Soft pack battery assembly welding device and method

Abstract

The present invention relates to the technical field of soft-pack battery assembly processing, and more specifically to a soft-pack battery assembly welding device and method thereof, which comprises a loading assembly, a tab processing assembly, a gluing assembly, a stacking assembly, and a bending assembly capable of sequentially processing and completing pre-processing of battery cells. The tab processing assembly and the gluing assembly are connected by a transfer robot arm for battery cell transfer, and the stacking assembly is connected by a transmission member for battery cell transfer. The tab processing assembly, the gluing assembly, the stacking assembly, and the bending assembly are all provided with a detection structure to promptly detect processing errors in various links during pre-processing of the battery cells. The detection structure comprises an electrode test piece and a dimension inspection piece in the tab processing assembly, an observation piece in the gluing assembly, a detection piece in the stacking assembly, and a position finder in the bending assembly. This solves the problem in the prior art that pre-processing equipment for soft-pack batteries cannot promptly detect each process, which, to a certain extent, causes a decrease in the final yield.

Description

Technical Field

[0001] The present invention relates to the technical field of soft-pack battery assembly processing, and in particular to a soft-pack battery assembly welding device and method thereof. Background Art

[0002] In the field of welding processing of soft-pack battery packs, a positioning fixture with a positioning reflow plate function is often used to meet the process requirements of installing the return busbar. However, the structural design of the existing positioning fixture has significant technical bottlenecks: on the one hand, the fixture structure with integrated return busbar positioning function is incompatible with the installation process of the soft-pack battery pack protective shell, resulting in inconvenient installation of the protective shell and disrupting the continuity of the processing process; on the other hand, to achieve stable positioning of the return busbar, the fixture generally adopts a rigid clamping structure such as a screw nut. Although this design ensures positioning accuracy, it seriously restricts the convenience of taking and placing the soft-pack battery pack and the shell.

[0003] When the bottom surface of the protective casing needed to be flipped and welded, the difficulty of handling it due to the rigid clamping structure became even more pronounced. This made it difficult for operators to efficiently complete the flip welding process, causing a hiccup in the otherwise smooth process. These technical flaws directly hindered operator processing, extending the processing cycle for individual products and reducing the overall efficiency of soft-pack battery packs, making it difficult to meet the urgent need for efficiency improvements in large-scale production. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the soft-pack battery assembly processing device cannot balance the differences between the tab welding and the shell welding, thereby reducing the processing efficiency of the soft-pack battery pack, and to provide a soft-pack battery assembly welding device and method.

[0005] In order to solve the shortcomings of the above technical problems, the present invention adopts the following technical solutions: a soft-pack battery assembly welding device, which has a transport member capable of transporting a first clamping tray and a second clamping tray, and the transport member is sequentially provided with a tab welding assembly, a measuring assembly, an upper shell assembly, a first welding assembly, a flipping assembly, a second welding assembly, a detection assembly, and a downline robot arm to complete the welding of the battery pack tabs and the installation of the shell;

[0006] The upper shell assembly includes an upper shell base that carries the transport member, and the upper shell base is provided with a first opening and closing assembly that can open the first clamping tray and a second opening and closing assembly that can open the second clamping tray. A tray changing member is provided between the first opening and closing assembly and the second opening and closing assembly to transfer the battery pack that has been tab-processed in the first clamping tray to the second clamping tray for clamping;

[0007] The tray changing member includes a tray changing rack provided on the upper shell base, the tray changing rack can drive a first clamping claw capable of clamping and placing a battery pack, and move along the transport direction of the transport member;

[0008] The first clamping tray clamps the battery pack through a screw-nut pair structure, and the second clamping tray clamps and positions the battery pack by pressing with an elastic structure.

[0009] As a further optimization of a soft-pack battery assembly welding device of the present invention: the tab welding assembly includes a fixed frame that carries a transport member, and a distribution member is provided on the fixed frame that is arranged perpendicular to the transport member to transport the first clamping tray and the battery pack transmitted by the transport member to the tab welding nozzle, and cooperate with the laser welding member provided on the fixed frame to cooperate with the tab welding nozzle to weld the battery pack tabs.

[0010] As a further optimization of a soft-pack battery assembly welding device of the present invention: the measuring component includes a frame that carries a transport member, and the frame is provided with a first detection mechanism, a pressure difference detection member and a DCIR detection member in sequence along the transmission direction of the transport member, and the first detection mechanism includes a camera arranged on the frame to detect the quality of the tab welding after the battery pack welding process.

[0011] As a further optimization of the soft-pack battery assembly welding device of the present invention: a shadowless board corresponding to the camera is provided on the frame, and the shadowless board is a light-transmitting board with a light source provided inside.

[0012] As a further optimization of the soft-pack battery assembly welding device of the present invention: a recycling station is provided at the upper shell base corresponding to the first opening and closing component to recycle the first clamping tray, and two loading parts are provided on the upper shell base perpendicular to the transport part to place the bottom of the shell into the second clamping tray, and a tray changing part is provided to grab the battery pack that has been welded with the tabs in the first clamping tray and place it in the second clamping tray, and the top cover of the shell can be set on the outer periphery of the battery pack.

[0013] As a further optimization of a soft-pack battery assembly welding device of the present invention: the first welding assembly includes a first welding bed that carries a transport part, and the first welding bed is provided with a side welding nozzle and a top welding nozzle that can move corresponding to the side and top edges of the outer shell to cooperate with the first laser driven by the welding robot arm to weld the top of the outer shell.

[0014] As a further optimization of a soft-pack battery assembly welding device of the present invention: the flip assembly includes a flip frame that carries a transport member, and the flip frame is provided with a second opening and closing assembly and a flip clamp for grabbing and placing the battery pack and the shell. The second opening and closing assembly is used to open the second clamping tray for the flip clamp to clamp the battery pack, and the flip clamp is driven by a ninth cylinder and a flip motor provided on the flip frame to flip the battery pack and the shell and then reset them.

[0015] As a further optimization of a soft-pack battery assembly welding device of the present invention: the second welding assembly includes a second welding bed that carries and transports parts, and the second welding bed is provided with a movable top edge welding nozzle and a long side welding nozzle to cooperate with the second laser driven by the welding robot arm to weld the bottom of the outer shell.

[0016] As a further optimization of a soft-pack battery assembly welding device of the present invention: the detection component includes a detection base that carries a transport part, and the detection base is provided with a second opening and closing component and a detection clamp that can grasp and place the shell. The detection clamp can, after the second opening and closing component opens the second clamping tray, command the shell to flip under the drive of the detection cylinder and the rotating part on the detection base, so as to cooperate with the weld observation head set on the corresponding transport part to detect the welding quality of the shell.

[0017] A soft-pack battery assembly welding method uses a tab welding assembly included in a soft-pack battery assembly welding device to perform tab welding. After the tab welding is completed, a first clamping tray and a second clamping tray are replaced and covered with an outer shell. Subsequently, the first welding assembly, a flip assembly and a second welding assembly are used to realize the welding processing of the battery pack.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention provides a transport part and a tab welding assembly, a measuring assembly, an upper shell assembly, a first welding assembly, a flip assembly, a second welding assembly, a detection assembly and an offline robot arm which are sequentially arranged therein, to jointly reinforce the tabs of the stacked battery pack after the tabs are stacked and bent, and at the same time, to cover the outer side of the stacked battery pack with an outer shell to complete the processing of the battery pack. In addition, the system can directly put the installed battery pack into a box for easy transportation. During the shelling process, the upper shell assembly can replace the first clamping tray used by the tab welding assembly with a second clamping tray, and the second clamping tray adopts an elastic structure to effectively realize the clamping and positioning of the stacked battery pack and the outer shell, while being easy to open and close, thereby improving the efficiency of the equipment in flipping and welding the outer shell, balancing the difference between the tab welding and the outer shell welding, and thus improving the processing efficiency of the soft-pack battery pack to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the top view of the structure of the present invention;

[0021] Figure 2 Schematic diagram of the structure of the tab welding assembly of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the dispensing member of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the auxiliary welding part of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the measuring component of the present invention;

[0025] Figure 6 This is a schematic structural diagram of the DCIR detection component of the present invention;

[0026] Figure 7 Schematic diagram of the structure of the upper shell assembly of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the disc changing member of the present invention;

[0028] Figure 9 This is a schematic structural diagram of the upper shell of the present invention;

[0029] Figure 10 Schematic diagram of the structure of the first welding assembly of the present invention;

[0030] Figure 11 This is a schematic structural diagram of the flip assembly of the present invention from a first perspective;

[0031] Figure 12 This is a schematic structural diagram of the flip assembly of the present invention from a second viewing angle;

[0032] Figure 13 is a schematic structural diagram of a second welding assembly of the present invention;

[0033] Figure 14 Schematic diagram of the structure of the detection component of the present invention;

