A long battery pack tab ultrasonic welding device

Abstract

The utility model discloses a long battery package pole ear ultrasonic welding equipment, including welding frock and the ultrasonic welding machine of distribution in the both sides of welding frock, the working end of ultrasonic welding machine is provided with ultrasonic welding head, and two groups of ultrasonic welding head are axially symmetric distribution in the both sides of welding frock top. The utility model discloses through placing long battery package on bracket, through the overall height of adjusting support plate and its upper part adjusting mechanism, removes long battery package and makes the butt joint of pole ear metal sheet and pole ear flattening assembly and flattens, after locking long battery package, carries out welding to the welding spot, through the limiting structure of width direction, when moving bracket, can switch welding spot position stably quickly, realizes accurate welding positioning, has guaranteed the welding consistency, has guaranteed the welding quality, has solved the problem of single welding point multiple welding, multiple welding inconvenient problem of multiple welding spot, can be applicable to 1.2~2 meters long battery package welding, has solved the problem of manual operation difficulty, low fatigue efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, and in particular to an ultrasonic welding device for long battery pack tabs. Background Technology

[0002] During ultrasonic welding, the mains power is converted into a high-frequency electrical signal by an ultrasonic generator. The transducer converts the electrical signal into high-frequency mechanical vibration through the inverse piezoelectric effect. After being amplified by the amplitude transformer, the vibration is transmitted to the welding head. The welding head acts on the metal workpiece. The micro-impact and friction generated by the high-frequency vibration remove impurities such as oxide film and oil from the metal surface. At the same time, the welding pressure causes local plastic deformation of the metal, which reduces the interatomic spacing and increases the activity of the metal atoms. The atoms overcome the surface energy and approach each other to form metal bonds, ultimately achieving metallurgical bonding between atoms and completing the welding.

[0003] The ultrasonic welding process for long battery pack tabs presents the following challenges: Limited operating range: The length of the battery pack far exceeds the comfortable operating range of a person (the effective operating range of an adult's outstretched arm is usually within 1.2 meters). It is difficult for a person to stably control the alignment of the tabs and apply uniform pressure during the welding process, especially in the areas at both ends of the battery pack, where awkward operating angles can easily lead to positioning deviations.

[0004] Welding consistency is difficult to guarantee: When manually adjusting the position of the welding head, it is difficult to ensure that the pressure, time, amplitude and other parameters of each welding are completely consistent. In addition, the force fluctuation caused by arm fatigue during long-distance operation will result in large differences in the strength and internal resistance of the welding points at different positions, which will affect the overall battery performance.

[0005] High labor intensity and low efficiency: Long battery packs have a large number of tabs and long welding paths, requiring manual labor to repeatedly move their bodies or tools for alignment, significantly increasing the welding time per pack (possibly 3-5 times that of short battery packs). Prolonged operation can easily lead to muscle strain, and operational errors are more likely to occur when fatigued.

[0006] Increased safety risks: The welding head of ultrasonic welding equipment reaches a high temperature under high-frequency vibration. When operating long battery packs, operators need to frequently approach the equipment. If they come into contact with the welding head due to fatigue or excessive operating amplitude, burns can easily occur. At the same time, improper force applied by operators during the handling and positioning of long battery packs may also lead to battery pack collisions or personnel injuries.

