Welding system for new energy battery module and process method of system

Abstract

The invention relates to the technical field of new energy battery module welding, in particular to a welding system for a new energy battery module and a process method of the system.The welding system comprises a welding system body, the welding system body comprises a supporting frame, and the supporting frame is provided with a supporting plate in a matched mode; a multi-directional moving assembly is arranged on the supporting plate in a matched mode, the multi-directional moving assembly is connected with a welding assembly, the welding assembly comprises at least one rotary welding pressing head, the welding assembly is further provided with a welding detection assembly in a matched mode, and a welding platform assembly is arranged in the multi-directional moving assembly. The rotary welding pressing head is arranged in the welding system body, the welding needle is controlled by the rotary motor to rotate by a certain angle, the welding needle and a nickel sheet are smoothly separated after welding is completed, the problems that in a traditional welding mode, the welding needle adheres to the nickel sheet, and products are prone to being damaged are effectively solved, and the whole system is high in automation degree, easy and convenient to operate and high in efficiency. The method is suitable for welding production of the new energy battery module.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy battery module welding, and in particular to a welding system for a new energy battery module and a process method of the system. Background Art

[0002] The rapid development of the new energy vehicle industry has placed higher demands on battery module production efficiency and product quality. During the production of new energy battery modules, after the battery cells are assembled into the module, they must be joined to the nickel sheet using resistance welding to achieve series and parallel connections between the cells.

[0003] Currently, traditional welding systems for new energy battery modules have several shortcomings. For example, the positioning of the welding head is not precise enough to meet the welding requirements of battery modules of varying sizes and shapes. A lack of effective protective measures during welding can easily lead to oxidation of the welded area, compromising weld quality. Furthermore, a lack of effective quality inspection methods after welding prevents timely detection of welding defects.

[0004] Furthermore, during the existing resistance welding process, especially after welding, the welding needle often sticks to the nickel sheet. When the welding needle rises, this sticking phenomenon can damage the nickel sheet and even cause the entire battery module to shift, thus damaging the product and seriously affecting production efficiency and product quality. Summary of the Invention

[0005] To address some of the problems with the aforementioned prior art, the present invention provides a welding system for new energy battery modules. This system incorporates a rotating welding head within the welding system itself, utilizing a rotary motor to control the rotation of the welding needle through a certain angle. This allows for smooth separation of the welding needle from the nickel sheet after welding, effectively resolving the issue of the welding needle adhering to the nickel sheet and thus damaging the product in traditional welding methods. A nitrogen purge assembly also provides a protective atmosphere for the welding process, while a multi-directional mobile assembly enables precise position adjustment of the welding assembly, improving welding efficiency and product quality. The entire system is highly automated and easy to operate, making it suitable for the welding production of new energy battery modules.

[0006] To achieve the above-mentioned purpose, the present invention provides a welding system for new energy battery modules, including a welding system body, the welding system body including a support frame, the support frame is equipped with a support plate, the support plate is equipped with a multi-directional movable component, the multi-directional movable component is connected to a welding component, the welding component includes at least one rotating welding pressure head, the welding component is also equipped with a welding detection component, and a welding platform component is arranged in the multi-directional movable component.

[0007] As a further improvement of the present invention, in order to enable the welding needle to smoothly detach from the nickel sheet after welding is completed, and effectively solve the problem of welding needle adhesion in traditional welding methods, the rotary welding pressure head includes a rotating motor, and the rotating motor is equipped with a transmission shaft. The other end of the transmission shaft is provided with a fixed support structure. The rotary welding pressure head is connected to the multi-directional movable component through the fixed support structure. A bearing is provided between the fixed support structure and the transmission shaft, and the rotating motor controls the rotation angle of the rotary welding pressure head; a welding needle is fixedly installed under the fixed support structure, and the welding needle is equipped with a nitrogen purge component, and the nitrogen purge component blows nitrogen to the welding area through the welding gun.

[0008] As a further improvement of the present invention, in order to make the installation and fixation of the welding needle more stable, realize the precise limitation of the welding needle, and improve the accuracy and consistency of welding, the fixed support structure includes a fixed block, and several groups of fixed connecting shafts are inserted and slidably arranged inside the fixed block. A fixed connecting block is arranged below the fixed connecting shaft, and multiple groups of fixed clamping blocks are arranged below the fixed connecting block. Fixed limiting grooves are arranged between adjacent fixed clamping blocks, and the fixed clamping blocks limit the welding needle through the fixed limiting grooves; the nitrogen purge assembly includes a nitrogen supply pipeline and a flow regulating valve arranged on the nitrogen supply pipeline, and the nitrogen supply pipeline is connected to the welding needle.

[0009] As a further improvement of the present invention, in order to achieve flexible movement of the welding pallet and meet the needs of different welding positions, the welding platform assembly includes a supporting slide rail arranged on a supporting frame, a welding pallet is arranged on the supporting slide rail, one side of the supporting slide rail is fixedly set on the supporting frame, a platform moving slide rail is arranged below the supporting slide rail, and a platform connecting block is provided on the other side of the supporting guide rail. The platform connecting block is connected to the platform moving slide rail below the supporting slide rail, and a platform telescopic cylinder is provided on the other side of the platform connecting block on the supporting frame, and a travel switch is also provided on the supporting slide rail.