[0034] Markings in the figure: 1. Tab welding assembly; 101. Fixing frame; 102. Auxiliary welding parts; 1021. Auxiliary welding frame; 1022. Longitudinal frame; 1023. Horizontal frame; 1024. Auxiliary fixing frame; 1025. Auxiliary fixing cylinder; 1026. Push plate; 1027. Telescopic rod; 1028. Shock-absorbing spring; 1029. Push plate; 103. Distribution part; 1031. Transmission shaft; 1032. Conveyor chain; 1033. Lifting plate; 1034. Pressing wheel; 1035. Pushing cylinder; 1036. Positioning instrument; 1037. Limiting block; 1038. Cam divider; 1039. Transmission frame; 104. Fireproof assembly; 1041. Guide frame; 1042. Fire extinguisher; 1043. Monitoring part; 105. Tab welding parts; 1051, fourth carrier frame; 1052, variable pitch frame; 1053, auxiliary frame; 1054, positioning frame; 1055, laser welding parts; 106, welding guide; 1061, welding guide frame; 1062, adjustment platform; 1063, detector; 1064, adjustment assembly; 1065, tab welding nozzle; 2, measuring assembly; 201, frame; 202, first detection mechanism; 2021, camera; 2022, first mounting plate; 2023, first support frame; 203, shadowless board; 204, second support frame; 205, pressure difference detection part; 2051, detection rod; 2052, first cylinder; 2053, first slide plate; 206, DCIR detection part; 2061, second fixed plate ; 2062, connecting plate; 2063, measuring spring; 2064, second cylinder; 207, positioning assembly; 2071, first swing wheel; 2072, vertical plate; 2073, second swing wheel; 2074, horizontal plate; 3, sampling station; 4, transport part; 5, upper shell assembly; 501, upper shell base; 502, first opening and closing assembly; 503, plate changing part; 5031, first clamping claw; 5032, plate changing rack; 50321, main rack; 50322, auxiliary rack; 50323, vertical rack; 504, recycling station; 505, second opening and closing assembly; 5051, opening and closing movable plate; 5052, pulling cylinder; 5053, opening and closing cylinder; 506, loading part; 5061, loading seat; 50 62. Gantry seat; 5063. Loading gantry; 50631. First upper shell gantry; 50632. Second upper shell gantry; 50633. Third upper shell gantry; 5064. Claw shell cylinder; 5065. Shell storage rack; 5066. Gluing head; 5067. Confirmation head; 5068. Shell removal cylinder; 6. First welding assembly; 601. First welding bed; 602. Welding rack; 603. Seventh cylinder; 604. First sliding seat; 605. Side welding nozzle; 606. First mounting seat; 607. Positioning image machine; 608. Eighth cylinder; 609. Constant pressure plate; 6010. First laser; 6011. Push plate; 6012. Flange; 6013. Sliding rod; 6014. Top welding nozzle; 7. Flip assembly;701, flip seat; 702, flip frame; 703, second mounting plate; 704, ninth cylinder; 705, flip slide; 706, flip motor; 707, flip clamp; 8, second welding assembly; 801, second welding bed; 802, long-side welding frame; 803, distance adjustment cylinder; 804, angle plate; 805, long-side welding nozzle; 806, docking cylinder; 807, displacement bracket; 9, inspection assembly; 901, inspection base; 902, inspection frame; 903, inspection clamp; 904, inspection slide; 905, inspection cylinder; 906, inspection carrier; 907, weld observation head; 10, offline robotic arm; 11, first clamping tray; 12, second clamping tray. DETAILED DESCRIPTION

[0035] In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with examples, but the content of the present invention is not limited to the following examples.

[0036] like Figure 1 As shown, a soft-pack battery assembly welding device has a transport part 4 and a tab welding assembly 1, a measuring assembly 2, an upper shell assembly 5, a first welding assembly 6, a flip assembly 7, a second welding assembly 8, a detection assembly 9 and a downline robot arm 10 arranged in sequence along the transport part 4, thereby reinforcing the tabs of the stacked battery pack after the tabs are stacked and bent, and at the same time, covering the outer side of the stacked battery pack with a shell to complete the processing of the battery pack, and at the same time, the installed battery pack can be directly put into the box for convenient transportation. During the shelling process, the upper shell assembly 5 can replace the first clamping tray 11 used by the tab welding assembly 1 with the second clamping tray 12, and the second clamping tray 12 uses an elastic structure to achieve clamping and positioning of the stacked battery pack and the shell, and can be easily opened and closed to improve the efficiency of the equipment in flipping and welding the shell, that is, to improve the efficiency of processing the battery pack.

[0037] like Figure 2As shown, the tab welding assembly 1 has a fixing frame 101 that can play a supporting role. In the length direction of the fixing frame 101, a distribution piece 103 and a tab welding piece 105 are sequentially arranged. More importantly, an auxiliary welding piece 102 and a welding guide piece 106 are assembled above the distribution piece 103. These two major components work together with the tab welding piece 105 to complete the tab welding process. The distribution piece 103 is responsible for accurately positioning the first clamping tray 11 and the soft-pack battery pack conveyed on the transport piece 4 to the corresponding positions of the auxiliary welding piece 102 and the welding guide piece 106. Subsequently, through the adjustment of the distribution piece 103, the soft-pack battery pack is lifted to a specific height to ensure that its tabs are precisely aligned with the auxiliary welding piece 102 and the welding guide piece 106. In addition, this process also lifts the soft-pack battery pack into a relatively independent space, aiming to reduce interference from external factors, thereby ensuring the accuracy and stability of the tab welding operation. When the soft-pack battery pack moves to the predetermined position, the auxiliary welding part 102 will adjust its own posture and drive the welding guide 106 to initially align with the tab of the soft-pack battery pack. At the same time, the welding guide 106 will perform precise measurements, and the auxiliary welding part 102 will be adjusted according to the measurement results to ensure that the welding guide 106 and the tab are accurately aligned. Next, the welding guide 106 cooperates with the tab welding part 105 to weld the tab. After the welding of the tab on one side is completed, the distribution part 103 turns the soft-pack battery pack and repeats the above operation to complete the welding of the tab on the other side. After the tabs on both sides are welded, the distribution part 103 operates in reverse and transfers the welded soft-pack battery pack back to the transport part 4 for use in subsequent processing steps.

[0038] like Figure 3As shown, the distribution member 103 is composed of a transmission frame 1039 corresponding to the transport member 4. The transmission frame 1039 is equipped with two transmission shafts 1031, one of which is driven by a drive motor and can rotate forward and backward. Both transmission shafts 1031 are equipped with conveying sprockets to drive the conveying chain 1032 tensioned on the two transmission shafts 1031 to rotate in a circular motion. This is to improve the transmission efficiency and ensure the stable transmission of the soft-pack battery pack. The conveying chain 1032 consists of two chains, and the chain links are arranged in parallel. The outer side of the chain link is engaged with the two bottoms of the protective plate. The protective plate is designed in an inverted U shape to protect the surface of the soft-pack battery pack, while increasing the friction of the soft-pack battery pack during transmission and reducing the risk of it slipping on the conveying chain 1032. The drive motors utilize forward and reverse stepper motors, which offer a simple structure, convenient control, and reliable operation. These motors enable forward and reverse cycles of the two transmission chains, enabling stable bidirectional transport of soft-pack battery packs, enhancing the equipment's flexibility and ensuring a smooth production process. Two conveyor sprockets and two conveyor chains 1032 are each mounted on either end of the drive shaft 1031 within the transmission frame 1039. This enhances the load-bearing capacity of the dispensing member 103 and ensures the stability of the soft-pack battery packs after they are moved to their vertical positions at the workstations. A lifting cylinder 1035, connected to the fixed frame 101, is positioned between the two transmission chains. This lifting cylinder 1035 is driven in rotation by a cam divider 1038 mounted on the fixed frame 101. A lifting disc 1033 is fixedly mounted on the telescopic end of the lifting cylinder 1035. The edge of the lifting disc 1033 aligns with a position finder 1036, an infrared sensor, mounted on the fixed frame 101. When the infrared rays emitted by the positioner 1036 are blocked by the first clamping tray 11 holding the battery pack, the two conveyor chains 1032 will stop operating. The lifting cylinder 1035 will then push the lifting plate 1033 to move the first clamping tray 11 and the battery pack upward to the corresponding height. The fixed frame 101 is equipped with pressing wheels 1034 on both sides of the lifting plate 1033 along the rotation direction of the conveyor chain 1032. The pressing wheels 1034 are pushed by auxiliary cylinders installed on the fixed frame 101. When the first clamping tray 11 is pushed to the appropriate height and the angle is adjusted by the cam divider 1038, the two pressing wheels 1034 will clamp and position the first clamping tray 11, thereby further ensuring the stability of the first clamping tray 11 during the lug welding process. The fixing frame 101 is also provided with a limiting block 1037 driven by a limiting cylinder for vertical displacement. The limiting block 1037 can prevent the first clamping tray 11 from changing position due to the vibration of the pushing cylinder 1035 during the process of moving up and down or changing angles. This is to reduce the possibility of positional changes between the first clamping tray 11 and the auxiliary welding parts 102 and the welding guide 106 after the angle position is changed. In other words, it reduces the time for repeated calibration of the auxiliary welding parts 102 and the welding guide 106 with the tab, thereby ensuring the efficiency of the tab welding process and fixation.When the first clamping tray 11 needs to be imported or exported, the limiting cylinder can move the limiting block 1037 downward to enable the first clamping tray 11 to be stably imported or exported.