[0007] Therefore, it is necessary to develop an ultrasonic welding device for long battery pack tabs to solve the above problems. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide an ultrasonic welding equipment for long battery pack tabs, which addresses the shortcomings of the existing technology. This equipment solves the problem of inconvenience in welding multiple single welding points or multiple welding points, and is suitable for welding long battery packs of 1.2 to 2 meters. It also solves the problems of difficult manual operation and low fatigue efficiency. The welding fixture has an optimized design for welding positioning, which ensures welding consistency and guarantees welding quality.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An ultrasonic welding device for long battery pack tabs includes a welding fixture and ultrasonic welding machines distributed on both sides of the welding fixture. The working end of the ultrasonic welding machine is provided with an ultrasonic welding head, and two sets of ultrasonic welding heads are axially symmetrically distributed on both sides of the top of the welding fixture. The welding fixture includes a chassis frame and a support plate located on top of the chassis frame. A lifting and adjusting mechanism is provided between the chassis frame and the support plate to adjust the height of the support plate in the vertical direction. A bracket is movably provided on the top of the support plate. The bracket is used to place the long battery pack and the multi-layer electrode metal sheets at both ends of the long battery pack. A quick clamp is installed at the front end of the bracket. The telescopic end of the quick clamp is connected to a front positioning clamp. A rear positioning block is detachably installed at the rear end of the bracket by screws. The front positioning clamp and the rear positioning block are distributed parallel to each other to fix the long battery pack. Electrode flattening components are provided at both ends of the support plate below the ultrasonic welding head to fix and flatten the electrode metal sheets. The bottom of the support plate is provided with a positioning and blocking mechanism, which is located on both sides inside the chassis frame. The top of the positioning and blocking mechanism is movable and cooperates with the support plate to limit the movement of the bracket.

[0010] Preferably, the lifting adjustment mechanism includes a dual-axis servo motor and two sets of worm gear vertical screw jacks, wherein the two output shafts of the dual-axis servo motor are respectively connected to the input shafts of the two sets of worm gear vertical screw jacks through couplings for transmission, and the output moving ends of the two sets of worm gear vertical screw jacks are connected to the support plate for transmission. The bottom of the support plate is fixedly connected to multiple guide rods, and the inner wall of the chassis frame is fixedly connected to guide sleeves that correspond one-to-one with the multiple guide rods, and the guide rods and guide sleeves are slidably engaged.

[0011] Preferably, the electrode flattening assembly includes two sets of connecting blocks, which are symmetrically distributed at the front and rear ends of the support plate. A lower pressure plate is installed between the two sets of connecting blocks. Positioning posts are provided at both ends of the lower pressure plate, and an upper pressure plate is movably fitted above the lower pressure plate through the positioning posts. A protrusion is fixedly connected to the top of the upper pressure plate. Magnet blocks are embedded on the opposite side of the upper and lower pressure plates, so that the upper and lower pressure plates are magnetically attached. A strip groove penetrating the upper and lower pressure plates is opened at the position directly below the ultrasonic welding head.

[0012] Preferably, the positioning and blocking mechanism includes two sets of first cylinders and two sets of second cylinders. The two sets of first cylinders are symmetrically distributed about the center line of the support plate, and the two sets of second cylinders are also symmetrically distributed about the center line of the support plate. The output ends of the first cylinders and the second cylinders are all connected to limit rollers. The support plate has multiple openings.

[0013] Preferably, each group has multiple first cylinders and second cylinders, and the multiple first cylinders and second cylinders in the same group are arranged in a linear array. The first cylinders and second cylinders in adjacent groups are staggered in the width direction of the support plate. The opening is set as a long strip, and the width of the opening is greater than the width of the limiting roller. Multiple openings are distributed in a one-to-one correspondence with multiple limiting rollers. The cylinder shells of the first cylinder and the second cylinder are detachably connected to the support plate.

[0014] Preferably, both ends of the front positioning clamp are fixedly connected to limiting slide rods, and the outer side of the limiting slide rods is movably sleeved with a limiting slide sleeve, which is fixedly connected to the upper surface of the bracket, so that the front positioning clamp and the bracket slide together.

[0015] Preferably, the bottom of the bracket is embedded with a number of evenly distributed ball bearings, so that the support plate and the bracket slide together, and the front end of both the support plate and the bracket is fixedly connected with a drag handle.

[0016] Preferably, limit baffles are provided on both sides of the support plate along its length, and the limit baffles on both sides are distributed in parallel.

[0017] The ultrasonic welding equipment also includes a lower table and an upper shell. The upper shell is fixed to the top of the lower table by an aluminum alloy frame. The welding fixture is located in the inner cavity of the upper shell. An operation port is reserved on the front of the upper shell, and safety light curtains are provided on the left and right sides of the operation port. A first alarm and a second alarm are respectively provided on the top two sides of the upper shell. The first alarm and the second alarm work together with the safety light curtains to provide an alarm prompt when an abnormal operation occurs.

