 for placing the battery cell 100; the carrier 25 is switched between three positions on the conveying table 21, which are defined as the middle station, the left station and the right station along the second direction Y; the first direction X and the second direction Y are two directions perpendicular to each other;

[0077] The detection unit 3 is arranged on the moving path of the carrier 25 along the first direction X and corresponds to the middle station, and the detection unit 3 is used for short circuit detection of the battery; the two groups of ultrasonic pre-welding units 4 are arranged on both sides of the conveying unit 2 along the first direction X, and the ultrasonic pre-welding unit 4 is used for ultrasonic pre-welding of the tab 200; the two groups of ultrasonic pre-welding units 4 correspond to the left station and the right station respectively; the two groups of ultrasonic final welding units 5 are arranged on both sides of the conveying unit 2 along the first direction X, and the ultrasonic final welding unit 5 is used for ultrasonic complete welding of the tab 200; the two groups of ultrasonic final welding units 5 correspond to the left station and the right station respectively; the two groups of cutting units 6 are arranged on both sides of the conveying unit 2 along the first direction X, and the cutting unit 6 is used for cutting and shaping the tab 200; the two groups of cutting units 6 correspond to the left station and the right station respectively;

[0078] In other words, when the battery is conveyed along the first direction X, it can be transferred between the detection unit 3, the ultrasonic pre-welding unit 4, the ultrasonic final welding unit 5 and the cutting unit 6; when the battery moves along the second direction Y, the positive tab 200 can be processed or the negative tab 200 can be processed.

[0079] Specifically, in actual application, the battery is placed on the carrier 25, the battery cell 100 is fixed by the carrier 25, and the positive and negative tabs 200 are distributed on both sides along the first direction X; in the initial position, the carrier 25 is located in the middle station, and the first short circuit detection is performed by the detection unit 3, then the carrier 25 moves along the first direction X, so that the battery moves to the position between the two groups of ultrasonic pre-welding units 4, at this time, the transverse moving table 23 moves along the second direction Y, so that the carrier 25 drives the battery to move to the left station, so that the negative tab 200 of the battery is correspondingly placed on the processing position of one group of ultrasonic pre-welding units 4, after processing, the battery is driven to move to the right station, so that the positive tab 200 of the battery is correspondingly placed on the processing position of the other group of ultrasonic pre-welding units 4, so as to complete the ultrasonic pre-welding of the positive and negative tabs 200; wherein, the left station can correspond to process the positive tab 200, and the right station can correspond to process the negative tab 200; in addition, the processing logic of the ultrasonic final welding unit 5 and the cutting unit 6 is the same as that of the ultrasonic pre-welding unit 4, so as to complete the pre-welding, final welding and cutting processing of the tabs 200 on both sides of the battery cell 100, then the carrier 25 drives the battery to return to the initial position, and the second short circuit detection is performed by the detection unit 3, so as to complete the processing.

[0080] In this way, the processing units on the ultrasonic welding equipment are integrated in a reasonable structure, the feeding and discharging are performed at the same position, and the short circuit detection before processing and the short circuit detection after processing are realized by the same detection unit 3, which can quickly know whether the product quality problem exists before processing or is generated in the processing process, so as to facilitate rapid troubleshooting, so as to improve the yield; in addition, when different models and sizes of batteries need to be processed, only the carrier 25 with a corresponding structure needs to be replaced and the position positioning of the left station and the right station needs to be adjusted, so that the production and processing can be realized, and the position adjustment of the ultrasonic pre-welding unit 4, the ultrasonic final welding unit 5 and the cutting unit 6 is not needed, so that the equipment has strong versatility.

[0081] The above scheme is specifically Figure 3 and Figure 4 Three sensors 26 arranged along the second direction Y are arranged on the conveying table 21, and an inductive sheet 231 for being detected by the three sensors 26 is arranged on the transverse moving table 23, when the inductive sheet 231 corresponds to the three sensors 26 respectively, the carrier 25 on the transverse moving table 23 corresponds to the left station, the middle station and the right station. When the positions of the left station and the right station need to be adjusted, only the installation positions of the two sensors 26 need to be adjusted, which is simple and fast, and can realize the rapid adjustment of the equipment, so as to facilitate the equipment to process different batches of batteries.