[0039] like Figure 4As shown, the auxiliary welding part 102 includes an auxiliary welding frame 1021 and a longitudinal frame 1022 provided on the fixed frame 101. A push-up cylinder 1035 is fixedly installed at the center of the auxiliary welding frame 1021. The push-up cylinder 1035 drives a push plate 1026. Telescopic rods 1027 are installed at the four corners of the push plate 1026. The telescopic ends of the four telescopic rods 1027 are fixedly connected to a push plate 1029, and the outer periphery of the telescopic rods 1027 is surrounded by a shock-absorbing spring 1028 provided between the push plate 1029 and the push plate 1026. After the push-up cylinder 1035 pushes the soft-pack battery pack to a suitable height, the auxiliary cylinder 1025 will drive the push plate 1029 and the push plate 1026 to press the top of the battery pack after the angle adjustment of the soft-pack battery pack is completed, so as to further stabilize the position of the soft-pack battery pack, that is, to maintain the position stability of the tab during the processing. As the push plate 1029 presses against the soft-pack battery pack, the damping spring 1028 mitigates the vibration caused by the extension of the auxiliary cylinder 1025, thereby reducing the positional shift of the soft-pack battery pack caused by this vibration. The longitudinal frame 1022 drives the transverse frame 1023 to move longitudinally, while the transverse frame 1023 drives the welding guide 106 to move laterally, adjusting the position of the welding guide 106 to align with the tab. The welding guide 106 comprises a welding guide frame 1061, which is driven by a transverse frame 1023 for lateral displacement. An adjustment platform 1062 is located at the bottom of the welding guide frame 1061, on which four detectors 1063 are mounted. These four detectors 1063 are arranged at an angle, allowing their laser beams to intersect and cross the small openings of two tab welding nozzles 1065 on the welding guide frame 1061, corresponding to the four vertices of the soft-pack battery tab. This helps determine the welding position of the soft-pack battery tab. After reflecting at the four vertices of the soft-pack battery tab, the laser beam again crosses the welding opening of the tab welding nozzle 1065 and is detected by the detectors 1063. This process not only enables precise measurement and verification of the tab position, but also improves the reliability and stability of the measurement. During the detection process, the operation of the longitudinal frame 1022 and the transverse frame 1023 is controlled by the corresponding electronic control system to ensure that the soft-pack battery tab and the tab welding nozzle 1065 are precisely aligned. After the position detection is completed, the adjustment platform 1062 will drive the corresponding detector 1063 to make way, allowing the tab welding nozzle 1065 to cooperate with the tab welding piece 105 for tab welding. The distribution member 103, the welding guide 106, and the auxiliary welding frame 1021 are each equipped with two longitudinal frames 1022, two transverse frames 1023, and two auxiliary fixed frames 1024, which are arranged in sequence along the width direction of the fixed frame 101, thereby improving the efficiency of tab welding. The fourth carrier 1051 provided on the fixed frame 101 is equipped with a variable pitch frame 1052. The variable pitch frame 1052 drives the auxiliary frame 1053 to approach the tab welding nozzle 1065, and the auxiliary frame 1053 drives the positioning frame 1054 to move along the width direction of the fixed frame 101.A laser welding component 1055 and an infrared sensor aligned with the tab welding nozzle 1065 are fixedly mounted on the end of the positioning frame 1054 facing the tab welding nozzle 1065. When the laser light emitted by the infrared sensor passes through the side wall of the tab welding nozzle 1065, it prompts the initial movement into position. After the laser light emitted by the infrared sensor passes through the hollow structure of the tab welding nozzle 1065, the parameter position of the laser welding component 1055 can be stably aligned with the tab welding nozzle 1065. The welding laser light emitted by the laser welding component 1055 then passes through the tab welding nozzle 1065 to weld the tab. After parameter calibration, control adjustments can also be made using a CNC system. The specific equipment model and operating principle used to align the laser welding component 1055 with the tab welding nozzle 1065 should be understood as existing technology. During the welding process, the pipe connected to the tab welding nozzle 1065 will spray shielding gas and absorb harmful gases after welding, thereby ensuring the quality of the tab welding. In addition, the provision of the auxiliary rack 1053 enables the two sets of tab welding nozzles 1065 to perform welding operations in turn, further improving the efficiency of tab welding. One of the two tab welding nozzles 1065 is connected to the welding guide frame 1061 via an adjustment assembly 1064, and the other is fixedly mounted on the welding guide frame 1061, thereby facilitating the operator to adjust the distance between the two tab welding nozzles 1065 to accommodate the use of tab bending surfaces of different sizes. The adjustment assembly 1064 includes an auxiliary motor mounted on the welding guide frame 1061, which drives the adjustment screw mounted on the welding guide frame 1061 to rotate. The auxiliary motor is a stepper motor that can rotate forward and reverse. When the auxiliary motor rotates forward and reverse, the adjustment screw can cooperate with the threaded block connected to the tab welding nozzle 1065 to drive the tab welding nozzle 1065, which is slidably engaged with the welding guide frame 1061, to move, thereby adjusting the distance between the two tab welding nozzles 1065.

[0040] like Figure 2As shown, a fire prevention component 104 is provided on the fixing frame 101 at a position corresponding to the laser welding part 1055. The fire prevention component 104 includes a monitoring component 1043 provided on the auxiliary fixing frame 1024 and a guide frame 1041 provided on the transmission frame 1039 facing the laser welding part 1055. The monitoring component 1043 is an image monitoring device, and can also be a smoke alarm device. When a fire occurs in the soft-pack battery pack during the welding process, the monitoring component 1043 will send a signal to control the conveying chain 1032 to rotate in the opposite direction, thereby conveying the burning soft-pack battery pack to the guide frame 1041. Subsequently, the guide frame 1041 guides the soft-pack battery pack into the fire extinguishing box 1042, and the water or flame retardant foam provided in the fire extinguishing box 1042 will extinguish the fire of the soft-pack battery pack. It is particularly noteworthy that multiple ball bearings can be provided on the inclined surface of the guide frame 1041 to reduce the friction between the soft-pack battery pack and the inclined surface of the guide frame 1041, thereby increasing the speed at which the soft-pack battery pack is sent into the fire extinguishing box 1042 after passing through the guide frame 1041, that is, shortening the time that the soft-pack battery pack poses a threat to the equipment in the outside world.

[0041] like Figure 5 and Figure 6 As shown, the measuring assembly 2 includes a frame 201 carrying a transport member 4, and a first detection mechanism 202 and a second detection mechanism are sequentially arranged along the transmission direction of the soft-pack battery pack. In this embodiment, a first detection station and a second detection station are sequentially arranged along the transmission direction of the transport member 4; the first detection mechanism 202 is used for post-weld detection of the tabs of the soft-pack battery pack, and the second detection mechanism is used for pressure difference detection and DCIR detection of the soft-pack battery pack. Figure 5 As shown, the processed soft-pack battery pack enters the measuring assembly 2 from front to back, and is driven by the transport component 4 to pass through the first inspection station and the second inspection station in sequence, so that the first inspection mechanism 202 performs post-weld inspection of the tab and the second inspection mechanism performs differential pressure inspection and DCIR inspection, thereby improving the consistency and reliability of the soft-pack battery pack product.

[0042] In this embodiment, during the processing of the soft-pack battery pack, multiple battery packs need to be placed together in order and reliably supported by the first clamping tray 11, and then the tabs are welded. At the same time, the tabs of the battery packs are connected to the busbar so that the multiple battery packs form two electrodes of the soft-pack battery pack, namely the positive electrode and the negative electrode. The first detection mechanism 202 includes two cameras 2021 symmetrically arranged on the frame 201 and used to capture images of the tabs of the soft-pack battery pack, and transmit the captured images to the control unit, which recognizes the received images, and forms a collection area between the two cameras 2021. Figure 5 and Figure 6As shown, a first support frame 2023 is fixedly connected to the frame 201. The first support frame 2023 includes two vertical support rods and a horizontal support rod located on both sides of the first detection station. The ends of the horizontal support rod are connected to the ends of the two vertical support rods by bolts. A first mounting plate 2022 for mounting a camera 2021 is provided on the first support frame 2023. A first slide rail is fixedly connected to the first support frame 2023. A first slider is fixed to the first mounting plate 2022. The first slider slides along the first slide rail and can be fixed. The extension direction of the first slide rail is parallel to the sliding direction of the soft-pack battery pack. In this embodiment, the connection method between the first slide rail and the first support frame 2023 and the connection method between the first slider and the first mounting plate 2022 are both bolted connections. The setting of the first slide rail and the first slider can adjust the position of the camera 2021 to adapt to different soft-pack battery packs, thereby improving the scope of application of the present invention.