[0018] The ultrasonic welding equipment also includes a microcontroller. The microcontroller's input and output terminals are equipped with an A / D converter and a D / A converter, respectively. Positioning end plates are provided on both sides of the support plate. A first proximity switch and a second proximity switch are respectively installed on the two positioning end plates to sense the movement position of both ends of the long battery pack and feed the sensing signal back to the microcontroller. When the long battery pack moves to the designated position, the corresponding alarm indicator light will illuminate. The safety light curtain, the first proximity switch, and the second proximity switch are all electrically connected to the A / D converter. The first alarm and the second alarm are both electrically connected to the D / A converter.

[0019] This utility model has the following beneficial effects: 1. By placing the long battery pack on the bracket and adjusting the overall height of the support plate and its components through the lifting and adjusting mechanism, the long battery pack is moved to align and flatten the tab metal pieces with the tab flattening assembly. After locking the long battery pack, the welding points are welded. Through the width-direction limiting structure, the welding point position can be quickly and stably switched when the bracket is moved, achieving precise welding positioning, ensuring welding consistency, and guaranteeing welding quality. This further solves the problem of inconvenience in welding multiple single welding points or multiple welding points, and is applicable to welding long battery packs of 1.2 to 2 meters. It also solves the problems of difficult manual operation and low fatigue efficiency.

[0020] 2. This equipment has two symmetrically distributed ultrasonic welding machines. By moving the long battery pack left and right, the metal tabs on both sides can be welded quickly. It has high production efficiency, can weld multiple welding points with one loading, and has a high welding efficiency, which is much higher than that of pure manual welding. Moreover, the welding quality is high. The tooling welding can better ensure that the welding quality of each tab is consistent, making the welding performance of the battery pack more stable and ensuring the consistency of the battery pack. The equipment can be operated by a single person, which greatly reduces labor intensity and lowers production costs. Attached Figure Description

[0021] Figure 1 A three-dimensional view of the overall structure of the welding equipment provided by this utility model.

[0022] Figure 2 This is a front view of the overall structure of the welding equipment provided by this utility model.

[0023] Figure 3 A perspective view of the overall structure of the welding equipment provided by this utility model (excluding the upper shell).

[0024] Figure 4 This is a three-dimensional view of the welding fixture structure in this utility model.

[0025] Figure 5 This is a top view of the welding fixture structure in this utility model.

[0026] Figure 6This is a front view of the welding fixture structure in this utility model.

[0027] Figure 7 This is a rear view of the welding fixture structure in this utility model.

[0028] Figure 8 This is a left view of the welding fixture structure in this utility model.

[0029] Figure 9 This is a system control flowchart of the intelligent positioning system in this utility model.

[0030] Among them are: Lower table body -1; Upper shell -2; Welding fixture -3; Ultrasonic welding machine -4; Ultrasonic welding head -5; Chassis frame -6; Support plate -7; Lifting and adjusting mechanism -8; Limiting roller -9; Bracket -10; First cylinder -11; Second cylinder -12; Front positioning clamp -13; Rear positioning block -14; Ball bearing -15; Long battery pack -16; Electrode metal sheet -17; Quick clamp -18; Opening -19; Electrode flattening assembly -20; Drag handle -21; Limiting baffle -22; Microcontroller -23; Operating port -24; Safety light curtain -25; Positioning end plate -26; First proximity switch -27; Second proximity switch -28; Limiting sleeve -29; Limiting rod -30; First alarm -31; Second alarm -32; Dual-axis servo motor - 801; Worm gear vertical screw jack - 802; Coupling - 803; Guide rod - 804; Guide sleeve - 805; Connecting block-201; lower pressure plate-202; positioning post-203; upper pressure plate-204; protrusion-205; magnet block-206; strip groove-207. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0032] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0033] like Figure 1-8As shown, an ultrasonic welding device for long battery pack tabs includes a welding fixture 3 and ultrasonic welding machines 4 distributed on both sides of the welding fixture 3. The working end of the ultrasonic welding machine 4 is provided with an ultrasonic welding head 5, and the two sets of ultrasonic welding heads 5 are axially symmetrically distributed on both sides of the top of the welding fixture 3. The welding fixture 3 includes a chassis frame 6 and a support plate 7 located on top of the chassis frame 6. A lifting and adjusting mechanism 8 is provided between the chassis frame 6 and the support plate 7 to adjust the height of the support plate 7 in the vertical direction. A bracket 10 is movably mounted on the top of the support plate 7. The bracket 10 is used to place the long battery pack 16 and the multi-layer electrode tab metal sheets 17 at both ends of the long battery pack 16. A quick clamp 18 is installed at the front end of the bracket 10. The telescopic end of the quick clamp 18 is drivenly connected to a front positioning clamp 13. The rear end of the bracket 10 is detachably mounted by screws. Equipped with a rear positioning block 14, the front positioning clamp 13 and the rear positioning block 14 are distributed in parallel to each other to fix the long battery pack 16. This structure can quickly fix the long battery pack 16 and can meet the needs of different models of long battery packs 16. At both ends of the support plate 7, corresponding to the position below the ultrasonic welding head 5, there are tab flattening components 20 to fix and flatten the tab metal sheets 17. At the same time, only one end of the multi-layer tab metal sheets 17 is clamped and fixed. Under the pressure, the tab metal sheets 17 are flattened and attached to each other to facilitate welding operations.