[0082] In an embodiment, referring to Figure 3-6 , the carrier 25 comprises a bottom die 251 and a top cover 252, the bottom die 251 is provided with a cavity (not labeled in the figure) for placing the battery cell 100, the top cover 252 is used to press the battery cell 100 on the bottom die 251, and the tab 200 extends from between the bottom die 251 and the top cover 252; wherein the ultrasonic welding is by ultrahigh frequency vibration to generate welding energy, and the tab 200 is composed of a plurality of metal foil sheets stacked together, and the tab 200 will generate metal dust during ultrasonic welding, and if a certain amount of metal dust adheres to the battery cell 100 or enters the inside of the battery cell 100, it will affect the quality of the battery, therefore, the bottom die 251 and the top cover 252 are used to wrap the battery cell 100 in this embodiment, on the one hand, it can make the position of the battery cell 100 stable, avoid the position deviation during movement, and cause the processing position of the tab 200 to be inaccurate; on the other hand, it can reduce the metal dust adhering to the battery cell 100 or entering the inside of the battery cell 100, thereby improving the yield of the battery.

[0083] Preferably, referring to Figure 5 and Figure 6 , the carrier 25 is provided with an anti-sag mechanism 28, the anti-sag mechanism 28 comprises an air path 281 formed in the bottom die 251, a plurality of air outlets 282 are formed on the side of the bottom die 251 corresponding to the position of the tab 200, and the plurality of air outlets 282 are arranged equidistantly along the width direction of the tab 200; the air path 281 is connected with a blowing device, and the blowing device provides compressed air for the air path 281, and the compressed air is obliquely blown from below to above to the bottom of the tab 200 from the air outlets 282. In this way, on the one hand, the bottom of the tab 200 can be provided with support force by the compressed air, avoiding the sagging of the tab 200 during movement, and causing the processing position of the subsequent processing to be inaccurate; on the other hand, the compressed air is blown from the position of the battery cell 100 to the position of the tab 200, i.e. from inside to outside, which can make the air produce disturbance from inside to outside, so that the metal dust is not easy to float to the position of the battery cell 100 in the direction of air disturbance.

[0084] Preferably, referring to Figure 3 and Figure 4The conveying unit 2 further comprises a locking mechanism 27 for locking the bottom die 251 and the top cover 252; specifically, the locking mechanism 27 comprises two groups of limiting members 271 horizontally movably arranged on the transverse moving table 23, and the two groups of limiting members 271 are respectively located on the two sides of the carrier 25 and are respectively driven to move by two groups of first air cylinders 272; the side surface of the limiting member 271 is provided with a limiting block 2711, and the limiting block 2711 is moved above or away from the carrier 25 by the first air cylinder 272; the locking assembly further comprises a second air cylinder 273 for driving the bottom die 251 to ascend and descend, and the bottom die 251 is driven to ascend by the second air cylinder 273, and the bottom die 251 presses the top cover 252 against the bottom of the limiting block 2711 to realize the locking of the bottom die 251 and the top cover 252.

[0085] Wherein, the battery cell 100 can be manually placed into the cavity of the bottom die 251 and then the top cover 252 is covered, or the operation can be performed by a mechanical hand or other automatic mechanism; after the battery cell 100 is placed into the carrier 25, the first air cylinder 272 drives the limiting member 271 to move, so that the limiting block 2711 moves above the carrier 25, and then the second air cylinder 273 drives the carrier 25 to ascend, and the bottom die 251 presses the top cover 252 against the bottom of the limiting block 2711 to realize the locking of the bottom die 251 and the top cover 252. When the battery is finished processing, the second air cylinder 273 drives the carrier 25 to descend, and the first air cylinder 272 drives the limiting member 271 to move away from the carrier 25, so that the limiting block 2711 moves away from above the carrier 25, and then the top cover 252 can be opened and the battery can be taken out, so that the feeding and discharging of the battery are realized.