[0043] Mounting brackets are provided at both ends of the first mounting plate 2022. The mounting brackets can slide in a direction perpendicular to the sliding direction of the soft-pack battery pack and can be fixed. The connection between the mounting bracket and the first mounting plate 2022 is a bolt connection; the camera 2021 is fixedly set on the mounting bracket, and the connection between the camera 2021 and the mounting bracket is a bolt connection to adapt to soft-pack battery packs of different sizes, thereby improving the scope of application of the present invention.

[0044] During the actual inspection process, due to the influence of the lighting in the workshop and the environment, the image captured by camera 2021 deviates from the actual image. Therefore, a shadowless plate 203 is installed on the side of camera 2021 close to another camera 2021. The top of shadowless plate 203 is fixedly connected to the first mounting plate 2022. Accordingly, the first mounting plate 2022 is provided with multiple fixing holes distributed along its length. Shadowless plate 203 is connected to the fixing holes by bolts. The fixing holes at different positions correspond to the required position of shadowless plate 203 to achieve the function of adjusting the position of shadowless plate 203, while also improving the quality of the lug image captured by camera 221. Shadowless plate 203 is provided with a glass area for camera 2021 to capture the lug image. Specifically, shadowless plate 203 is provided with a square hole, and a glass piece is fixed in the square hole to form a glass area. On the side of shadowless plate 203 facing away from camera 221, a light source distributed around the glass area is provided to improve the quality of the lug image captured by camera 2021.

[0045] In this embodiment, a fifth cylinder is provided below the collection area for lifting the soft-pack battery pack and bringing it into the collection area. A third mounting plate is fixedly connected to the lower surface of the guide rail, which is bolted to the guide rail. The fifth cylinder is fixed to the third mounting plate. A first lifting plate is provided above and parallel to the third mounting plate. A plurality of first sleeves are fixedly connected to the third mounting plate. In this embodiment, the number of first sleeves is 1, and they are evenly distributed on the third mounting plate. A plurality of first guide rods corresponding to the first sleeves are fixedly provided on the first lifting plate. The top ends of the guide rods are fixedly connected to the first lifting plate, and the bottom ends of the guide rods pass through the first sleeves and extend below the third mounting plate. When the base plate enters the first inspection station, the piston of the fifth cylinder pushes the first lifting plate upward, which in turn pushes the base plate upward, allowing the soft-pack battery pack to enter the collection area. The camera 2021 captures images of the tabs on both sides of the soft-pack battery pack and transmits them to the control unit for identification and detection.

[0046] In this embodiment, the end portion of the first guide rod extending below the third mounting plate is fixedly connected to the first limit plate to limit the ultimate displacement of the battery pack in the vertical direction.

[0047] The second detection mechanism includes a pressure differential detection member 205 for performing pressure differential detection on the soft-pack battery pack and a DCIR detection member 206 for performing DCIR detection on the soft-pack battery pack. A second support frame 204 is fixedly connected to the rack 201. The pressure differential detection member 205 and the DCIR detection member 206 are both arranged on the second support frame 204. It should be noted that the present invention performs DCIR detection and pressure differential detection on the soft-pack battery pack at the same time. The pressure differential detection member 205 and the DCIR detection member 206 are both existing commercially available products and will not be described in detail here.

[0048] The pressure differential detection element 205 includes two groups of oppositely positioned pressure differential detection units. The pressure differential detection units include multiple detection rods 2051 corresponding to the tabs on one side of the soft-pack battery pack. One end of the detection rod 2051 can contact the corresponding tab, and the other end of the detection rod 2051 is electrically connected to the corresponding pressure differential detection device. When the end of the detection rod 2051 contacts the corresponding tab, the pressure differential detection device detects the voltage of each battery pack. The detection rods 2051 of each pressure differential detection unit are divided into two groups, upper and lower. The detection rods 2051 in each group are spaced apart along the extension direction of the guide rail to ensure that each tab is contacted by a detection rod 2051. The pressure differential detection unit also includes a first slide 2053 slidably set on the second support frame 204, and the first slide 2053 is driven by the first cylinder 2052, and the detection rod 2051 of the pressure differential detection unit is fixedly installed on the first slide 2053; specifically, the first slide 2053 of the right pressure differential detection unit is fixed on the upper and middle position of the second support frame 204, and the first cylinder 2052 of the pressure differential detection unit is installed on the first fixed plate by bolts, and the first slide 2053 is fixedly connected to the protruding end of the piston of the first cylinder 2052, that is, the first slide 2053 is a vertical plate, and the bottom of the first slide 2053 is fixedly connected to a serial plate, and a plurality of connecting rods distributed along the extension direction of the guide rail are fixedly connected to the serial plate, and the detection rod 2051 is fixed on the connecting rod, and one connecting rod has two detection rods 2051. When the right side pressure difference detection unit contacts the right side pole ear of the soft-pack battery pack, the first cylinder 2052 drives the first slide 2053 to slide toward the soft-pack battery pack, thereby driving the detection rod 2051 to slide toward the soft-pack battery pack until the detection rod 2051 contacts the corresponding pole ear, and the pressure difference detection equipment measures the voltage of each battery pack; after the detection is completed, the first cylinder 2052 drives the first slide 2053 to slide away from the soft-pack battery pack, thereby driving the detection rod 2051 to separate from the corresponding pole ear, and the soft-pack battery pack after detection enters the next processing step.

[0049] The specific structure of the left-side pressure differential detection unit is that the first fixed plate of the left-side pressure differential detection unit is fixed to the top of the second support frame 204, and a sliding seat connected to the drive of the first cylinder 2052 is slidably provided on the first fixed plate. The first slide 2053 is slidably connected to the slide and is driven by the sixth cylinder to move the first slide 2053 up and down. The bottom of the first slide 2053 is fixedly connected to another serial plate, and the other serial plate is fixedly connected to multiple connecting rods distributed along the extension direction of the guide rail. The detection rod 2051 is fixed on the connecting rod, and there are two detection rods 2051 on one connecting rod. When the left pressure difference detection unit contacts the left pole ear of the soft-pack battery pack, the sixth cylinder drives the second slide plate to slide downward to the desired position. At the same time, the first cylinder 2052 drives the slide to slide toward the soft-pack battery pack, thereby driving the second slide plate to slide toward the soft-pack battery pack until the detection rod 2051 contacts the corresponding pole ear on the left side of the soft-pack battery pack. When the detection rods 2051 on both sides contact the corresponding pole ears on both sides of the soft-pack battery pack, detection is performed. After the detection is completed, the first cylinder 2052 drives the slide to slide away from the soft-pack battery pack, so that the detection rod 2051 is separated from the corresponding pole ear.

[0050] The DCIR detection component 206 includes two groups of DCIR detection components 206 corresponding to the two electrodes of the soft-pack battery pack, namely the positive electrode and the negative electrode. The DCIR detection component 206 includes a detection head for connecting to the positive or negative electrode of the soft-pack battery pack. The two detection heads are electrically connected to the DCIR detection equipment. After the detection heads contact the corresponding electrodes, the DCIR detection equipment performs DCIR detection on the soft-pack battery pack. The DCIR detection component 206 also includes a second fixed plate 2061 for mounting the detection heads. The second fixed plate 2061 is driven by a second cylinder 2064 to move up and down, and the detection heads can connect to or disconnect from the positive or negative electrode of the soft-pack battery pack when moving up and down with the second fixed plate 2061. A third fixed plate is fixedly connected parallel to the bottom of the second fixed plate 2061. The detection head is fixed to the third fixed plate, and the top of the detection head is located between the third fixed plate and the second fixed plate 2061 for electrical connection to the transmission line. The bottom end of the detection head passes through the second fixed plate 2061 and is located below it for contacting the electrodes of the soft-pack battery pack.

[0051] In order to prevent the detection head from crushing the electrodes of the soft-pack battery pack, an auxiliary connecting plate 2062 fixedly connected to the piston of the second cylinder 2064 is provided above the second fixed plate 2061, and several measuring springs 2063 are provided between the auxiliary connecting plate 2062 and the second fixed plate 2061. One end of the measuring spring 2063 is fixedly connected to the auxiliary connecting plate 2062, and the other end of the measuring spring 2063 is connected to the second fixed plate 2061. Specifically, two ends of the second fixed plate 2061 are fixedly connected to two sliding rods 6013 perpendicular to it, and a sliding hole is opened on the auxiliary connecting plate 2062. The top end of the sliding rod 6013 extends into the sliding hole and the sliding rod 6013 can slide along the sliding hole. The measuring spring 2063 is sleeved on the position of the sliding rod 6013 between the second fixed plate 2061 and the auxiliary connecting plate 2062. After the soft-pack battery pack is in the detection position, the second cylinder 2064 drives the auxiliary connecting plate 2062 to move downward, thereby driving the second fixed plate 2061 and the detection head to move downward; when the bottom end of the detection head contacts the electrode of the soft-pack battery pack, the second cylinder 2064 continues to move downward. At this time, the measuring spring 2063 is compressed, and the restoring elastic force of the measuring spring 2063 will push the detection head to close contact with the electrode of the soft-pack battery pack, thereby improving the detection accuracy and at the same time avoiding the detection head from moving out of position and being unable to detect, and moving too much to damage the electrode.