[0010] As a further improvement of the present invention, in order to achieve precise movement of the welding pallet in the horizontal and vertical directions and further improve the adjustment flexibility of the welding position, a pallet translation assembly is arranged below the supporting slide rail, and the pallet translation assembly includes a first translation assembly and a second translation assembly arranged perpendicular to the first translation assembly, and the first translation assembly is arranged higher than the second translation assembly; the first translation assembly includes a first translation slide rail, and a pallet connecting block is slidingly arranged above the first translation slide rail, and the pallet connecting block is detachably connected to the welding pallet; an intermediate sliding block is arranged between the first translation assembly and the second translation assembly, and the second translation assembly includes a second translation slide rail.

[0011] As a further improvement of the present invention, in order to realize the flexible movement of the welding assembly in three-dimensional space and meet the requirements of complex welding paths, the multi-directional movable assembly includes a first movable slide rail arranged on both sides of the support frame, the first movable slide rail is cooperated with a second movable slide rail, the second movable slide rail is arranged vertically as a whole, and a second sliding block is cooperated with both ends of the second movable slide rail. The second movable slide rail slides on the first movable slide rail to achieve position change through the second sliding block. The second movable slide rail is also cooperated with a third movable slide rail, and the third movable slide rail is connected to the welding assembly.

[0012] As a further improvement of the present invention, in order to make the adjustment of the welding assembly in the vertical direction more precise and convenient, and to ensure the stability and accuracy of the third movable slide rail during the sliding process, a third sliding block is provided on the second movable slide rail, and the third movable slide rail is arranged on the third sliding block, and the third sliding block is connected to a sliding fixed block, and the sliding fixed block has a C-shaped structure as a whole, and the third movable slide rail is arranged inside the sliding fixed block, and a limiting sliding block is provided on the outside of the sliding fixed block, and the limiting sliding block has a C-shaped structure as a whole and is arranged opposite to the sliding fixed block, and the limiting sliding block is cooperated with an upper and lower telescopic cylinder, and the output end of the upper and lower telescopic cylinder is provided with a fixed seat, and the welding assembly is provided on the fixed seat.

[0013] As a further improvement of the present invention, in order to provide precise guidance and limitation for the relative movement of the sliding fixed block and the limiting sliding block, and ensure the stability and accuracy of the welding assembly during movement, sliding limiting grooves are respectively provided on the upper and lower sides of the sliding fixed block, and limiting blocks are provided on the upper and lower sides of the limiting sliding block corresponding to the sliding limiting grooves, and a fourth sliding block is provided inside the limiting sliding block to cooperate with the third movable slide rail.

[0014] As a further improvement of the present invention, in order to achieve real-time monitoring and feedback of welding quality so that any problems in the welding process can be discovered in time, the welding detection assembly includes a detection support base, the detection support base is equipped with at least one articulated arm, an adjustment knob is provided between adjacent articulated arms, and the end of the articulated arm is equipped with a welding detection needle.

[0015] A beneficial effect of the present invention is:

[0016] Improve welding automation and integration level:

[0017] This invention integrates a multi-directional mobile assembly, welding assembly, welding detection assembly, and welding platform assembly to create a highly automated and integrated new energy battery module welding system. This not only simplifies the operation process and reduces manual intervention, but also significantly improves production efficiency and welding quality.

[0018] Optimize welding process and quality:

[0019] The introduction of a rotary welding head and nitrogen purge assembly effectively solves problems such as needle sticking and oxidation in traditional welding, significantly improving welding precision and consistency. Furthermore, the real-time monitoring and feedback mechanism of the welding inspection assembly ensures the stability and reliability of welding quality, reducing the number of defective products.

[0020] Enhance system flexibility and adaptability:

[0021] The design of multi-directional mobile components and welding platform components enables the welding system to flexibly adapt to battery modules of varying sizes, shapes, and welding requirements. By precisely adjusting the position and angle of welding components, the system can easily handle complex welding paths and process requirements, improving production flexibility and adaptability.

[0022] Improve operational convenience and safety:

[0023] The system's structural design takes operational convenience and safety into consideration. For example, the configuration of upper and lower telescopic cylinders and fixed bases simplifies the vertical adjustment of the welding assembly; the combination of sliding fixed blocks and limit sliding blocks ensures the stability of the welding assembly during movement; and the nitrogen purge assembly provides a protective atmosphere during the welding process, reducing operational risks.

[0024] The present invention also provides a process method for a welding system for a new energy battery module, the process method comprising the following steps:

[0025] Step 1: Turn on the welding system power supply, and the system will automatically perform a self-check on each component, including the operating status of the motor and slide rail of the multi-directional moving component, the motor and transmission components of the rotary welding pressure head, the airtightness of the nitrogen purge component, and the mobility of the joint arm of the welding detection component, to ensure that all components are fault-free;

[0026] Step 2: Open the nitrogen supply valve to allow nitrogen to enter the nitrogen supply pipeline, check the flow regulating valve, and adjust the nitrogen flow to the appropriate value according to the welding process requirements to ensure a stable nitrogen purge effect;

[0027] Step 3: Start the platform telescopic cylinder to drive one side of the support rail to move on the platform moving rail through the platform connecting block. According to the size and shape of the battery module, the width of the support rail is adjusted to match the size of the battery module;

[0028] Step 4: The tray translation assembly starts working. The tray connection block in the first translation assembly slides on the first translation rail, driving the welding tray to perform preliminary translation adjustment in the horizontal direction. At the same time, the second translation assembly cooperates with the first translation assembly to achieve position change through the middle sliding block, so that the battery module on the welding tray is accurately moved to the welding starting position below the welding assembly.

