Lithium battery series-parallel connection welding processing production device

Abstract

The invention discloses a lithium battery series-parallel connection welding processing production device, and particularly relates to the technical field of lithium battery manufacturing, the lithium battery series-parallel connection welding processing production device comprises a mounting frame, a placing structure and a clamping structure, the clamping structure comprises a sliding plate, a connecting piece, a clamping plate, a second reset spring and a push plate, the connecting piece is arranged on the right side of the outer wall of the sliding plate, and the connecting piece is integrally of a Y-shaped structure; the two sets of clamping plates are connected with the Y-shaped branch ends of the connecting pieces correspondingly, the two sets of clamping plates are parallel, the top plane of the bottom clamping plate is parallel to a discharging port of the storage groove, one end of a second reset spring is fixed to the outer wall of the sliding plate, and the other end of the second reset spring is fixed to the outer wall of the sliding plate. By means of the lithium battery series-parallel connection welding device, the problems that in the existing lithium battery series-parallel connection welding machining process, the efficiency is low, the welding quality is not stable, and the adaptability to lithium batteries of different specifications is poor can be effectively solved.

Description

Technical Field

[0001] This invention relates to the field of lithium battery manufacturing technology, and in particular to a lithium battery series-parallel welding processing equipment. Background Technology

[0002] Against the backdrop of the booming development of the new energy industry, the global demand for clean energy is increasing daily, prompting continuous innovation and breakthroughs in new energy technologies. Lithium batteries, as core energy storage devices in the new energy field, stand out in numerous application scenarios due to their significant advantages such as high energy density, long cycle life, low self-discharge rate, and no memory effect. They are widely and deeply used in electric vehicles, energy storage systems, portable electronic devices, and many other fields. In practical applications, to meet the voltage and capacity requirements of different devices, multiple lithium batteries are often connected in series and parallel to form lithium battery packs. The quality of welding directly affects the performance, safety, and reliability of the lithium battery pack. Good welding ensures stable electrical connections between batteries, reduces internal resistance, and minimizes energy loss, thereby improving the overall performance of the lithium battery pack. Therefore, the series-parallel welding process of lithium batteries is of paramount importance for ensuring the quality and performance of lithium battery packs and promoting the healthy development of the new energy industry.

[0003] For example, a Chinese patent, CN120715519A, discloses a power lithium battery series-parallel welding processing device. In use, this device includes a frame and a battery pack. A first conveyor and a second conveyor are respectively arranged on both sides of the frame. A movable platform, slidably mounted on the frame, is located between the first and second conveyors, and the battery pack is mounted on the movable platform. A control component for welding the battery pack is located at the top of the frame, and a welding component is located at the bottom of the frame to intermittently move the movable platform towards the second conveyor. This power lithium battery series-parallel welding processing device, by activating a drive motor and through the linkage of a series of mechanical structures, causes a push rod to intermittently push the placement seat, movable platform, and battery pack towards the welding component. This automated intermittent conveying method greatly improves production efficiency and ensures that the welding process can proceed stably according to a predetermined rhythm. However, this patent only solves the problems of automated intermittent conveying of the battery pack and stable welding rhythm, and does not fully consider the adaptability to different specifications of lithium batteries. Because lithium batteries come in various specifications in actual production, this patent does not mention effective fixing and positioning methods for lithium batteries of different sizes and shapes, which may lead to positional deviations when welding batteries of different specifications, affecting welding quality. Furthermore, the patent does not address the placement of auxiliary materials (such as gaskets) during the welding process, making it unsuitable for production needs in scenarios requiring gasket assistance. In addition, this patent relies on only a single welding component and fails to flexibly employ multiple welding methods to improve welding quality for different parts of the lithium battery or different material characteristics. Therefore, a lithium battery series-parallel welding processing production device is proposed. Summary of the Invention

[0004] The main objective of this invention is to provide a lithium battery series-parallel welding processing device, which can effectively solve the problems of low efficiency, unstable welding quality, and poor adaptability to different specifications of lithium batteries in the existing lithium battery series-parallel welding processing.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A lithium battery series-parallel welding processing production device includes four sets of mounting frames, a placement structure, and a clamping structure. Each of the four sets of mounting frames has a top frame fixedly installed on its inner side, and each of the four sets of mounting frames has a bottom frame. The top frame has a rectangular structure and a hollow design inside. The placement structure includes four sets of limiting plates, a storage tank, a connecting plate, a pressure plate, and a first reset spring. The clamping structure is movably installed inside each of the four sets of limiting plates through grooves.