[0052] In this embodiment, a support plate is fixedly connected to the first slide 2053. When the first slide 2053 moves to the detection rod 2051 and contacts the corresponding pole ear, the support plate is located below the electrode of the soft-pack battery pack and contacts the lower surface of the electrode, thereby supporting the electrode and preventing the detection head from applying excessive pressure to the electrode, thereby preventing damage to the electrode, thereby protecting the electrode.

[0053] A third cylinder mounted on the frame 201 is provided between the two DCIR detection components 206. A top plate is provided above the third cylinder. In this embodiment, a fourth mounting plate is fixedly connected below the guide rail of the frame 201, and the third cylinder is fixedly mounted on the fourth mounting plate. The top plate is located above the fourth mounting plate and is perpendicular to the piston axis of the third cylinder. A second sleeve is fixedly connected to the fourth mounting plate. A second guide rod is slidably provided within the second sleeve. The top end of the second guide rod extends through the second sleeve and is fixedly connected to the top plate. The third cylinder pushes the top plate upward, thereby driving the soft-pack battery pack located above it upward. In this embodiment, the bottom end of the second guide rod extends through the second sleeve and is fixedly connected to a third limit plate, which is used to limit the ultimate displacement of the soft-pack battery pack. When the soft-pack battery pack moves to the second inspection station, the third cylinder pushes the top plate up, thereby driving the soft-pack battery pack to rise to the inspection position. The pressure difference detection component 205 and the DCIR detection component 206 detect the soft-pack battery pack. After the inspection is completed, the third cylinder piston retracts, and the soft-pack battery pack descends to the initial position and is transferred to the next processing station for processing through the transport component 4.

[0054] During the pressure difference detection and DCIR detection process of the soft-pack battery pack, sparks are easily generated at the contact point between the detection rod 2051 and the tab. Therefore, several fourth cylinders are provided on the top plate to push the soft-pack battery pack away from the top plate. Several rollers are rotatably provided on the top plate, and the axes of the rollers are parallel to the extension direction of the guide rail. In this embodiment, there are two fourth cylinders. A water tank is provided on one side of the rack 201, and a second cylinder 2064 is provided on the other side of the rack 201 for pushing the soft-pack battery pack away from the top plate into the water tank. When sparks appear in the soft-pack battery pack, the second cylinder 2064 drives the detection head to move upward, so that the first cylinder 2052 located on the left side of the soft-pack battery pack drives the first slide 2053 to make way for the soft-pack battery pack. At the same time, the sixth cylinder drives the second slide to move upward to avoid the soft-pack battery pack so that it can enter the water tank smoothly; then, the fourth cylinder lifts the soft-pack battery pack, and the first cylinder 2052 located on the right side of the soft-pack battery pack pushes the soft-pack battery pack into the water tank, thereby improving the safety of the detection equipment.

[0055] In the present invention, a positioning scanner is provided in front of the first inspection station, and a scanning code is provided on the bottom plate for positioning the soft-pack battery pack on the guide rail. At the same time, a positioning assembly 207 distributed along its extension direction is provided on the guide rail, and the positioning assembly 207 includes a positioning cylinder fixedly mounted on the guide rail, a fixed seat is fixedly connected below the guide rail, the positioning cylinder is fixedly mounted on the fixed seat, and the top of the positioning cylinder piston is fixedly connected to the base, and a first swing wheel 2071 and a second swing wheel 2073 are rotatably provided on the base, and a vertical plate 2072 is provided on the first swing wheel 2071, and the vertical plate 2072 is fixedly connected to the outer wall of the first swing wheel 2071, and a horizontal plate 2074 is provided on the second swing wheel 2073, and the horizontal plate 2074 is fixedly connected to the outer wall of the second swing wheel 2073, and a receiving groove for accommodating the vertical plate 2072 is provided on the bottom plate. During the transfer of the soft-pack battery pack, the positioning assembly 207 is located below the base plate to ensure smooth passage of the soft-pack battery pack. When the positioning scanner scans the base plate and enters the first inspection station, the transport unit 4 pauses and the positioning cylinder pushes the base upward. The vertical plate 2072 enters the receiving slot and the horizontal plate 2074 contacts the lower surface of the base plate. At this time, the third and fifth pneumatic cylinders lift the corresponding soft-pack battery pack into the inspection position. In the present invention, if the base plate is misaligned due to inertia, the vertical plate 2072 will deflect and enter the receiving slot during the base's ascent. As the vertical plate 2072 enters the receiving slot, the first swing wheel 2071 pushes the base plate to correct its position, thereby ensuring the accuracy of the inspection.

[0056] like Figure 1 As shown, in order to improve the quality of tab welding, a sampling station 3 corresponding to the transmission component is provided between the upper shell component 5 and the measuring component 2 to perform sampling inspection or add components to the battery pack after the tabs are welded.

[0057] like Figure 7 As shown, the upper shell assembly 5 includes an upper shell base 501 for carrying the transport member 4. The upper shell base 501 is provided with a first opening and closing assembly 502 and a second opening and closing assembly 505. The first opening and closing assembly 502 and the second opening and closing assembly 505 are used to open the first clamping tray 11 and the second clamping tray 12, respectively. The first clamping tray 11 and the second clamping tray 12 are hard clamping structures and elastic clamping structures, respectively. A recycling station 504 is provided at the upper shell base 501 corresponding to the first opening and closing assembly 502, so that the operator can collect and reuse the unused first clamping tray 11. A loading part 506 is provided at the upper shell base 501 corresponding to the second opening and closing assembly 505 to place the bottom of the shell into the second clamping tray 12, and a tray changing part 503 is provided to grab the battery pack that has been welded with the tabs in the first clamping tray 11 and place it in the second clamping tray 12. The tray changing member 503 includes a tray changing rack 5032 mounted on the upper housing base 501. It cooperates with the corresponding first clamping claws 5031 to grasp the stacked and tab-welded battery packs and transport them to the second clamping tray 12, located at the bottom of the transport member 4 corresponding to the second opening and closing assembly 505, which is equipped with the bottom of the housing. Subsequently, another loading member 506 places the top of the housing onto the top of the stacked battery packs, docking them with the bottom of the housing. This completes the battery pack housing loading operation.

[0058] like Figure 8 As shown, the tray exchange rack 5032 includes a main rack 50321 fixed on the upper shell base 501 and arranged along the transmission direction of the transport member 4. The main rack 50321 drives an auxiliary rack 50322 perpendicular to it, and the auxiliary rack 50322 can drive the vertical rack 50323 to drive the first clamping claw 5031 to move stably to transport the stacked battery pack from the section of the transport member 4 that transports the first clamping tray 11 to the section that transports the second clamping tray 12. Figure 9As shown, the loading part 506 includes a loading seat 5061 corresponding to the upper shell base 501, and three rack seats 5062 are evenly arranged on the loading seat 5061, and each of the three rack seats 5062 is provided with a loading rack 5063, and the three loading racks 5063 respectively drive the claw shell cylinder 5064, the gluing head 5066 and the shell taking cylinder 5068, and the loading rack 5063 between the gluing head 5066 and the shell taking cylinder 5068 is provided with a confirmation head 5067 for detecting the gluing quality of the gluing head 5066, and the confirmation head 5067 can take images and send them to the control unit for processing to determine whether the gluing is qualified. The shell claw cylinder 5064 can drive the corresponding loading rack 5063 to correspond to the shell storage rack 5065 provided on the upper shell base 501. Specifically, the shell storage rack 5065 is composed of limiting bars provided at the four corners of the shell bottom. It is used to pick up the shell bottom placed in the upper shell rack and place it on the carrier. The grabbed shell is then transferred to the glue coating head 5066, which then coats the shell bottom with glue under the drive of the corresponding loading rack 5063. The carrier finally transfers the glued shell bottom to the shell picking cylinder 5068, which places the shell bottom into the opened second clamping tray 12. The glue then ensures that the stacked battery pack transferred by the first clamping claw 5031 is stably connected to the shell bottom. The carrier is a rotating belt mounted on the upper shell base 501. The belt's surface is provided with recesses for positioning the bottom of the shell. The belt is driven by a motor mounted on the upper shell base 501 to move the bottom of the shell to a corresponding position. The loading carriage 5063 comprises a first upper shell carriage 50631 mounted on a carriage seat 5062 and arranged along the carrier's transport direction. This first upper shell carriage 50631 drives a second upper shell carriage 50632 perpendicular thereto. This second upper shell carriage 50632 drives a connected third upper shell carriage 50633, achieving displacement in three directions for multi-degree-of-freedom machining operations.

[0059] After the outer shell is placed over the stacked battery packs, the connection between the outer shell and the battery packs relies solely on glue, which cannot protect the stacked battery packs. Therefore, the outer shell's butt edges must be welded to ensure that the outer shell envelops all battery packs and forms a solid protective barrier. A first welding assembly 6, a flipping assembly 7, and a second welding assembly 8 are sequentially arranged along the direction in which the soft-pack battery packs are transported by the transport member 4.