[0086] Preferably, referring to Figure 5The top cover 252 is provided with a positioning column 2522 at the bottom, and the bottom die 251 is provided with a positioning hole 2512 for inserting the positioning column 2522, so that the top cover 252 and the bottom die 251 can be accurately matched. In addition, the bottom die 251 is provided with a first clamping piece 2511 on both sides, and the top cover 252 is provided with a second clamping piece 2521 on both sides. When the top cover 252 covers the bottom die 251, a small gap is formed between the first clamping piece 2511 and the second clamping piece 2521, just for the tab 200 to pass through, and the first clamping piece 2511 and the second clamping piece 2521 are clamped at the root position of the tab 200 close to the battery cell 100. In this way, the first clamping piece 2511 and the second clamping piece 2521 are used to clamp the tab 200. On the one hand, the root of the multiple metal foils is clamped and is not easy to wrinkle or scatter. On the other hand, metal dust can be prevented from entering the cavity of the bottom die 251, greatly reducing the probability of metal dust adhering to the battery cell 100 or entering the inside of the battery cell 100, and effectively improving the processing quality of the battery. In order to clamp the tab 200 with different thicknesses properly, the "just right" refers to not damaging the metal foil and minimizing the gap width. At least one of the first clamping piece 2511 and the second clamping piece 2521 can adjust the height position, so as to adjust the gap size between the first clamping piece 2511 and the second clamping piece 2521. Figure 3 The second clamping piece 2521 is provided with a vertical strip hole (not labeled in the figure), and the top cover 252 is provided with a threaded hole (not shown in the figure). A screw (not shown in the figure) passes through the strip hole on the second clamping piece 2521 and is threadedly connected to the threaded hole on the top cover 252, so as to fix the second clamping piece 2521 on the top cover 252.

[0087] In an embodiment, referring to Figure 7 and Figure 8 The detection unit 3 includes a liftable detection frame 31, and the detection frame 31 is provided with two metal detection heads 311 spaced apart along the second direction Y. The metal detection heads 311 are electrically connected with a short circuit detector (not shown in the figure). The two metal detection heads 311 are distributed corresponding to the tabs 200 on both sides of the battery cell 100. Simply speaking, when the battery is located at the initial position, the detection frame 31 is lowered, so that the two metal detection heads 311 are in contact with the positive and negative tabs 200, thereby realizing short circuit detection. Since the battery does not need to be biased to the left or the right, the battery can be located at the intermediate station.

[0088] Preferably, the detection unit 3 further comprises two support frames 32 respectively located on two sides of the conveying unit 2 along the first direction X, the support frames 32 are provided with pads 321 for supporting the tabs 200, and the pads 321 are correspondingly located below the metal detection heads 311; in this way, the tabs 200 are supported by the pads 321, so that the tabs 200 are not bent when the metal detection heads 311 contact the tabs 200 downward, and the processing position of the tabs 200 in subsequent processing is accurate.

[0089] In addition, the distance between the two metal detection heads 311 is adjustable, and the distance between the two pads 321 is adjustable; so that when processing batteries of different sizes, the positions of the metal detection heads 311 and the pads 321 can be adjusted to correspond to the tabs 200 when the distance between the tabs 200 on both sides of the battery changes. Figure 8 In the embodiment, the metal detection heads 311 are installed through cooperation of bolts and strip-shaped holes, and the positions of the metal detection heads 311 can be adjusted by loosening the bolts when it is necessary to adjust the positions of the metal detection heads 311, which is simple and convenient.