[0007] The clamping structure includes a sliding plate, a connector, two sets of clamping plates, a second return spring, and a push plate. The connector is located on the right side of the outer wall of the sliding plate. The connector has a Y-shaped structure, and the intersection of the connectors is movably connected by a pivot. The two sets of clamping plates are respectively connected to the Y-shaped branch ends of the connector. The two sets of clamping plates are parallel, and the top plane of the bottom clamping plate is parallel to the discharge port of the storage tank. One end of the second return spring is fixed to the outer wall of the sliding plate, and the other end of the second return spring is fixed inside the limiting plate. A push plate is located on the outer wall of the sliding plate away from the connector, and the bottom end of the push plate extends to the outside of the limiting plate.

[0008] Preferably, a storage tank is fixedly installed on the outer wall of each of the four sets of limiting plates. The bottom of the storage tank has an inclined structure, and the outlet of the storage tank is parallel to the inner side of the limiting plate. A connecting plate is provided on the outer side of each limiting plate, and the top of the connecting plate is fixedly connected to the top frame. A groove is provided on the inner side of each limiting plate, and the groove gradually slopes from left to right. The pressure plate is installed in the groove on the inner side of the limiting plate by a first reset spring.

[0009] Preferably, threaded rods are provided on both sides of the interior of the mounting bracket. The outer side of the threaded rods penetrates the interior of the mounting plate through a threaded structure, and the output end of the threaded rods extends to the outer side of the mounting bracket. Drive motors are provided on both sides of the outer wall of the mounting bracket, and the output end of the drive motors is fixedly connected to the threaded rods.

[0010] Preferably, the interior of the pressure plate has a trapezoidal structure, one end of the first reset spring extends into the interior of the pressure plate, and the other end of the first reset spring extends into the interior of the limiting plate.

[0011] Preferably, a welding structure is installed on the inner side of the mounting bracket via a threaded rod and a groove. The welding structure includes a mounting plate, two sets of resistance welding heads, and a laser welding head. The two sets of resistance welding heads are installed on the bottom of the mounting plate via cylinders, and the extended end of the cylinders protrudes from the bottom of the mounting plate. Each resistance welding head has a laser welding head at its bottom, and the working end of the laser welding head is inclined at 45° relative to the resistance welding head.

[0012] Preferably, the inner side of the base frame is provided with a fixing frame, and the inner side of the fixing frame is equipped with a connecting shaft through a rotating shaft.

[0013] Preferably, a flip plate is fixedly installed at one end of the connecting shaft, and four sets of lifting rods are provided inside both ends of the flip plate. A placement plate is fixedly installed at the extension end of the lifting rod. Multiple sets of telescopic rods are provided inside the placement plate through grooves at equal intervals. Multiple sets of placement holes are provided at equal intervals at the top of the placement plate. Two sets of clamping rings are provided inside the placement holes at the top of the placement plate. The extension end of the telescopic rod is fixedly connected to the outside of the clamping ring.

[0014] Preferably, the outer side of the flip plate is provided with two sets of telescopic side plates, and multiple sets of springs are provided equidistantly inside the telescopic side plates, and one end of the telescopic side plate is provided with a groove that matches the bottom of the push plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This invention improves production continuity by conveniently storing and retrieving auxiliary materials through equidistant storage slots on the front of the limiting plate. The connecting shafts of the fixed frames on both sides of the base frame drive the flipping plate and lifting rod to precisely adjust the height and angle, ensuring welding accuracy and adaptability. The telescopic rod and clamping ring inside the placement plate adaptively hold the lithium battery, ensuring welding stability. The precise linkage between the telescopic side plate on the outer side of the flipping plate and the clamping structure push plate, along with the reset mechanism, improves the accuracy and reliability of the gasket conveying operation. The Y-shaped connector on the right side of the sliding plate enhances the flexibility of the clamping plate, adapting to different gaskets. Furthermore, the automatic placement and reset of gaskets through the lifting and pressing of the welding structure optimizes the production process, comprehensively improving the performance and efficiency of the device in lithium battery series and parallel welding.