[0060] The first welding assembly 6 is used to weld the connection between the top side plate and the top plate of the shell and the connection between the side plate and the bending part, that is, to weld the three short sides of the top of the shell, such as Figure 10As shown, the first welding assembly 6 includes two oppositely arranged first lasers 6010 and two welding robot arms for driving the corresponding first lasers 6010 to move. The two welding robot arms are located on both sides of the first welding bed 601, and one welding robot arm is connected to one first laser 6010. It should be noted that the welding robot arms are existing commercially available products, not shown in the figure. The models of the welding robot arms are FANUC M-iD, FANUC M-iD / , etc.; only one first laser 6010 is shown in the figure. In this embodiment, the first laser 6010 and the welding robot arm are fixedly connected through the first mounting base 606. The first mounting base 606 is fixedly connected to a flange 6012 for connecting to the welding robot arm. The first laser machine is fixedly mounted on the first mounting base 606. In this embodiment, the first mounting base 606 is fixedly provided with a positioning image machine 607 for photographing the soft-pack battery pack. When the soft-pack battery pack moves to the work station of the first welding assembly 6, the positioning image machine 607 captures the image of the soft-pack battery pack and determines the initial welding position and the stroke of the first laser 6010 through image recognition.

[0061] The first welding assembly 6 includes a first welding bed 601 that carries the transport part 4 and transmits the second clamping pallet 12. Two oppositely arranged welding racks 602 are provided on the first welding bed 601. The two welding racks 602 are provided on both sides of the transport part 4. The welding rack 602 is provided with a seventh cylinder 603. The seventh cylinder 603 is used to drive the sliding first sliding seat 604 provided on the welding rack 602. The first sliding seat 604 is provided with side welding nozzles 605 along the transmission direction of the transport part 4, and a top welding nozzle 6014 is provided on the top of the first sliding seat 604.

[0062] Specifically, two first parallel slide rails are fixedly connected to the top of the welding frame 602, and two first sliders that can slide along the first slide rails are fixedly connected to the first sliding seat 604. The first sliders correspond to the first slide rails one by one. Specifically, the two side welding nozzles 605 and the top welding nozzle 6014 provided on the first sliding seat 604 are driven by the eighth cylinder 608 to move for welding the connection between the side panel of the shell and the bending part. The two side welding nozzles 605 and the top welding nozzle 6014 are both connected to the first exhaust pipe for exhaust provided on the welding frame 602.

[0063] During the welding process of the soft-pack battery pack shell, in order to reduce the gap at the connection between the shell side panel and the top plate and the bent part, a fixed pressure plate 609 that can contact the shell side panel is slidably provided on the machine tool. During welding, the fixed pressure plate 609 presses the side panel onto the battery pack to facilitate welding at the connection. A protective pad is fixedly connected to the side of the fixed pressure plate 609 that contacts the shell side panel to protect the shell side panel. The fixed pressure plate 609 is vertically fixedly connected to the side of the side plate with a sliding rod 6013, and the sliding rod 6013 is slidably connected to the machine tool. The connection method between the two is the existing technology and will not be repeated here; a push plate 6011 is fixedly connected to the first sliding seat 604, and there are two push plates 6011. The connection method between the push plate 6011 and the first sliding seat 604 is a bolt connection. During the sliding process of the first sliding seat 604, it can push the fixed pressure plate 609 to contact the side plate. When the first welding assembly 6 welds the soft-pack battery pack, the first sliding seat 604 slides toward the direction of the soft-pack battery pack, and the push plate 6011 contacts the surface of the fixed pressure plate 609 away from the soft-pack battery pack. As the first sliding seat 604 continues to slide, the push plate 6011 pushes the fixed pressure plate 609 toward the soft-pack battery pack until the push plate 6011 presses the fixed pressure plate 609 against the side plate of the shell.

[0064] The welding process of the first welding assembly 6 is as follows: the transport part 4 transfers the soft-pack battery pack to the position of the first welding assembly 6 and then pauses. The seventh cylinder 603 drives the first sliding seat 604 to slide toward the soft-pack battery pack. At this time, the push plate 6011 pushes the fixed pressure plate 609 to slide toward the soft-pack battery pack, and then the fixed pressure plate 609 presses the side plate of the shell to the end of the battery pack; then the eighth cylinder 608 pushes the corresponding side welding nozzle 605 and the top welding nozzle 6014 to move toward the soft-pack battery pack. Next, the welding robot arm will drive the first mounting seat 606 to move, and during the displacement process, the positioning image machine 607 collects the image of the soft-pack battery pack and transmits it to the control unit. The control unit recognizes the image and confirms the initial position of the welding, and controls the welding robot arm to drive the first laser 6010 to weld the three short sides in sequence; after the welding is completed, the seventh cylinder 603 drives the top welding nozzle 6014 and the side welding nozzle 605 to reset, and the transport part 4 will drive the soft-pack battery pack into the flip assembly 7.

[0065] like Figure 11 and Figure 12As shown, the flip assembly 7 includes a flip seat 701 that supports the transport member 4. The flip seat 701 is provided with two flip clamps 707 that are arranged opposite to each other and can be opened and closed, and a flip motor 706 for driving the flip clamps 707 to rotate. A clamping area for clamping the soft-pack battery pack is formed between the two flip clamps 707. The flip motor 706 corresponds one-to-one with the flip clamps 707. Specifically, the flip assembly 7 also includes a flip frame 702 fixedly connected to the flip seat 701. The flip frame 702 includes two parallel vertical rods and a horizontal rod. The two vertical rods are located on both sides of the transport member 4 and their bottom ends are fixedly connected to the flip seat 701. The vertical rods are connected to the flip seat 701 by bolts. The horizontal rod is fixedly connected to the top ends of the two vertical rods, and the two are connected by bolts. The flip frame 702 is provided with a flip slide 705. This flip slide 705 is a rectangular plate-shaped structure and is arranged horizontally. The flip slide 705 is driven to slide up and down along the flip frame 702 by a ninth cylinder 704. The piston of the ninth cylinder 704 is fixedly connected to the flip slide 705. Specifically, a first connecting plate is fixedly connected to the flip frame 702. The first connecting plate is connected to the horizontal rod by bolts. The ninth cylinder 704 is fixedly mounted on the first connecting plate. Two second slide rails are fixedly mounted on the first connecting plate. The second slide rails are arranged vertically. A second connecting plate is fixedly connected to the flip slide 705 on the side closest to the flip frame 702. The second connecting plate is fixedly mounted with two second sliders, which correspond one to one with the second slide rails and can slide along the second slide rails.

[0066] The flip slide 705 is slidably connected to the second mounting plates 703 located below it at both ends. The second mounting plates 703 can slide horizontally in a direction perpendicular to the conveying direction of the soft-pack battery pack. The flip clamps 707 are rotatably arranged on the corresponding second mounting plates 703, that is, there are two second mounting plates 703 and they correspond one to one with the flip clamps 707. A top pressure cylinder is provided between the two second mounting plates 703 to drive the two to move relative to or away from each other. The top pressure cylinder is fixedly installed at the center of the flip slide 705. In this embodiment, taking one of the second mounting plates 703 as an example, the second mounting plate 703 includes a horizontally arranged first part and a vertically arranged second part. The first part and the second part are fixedly connected by bolts. The first part is used to connect to the flip slide 705, and the second part is used to connect to the flip clamps 707. In order to improve the stability of the second mounting plate 703, a reinforcing plate is fixedly provided between the first part and the second part. The first part and the flip slide 705 are configured as follows: the first part is fixedly connected to a third slider; the lower surface of the flip slide 705 is fixedly connected to a third slide rail corresponding to the third slider; the piston end of the second cylinder 2064 is fixedly connected to the first part and can drive the third slider to slide back and forth along the third slide rail. The second part and the flip clamp 707 are configured as follows: first, the flip clamp 707 includes a circular plate and a plurality of clamping blocks arranged on the circular plate. In this embodiment, the number of clamping blocks is 1 and is evenly distributed along the circumference of the circular plate. The clamping blocks are connected to the circular plate by bolts, and the circular plate is rotatably connected to the second part via a rotating shaft. The second part is provided with a flip motor 706 for driving the flip clamp 707 to rotate. The driving shaft of the flip motor 706 is fixedly connected to a driving pulley, and the rotating shaft is coaxially fixedly connected to a driven pulley. The driving pulley and the driven pulley are driven by a belt.

[0067] In this embodiment, in order to limit the extreme displacement of the horizontal sliding of the second mounting plate 703, the first part is fixedly connected to a second limiting plate, and a limiting hole corresponding to the second limiting plate is opened on the flip slide 705. The top of the second limiting plate extends through the limiting hole to above the flip slide 705, and a second limiting plate fixedly connected to the flip slide 705 is provided at the opening of the limiting hole. The second limiting plate and the flip slide 705 are connected by bolts.