[0029] Step 5: The first movable slide in the multi-directional movable assembly starts working, and the second movable slide slides on the first movable slide through the second sliding blocks at both ends to achieve preliminary horizontal positioning. According to the welding process requirements, the second movable slide is moved to the horizontal coordinate corresponding to the battery module welding position;

[0030] Step 6: The third movable rail is adjusted vertically under the guidance of the second movable rail. The third sliding block slides on the second movable rail, driving the sliding fixed block and the limit sliding block to move synchronously, so that the welding assembly fixed on the fixed seat is accurately moved vertically to the welding height. The upper and lower telescopic cylinders can be fine-tuned as needed to ensure that the welding assembly maintains an appropriate distance from the welding part of the battery module.

[0031] Step 7: After the vertical positioning is completed, the limit sliding block, under the action of the upper and lower telescopic cylinders, cooperates with the sliding limit groove on the limit block and the sliding fixed block to fine-tune the third movable slide rail in the horizontal direction; the fourth sliding block slides inside the limit sliding block in cooperation with the third movable slide rail to achieve precise position adjustment of the welding assembly in the horizontal plane, ensuring that the rotary welding pressure head can accurately align with the welding point;

[0032] Step 8: The rotary motor starts, driving the fixed support structure to rotate through the transmission shaft, and adjusting the rotary welding pressure head to the preset welding angle; at the same time, the nitrogen purge assembly starts working, and the flow control valve on the nitrogen supply line blows nitrogen to the welding needle according to the set flow rate to provide a protective atmosphere for the welding process;

[0033] Step 9: After the rotary welding head is adjusted into place, the welding power is turned on and the welding needle begins to perform resistance welding on the electrodes and nickel sheet of the battery module. During the welding process, the current forms a short circuit high temperature on the surface of the product, which fuses the positive and negative electrodes of the battery cell with the nickel sheet.

[0034] Step 10: After welding is completed, according to the preset program, the rotary motor is started again, and the rotary welding head stays at the welding position for a while, then rotates a certain angle, and uses the force generated by the rotation to separate the welding needle and the nickel sheet; then the entire welding head is lifted;

[0035] Step 11: The articulated arm of the welding inspection component moves flexibly under the action of the adjustment knob, driving the welding inspection needle to move to the top of the welding part. The welding inspection needle inspects the welding part. If the welding quality inspection is qualified, the platform telescopic cylinder starts again to push the welding tray to the unloading position.

[0036] Another beneficial effect of the present invention is:

[0037] Ensure reliable operation of welding system:

[0038] The power-on self-check procedure ensures that all components of the welding system are in good working condition, detects and eliminates potential faults in advance, and effectively avoids production interruptions or welding quality problems caused by component failures during the welding process, thereby ensuring the stability and reliability of the welding system.

[0039] Achieve precise welding environment control:

[0040] Through nitrogen supply and flow regulation, a stable protective atmosphere that meets process requirements is provided for the welding process, effectively preventing oxidation of the welding area, reducing welding defects, improving welding quality, and ensuring the performance and safety of the battery module.

[0041] Flexible adaptation to different battery modules:

[0042] The design of the platform telescopic cylinder and pallet translation assembly enables the welding system to be flexibly adjusted according to battery modules of different sizes and shapes, ensuring that the welding pallet is precisely matched with the battery module, achieving efficient and accurate welding operations, and enhancing the versatility and adaptability of the system.

[0043] Achieve precise welding positioning in three-dimensional space:

[0044] The multi-directional mobile assembly realizes the precise movement and positioning of the welding assembly in three-dimensional space through the cooperation of multi-level slide rails and sliding blocks, meets the requirements of complex welding paths and processes, ensures the accuracy and consistency of welding positions, and improves welding precision and product quality.

[0045] Effectively prevent solder pins from sticking and being damaged:

[0046] After welding is completed, the rotary welding head rotates a certain angle and uses the force generated by the rotation to smoothly separate the welding needle and the nickel sheet, effectively solving the problem of welding needle adhesion in traditional welding methods, reducing damage to the welding needle and nickel sheet, and reducing production costs and maintenance difficulties.

[0047] When the present invention is working, the power supply of the welding system is turned on, and the system automatically performs self-inspections on the motor and slide rail of the multi-directional movable component, the motor and transmission components of the rotary welding pressure head, the air tightness of the nitrogen purge component, the mobility of the joint arm of the welding detection component, and other components to ensure that there are no faults.

[0048] Open the nitrogen supply valve to allow nitrogen to enter the supply pipeline. Check and adjust the flow regulating valve to ensure that the nitrogen flow meets the welding process requirements and ensure a stable purge effect.

[0049] Start the platform telescopic cylinder to drive one side of the support slide to move on the platform moving slide through the platform connecting block, and adjust the width of the support slide according to the size and shape of the battery module.

[0050] The tray translation assembly works, and the tray connecting block of the first translation assembly slides on the first translation rail, driving the welding tray to perform initial translation; the second translation assembly cooperates to change the position through the middle sliding block, so that the battery module is accurately moved to the welding starting position.