[0017] 2. The connecting shafts on the front of the fixed brackets on both sides of the base frame are connected to the external drive device, causing the tilting plate to rotate clockwise. The lifting rods inside both ends of the tilting plate precisely adjust the height of the placement plate to match the height of the welding structure, ensuring that the lithium battery and the welding head maintain the optimal distance and positional relationship during welding, thus improving welding accuracy. At the same time, the tilting plate rotates around the connecting shaft to change the angle of the placement plate. The equidistant placement holes on the top of the placement plate provide an orderly placement position for the lithium batteries, meeting the angle requirements of the lithium batteries in different operation stages such as handling, placement, and welding. This enhances the adaptability of the device to different production processes and lithium battery specifications, improving production efficiency. This structure achieves multi-dimensional precise adjustment, greatly improving welding quality and production flexibility. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall structure of the placement structure of the present invention;

[0020] Figure 3 This is a partial structural diagram of the placement structure of the present invention;

[0021] Figure 4 This is an enlarged structural diagram of point A in the present invention;

[0022] Figure 5 This is a schematic diagram of the overall structure of the clamping structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the overall structure of the flip plate of the present invention;

[0024] Figure 7 This is a schematic diagram of the overall structure of the welding structure of the present invention;

[0025] Figure 8 This is a schematic diagram of the overall structure of the flipping plate in the present invention during the flipping process;

[0026] Figure 9 This is a schematic diagram of the overall working structure of the flip plate of the present invention;

[0027] Figure 10 This is a schematic diagram of the three-dimensional cross-sectional structure of the telescopic side plate of the present invention.

[0028] In the diagram: 1. Mounting frame; 101. Top frame; 102. Base frame; 2. Placement structure; 201. Limiting plate; 202. Storage tank; 203. Connecting plate; 204. Pressure plate; 205. First return spring; 3. Clamping structure; 301. Sliding plate; 302. Connector; 303. Clamping plate; 304. Second return spring; 305. Push plate; 4. Welding structure; 401. Mounting plate; 402. Resistance welding head; 403. Laser welding head; 5. Fixing frame; 501. Connecting shaft; 6. Flipping plate; 601. Lifting rod; 602. Placement plate; 603. Telescopic rod; 604. Clamping ring; 7. Telescopic side plate. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] like Figure 1-10 As shown, a lithium battery series-parallel welding processing production device includes four sets of mounting frames 1, a placement structure 2, and a clamping structure 3. A top frame 101 is fixedly installed on the inner side of the top of each of the four mounting frames 1, and a base frame 102 is provided at the bottom of each mounting frame 1. The top frame 101 has a rectangular structure and a hollow design inside. The rectangular structure of the top frame 101 can support the placement structure 3 and the welding structure 4, improving the stability of the placement structure 3 and the welding structure 4 during use. Simultaneously, its hollow design facilitates equipment installation, debugging, and maintenance. Furthermore, the hollow design allows the welding structure 4 to move horizontally within the top frame 101 via the power of a threaded rod, thereby enabling welding work in different orientations.

[0031] The placement structure 2 includes four sets of limiting plates 201, storage groove 202, connecting plate 203, pressure plate 204, and first reset spring 205. The clamping structure 3 is movably installed inside the four sets of limiting plates 201 through grooves.

[0032] The clamping structure 3 includes a sliding plate 301, a connector 302, two sets of clamping plates 303, a second return spring 304, and a push plate 305. The connector 302 is located on the right side of the outer wall of the sliding plate 301. The connector 302 has a Y-shaped structure, and its intersection is movably connected via a pivot. The two sets of clamping plates 303 are respectively connected to the Y-shaped branches of the connector 302. The Y-shaped structure of the connector 302 and the movable connection of the pivot at the intersection allow the two sets of clamping plates 303 to change angle as they are moved by the sliding plate 301. This angle change causes the two sets of clamping plates 303 to move inward, allowing them to clamp the gasket. 3. The bottom clamping plate 303 is parallel to the top plane of the bottom clamping plate 303 and the discharge port of the storage tank 202. When the auxiliary material is discharged from the discharge port of the storage tank 202, the top plane of the bottom clamping plate 303 is parallel to it, which ensures that the material falls accurately on the clamping plate 303. The precise docking avoids the material falling off deviation and ensures the accuracy of the position of the auxiliary material in the subsequent welding process. One end of the second reset spring 304 is fixed to the outer wall of the sliding plate 301, and the other end of the second reset spring 304 is fixed to the inside of the limiting plate 201. The outer wall of the sliding plate 301 is provided with a push plate 305 at the end away from the connector 302. The bottom end of the push plate 305 extends to the outside of the limiting plate 201.