[0090] In an embodiment, referring to Figure 9 and Figure 10 the ultrasonic pre-welding unit 4 comprises a multi-point pre-welding mechanism 41 and a welding table 42, the multi-point pre-welding mechanism 41 comprises a third welding head 411, a third amplitude rod assembly (not marked in the figure) and a third transducer 412, the third welding head 411 is provided with a plurality of welding convex points (not marked in the figure), and the tabs 200 are pressed on the welding table 42 through the welding convex points to realize pre-welding; the multi-point pre-welding mechanism 41 is driven to rise and fall by a third lifting assembly 43; wherein the tabs 200 are spot-welded by the welding convex points first, and since the welding area is small, the generated metal dust is not much, which does not have a significant impact on the battery cell 100; and since pre-welding is performed first, the gap between the multiple metal foils is small, and then final welding is performed, so that the generated metal dust is more difficult to enter the battery cell 100 from the gap between the metal foils, thereby avoiding affecting the battery cell 100; in addition, the ultrasonic pre-welding unit 4 further comprises a second dust collection mechanism 44, which can suck the metal dust during pre-welding, thereby further ensuring that the metal dust is prevented from adhering to or entering the battery cell 100.

[0091] In an embodiment, referring to Figure 11 and Figure 12, the ultrasonic terminal welding unit 5 includes a bending welding mechanism 51 and a longitudinal vibration welding mechanism 52; specifically, the bending welding mechanism 51 includes a first welding head 511, a first amplitude rod assembly 512, and a first transducer 513; the first transducer 513 is coaxially connected with the first amplitude rod assembly 512, the first amplitude rod assembly 512 is connected to the side of the first welding head 511, and the axis of the first amplitude rod assembly 512 is perpendicular to the axis of the first welding head 511; one end of the first welding head 511 has a first welding surface, which is perpendicular to the axis of the first welding head 511; the bending welding mechanism 51 is driven to rise and fall by a second lifting assembly 53, which provides coaxial driving force for the first welding head 511; the longitudinal vibration welding mechanism 52 includes a second welding head 521, a second amplitude rod assembly 522, and a second transducer 523; the second transducer 523 is coaxially connected with the second amplitude rod assembly 522, and the second amplitude rod assembly 522 is coaxially connected with the second welding head 521; the side of the second welding head 521 has a second welding surface, which is parallel to the axis of the second welding head 521; the second welding surface is arranged opposite to the first welding surface; wherein the driving force is directly transmitted to the first welding head 511, eliminating the welding reaction torque and realizing force-free torsional welding, so that the damage of the first welding head 511 to the metal foil is reduced and the yield is improved; the second welding head 521 is complementary to the first welding head 511, and the welding range of the second welding head 521 covers the welding zero point of the first welding head 511, so that the machining is completed in one welding, and the machining efficiency is effectively improved. In addition, the ultrasonic terminal welding unit 5 further includes a first dust collection mechanism 54, which can suck metal dust during terminal welding, further ensuring that metal dust is attached to or enters the battery cell 100.

[0092] In an embodiment, referring to Figure 13-16 , the cutting unit 6 includes a cutting rack 61, and an upper cutter 62 and a lower cutter 63 are arranged on the cutting rack 61; the upper cutter 62 is arranged on a lifting seat 64, and the lifting seat 64 is driven to rise and fall by a first lifting assembly 65; the upper cutter 62 and the lower cutter 63 are staggered to realize shearing of the tab 200;

[0093] The lower cutting knife 63 is arranged on a cutting support table 66, which is arranged on the cutting frame 61. The cutting support table 66 has a support surface for supporting the tab 200. A plurality of suction holes 661 are arranged on the support surface. The suction holes 661 are connected to a suction device to suck the tab 200 placed on the support surface. In this way, the tab 200 can be leveled and fixed, so that the state of the tab 200 is stable during cutting, and the tab 200 is prevented from being wrinkled during cutting, which causes uneven cutting.

[0094] Preferably, referring to Figure 16 , the cutting unit 6 further comprises an auxiliary leveling mechanism 67. The auxiliary leveling mechanism 67 comprises a connecting base block 671 fixedly arranged on the lifting seat 64. A sliding rod 672 is sleeved on the connecting base block 671. A leveling pressing plate 673 is connected to the bottom of the sliding rod 672. A blocking block 674 is arranged on the top of the sliding rod 672. A spring 675 is sleeved on the sliding rod 672 to drive the leveling pressing plate 673 to move away from the connecting base block 671. One end of the spring 675 abuts against the leveling pressing plate 673, and the other end abuts against the connecting base block 671. In a natural state, the height position of the leveling pressing plate 673 is lower than that of the upper cutting knife 62. When the lifting seat 64 is lowered, the leveling pressing plate 673 is first pressed on the support surface on the cutting support table 66, and then the upper cutting knife 62 and the lower cutting knife 63 cross-cut the tab 200. In this way, the tab 200 is further prevented from being wrinkled during cutting, which causes uneven cutting.