[0051] In the multi-directional movable assembly, the first movable slide rail is working, and the second movable slide rail slides on the first movable slide rail through the second sliding blocks at both ends. According to the welding process requirements, it is moved to the horizontal coordinate corresponding to the welding position of the battery module.

[0052] The third movable slide rail is driven by the second movable slide rail to adjust in the vertical direction; the third sliding block slides on the second movable slide rail, driving the sliding fixed block and the limit sliding block to move synchronously, so that the welding assembly can be accurately moved in the vertical direction to the welding height; the upper and lower telescopic cylinders can be fine-tuned to ensure that the distance between the welding assembly and the welding part is appropriate.

[0053] After the vertical positioning is completed, the limit sliding block, under the action of the upper and lower telescopic cylinders, cooperates with the sliding limit groove on the limit block and the sliding fixed block to fine-tune the third movable slide rail in the horizontal direction; the fourth sliding block slides in cooperation with the third movable slide rail inside the limit sliding block to achieve precise position adjustment of the welding assembly in the horizontal plane, so that the rotary welding pressure head is aligned with the welding point.

[0054] The rotating motor starts, driving the fixed support structure to rotate through the transmission shaft, adjusting the rotary welding pressure head to the preset welding angle; at the same time, the nitrogen purge component works, and the flow control valve blows nitrogen to the welding needle at the set flow rate to provide a protective atmosphere.

[0055] After the rotary welding head is adjusted into place, the welding power supply is turned on, and the welding needle performs resistance welding on the electrodes and nickel sheets of the battery module. The current causes the positive and negative electrodes of the battery cell to fuse with the nickel sheet.

[0056] After welding is completed, the rotary motor starts again. The rotary welding head stays at the welding position for a moment and then rotates to a certain angle to separate the welding needle and the nickel sheet. Then the entire welding head is lifted.

[0057] The articulated arm of the welding inspection assembly moves under the action of the adjustment knob, driving the welding inspection needle to move to the top of the welding part for inspection; if the welding quality is qualified, the platform telescopic cylinder starts again to push the welding tray to the unloading position. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings:

[0059] Figure 1 It is a structural diagram of the present invention.

[0060] Figure 2 It is a top view of the structure of the present invention.

[0061] Figure 3 This is the structural diagram of the rotary welding head.

[0062] Figure 4 This is the internal structure diagram of the rotary welding head.

[0063] Figure 5 This is a structural diagram of the fixed clamping block of the rotary welding head.

[0064] Figure 6 This is a structural diagram of the multi-directional mobile component.

[0065] Figure 7 This is a structural diagram of the third movable slide rail and welding assembly.

[0066] Figure 8 It is a structural diagram of the sliding fixed block and the limiting sliding block.

[0067] Figure 9 This is a structural diagram of the welding platform assembly.

[0068] Figure 10 This is a structural diagram of the welding pallet.

[0069] Figure 11 This is a structural diagram of the welding detection component.

[0070] Figure 12 It is the workflow diagram of the present invention.

[0071] Among them, 1 support frame, 2 support plate, 3 multi-directional moving assembly, 301 first moving slide rail, 302 second moving slide rail, 303 second sliding block, 304 third moving slide rail, 305 third sliding block, 306 sliding fixed block, 307 limit sliding block, 308 upper and lower telescopic cylinder, 309 fixed seat, 310 sliding limit groove, 311 limit block, 312 fourth sliding block, 4 welding assembly, 5 rotary welding pressure head, 501 rotating motor, 502 transmission shaft, 503 fixed support structure, 504 welding needle, 505 nitrogen purge assembly, 506 fixed block, 507 Fixed connecting shaft, 508 fixed connecting block, 509 fixed clamping block, 510 fixed limit slot, 6 welding detection assembly, 601 detection support base, 602 joint arm, 603 adjustment knob, 604 welding detection needle, 7 welding platform assembly, 701 support slide rail, 702 welding pallet, 703 platform moving slide rail, 704 platform connecting block, 705 platform telescopic cylinder, 706 pallet translation assembly, 707 first translation assembly, 708 second translation assembly, 709 first translation slide rail, 710 pallet connecting block, 711 intermediate sliding block, 712 second translation slide rail. DETAILED DESCRIPTION

[0072] In order to make people in this technical field better understand the technical solution in this application, Figure 1-12 The present invention is further described in detail. The following examples are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0073] like Figure 1-12 A welding system for a new energy battery module shown in the figure includes a welding system body, which includes a support frame 1, and the support frame 1 is equipped with a support plate 2. A multi-directional movable component 3 is equipped on the support plate 2. The multi-directional movable component 3 is connected to a welding component 4, and the welding component 4 includes at least one rotating welding pressure head 5. The welding component 4 is also equipped with a welding detection component 6, and a welding platform component 7 is arranged in the multi-directional movable component 3.

[0074] The rotary welding pressure head 5 includes a rotary motor 501, which is equipped with a transmission shaft 502. The other end of the transmission shaft 502 is equipped with a fixed support structure 503. The rotary welding pressure head 5 is connected to the multi-directional movable component 3 through the fixed support structure 503. A bearing is provided between the fixed support structure 503 and the transmission shaft 502. The rotary motor 501 controls the rotation angle of the rotary welding pressure head 5; a welding needle 504 is fixedly installed below the fixed support structure 503, and the welding needle 504 is equipped with a nitrogen purge component 505. The nitrogen purge component 505 blows nitrogen to the welding area through the welding gun.