[0033] Storage tanks 202 are fixedly installed on the outer walls of the four sets of limiting plates 201. The bottom of the storage tanks 202 is inclined, and the outlet of the storage tanks 202 is parallel to the inner side of the limiting plates 201. The parallel arrangement makes the material more evenly distributed during discharge and prevents local accumulation near the outlet. This reduces the probability of outlet blockage caused by material accumulation, ensures the stability of material supply, and ensures that welding processing can be carried out continuously and efficiently. Each limiting plate 201 has a connecting plate 203 on its outer side, and the top of the connecting plate 203 is fixedly connected to the top frame 101. Each limiting plate 201 has a groove on its inner side, and the groove gradually slopes from left to right. The pressure plate 204 is installed in the groove on the inner side of the limiting plate 201 through the first return spring 205. The spring gives the pressure plate 204 a certain elastic buffer and return effect, which facilitates subsequent processing needs and provides a stable and reliable foundation for subsequent welding processing, effectively ensuring welding quality.

[0034] Both sides of the mounting frame 1 are provided with threaded rods. The outer side of the threaded rods penetrates the interior of the mounting plate 401 through a threaded structure, and the output end of the threaded rods extends to the outer side of the mounting frame 1. Both sides of the outer wall of the mounting frame 1 are provided with drive motors, and the output end of the drive motors is fixedly connected to the threaded rods. The drive motors can drive the threaded rods to rotate, thereby realizing the precise position adjustment of the parts inside the mounting frame 1 that mate with the threaded rods. The relevant structural positions can be flexibly changed according to welding requirements, providing convenience for welding operations and improving the flexibility and accuracy of device operation.

[0035] The interior of the pressure plate 204 has a trapezoidal structure. One end of the first reset spring 205 extends into the interior of the pressure plate 204, and the other end of the first reset spring 205 extends into the interior of the limiting plate 201. The trapezoidal structure can play a guiding role, guiding the gasket to the appropriate position. At the same time, the first reset spring 205 can provide elastic buffering and reset effect for the pressure plate 204, which facilitates subsequent processing, provides a stable and reliable foundation for welding processing, and ensures welding quality.

[0036] A welding structure 4 is mounted on the inner side of the mounting bracket 1 via a threaded rod and a groove. The welding structure 4 includes a mounting plate 401, two sets of resistance welding heads 402, and a laser welding head 403. The two sets of resistance welding heads 402 are mounted on the bottom of the mounting plate 401 via cylinders, with the extended end of the cylinders protruding from the bottom of the mounting plate 401. Each resistance welding head 402 has a laser welding head 403 at its bottom, and the working end of the laser welding head 403 is tilted at 45° relative to the resistance welding head 402. The 45° tilt angle of the laser welding head 403 allows for the complementary advantages of composite welding to expand the welding applicability. The device expands its scope, improves quality, optimizes spatial layout and operational convenience, and enhances heat dissipation and reduces the heat-affected zone, ensuring the welding effect and performance of lithium batteries. The resistance welding head 402 can be raised and lowered by a cylinder, and the annular cover surrounding its bottom can focus the heat of resistance welding, improve welding efficiency, reduce welding time, and reduce thermal damage to surrounding components. The laser welding head 403 works in conjunction with the resistance welding head 402 to achieve more precise welding for different welding requirements and material characteristics of lithium batteries. The composite welding method enriches the welding functions of the device and improves welding quality.