[0068] The second clamping tray 12 includes a second clamping base plate with rollers at the four corners, and a fixed clamping plate and a movable clamping plate are relatively provided on the second clamping base plate. The bottom of the movable clamping plate slides with the second clamping base plate, and a clamping push block connected to the second clamping base plate is provided on the side of the movable clamping plate away from the fixed clamping plate. A clamping measuring spring 2063 is provided between the clamping push block and the movable clamping plate to drive the movable clamping plate to approach the fixed clamping plate to clamp and position the stacked battery pack.

[0069] The second opening and closing assembly 505 provided on the flip seat 701 includes a hook plate that can open the second clamping tray 12. Specifically, a second opening and closing frame is fixedly connected to the flip seat 701, and an opening and closing movable plate 5051 is slidably provided on the second opening and closing frame. The opening and closing movable plate 5051 is driven by an opening and closing cylinder 5053 installed on the second opening and closing frame. There are two opening and closing cylinders 5053 and they are located on both sides of the transport part 4. The pistons of the opening and closing cylinders 5053 are fixedly connected to the corresponding ends of the opening and closing movable plate 5051. A pulling cylinder 5052 is fixedly provided on the opening and closing movable plate 5051, and the end of the piston of the pulling cylinder 5052 is fixedly connected to the hook plate. When the opening and closing movable plate 5051 moves downward, it can drive the hook plate to move downward, so that the hook plate is inserted into the groove opened on the movable splint. Then the pulling cylinder 5052 will pull the hook plate to drive the movable splint to move in the direction away from the soft-pack battery pack, and then pull the movable splint to overcome the elastic force of the clamping measuring spring 2063 and slide in the direction away from the fixed splint, thereby releasing the clamping of the soft-pack battery pack by the second clamping tray 12.

[0070] The working process of the flip assembly 7 is as follows: the soft-pack battery pack welded by the first welding assembly 6 is transferred to the flip assembly 7 position, the ninth cylinder 704 drives the flip slide 705 to move downward, and then drives the second mounting plate 703 and the flip clamp 707 to move downward to the required position, the auxiliary clamping cylinder drives the two second mounting plates 703 to move relative to each other, and then drives the two flip clamps 707 to move relative to each other, and the four clamping blocks on each flip clamp 707 are respectively located at the four surfaces of the soft-pack battery pack shell until the soft-pack battery pack is fixed between the two flip clamps 707; the opening and closing cylinder 5053 pushes the opening and closing movable plate 5051 to move the pulling cylinder 5052 downward, and then drives the hook plate to move downward so that the hook plate enters the hook groove, and then the pulling cylinder 5052 pulls the hook plate to make the second clamping tray 12 slide away from the fixed clamping plate, thereby releasing the clamping of the soft-pack battery pack; the ninth cylinder 70 4 drives the flip slide 705 to move upward, thereby driving the flip clamping claw 707 and the soft-pack battery pack fixed between the two flip clamping claws 707 to move upward, so that they move out of the clamping space. After moving to the required position, they are locked. The flip motor 706 drives the flip clamping claw 707 to rotate, so that the bottom plate of the soft-pack battery pack is located at the top and the top plate is located at the bottom; the ninth cylinder 704 drives the flip slide 705 to move downward, driving the flipped soft-pack battery pack into the clamping space; the fourth cylinder drives the hook plate to move toward the fixed clamping plate, so that the second clamping tray 12 clamps the soft-pack battery pack, and then the third cylinder drives the fourth mounting plate to move upward, so that the pull plate slides out of the hook groove; the auxiliary clamping cylinder drives the two second mounting plates 703 to move away from each other, so that the flip clamping claw 707 is separated from the soft-pack battery pack, and then the ninth cylinder 704 drives the soft-pack battery pack above the soft-pack battery pack to complete the flipping of the soft-pack battery pack.

[0071] like Figure 13As shown, the second welding assembly 8 is used to weld the connection between the base plate and the two long sides of the bend, as well as the connection between the base plate and the side panels of the housing. The second welding assembly 8 includes two oppositely positioned second lasers and two welding manipulators (not shown in the figure) for driving the corresponding second lasers. The two welding manipulators are located on either side of the machine tool, one welding manipulator being connected to each second laser. It should be noted that the welding manipulators are existing commercially available products (not shown in the figure), and the welding manipulators are models such as FANUC M-iD or FANUC M-iD / . In this embodiment, the second laser and the welding manipulator are fixedly connected via a second mounting base. The second mounting base is fixedly connected to a corresponding flange 6012 for connecting to the welding manipulator. The second laser is fixedly mounted on the second mounting base. A positioning imager 607 for capturing images of the soft-pack battery pack is fixedly mounted on the second mounting base. When the soft-pack battery pack moves to the workstation of the second welding assembly 8, the positioning imager 607 captures an image of the soft-pack battery pack and determines the initial welding position and the travel of the second laser through image recognition.

[0072] The second welding assembly 8 includes a second welding bed 801 that carries the transport member 4. The second welding bed 801 is equipped with two long-side welding frames 802. Each of the long-side welding frames 802 is topped with a distance-adjusting cylinder 803. The distance-adjusting cylinder 803 can drive a displacement bracket 807 that slides on the long-side welding frame 802. The displacement bracket 807 is equipped with two angle plates 804 on the side facing the transport member 4. Both angle plates 804 are rotatably provided with a docking cylinder 806. Both docking cylinders 806 are topped with a long-side welding nozzle 805 to assist the second laser and the corresponding welding robot in welding the long side of the shell bottom. The docking cylinder 806 can adjust the angle on the two angle plates 804 to accommodate different sizes of shell bottoms and perform welding operations on the shell bottom.

[0073] The second welding bed 801 is provided with a structure identical to the welding frame 602 provided on the first welding bed 601, that is, when the long side welding nozzle 805 corresponds to the long side of the bottom of the shell, the top side welding nozzle 6014 of the same design as that on the second welding bed 801 and the first welding bed 601 will correspond to the short side of the bottom of the shell, and at the same time will press the shell to ensure the relative position during the shell welding process.

[0074] The second welding assembly 8 welds the soft-pack battery pack shell as follows: when the transport unit 4 transfers the soft-pack battery pack to the corresponding welding rack 602 position, the corresponding top edge welding nozzle 6014 will cooperate with the corresponding constant pressure plate 609 to correspond to the short side position of the shell bottom. At the same time, the distance adjustment cylinder 803 will push the displacement bracket 807 to move under the support of the long side welding rack 802. Then, the displacement bracket 807 will drive the two docking cylinders 806 of the corresponding angle to the corresponding position through the angle plate 804, that is, the long side welding nozzle 805 corresponds to the long side of the shell bottom. Next, the positioning image machine 607 captures the image of the soft-pack battery pack and transmits it to the control unit. The control unit recognizes the image and confirms the initial welding position, and controls the welding robot arm to drive the second laser to weld in sequence. After welding is completed, the long side welding nozzle 805 and the short side welding nozzle will be reset. Then, the transport unit 4 will drive the soft-pack battery pack into the inspection assembly 9 for shell welding quality inspection.

[0075] The first opening and closing component 502 includes a supporting member arranged on the transmission member and a vertical telescopic member arranged on the supporting member. The vertical telescopic member can drive the longitudinal telescopic member connected to the vertical telescopic member. The longitudinal telescopic member is provided with a driving member, and the driving member can dock with the screw included in the tray. Specifically, the driving member is docked with the rotating disk provided at the end of the screw. After debugging, the operator can automatically control the driving member to dock with the rotating disk, and drive the screw to rotate forward and reverse to open or close the clamping structure to release or clamp the battery assembly for processing the battery assembly.

[0076] The supporting member includes a gantry fixed by a base plate, and the gantry is provided with two symmetrical reinforcement beams to improve the structural stability of the gantry. The outer side of the gantry is symmetrically provided with a fourth supporting plate included in the two vertical telescopic members, and the two fourth supporting plates are fixed with telescopic cylinders. The telescopic ends of the two telescopic cylinders are arranged toward the base plate, and the telescopic ends of the two telescopic cylinders are respectively fixedly connected to the two ends of the displacement frame in the length direction to drive the displacement frame to vertically move under the support of the gantry. The gantry is provided with a slide rail that slides with the displacement frame to ensure the stability of the displacement frame. The displacement frame is fixed with a drive plate included in the longitudinal telescopic member, and a drive motor is fixed on the drive plate. A control screw is provided on the output shaft of the drive motor, and the control screw is threadedly connected to the moving plate, and the moving plate slides with the auxiliary guide rail provided on the drive plate. The moving plate is fixed with a control motor included in the driving member, and a matching disk is fixed on the output shaft of the control motor. A plurality of docking posts are evenly provided on the matching disk. The plurality of docking posts can dock with the docking holes provided on the rotating disk to drive the screw to rotate forward and reverse. A locator is fixedly provided at the docking post corresponding to the movable plate. Specifically, the locator is a laser depth sounder, which can cooperate with the electromechanical system to determine the moving position of the movable plate, so that the docking post and the docking hole can be stably docked and maintain the relative position of the docking post and the docking hole. The circular ring formed by the multiple docking posts docks with the multiple docking holes opened in a ring on the rotating disk, which makes it convenient for the operator to adjust the docking. The locator, control motor, drive motor and telescopic cylinder can all be controlled by the electromechanical system. Specifically, how the electromechanical system is set up, how it is controlled and how it is debugged and applied should be understood as existing technology, so that the operator can control it after debugging. The control motor and the drive motor are both forward and reverse stepper motors, which are convenient for the electromechanical system to control.