[0075] The fixed support structure 503 includes a fixed block 506, and several groups of fixed connecting shafts 507 are inserted and slidably arranged inside the fixed block 506. A fixed connecting block 508 is arranged below the fixed connecting shaft 507. Multiple groups of fixed clamping blocks 509 are arranged below the fixed connecting block 508. Fixed limiting grooves 510 are arranged between adjacent fixed clamping blocks 509. The fixed clamping blocks 509 limit the welding needle 504 through the fixed limiting grooves 510; the nitrogen purge assembly 505 includes a nitrogen supply pipeline and a flow regulating valve arranged on the nitrogen supply pipeline. The nitrogen supply pipeline is connected to the welding needle 504.

[0076] The welding platform assembly 7 includes a support slide 701 arranged on the support frame 1, a welding tray 702 is arranged on the support slide 701, one side of the support slide 701 is fixedly set on the support frame 1, a platform moving slide 703 is arranged below the support slide 701, and a platform connecting block 704 is provided on the other side of the support guide rail. The platform connecting block 704 is connected to the platform moving slide 703 below the support slide 701, and a platform telescopic cylinder 705 is provided on the support frame 1 on the other side of the platform connecting block 704. A travel switch is also provided on the support slide 701.

[0077] A pallet translation assembly 706 is arranged below the supporting slide rail 701, and the pallet translation assembly 706 includes a first translation assembly 707 and a second translation assembly 708 arranged perpendicular to the first translation assembly 707, and the first translation assembly 707 is arranged higher than the second translation assembly 708; the first translation assembly 707 includes a first translation slide rail 709, and a pallet connecting block 710 is slidingly arranged above the first translation slide rail 709, and the pallet connecting block 710 is detachably connected to the welding pallet 702; an intermediate sliding block 711 is arranged between the first translation assembly 707 and the second translation assembly 708, and the second translation assembly 708 includes a second translation slide rail 712.

[0078] The multi-directional movable component 3 includes a first movable slide rail 301 arranged on both sides of the support frame 1, and the first movable slide rail 301 is cooperated with a second movable slide rail 302. The second movable slide rail 302 is arranged vertically as a whole. The two ends of the second movable slide rail 302 are cooperated with a second sliding block 303. The second movable slide rail 302 slides on the first movable slide rail 301 through the second sliding block 303 to achieve position change. The second movable slide rail 302 is also cooperated with a third movable slide rail 304, and the third movable slide rail 304 is connected to the welding component 4.

[0079] A third sliding block 305 is provided on the second movable slide rail 302, and the third movable slide rail 304 is provided on the third sliding block 305. The third sliding block 305 is connected to a sliding fixed block 306, and the sliding fixed block 306 has a C-shaped structure as a whole. The third movable slide rail 304 is provided inside the sliding fixed block 306, and a limiting sliding block 307 is provided on the outside of the sliding fixed block 306. The limiting sliding block 307 has a C-shaped structure as a whole and is arranged opposite to the sliding fixed block 306. The limiting sliding block 307 is cooperated with an upper and lower telescopic cylinder 308, and the output end of the upper and lower telescopic cylinder 308 is provided with a fixed seat 309, and the welding assembly 4 is provided on the fixed seat 309.

[0080] The upper and lower sides of the sliding fixed block 306 are respectively provided with sliding limit grooves 310, and the upper and lower sides of the limit sliding block 307 are provided with limit blocks 311 corresponding to the sliding limit grooves 310. The interior of the limit sliding block 307 is provided with a fourth sliding block 312 to cooperate with the third movable slide rail 304.

[0081] The welding detection assembly 6 includes a detection support base 601, which is equipped with at least one articulated arm 602. An adjustment knob 603 is provided between adjacent articulated arms 602, and a welding detection needle 604 is provided at the end of the articulated arm 602.

[0082] A process method for a welding system for a new energy battery module, the process method comprising the following steps:

[0083] Step 1: Turn on the welding system power supply, and the system automatically performs a self-check on each component, including the operating status of the motor and slide rail of the multi-directional moving component 3, the motor and transmission components of the rotary welding pressure head 5, the airtightness of the nitrogen purge component 505, and the mobility of the articulated arm 602 of the welding detection component 6, to ensure that all components are fault-free;

[0084] Step 2: Open the nitrogen supply valve to allow nitrogen to enter the nitrogen supply pipeline, check the flow regulating valve, and adjust the nitrogen flow to the appropriate value according to the welding process requirements to ensure a stable nitrogen purge effect;

[0085] Step 3: Start the platform telescopic cylinder 705, which drives one side of the support rail 701 to move on the platform moving rail 703 through the platform connecting block 704. According to the size and shape of the battery module, the width of the support rail 701 is adjusted to match the size of the battery module;

[0086] Step 4: The tray translation assembly 706 begins to work. The tray connecting block 710 in the first translation assembly 707 slides on the first translation rail 709, driving the welding tray 702 to perform preliminary translation adjustment in the horizontal direction. At the same time, the second translation assembly 708 cooperates with the first translation assembly 707 to achieve position change through the intermediate sliding block 711, so that the battery module on the welding tray 702 is accurately moved to the welding starting position below the welding assembly 4.