[0095] In addition, referring to Figure 13 and Figure 14 , the cutting unit 6 further comprises a collection box 68 to receive the waste cut from the tab 200.

[0096] In an embodiment, referring to Figure 1 , Figure 17 and Figure 18The ultrasonic pre-welding unit 4, the ultrasonic final-welding unit 5 and the cutting unit 6 are arranged on the machine base 1 through a transfer adjusting mechanism 7; the transfer adjusting mechanism 7 comprises a base body 71, the base body 71 is provided with two first guide rails 711 arranged in parallel and along the second direction Y, the base body 71 is provided with a coarse adjustment support 72, the coarse adjustment support 72 is provided with a guide block 721 at the bottom, the guide block 721 is in sliding fit with the first guide rail 711; the coarse adjustment support 72 is provided with a movable fine adjustment support 73 and a fine adjustment mechanism 74 for moving the fine adjustment support 73; the ultrasonic pre-welding unit 4, the ultrasonic final-welding unit 5 and the cutting unit 6 are arranged on the fine adjustment support 73; in this way, the position of the ultrasonic pre-welding unit 4, the ultrasonic final-welding unit 5 and the cutting unit 6 in the second direction Y can be adjusted by using the transfer adjusting mechanism 7, which facilitates the processing position of the ultrasonic pre-welding unit 4, the ultrasonic final-welding unit 5 and the cutting unit 6 on either side to be corresponded on a straight line parallel to the first direction X during initial equipment debugging, so that the battery can be correspondingly processed by the ultrasonic pre-welding unit 4, the ultrasonic final-welding unit 5 and the cutting unit 6 on the left side when the battery is in the left work station, and the same is true when the battery is in the right work station; when processing batteries of different sizes, only the distance between the tabs 200 of the new size battery and the old size battery is compared, and the distance of the two sensors 26 in the second direction Y is correspondingly moved, so that the battery can be correspondingly processed by the ultrasonic pre-welding unit 4, the ultrasonic final-welding unit 5 and the cutting unit 6 on the left side when the battery is in the left work station, and the same is true when the battery is in the right work station; the equipment debugging is simple and fast.

[0097] The above scheme is specifically described with reference to Figure 18 The fine adjustment mechanism 74 comprises a threaded adjusting rod 741, the threaded adjusting rod 741 is rotatably arranged at the bottom of the coarse adjustment support 72 through two mounting blocks 742, a connecting block 743 is threadedly connected to the threaded adjusting rod 741, the connecting block 743 penetrates through the coarse adjustment support 72 and is connected to the bottom of the fine adjustment support 73; one end of the threaded adjusting rod 741 is provided with a hand wheel 744; in this way, by using the screw rod principle, when the threaded adjusting rod 741 is rotated, the connecting block 743 moves along the axial direction of the threaded adjusting rod 741, and the fine adjustment support 73 moves synchronously with the connecting block 743; in addition, the top surface of the coarse adjustment support 72 and the bottom surface of the fine adjustment support 73 do not contact each other, both sides of the base body 71 are provided with support bodies 714, the fine adjustment support 73 is provided with a rotatable roller 731, and the roller 731 abuts against the top of the support body 714; thereby improving the smoothness of the movement of the fine adjustment support 73. In this embodiment, the coarse adjustment support 72 is used for rough position adjustment, and the fine adjustment support 73 is used for position fine adjustment, which not only has fast adjustment speed, but also has high accuracy.