[0034] In a preferred embodiment of the tab flattening assembly 20 provided in this application, it includes two sets of connecting blocks 201 symmetrically distributed at the front and rear ends of the support plate 7. A lower pressure plate 202 is mounted between the two sets of connecting blocks 201. Positioning posts 203 are provided at both ends of the lower pressure plate 202. An upper pressure plate 204 is movably fitted above the lower pressure plate 202 via the positioning posts 203. A protrusion 205 is fixedly connected to the top of the upper pressure plate 204 to facilitate lifting the upper pressure plate 204. Magnet blocks 206 are embedded on opposite sides of the upper pressure plate 204 and the lower pressure plate 202, so that the upper pressure plate 204 and the lower pressure plate 202 are magnetically attracted and attached. A strip groove 207 is provided directly below the ultrasonic welding head 5, penetrating the upper pressure plate 204 and the lower pressure plate 202. The ultrasonic welding head 5 can be raised and lowered and passes through the strip groove 207 to achieve ultrasonic welding at the contact point. The welding process employs pressure control technology, achieving welding accuracy of ±1N or even higher. This effectively avoids issues such as incomplete or over-welded connections caused by uneven pressure, and is suitable for welding battery pack tabs of varying lengths and widths, ranging from 1.2 to 2 meters.

[0035] A positioning and blocking mechanism is provided at the bottom of the support plate 7, and the positioning and blocking mechanism is located on both sides inside the chassis frame 6. The top of the positioning and blocking mechanism is movably engaged with the support plate 7 to limit the movement position of the bracket 10. It includes two sets of first cylinders 11 and two sets of second cylinders 12. The two sets of first cylinders 11 are symmetrically distributed about the center line axis of the support plate 7, and the two sets of second cylinders 12 are also symmetrically distributed about the center line axis of the support plate 7. Specifically, one set of first cylinders 11 and one set of second cylinders 12 are on one side of the center line, and the other set of first cylinders 11 and the other set of second cylinders 12 are on the other side of the center line. The output ends of the first cylinders 11 and the second cylinders 12 are all driven to limit the stop rollers 9. The support plate 7 has multiple openings 19. The number of first cylinders 11 and second cylinders 12 in each group is set to multiple. The multiple first cylinders 11 and second cylinders 12 in the same group are arranged in a linear array. The first cylinders 11 and second cylinders 12 in adjacent groups are staggered in the width direction of the support plate 7. The opening 19 is set to be elongated, and the width of the opening 19 is greater than the width of the limiting roller 9. Multiple openings 19 are distributed in a one-to-one correspondence with multiple limiting rollers 9. The cylinder shells of the first cylinder 11 and the second cylinder 12 are detachably connected to the support plate 7. The first cylinder 11 and the second cylinder 12 can be pre-positioned on the trajectory line at the bottom of the corresponding opening 19 as needed. The positions of the cylinders are adjustable and fixed with fasteners such as screws. This limits the adjustment range of the positioning bracket 10 in the width direction of the support plate 7. After the first cylinder 11 and the second cylinder 12 on both sides are adjusted according to the limiting width, the limiting roller 9 at the limited position needs to extend from the output end of the corresponding first cylinder 11 and the second cylinder 12, raising the limiting roller 9 and making it protrude from the opening 19, so that its upper edge is higher than the lower edge of the bracket 10. The output ends of the remaining first cylinder 11 and the second cylinder 12 remain retracted, and the corresponding limiting roller 9 will not interfere with the bracket 10. Thus, the bracket 10 will be blocked when it moves to the limited positions on both sides. This achieves rapid positioning and alignment, enabling multi-point welding of the left and right tabs with a single material feeding. The connecting ends of the first cylinder 11 and the second cylinder 12 are equipped with matching pneumatic mechanisms.