[0087] Step 5: The first movable rail 301 in the multi-directional movable assembly 3 starts working. The second movable rail 302 slides on the first movable rail 301 through the second sliding blocks 303 at both ends to achieve preliminary horizontal positioning. According to the welding process requirements, the second movable rail 302 is moved to the horizontal coordinate corresponding to the battery module welding position;

[0088] Step 6: The third movable rail 304 is adjusted vertically under the influence of the second movable rail 302; the third sliding block 305 slides on the second movable rail 302, driving the sliding fixed block 306 and the limit sliding block 307 to move synchronously, thereby accurately moving the welding assembly 4 fixed to the fixing seat 309 in the vertical direction to the welding height; the upper and lower telescopic cylinders 308 can be fine-tuned as needed to ensure that the welding assembly 4 maintains an appropriate distance from the welding part of the battery module;

[0089] Step 7: After the vertical positioning is completed, the limiting sliding block 307, under the action of the upper and lower telescopic cylinders 308, cooperates with the sliding limiting groove 310 on the sliding fixed block 306 through the limiting block 311 to fine-tune the third movable slide rail 304 in the horizontal direction; the fourth sliding block 312 slides inside the limiting sliding block 307 in cooperation with the third movable slide rail 304 to achieve precise position adjustment of the welding assembly 4 in the horizontal plane, ensuring that the rotary welding pressure head 5 can be accurately aligned with the welding point;

[0090] Step 8: The rotating motor 501 is started, driving the fixed support structure 503 to rotate via the transmission shaft 502, adjusting the rotary welding head 5 to a preset welding angle; at the same time, the nitrogen purge assembly 505 starts working, and the flow regulating valve on the nitrogen supply line blows nitrogen to the welding needle 504 at a set flow rate to provide a protective atmosphere for the welding process;

[0091] Step 9: After the rotary welding head 5 is adjusted into position, the welding power supply is turned on, and the welding needle 504 begins to perform resistance welding on the electrodes and nickel sheet of the battery module. During the welding process, the current forms a short circuit high temperature on the surface of the product, so that the positive and negative electrodes of the battery cell and the nickel sheet are welded together;

[0092] Step 10: After welding is completed, according to the preset program, the rotary motor 501 is started again, and the rotary welding head 5 stays at the welding position for a while, and then rotates a certain angle, using the force generated by the rotation to separate the welding needle 504 and the nickel sheet; then the entire welding head is lifted;

[0093] Step 11: The articulated arm 602 of the welding detection assembly 6 moves flexibly under the action of the adjustment knob 603, driving the welding detection needle 604 to move above the welding part. The welding detection needle 604 detects the welding part. If the welding quality inspection is qualified, the platform telescopic cylinder 705 is started again to push the welding tray 702 to the unloading position.

[0094] When the present invention is working, the welding system power is turned on, and the system automatically performs self-inspections on the motor and slide rail of the multi-directional moving component 3, the motor and transmission components of the rotary welding pressure head 5, the air tightness of the nitrogen purge component 505, the mobility of the articulated arm 602 of the welding detection component 6, and other components to ensure that there are no faults.

[0095] Open the nitrogen supply valve to allow nitrogen to enter the supply pipeline. Check and adjust the flow regulating valve to ensure that the nitrogen flow meets the welding process requirements and ensure a stable purge effect.

[0096] Start the platform telescopic cylinder 705, and drive one side of the support slide 701 to move on the platform moving slide 703 through the platform connecting block 704, and adjust the width of the support slide 701 according to the size and shape of the battery module.

[0097] The tray translation assembly 706 works, and the tray connecting block 710 of the first translation assembly 707 slides on the first translation rail 709, driving the welding tray 702 to perform initial translation; the second translation assembly 708 cooperates and changes its position through the middle sliding block 711, so that the battery module is accurately moved to the welding starting position.

[0098] In the multi-directional movable assembly 3, the first movable slide rail 301 is working, and the second movable slide rail 302 slides on the first movable slide rail 301 through the second sliding blocks 303 at both ends, and is moved to the horizontal coordinate corresponding to the battery module welding position according to the welding process requirements.

[0099] The third movable rail 304 is adjusted in the vertical direction under the drive of the second movable rail 302; the third sliding block 305 slides on the second movable rail 302, driving the sliding fixed block 306 and the limiting sliding block 307 to move synchronously, so that the welding assembly 4 is accurately moved in the vertical direction to the welding height; the upper and lower telescopic cylinders 308 can be fine-tuned to ensure that the distance between the welding assembly 4 and the welding part is appropriate.

[0100] After the vertical positioning is completed, the limiting sliding block 307, under the action of the upper and lower telescopic cylinders 308, cooperates with the sliding limiting groove 310 on the sliding fixed block 306 through the limiting block 311 to fine-tune the third movable slide rail 304 in the horizontal direction; the fourth sliding block 312 slides in cooperation with the third movable slide rail 304 inside the limiting sliding block 307 to achieve precise position adjustment of the welding assembly 4 in the horizontal plane, so that the rotary welding pressure head 5 is aligned with the welding point.