[0098] Specifically, to facilitate the fixing of the positions of the coarse adjustment platform 72 and the fine adjustment platform 73, the above scheme is referenced. Figure 18 The coarse adjustment support 72 has a first locking plate 722 on its outer side, with a strip-shaped hole on the first locking plate 722. The outer side of the base 71 has a plurality of first locking holes 712 arranged in an arrangement. A first locking screw 723 passes through the strip-shaped hole on the first locking plate 722 and is threaded to the first locking hole 712 to fix the coarse adjustment support 72. The fine adjustment support 73 has a second locking plate 732 on its outer side, with a strip-shaped hole on the second locking plate 732. The outer side of the base 71 has a plurality of second locking holes 713 arranged in an arrangement. A second locking screw 733 passes through the strip-shaped hole on the second locking plate 732 and is threaded to the second locking hole 713 to fix the fine adjustment support 73. The roller 731 is disposed on the second locking plate 732.

[0099] In addition, since multiple processing mechanisms are integrated on the same equipment, the structure is compact, making it difficult to repair or replace them when problems occur. In this embodiment, the transfer adjustment mechanism 7 can facilitate the repair and replacement of the ultrasonic pre-welding unit 4, the ultrasonic final welding unit 5, and the cutting unit 6.

[0100] In one embodiment, reference Figure 1 , Figure 2 The ultrasonic welding equipment also includes a maintenance vehicle 8; see also... Figure 18 At least two docking holes 715 are provided at the rear of the base 71 on the transfer adjustment mechanism 7; referring to... Figure 19 The maintenance vehicle 8 is equipped with a second guide rail 81 and a docking post 82 for inserting into the docking hole 715. When the docking post 82 is inserted into the docking hole 715, the end of the second guide rail 81 mates with the end of the first guide rail 711. The base 71 has fastening blocks 716 on both sides, and the maintenance vehicle 8 has latches 83 for fastening the fastening blocks 716, thereby locking the maintenance vehicle 8 to the base 71. In this way, the transfer adjustment mechanism 7 can cooperate with the maintenance vehicle 8, allowing the coarse adjustment platform 72 to slide along the first guide rail 711 onto the second guide rail 81, i.e., to move from the base 71 to the maintenance vehicle 8, enabling rapid transfer of the ultrasonic pre-welding unit 4, the ultrasonic final welding unit 5, and the cutting unit 6, facilitating maintenance and replacement.

[0101] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ultrasonic welding device for battery production, the battery comprising a cell and tabs located on both sides of the cell, the tabs on both sides being a positive tab and a negative tab, respectively; characterized in that, include: The machine base is equipped with a conveying unit, a detection unit, two sets of ultrasonic pre-welding units, two sets of ultrasonic final welding units, and two sets of cutting units. The conveying unit includes a conveying platform and a first moving component for driving the conveying platform to move along a first direction; the conveying platform is provided with a transverse platform and a second moving component for driving the transverse platform to move along a second direction, and the transverse platform is provided with a carrier for placing battery cells; the carrier moves and switches between three positions on the conveying platform, which are defined as the middle station, left station, and right station according to the second direction; the first direction and the second direction are two mutually perpendicular directions; The detection unit is disposed on the moving path of the carrier along the first direction and corresponds to the intermediate station. The detection unit is used for short circuit detection of the battery. The two sets of ultrasonic pre-welding units are respectively arranged on both sides of the conveying unit along the first direction. The ultrasonic pre-welding units are used to perform ultrasonic pre-welding on the electrode tabs. The two sets of ultrasonic pre-welding units correspond to the left station and the right station, respectively. The two sets of ultrasonic final welding units are respectively arranged on both sides of the conveying unit along the first direction. The ultrasonic final welding units are used to perform ultrasonic complete welding on the electrode tabs. The two sets of ultrasonic final welding units correspond to the left station and the right station, respectively. The two sets of cutting units are respectively arranged on both sides of the conveying unit along the first direction, and the cutting units are used to cut and shape the electrode tabs; the two sets of cutting units correspond to the left station and the right station respectively; When the battery is transported along the first direction, it is first short-circuited by the detection unit at the initial position in the first direction, then pre-welded by the ultrasonic pre-welding unit, then fully welded by the ultrasonic final welding unit, then cut and shaped by the cutting unit, and finally returned to the initial position for a second short-circuit test by the detection unit. The carrier includes a bottom mold and a top cover. The bottom mold has a cavity for placing the battery cell, and the top cover is used to press the battery cell onto the bottom mold. The electrode tab extends from between the bottom mold and the top cover. The carrier is equipped with an anti-sagging mechanism, which includes an air passage formed within the bottom mold. Multiple air outlets are formed on the side of the bottom mold corresponding to the electrode tab, and these outlets are equidistantly arranged along the width of the electrode tab. An air blowing device is connected to the air passage, providing compressed air to the air passage. The compressed air is blown obliquely upwards from the air outlets towards the bottom of the electrode tab. The conveying unit also includes a locking mechanism for locking the bottom mold and the top cover; The locking mechanism includes two sets of limiting members that can be horizontally movably disposed on the transverse platform. The two sets of limiting members are respectively located on both sides of the carrier and are driven to move by two sets of first cylinders. A limiting block is protruding from the side of the limiting member, and the limiting block is moved to or away from the top of the carrier by the first cylinder. The locking mechanism also includes a second cylinder for driving the bottom mold to rise and fall. The bottom mold is driven to rise by the second cylinder, and the bottom mold presses the top cover against the bottom of the limiting block to lock the bottom mold and the top cover. The top cover is provided with a positioning post at the bottom, and the bottom mold is provided with a positioning hole at the top for the positioning post to be inserted. The bottom mold has first clamping pieces on both sides, and the top cover has second clamping pieces on both sides. When the top cover is placed on the bottom mold, a tiny gap is formed between the first clamping pieces and the second clamping pieces, which is just enough for the electrode tab to pass through. The first clamping pieces and the second clamping pieces are clamped on the electrode tab near the root of the battery cell. The height position of the first clamping piece on the bottom mold is adjustable, or / and the height position of the second clamping piece on the bottom mold is adjustable.