[0037] The inner side of the base frame 102 is equipped with a fixed frame 5. The inner side of the fixed frame 5 is equipped with a connecting shaft 501 through a rotating shaft. The connecting shaft 501 can work with an external drive device to drive the flipping plate 6 to rotate clockwise, so that the lithium battery can be flipped and repositioned at different angles during the processing. This increases the possibility of adjusting the processing angle of the lithium battery and meets different processing requirements.

[0038] A flip plate 6 is fixedly installed at one end of the connecting shaft 501. Four sets of lifting rods 601 are provided inside both ends of the flip plate 6. A placement plate 602 is fixedly installed at the extended end of each lifting rod 601. Multiple sets of telescopic rods 603 are equidistantly arranged inside the placement plate 602 via grooves. Multiple sets of placement holes are equidistantly arranged on the top of the placement plate 602. Two sets of clamping rings 604 are provided inside the top placement holes of the placement plate 602. The extended ends of the telescopic rods 603 are fixedly connected to the outer sides of the clamping rings 604. The lifting rods 601 inside both ends of the flip plate 6 can precisely adjust the height of the placement plate 602 to match the height of the welding structure 4, ensuring the lithium battery is properly aligned during welding. The pool and welding head maintain the optimal distance and positional relationship to improve welding accuracy; the flip plate 6 rotates around the connecting shaft 501 to change the angle of the placement plate 602, and combined with the equidistant placement holes on the top of the placement plate 602, it meets the different angle requirements of lithium batteries in handling, placement, welding and other operations, improves the ease of operation and production efficiency of the device, and enhances the adaptability to different production processes and lithium battery specifications; the telescopic rod 603 inside the placement plate 602 adjusts the position of the clamping ring 604 according to the diameter of the lithium battery to achieve precise clamping of lithium batteries of different sizes, prevent the lithium batteries from shaking or shifting on the placement plate 602, and provide a reliable foundation for welding processing.

[0039] Two sets of telescopic side plates 7 are provided on the outer side of the flip plate 6, and multiple sets of springs are equidistantly arranged inside the telescopic side plates 7. One end of the telescopic side plate 7 is provided with a groove that matches the bottom of the push plate 305. When the flip plate 6 rotates clockwise through the connecting shaft 501 under the drive of the external drive device, the telescopic side plate 7 can accurately contact and lock with the push plate 305 of the clamping structure 3 during the rotation. This ingenious structural cooperation allows the rotational motion of the flip plate 6 and the telescopic side plate 7 to be effectively transmitted to the push plate 305, thereby driving the clamping structure 3 to move horizontally as a whole. During the horizontal movement of the clamping structure 3, the connector 302 and the clamping plate 303 can string the lithium battery together. During parallel welding, the gaskets are precisely fixed and moved horizontally until they are transported to the central area. After that, when the contact between the telescopic side plate 7 and the push plate 305 is released, the clamping structure 3 can automatically reset by relying on the second return spring 304. In this process, the telescopic side plate 7 not only achieves precise linkage with the clamping structure 3, ensuring that the gaskets can be transported according to the predetermined path and position, but its internal spring also plays a role in buffering and fine adjustment. During the contact and interlocking process, the spring can also alleviate the impact force between the components, ensuring the stability and reliability of the connection and avoiding component damage or positional deviation caused by rigid collision.

[0040] It should be noted that the specific installation method of the fixed connection, the circuit connection method, and the control method used in this invention are all conventional designs, and will not be described in detail here.