[0036] As a preferred embodiment of the lifting and adjusting mechanism 8 provided in this application, it includes a dual-axis servo motor 801 and two sets of worm gear vertical screw jacks 802. The two output shafts of the dual-axis servo motor 801 are respectively connected to the input shafts of the two sets of worm gear vertical screw jacks 802 through couplings 803 for transmission. The output moving ends of the two sets of worm gear vertical screw jacks 802 are connected to the support plate 7 for transmission. Of course, other lifting devices, such as electric actuator structures for direct transmission, can also be used.

[0037] Multiple guide rods 804 are fixedly connected to the bottom of the support plate 7, and guide sleeves 805, which correspond one-to-one with the multiple guide rods 804, are fixedly connected to the inner wall of the chassis frame 6. The guide rods 804 and guide sleeves 805 slide in cooperation.

[0038] Furthermore, in the above technical solution, both ends of the front positioning clamp 13 are fixedly connected to limiting slide rods 30, and the outer side of the limiting slide rods 30 is movably sleeved with a limiting slide sleeve 29. The limiting slide sleeve 29 is fixedly connected to the upper surface of the bracket 10, so that the front positioning clamp 13 and the bracket 10 slide together.

[0039] Furthermore, in the above technical solution, a number of evenly distributed ball bearings 15 are embedded at the bottom of the bracket 10, so that the support plate 7 and the bracket 10 slide together, making it easy for the bracket 10 to move flexibly on the support plate 7. Both the support plate 7 and the front end of the bracket 10 are fixedly connected to a drag handle 21, which facilitates operation and movement of the long battery pack 16.

[0040] Furthermore, in the above technical solution, limit baffles 22 are provided on both sides of the support plate 7 along its length, and the limit baffles 22 on both sides are distributed in parallel. This is used to protect the edges of the support plate 7 and improve the safety of the bracket 10.

[0041] The ultrasonic welding equipment also includes a lower table 1 and an upper housing 2. The upper housing 2 is fixed to the top of the lower table 1 by an aluminum alloy frame. The welding fixture 3 is located inside the upper housing 2. An operating port 24 is provided on the front of the upper housing 2. Safety light curtains 25 are provided on the left and right sides of the operating port 24. A first alarm 31 and a second alarm 32 are respectively provided on the top two sides of the upper housing 2. The first alarm 31 and the second alarm 32 cooperate with the safety light curtains 25. To further improve the safety of operation, a safety door can also be provided, which can be closed using the operating port 24 during welding.

[0042] like Figure 9As shown, the ultrasonic welding equipment is also equipped with an intelligent positioning system, which includes a microcontroller 33. The microcontroller 33 has an A / D converter and a D / A converter installed at its input and output ends, respectively. Positioning end plates 26 are installed on both sides of the support plate 7. A first proximity switch 27 and a second proximity switch 28 are installed on the two positioning end plates 26, respectively, to sense the movement position of both ends of the long battery pack 16 and feed the sensing signal back to the microcontroller 33. When the long battery pack 16 moves to the designated position, the corresponding alarm indicator light illuminates. The safety light curtain 25, the first proximity switch 27, and the second proximity switch 28 are all electrically connected to the A / D converter. The first alarm 31 and the second alarm 32 are both electrically connected to the D / A converter. Specifically, during the use of this device, when the end of the long battery pack 16 reaches the bottom of the designated ultrasonic welding head 5 during its movement, the indicator light on the corresponding alarm will illuminate to remind the operator, at which point the movement of the long battery pack 16 will stop. An alarm will sound if any abnormality occurs, such as the safety door not being closed during welding operations or a hand being inserted into the operating port 24 and detected by the safety light curtain 25, to ensure the safety of personnel during the welding process.