2. The ultrasonic welding equipment for battery production according to claim 1, characterized in that: The conveyor platform is provided with three sensors arranged along the second direction, and the transverse platform is provided with sensing plates for detection by the three sensors. When the sensing plates correspond to the three sensors respectively, the carrier on the transverse platform is located at the left station, the middle station, and the right station respectively.

3. The ultrasonic welding equipment for battery production according to claim 1, characterized in that: The ultrasonic pre-welding unit, ultrasonic final welding unit, and cutting unit are all mounted on the machine base via a transfer adjustment mechanism. The transfer adjustment mechanism includes a base, on which two parallel first guide rails are arranged along a second direction. A coarse adjustment platform is provided on the base, and a guide block is provided at the bottom of the coarse adjustment platform. The guide block slides with the first guide rails. A movable fine adjustment platform and a fine adjustment mechanism for moving the fine adjustment platform are provided on the coarse adjustment platform. The ultrasonic pre-welding unit, the ultrasonic final welding unit, and the cutting unit are disposed on the fine adjustment platform. The fine-tuning mechanism includes a threaded adjusting rod, which is rotatably mounted on the bottom of the coarse-tuning platform via two mounting blocks. A connecting block is threaded onto the threaded adjusting rod, and the connecting block passes through the coarse-tuning platform and is connected to the bottom of the fine-tuning platform. One end of the threaded adjusting rod is equipped with a hand crank. The top surface of the coarse adjustment platform and the bottom surface of the fine adjustment platform do not contact each other. Supports are provided on both sides of the base. Rotatable rollers are provided on the fine adjustment platform, and the rollers abut against the top of the support.

4. The ultrasonic welding equipment for battery production according to claim 3, characterized in that: All the outer side of the coarse adjustment support has first locking plates with strip holes. The outer side of the base has a plurality of first locking holes arranged in a row. The coarse adjustment support is fixed by passing through the strip holes on the first locking plates and threading them into the first locking holes. The fine-tuning support is provided with a second locking plate on its outer side, and the second locking plate is provided with a strip hole. The outer side of the base is provided with a plurality of second locking holes arranged in a row. The fine-tuning support is fixed by passing through the strip hole on the second locking plate and being threaded into the second locking hole. The roller is provided on the second locking plate.