[0041] The working principle of this invention is as follows: The drive motor on the right side of the top frame 101 is activated, and the motor output drives the inner threaded rod to rotate. This movement allows the placement structure 2, which cooperates with the threaded rod, to be precisely positioned at the bottom of the top frame 101. The position of the placement structure 2 can be flexibly changed according to welding requirements, preparing for subsequent welding operations. When placing lithium batteries and related auxiliary materials, the equidistant storage slots 202 on the front of the limiting plate 201 are used to store auxiliary materials such as gaskets, which can be easily accessed by operators, improving the continuity of the production process. When the external conveyor belt structure smoothly and precisely transports the lithium battery pack along the preset track to the bottom position of the base frame 102, the plane where the lithium battery pack is located is exactly parallel to the flipping plate 6, ensuring the subsequent lithium battery pack is properly positioned. The battery pack can smoothly and accurately dock with the flip plate 6. It is connected to an external drive device via the connecting shaft 501 on the front of the inner fixing brackets 5 on both sides of the base frame 102, causing the flip plate 6 to rotate clockwise. The lifting rods 601 inside both ends of the flip plate 6 can precisely adjust the height of the placement plate 602 to match the height of the welding structure 4, ensuring the lithium battery and welding head maintain the optimal distance and positional relationship during welding, thus improving welding accuracy. The flip plate 6 rotates around the connecting shaft 501 to change the angle of the placement plate 602, meeting the different angle requirements of lithium batteries during handling, placement, and welding operations. The equidistant placement holes on the top of the placement plate 602 provide an orderly placement position for the lithium batteries, enhancing the adaptability of the device to different production processes and lithium battery specifications, and improving production efficiency. The internal telescopic rod 603 automatically adjusts the position of the clamping ring 604 according to the diameter of the lithium battery, achieving precise clamping of lithium batteries of different sizes. When the lithium battery is placed in the placement hole, the clamping ring 604, driven by the telescopic rod 603, tightly fits the surface of the lithium battery, providing stable clamping force and preventing it from shaking or shifting on the placement plate 602, ensuring reliable welding processing. When the flipping plate 6 rotates clockwise via the connecting shaft 501 driven by the external drive device, its outer telescopic side plate 7 precisely contacts and engages with the push plate 305 of the clamping structure 3 during rotation. This structure allows the rotational motion of the flipping plate 6 and the telescopic side plate 7 to be transmitted to the push plate 305, causing the clamping structure 3 to move horizontally as a whole. During the horizontal movement of the clamping structure 3, the connecting piece 302 and the clamping ring 604 engage... Plate 303 precisely fixes and horizontally moves the gaskets used for series and parallel welding of lithium batteries until they are conveyed to the central area. Then, when the telescopic side plate 7 releases contact with the push plate 305, the clamping structure 3 automatically resets using the second return spring 304. During this process, the spring inside the telescopic side plate 7 acts as a buffer and fine-tuning mechanism, mitigating impact forces between components, ensuring stable and reliable connections, preventing component damage or positional deviations, and ensuring the gaskets are conveyed along a predetermined path and position. The Y-shaped connector 302 fixed to the right side of the sliding plate 301 allows for movable connection at its included angle, making the clamping plate 303 highly flexible. For lithium battery gaskets of different sizes and shapes, the clamping plate 303 can automatically change its relative position and angle through the movable adjustment of the included angle of the Y-shaped connector 302, ensuring a tight fit with the lithium battery gaskets.During welding, the welding structure 4, installed in the inner groove of the top frame 101, will lift and lower. During this lifting and lowering process, the welding structure 4 will press down on the lithium battery pad. When the pad is under pressure, it will press down on the pressure plate 204. The pressure plate 204 will then flip downwards under pressure, thereby detaching the lithium battery pad and placing it on top of the lithium battery. After the lithium battery pad is detached from the pressure plate 204, the pressure plate 204 will be reset by the first return spring 205, which facilitates the subsequent placement of the lithium battery pad. The cylinder penetrating inside the mounting plate 401 can drive the resistor. The welding head 402 moves up and down. The annular cover on the outer side of its bottom end focuses the heat from the resistance welding process, improving welding efficiency and reducing thermal damage to surrounding components. The laser welding head 403 is positioned at a 45° angle, and its laser beam acts on the welding area in a specific direction and angle. Working in conjunction with the resistance welding head 402, it achieves precise welding for different lithium battery welding requirements. In areas requiring high welding strength and sealing, the resistance welding head 402 is used for initial welding, followed by reinforcement and fine finishing with the laser welding head 403, enriching welding functions and improving welding quality.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery series-parallel welding processing production device, comprising four sets of mounting frames (1), a placement structure (2), and a clamping structure (3), characterized in that: The top of each of the four sets of mounting brackets (1) is fixedly installed with a top bracket (101) on the inner side. The bottom of each of the mounting brackets (1) is provided with a base bracket (102). The top bracket (101) has a rectangular structure and the interior of the top bracket (101) is hollow. The placement structure (2) includes four sets of limiting plates (201), a storage slot (202), a connecting plate (203), a pressure plate (204), and a first reset spring (205). The interior of each of the four sets of limiting plates (201) is movably installed with a clamping structure (3) through a groove. The clamping structure (3) includes a sliding plate (301), a connector (302), two sets of clamping plates (303), a second reset spring (304), and a push plate (305). The outer right side of the sliding plate (301) is provided with a connector (302). The connector (302) has a Y-shaped structure, and the intersection of the connectors (302) is movably connected by a rotating shaft. The two sets of clamping plates (303) are respectively connected to the Y-shaped branch ends of the connector (302). The clamping plates (303) are parallel, and the top plane of the bottom clamping plate (303) is parallel to the discharge port of the storage tank (202). One end of the second reset spring (304) is fixed to the outer wall of the sliding plate (301), and the other end of the second reset spring (304) is fixed inside the limiting plate (201). The outer wall of the sliding plate (301) away from the connector (302) is provided with a push plate (305), and the bottom end of the push plate (305) extends to the outside of the limiting plate (201).