[0043] The circuits and controls involved in this application are all prior art and will not be described in detail here.

[0044] When using this welding equipment, the long battery pack 16 is placed on the bracket 10, and the long battery pack 16 is raised to a designated height by the lifting and adjusting mechanism 8. The long battery pack 16 is moved so that the multi-layer tab metal sheet 17 at one end is clamped by the tab flattening component. During welding, the ultrasonic welding machine 4 is started so that the ultrasonic welding head 5 contacts the connection part of the multi-layer tab metal sheet 17 and welds the contact point of the tab metal sheet 17. After completing one welding point, the bracket 10 is slid on the support plate 7 until it reaches the next limit and stops, so that the ultrasonic welding head 5 corresponds to another welding point and continues welding. After one tab metal sheet 17 is welded to the terminal of the long battery pack 16, the bracket 10 and the long battery pack 16 are moved together in the length direction of the support plate 7 by the ball bearing 15 until they move to the bottom position of the other ultrasonic welding head 5. The position of the bracket 10 is adjusted in the width direction of the support plate 7, and then the welding operation is carried out. After the welding of the tab metal sheets 17 at both ends is completed, they are removed and replaced with new parts to be welded.

[0045] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. An ultrasonic welding device for long battery pack tabs, comprising welding fixture (3) and two sets of ultrasonic welding machines (4), characterized in that: The ultrasonic welding machine (4) is equipped with an ultrasonic welding head (5) at its working end. Two sets of ultrasonic welding heads (5) are symmetrically distributed on both sides of the top of the welding fixture (3). The welding fixture (3) includes a chassis frame (6), a support plate (7), and a lifting adjustment mechanism (8) located between the chassis frame (6) and the support plate (7). The support plate (7) has a bracket (10) movably installed on its top for placing a long battery pack (16) and multi-layer tab metal sheets (17). Both ends of the support plate (7) are provided with tab flattening components (20) that cooperate to flatten the tab metal sheets (17) at the bottom positions of the ultrasonic welding head (5).

2. The ultrasonic welding equipment for long battery pack tabs according to claim 1, characterized in that: The lifting adjustment mechanism (8) includes a dual-axis servo motor (801) and two sets of worm gear vertical screw jacks (802). The two output shafts of the dual-axis servo motor (801) are connected to the input shafts of the two sets of worm gear vertical screw jacks (802) through couplings (803). The output moving ends of the two sets of worm gear vertical screw jacks (802) are connected to the support plate (7) through transmission. The bottom of the support plate (7) is fixedly connected with multiple guide rods (804), and the inner wall of the chassis frame (6) is fixedly connected with guide sleeves (805) that correspond one-to-one with the multiple guide rods (804), and the guide rods (804) and guide sleeves (805) slide together.

3. The ultrasonic welding equipment for long battery pack tabs according to claim 1, characterized in that: The electrode flattening assembly (20) includes two sets of connecting blocks (201). The two sets of connecting blocks (201) are symmetrically distributed at the front and rear ends of the support plate (7). A lower pressure plate (202) is installed between the two sets of connecting blocks (201). Positioning posts (203) are provided at both ends of the lower pressure plate (202). An upper pressure plate (204) is movably fitted above the lower pressure plate (202) through the positioning posts (203). A protrusion (205) is fixedly connected to the top of the upper pressure plate (204). A magnet block (206) is embedded on the opposite side of the upper pressure plate (204) and the lower pressure plate (202) so that the upper pressure plate (204) and the lower pressure plate (202) are magnetically attached. A strip groove (207) is provided at the position directly below the ultrasonic welding head (5) that penetrates the upper pressure plate (204) and the lower pressure plate (202).