[0101] The rotating motor 501 is started, driving the fixed support structure 503 to rotate through the transmission shaft 502, adjusting the rotary welding pressure head 5 to the preset welding angle; at the same time, the nitrogen purge component 505 works, and the flow control valve blows nitrogen to the welding needle 504 at a set flow rate to provide a protective atmosphere.

[0102] After the rotary welding head 5 is adjusted into position, the welding power supply is turned on, and the welding needle 504 performs resistance welding on the electrodes and nickel sheet of the battery module, and the current causes the positive and negative electrodes of the battery cell to be welded to the nickel sheet.

[0103] After welding is completed, the rotary motor 501 is started again, and the rotary welding head 5 stays at the welding position for a while and then rotates to a certain angle to separate the welding needle 504 from the nickel sheet, and then the entire welding head is lifted.

[0104] The articulated arm 602 of the welding detection assembly 6 moves under the action of the adjustment knob 603, driving the welding detection needle 604 to move above the welding part for detection; if the welding quality is qualified, the platform telescopic cylinder 705 is started again to push the welding tray 702 to the unloading position.

[0105] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some of the technical features therein according to the disclosed technical content without creative labor, and these substitutions and modifications are all within the protection scope of the present invention.

Claims

1. A welding system for a new energy battery module, comprising a welding system body, characterized in that: The welding system body comprises a support frame (1), the support frame (1) is provided with a support plate (2), a multi-directional movable assembly (3) is provided on the support plate (2), the multi-directional movable assembly (3) is connected to a welding assembly (4), the welding assembly (4) comprises at least one rotating welding pressure head (5), the welding assembly (4) is further provided with a welding detection assembly (6), and a welding platform assembly (7) is provided in the multi-directional movable assembly (3).

2. A welding system for a new energy battery module according to claim 1, characterized in that: The rotary welding head (5) comprises a rotary motor (501), the rotary motor (501) is provided with a transmission shaft (502), the other end of the transmission shaft (502) is provided with a fixed support structure (503), the rotary welding head (5) is connected to the multi-directional movable component (3) via the fixed support structure (503), a bearing is provided between the fixed support structure (503) and the transmission shaft (502), and the rotary motor (501) controls the rotation angle of the rotary welding head (5); a welding needle (504) is fixedly installed below the fixed support structure (503), the welding needle (504) is provided with a nitrogen purge component (505), and the nitrogen purge component (505) blows nitrogen to the welding area through the welding gun.

3. A welding system for a new energy battery module according to claim 2, characterized in that: The fixed support structure (503) includes a fixed block (506), a plurality of groups of fixed connecting shafts (507) are inserted and slidably arranged inside the fixed block (506), a fixed connecting block (508) is arranged below the fixed connecting shaft (507), a plurality of groups of fixed clamping blocks (509) are arranged below the fixed connecting block (508), and fixed limiting grooves (510) are arranged between adjacent fixed clamping blocks (509), and the fixed clamping blocks (509) limit the welding needle (504) through the fixed limiting grooves (510); the nitrogen purge assembly (505) includes a nitrogen supply pipeline and a flow regulating valve arranged on the nitrogen supply pipeline, and the nitrogen supply pipeline is connected to the welding needle (504).

4. The welding system for a new energy battery module according to claim 1, characterized in that: The welding platform assembly (7) comprises a support rail (701) arranged on a support frame (1), a welding tray (702) being arranged on the support rail (701), one side of the support rail (701) being fixedly arranged on the support frame (1), a platform moving rail (703) being arranged below the support rail (701), a platform connecting block (704) being arranged in cooperation with the other side of the support rail, the platform connecting block (704) being connected to the platform moving rail (703) below the support rail (701), a platform telescopic cylinder (705) being arranged on the support frame (1) on the other side of the platform connecting block (704), and a travel switch being further arranged on the support rail (701).

5. A welding system for a new energy battery module according to claim 4, characterized in that: A pallet translation assembly (706) is provided below the support slide rail (701), and the pallet translation assembly (706) includes a first translation assembly (707) and a second translation assembly (708) vertically arranged with respect to the first translation assembly (707), wherein the first translation assembly (707) is arranged higher than the second translation assembly (708); the first translation assembly (707) includes a first translation slide rail (709), and a pallet connection block (710) is slidingly provided above the first translation slide rail (709), and the pallet connection block (710) is detachably connected to the welding pallet (702); an intermediate sliding block (711) is provided between the first translation assembly (707) and the second translation assembly (708), and the second translation assembly (708) includes a second translation slide rail (712).

6. The welding system for a new energy battery module according to claim 1, characterized in that: The multi-directional movable assembly (3) comprises a first movable slide rail (301) arranged on both sides of the support frame (1); the first movable slide rail (301) is provided with a second movable slide rail (302); the second movable slide rail (302) is provided vertically as a whole; second sliding blocks (303) are provided at both ends of the second movable slide rail (302); the second movable slide rail (302) slides on the first movable slide rail (301) through the second sliding blocks (303) to achieve position change; the second movable slide rail (302) is also provided with a third movable slide rail (304); the third movable slide rail (304) is connected to the welding assembly (4).