2. The lithium battery series-parallel welding processing production device according to claim 1, characterized in that: The four sets of limiting plates (201) are all fixedly installed with storage tanks (202) on their outer walls. The bottom of the storage tanks (202) is inclined, and the outlet of the storage tanks (202) is parallel to the inner side of the limiting plates (201). The outer side of the limiting plates (201) is provided with connecting plates (203), and the top of the connecting plates (203) is fixedly connected to the top frame (101). The inner side of the limiting plates (201) is provided with grooves, and the grooves gradually slope from left to right. The pressure plate (204) is installed in the inner groove of the limiting plate (201) by the first reset spring (205).

3. The lithium battery series-parallel welding processing production device according to claim 1, characterized in that: The mounting bracket (1) has threaded rods on both sides inside. The outer side of the threaded rods penetrates the interior of the mounting plate (401) through a threaded structure, and the output end of the threaded rods extends to the outer side of the mounting bracket (1). The mounting bracket (1) has drive motors on both sides of its outer wall, and the output end of the drive motors is fixedly connected to the threaded rods.

4. The lithium battery series-parallel welding processing production device according to claim 3, characterized in that: The interior of the pressure plate (204) has a trapezoidal structure. One end of the first reset spring (205) extends into the interior of the pressure plate (204), and the other end of the first reset spring (205) extends into the interior of the limiting plate (201).

5. The lithium battery series-parallel welding processing production device according to claim 1, characterized in that: The mounting bracket (1) has a welding structure (4) installed on its inner side via a threaded rod and a groove. The welding structure (4) includes a mounting plate (401), two sets of resistance welding heads (402), and a laser welding head (403). The two sets of resistance welding heads (402) are installed on the bottom of the mounting plate (401) via cylinders, and the extension end of the cylinder protrudes from the bottom of the mounting plate (401). Each resistance welding head (402) has a laser welding head (403) at its bottom, and the working end of the laser welding head (403) is inclined at 45° relative to the resistance welding head (402).

6. The lithium battery series-parallel welding processing production device according to claim 1, characterized in that: The inner side of each base frame (102) is provided with a fixing frame (5), and the inner side of the fixing frame (5) is equipped with a connecting shaft (501) through a rotating shaft.

7. A lithium battery series-parallel welding processing production device according to claim 6, characterized in that: A flip plate (6) is fixedly installed at one end of the connecting shaft (501). Four sets of lifting rods (601) are provided inside both ends of the flip plate (6). A placement plate (602) is fixedly installed at the extension end of the lifting rod (601). Multiple sets of telescopic rods (603) are provided at equal intervals through grooves inside the placement plate (602). Multiple sets of placement holes are provided at equal intervals on the top of the placement plate (602). Two sets of clamping rings (604) are provided inside the placement holes on the top of the placement plate (602). The extension end of the telescopic rod (603) is fixedly connected to the outside of the clamping ring (604).

8. The lithium battery series-parallel welding processing production device according to claim 1, characterized in that: The flip plate (6) has two sets of telescopic side plates (7) on its outer side, and multiple sets of springs are provided at equal intervals inside the telescopic side plates (7), and one end of the telescopic side plate (7) has a groove that is adapted to the bottom of the push plate (305).

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