5. The ultrasonic welding equipment for battery production according to claim 3 or 4, characterized in that: It also includes maintenance vehicles; At least two docking holes are provided at the rear of the base of the transfer adjustment mechanism; The maintenance vehicle is equipped with a second guide rail and a docking post for inserting into the docking hole. When the docking post is inserted into the docking hole, the end of the second guide rail docks with the end of the first guide rail. The base has fasteners on both sides, and the maintenance vehicle has buckles for fastening the fasteners to lock the maintenance vehicle to the base.

6. The ultrasonic welding equipment for battery production according to claim 1, characterized in that: The cutting unit includes a cutting frame, on which an upper cutting blade and a lower cutting blade are arranged vertically. The upper cutting blade is mounted on a lifting seat, which is driven to rise and fall by a first lifting component. The upper and lower cutting blades are interleaved to cut the tabs. The lower cutter is mounted on a cutting support platform, which is set on the cutting machine frame. The cutting support platform has a support surface for supporting the tabs. The support surface is provided with a plurality of adsorption holes, which are connected to an air extraction device to adsorb the tabs placed on the support surface. The cutting unit also includes an auxiliary leveling mechanism, which includes a connecting base block fixedly mounted on the lifting seat. A sliding rod is slidably sleeved on the connecting base block, a leveling pressure plate is connected to the bottom of the sliding rod, a blocking block is provided at the top of the sliding rod, and a spring for driving the leveling pressure plate away from the connecting base block is sleeved on the sliding rod. One end of the spring abuts against the leveling pressure plate, and the other end abuts against the connecting base block. In its natural state, the height of the leveling pressure plate is lower than the height of the upper cutter. When the lifting seat descends, the leveling pressure plate first presses against the support surface of the cutting support table, and then the upper cutter and the lower cutter interlaced to cut the tabs. The cutting unit also includes a collection box to receive waste material cut from the tabs.

7. The ultrasonic welding equipment for battery production according to claim 1, characterized in that: The ultrasonic final welding unit includes a bending welding mechanism and a longitudinal vibration welding mechanism; The bending welding mechanism includes a first welding head, a first amplitude transformer assembly, and a first transducer; the first transducer is coaxially connected to the first amplitude transformer assembly, the first amplitude transformer assembly is connected to the side of the first welding head, and the axis of the first amplitude transformer assembly is perpendicular to the axis of the first welding head; one end of the first welding head has a first welding surface, and the first welding surface is perpendicular to the axis of the first welding head; the bending welding mechanism is driven to rise and fall by a second lifting assembly, and the second lifting assembly provides a coaxial driving force to the first welding head; The longitudinal vibration welding mechanism includes a second welding head, a second amplitude transformer assembly, and a second transducer; the second transducer is coaxially connected to the second amplitude transformer assembly, and the second amplitude transformer assembly is coaxially connected to the second welding head; the side of the second welding head has a second welding surface, which is parallel to the axis of the second welding head; the second welding surface is arranged facing the first welding surface. The ultrasonic final welding unit also includes a first dust extraction mechanism; The ultrasonic pre-welding unit includes a multi-point pre-welding mechanism and a welding table. The multi-point pre-welding mechanism includes a third welding head, a third amplitude transformer assembly, and a third transducer. The third welding head is provided with multiple welding protrusions, which press the electrode tabs onto the welding table to achieve pre-welding. The multi-point pre-welding mechanism is driven to rise and fall by a third lifting assembly. The ultrasonic pre-welding unit also includes a second dust extraction mechanism; The detection unit includes a liftable detection frame, on which two metal detection heads are spaced apart along a second direction. The metal detection heads are electrically connected to a short-circuit detector. The distance between the two metal detection heads is adjustable, and the two metal detection heads are distributed corresponding to the tabs on both sides of the battery cell. The detection unit also includes two support frames located on both sides of the conveying unit along the first direction. The support frames are provided with pads for supporting the tabs, and the pads are located below the metal detection head. The distance between the two pads is adjustable.

Images