7. A welding system for a new energy battery module according to claim 6, characterized in that: A third sliding block (305) is provided on the second movable slide rail (302), the third movable slide rail (304) is provided on the third sliding block (305), the third sliding block (305) is connected to a sliding fixed block (306), the sliding fixed block (306) is in a C-shaped structure as a whole, the third movable slide rail (304) is provided inside the sliding fixed block (306), the sliding fixed block (306) is provided with a limited sliding block (307) on the outside, the limited sliding block (307) is in a C-shaped structure as a whole, and is provided opposite to the sliding fixed block (306), the limited sliding block (307) is provided with an upper and lower telescopic cylinder (308), the output end of the upper and lower telescopic cylinder (308) is provided with a fixed seat (309), and the welding assembly (4) is provided on the fixed seat (309).

8. The welding system for a new energy battery module according to claim 7, characterized in that: The upper and lower sides of the sliding fixed block (306) are respectively provided with sliding limit grooves (310); the upper and lower sides of the limit sliding block (307) are provided with limit blocks (311) corresponding to the sliding limit grooves (310); and the interior of the limit sliding block (307) is provided with a fourth sliding block (312) in cooperation with the third movable slide rail (304).

9. The welding system for a new energy battery module according to claim 1, characterized in that: The welding detection assembly (6) comprises a detection support base (601), the detection support base (601) is provided with at least one articulated arm (602), an adjustment knob (603) is provided between adjacent articulated arms (602), and a welding detection needle (604) is provided at the end of the articulated arm (602).

10. A process method for a welding system for a new energy battery module, characterized in that: The process comprises the following steps: Step 1: Turn on the power of the welding system, and the system automatically performs self-inspection on each component, including the operating status of the motor and slide rail of the multi-directional moving component (3), the motor and transmission components of the rotary welding pressure head (5), the airtightness of the nitrogen purge component (505), the mobility of the joint arm (602) of the welding detection component (6), etc., to ensure that each component is fault-free; Step 2: Open the nitrogen supply valve to allow nitrogen to enter the nitrogen supply pipeline, check the flow regulating valve, and adjust the nitrogen flow to the appropriate value according to the welding process requirements to ensure a stable nitrogen purge effect; Step 3: Start the platform telescopic cylinder (705) to drive one side of the support rail (701) to move on the platform moving rail (703) through the platform connecting block (704). According to the size and shape of the battery module, the width of the support rail (701) is adjusted to match the size of the battery module; Step 4: The tray translation assembly (706) starts working, and the tray connection block (710) in the first translation assembly (707) slides on the first translation rail (709), driving the welding tray (702) to perform preliminary translation adjustment in the horizontal direction; at the same time, the second translation assembly (708) cooperates with the first translation assembly (707) to achieve position change through the middle sliding block (711), so that the battery module on the welding tray (702) is accurately moved to the welding starting position below the welding assembly (4); Step 5: The first movable slide rail (301) in the multi-directional movable assembly (3) starts to work, and the second movable slide rail (302) slides on the first movable slide rail (301) through the second sliding blocks (303) at both ends to achieve preliminary positioning in the horizontal direction. According to the welding process requirements, the second movable slide rail (302) is moved to the horizontal coordinate corresponding to the welding position of the battery module; Step 6: The third movable rail (304) is adjusted in the vertical direction under the drive of the second movable rail (302); the third sliding block (305) slides on the second movable rail (302), driving the sliding fixed block (306) and the limit sliding block (307) to move synchronously, so that the welding assembly (4) fixed on the fixing seat (309) is accurately moved in the vertical direction to the welding height; the upper and lower telescopic cylinders (308) can be fine-tuned as needed to ensure that the welding assembly (4) maintains an appropriate distance from the welding part of the battery module; Step 7: After the vertical positioning is completed, the limiting sliding block (307) cooperates with the sliding limiting groove (310) on the sliding fixed block (306) through the limiting block (311) under the action of the upper and lower telescopic cylinders (308) to fine-tune the third movable slide rail (304) in the horizontal direction; the fourth sliding block (312) slides in cooperation with the third movable slide rail (304) inside the limiting sliding block (307) to achieve precise position adjustment of the welding assembly (4) in the horizontal plane, ensuring that the rotary welding pressure head (5) can be accurately aligned with the welding point; Step 8: The rotating motor (501) is started, and the fixed support structure (503) is driven to rotate via the transmission shaft (502), and the rotating welding pressure head (5) is adjusted to a preset welding angle; at the same time, the nitrogen purge assembly (505) starts working, and the flow regulating valve on the nitrogen supply line blows nitrogen to the welding needle (504) according to the set flow rate, providing a protective atmosphere for the welding process; Step 9: After the rotary welding head (5) is adjusted to the correct position, the welding power supply is turned on, and the welding needle (504) begins to perform resistance welding on the electrodes and nickel sheet of the battery module; during the welding process, the current forms a short circuit high temperature on the surface of the product, so that the positive and negative electrodes of the battery cell and the nickel sheet are welded together; Step 10: After the welding is completed, according to the preset program, the rotary motor (501) is started again, so that the rotary welding head (5) stays at the welding position for a while, and then rotates to a certain angle, using the force generated by the rotation to separate the welding needle (504) and the nickel sheet; then the entire welding head is lifted; Step 11: The articulated arm (602) of the welding detection assembly (6) moves flexibly under the action of the adjustment knob (603), driving the welding detection needle (604) to move above the welding part. The welding detection needle (604) detects the welding part. If the welding quality test is qualified, the platform telescopic cylinder (705) is started again to push the welding tray (702) to the unloading position.

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