4. The ultrasonic welding equipment for long battery pack tabs according to claim 1, characterized in that: The bottom of the support plate (7) is provided with a positioning blocking mechanism, and the positioning blocking mechanism is located on both sides inside the chassis frame (6). The top of the positioning blocking mechanism is movablely engaged with the support plate (7) to limit the movement position of the bracket (10). The positioning and blocking mechanism includes two sets of first cylinders (11) and two sets of second cylinders (12). The two sets of first cylinders (11) are symmetrically distributed about the center line of the support plate (7), and the two sets of second cylinders (12) are also symmetrically distributed about the center line of the support plate (7). The output ends of the first cylinders (11) and the second cylinders (12) are all connected to limit rollers (9). The support plate (7) has multiple openings (19).

5. The ultrasonic welding equipment for long battery pack tabs according to claim 4, characterized in that: The number of first cylinders (11) and second cylinders (12) in each group is set to multiple. The multiple first cylinders (11) and second cylinders (12) in the same group are arranged in a linear array. The first cylinders (11) and second cylinders (12) in adjacent groups are staggered in the width direction of the support plate (7). The opening (19) is set to be long strip. The width of the opening (19) is greater than the width of the limiting roller (9). The multiple openings (19) are distributed one-to-one with the multiple limiting rollers (9). The cylinder shells of the first cylinder (11) and the second cylinder (12) are detachably connected to the support plate (7).

6. The ultrasonic welding equipment for long battery pack tabs according to claim 1, characterized in that: A quick clamp (18) and a rear positioning block (14) are respectively installed at the front and rear ends of the bracket (10). The telescopic end of the quick clamp (18) is connected to a front positioning plate (13). The rear positioning block (14) is detachably connected to the bracket (10) by screws. Both ends of the front of the front positioning plate (13) are fixedly connected to a limiting slide rod (30). A limiting slide sleeve (29) is movably sleeved on the outside of the limiting slide rod (30). The limiting slide sleeve (29) is fixedly connected to the upper surface of the bracket (10), so that the front positioning plate (13) and the bracket (10) slide together.

7. The ultrasonic welding equipment for long battery pack tabs according to claim 1, characterized in that: The bottom of the bracket (10) is embedded with several evenly distributed balls (15) so that the support plate (7) and the bracket (10) slide together. The front ends of the support plate (7) and the bracket (10) are both fixedly connected with drag handles (21).

8. The ultrasonic welding equipment for long battery pack tabs according to claim 1, characterized in that: Limiting baffles (22) are provided on both sides of the length direction of the support plate (7), and the limiting baffles (22) on both sides are distributed in parallel.

9. The ultrasonic welding equipment for long battery pack tabs according to claim 8, characterized in that: It also includes a lower table body (1) and an upper shell (2), wherein the upper shell (2) is fixed to the top of the lower table body (1) by an aluminum alloy frame, the welding fixture (3) is located in the inner cavity of the upper shell (2), the upper shell (2) has an operation port (24) reserved on the front, and safety light curtains (25) are provided on the left and right sides of the operation port (24). A first alarm (31) and a second alarm (32) are respectively provided on the top two sides of the upper shell (2). The first alarm (31) and the second alarm (32) cooperate with the safety light curtain (25) to provide an alarm prompt when an abnormal operation occurs.

10. The ultrasonic welding equipment for long battery pack tabs according to claim 9, characterized in that: It also includes a microcontroller (33), with an A / D converter and a D / A converter respectively installed at the input and output ends of the microcontroller (33). Positioning end plates (26) are provided on both sides of the support plate (7). A first proximity switch (27) and a second proximity switch (28) are installed on the two positioning end plates (26) respectively, which are used to sense the moving position of the two ends of the long battery pack (16) and feed the sensing signal back to the microcontroller (33). After the long battery pack (16) moves to the designated position, the corresponding alarm indicator light is lit. The safety light curtain (25), the first proximity switch (27) and the second proximity switch (28) are all electrically connected to the A / D converter. The first alarm (31) and the second alarm (32) are all electrically connected to the D / A converter.

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