[0077] The first clamping tray 11 has a rectangular base plate with guide rollers at the four corners, and a raised frame, a clamping assembly and an auxiliary fixing assembly are provided on the base plate. The clamping assembly is located in the width direction of the raised frame, while the auxiliary fixing assembly is located in the length direction of the raised frame. A placement plate is fixed on the top of the raised frame, which can carry battery assemblies, including soft-pack batteries, and cooperate with the clamping assembly to clamp and position the soft-pack batteries. The clamping assembly includes a fixed clamping claw and a movable clamping claw. The fixed clamping claw is fixed to the base plate, and two adjustment slides are provided at the bottom of the movable clamping claw, which slide in sliding engagement with the auxiliary slide rail on the base plate. A control screw threadedly connected to the movable clamping claw is provided between the two adjustment slides. Protective pads are provided on the opposite surfaces of the fixed clamping claw and the movable clamping claw. The protective pads are made of elastic rubber material to protect the surface of the soft-pack batteries in the battery assembly during the process of the movable clamping claw and the fixed clamping claw clamping the battery assembly. The control screw controls the displacement of the movable clamping jaw, facilitating the spacing between the movable and fixed clamping jaws for operator control. A docking wheel is fixed to the end of the control screw that extends through the movable clamping jaw and the corresponding bearing seat. The docking wheel cooperates with the corresponding first opening and closing assembly 502 to assist the operator in mechanically adjusting the position of the movable clamping jaw. The auxiliary fixing assembly includes a positioning plate positioned on one side of the placement plate along its length, which slides vertically on the base plate. Specifically, the positioning plate is fixed with slide bars on both sides of the placement plate along its width, which slide on rail seats fixed to the base plate. The positioning plate is provided with an adjustment slot, to which multiple plug-in blocks are connected via screws, allowing the operator to adjust the position of the plug-in blocks according to different soft-pack battery processing conditions. The plug-in blocks can be inserted between the busbar and the soft-pack battery cell to determine the spacing between the busbar and the soft-pack battery cell, align the length of the soft-pack battery cell to the designed position, and ensure stable contact between the bent tabs that pass through the busbar and are bent on the busbar. The plug-in block cooperates with the stabilizing block fixed on the top surface of the positioning plate to form a clamping area to hold the manifold in place. A power slot is located at the center of the positioning plate. The slot is tilted, and a power column slides within it. Specifically, a wear-resistant wheel rotates on the outside of the power column to reduce friction as it slides within the slot, allowing it to slide easily within the slot. A pusher slide is fixedly connected to the power column, which slides on a support rail on the bottom plate and is equipped with a tightening stud. During use, the operator can drive the pusher slide to move the power column and wear-resistant wheel within the slot. The tilted slot then cooperates with the positioning plate to stabilize its vertical displacement, supported by the slide bar and rail seat. When the positioning plate moves vertically upward, the plug-in block first inserts between the manifold and the soft-pack battery cells, then guides the soft-pack battery cells and the manifold to maintain a corresponding spacing and move the soft-pack battery cells to the designed position. As the positioning plate gradually rises, the manifold will enter the clamping area to further position the manifold.After the positioning plate is moved into position, the operator rotates the tightening screws, pressing them against the base plate to stabilize the positioning plate and maintain stability during subsequent pouch cell processing. After repeatedly manipulating the two auxiliary positioning components, the two busbars and multiple pouch cells are positioned in their designed locations on the placement plate. Finally, the operator manipulates the clamping assembly to clamp and position the multiple pouch cells for subsequent battery assembly processing.

[0078] The cover plate includes a pressure plate for covering the top of multiple soft-pack battery cells. The pressure plate is provided with a snap-in hole, which can be snapped with the snap-in joints fixed on the top of the movable clamping claw and the fixed clamping claw to locate its own position. At the same time, the snap-in hole can also limit the position of the fixed clamping claw and the movable clamping claw to maintain the stability of the fixed clamping claw and the movable clamping claw in positioning multiple soft-pack battery cells. A plurality of setting blocks and a plurality of auxiliary blocks are provided on both sides of the length direction of the cover plate. A positioning area for clamping the busbar can be formed between the setting blocks and the auxiliary blocks. The positioning area can cooperate with the clamping area to further stabilize the relative position of the busbar. The auxiliary block is connected to the matching waist groove provided on the pressure plate by screws to facilitate the operator to adjust the position of the auxiliary block to adapt to the pole ear of the soft-pack battery cell.

[0079] The first opening and closing component 502 includes a docking column that can cooperate with the docking wheel included in the first clamping tray 11. The docking wheel can drive the control screw to rotate. After that, the operator can use the movable clamping claw to move the placement plate to expose enough space, and then the operator can place the corresponding number of soft-pack battery cells on the placement plate. Next, the operator can push the two auxiliary components in turn to stably position the busbar connected to the soft-pack battery cell tabs, and at the same time stably place the multiple soft-pack battery cells at the designed position of the placement plate. After the multiple soft-pack battery cells are clamped and positioned, the cover plate can be placed on the top of the multiple soft-pack battery cells, and the clamping hole can be clamped with the clamping joint provided on the top of the fixed clamping claw and the movable clamping claw to further stabilize the relative position of the fixed clamping claw and the movable clamping claw, that is, to stabilize the clamping of the multiple soft-pack battery cells.

[0080] The inspection component 9 includes an inspection base 901 that supports the transport part 4, and an inspection frame 902 is fixedly provided on the inspection base 901. The inspection frame 902 is gantry-shaped, and an inspection cylinder 905 is fixedly provided on the horizontal section of the inspection frame 902. The inspection cylinder 905 can drive the inspection carrier 906 slidingly arranged on the inspection frame 902 to move vertically, and then when the battery pack transported by the transport part 4 passes and stops at the corresponding position, the inspection carrier 906 is driven to move vertically, and after the battery pack inspection is completed, the battery pack is placed on the transport part 4 and reset, so that the battery pack after inspection is transmitted to the offline robot arm 10 for grabbing and putting into the box. The inspection carriage 906 is provided with an inspection slide 904 that slides vertically toward the bottom of the transport member 4. The inspection slides 904 can be driven by the inspection motor to move closer to each other to press the two sides of the battery pack. The inspection slide 904 is provided with four inspection jaws 903 driven by a rotating member. The four inspection jaws 903 are driven to open and close by a control cylinder to clamp or release the four long sides of the battery pack. The rotating member includes a rotating motor provided on one side of the inspection slide 904. The rotating motor drives the control cylinder of the inspection jaws 903 through a transmission belt, and an angle detector is provided on the periphery of the control cylinder to make the control cylinder rotate forward and backward in a cycle. A weld observation head 907 is fixedly provided on the inspection carriage 906 corresponding to the center of the transport member 4 to detect the welds of the battery pack shell when the rotating member drives the inspection cylinder 905 to make the inspection jaws 903 drive the battery pack to rotate, thereby ensuring the shell's ability to protect the battery pack. Furthermore, during the rotation of the battery pack, the angle detector can control the rotary motor of the stepper motor to rotate to a corresponding angle, thereby improving the quality of the shell weld captured by the weld observation head 907, that is, improving the accuracy of the shell welding quality inspection. After the inspection is completed, the transport unit 4 will transfer the processed battery pack to the working range of the offline robot arm 10, so that the offline robot arm 10 can grab it and place it in the transfer box for subsequent transportation. The transport unit 4 is a structure composed of two sprockets set at intervals to drive two corresponding chains. The specific operation and control of the transport unit 4 should be understood as existing technology.

[0081] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various variations or modifications within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A soft pack battery assembly welding device, characterized by: The invention has a transport member (4) capable of transporting a first clamping tray (11) and a second clamping tray (12); the transport member (4) is provided with a tab welding assembly (1), a measuring assembly (2), an upper shell assembly (5), a first welding assembly (6), a flip assembly (7), a second welding assembly (8), a detection assembly (9) and an offline robot arm (10) in sequence, so as to complete the welding of the tabs of the battery pack and the installation of the shell; The upper shell assembly (5) includes an upper shell base (501) that carries the transport member (4); a first opening and closing assembly (502) capable of opening the first clamping tray (11) and a second opening and closing assembly (505) capable of opening the second clamping tray (12) are provided on the upper shell base (501); a tray changing member (503) is provided between the first opening and closing assembly (502) and the second opening and closing assembly (505) to transfer the battery pack that has been subjected to tab processing in the first clamping tray (11) to the second clamping tray (12) for clamping; The disc changing member (503) includes a disc changing rack (5032) provided on the upper shell base (501), and the disc changing rack (5032) can drive a first clamping claw (5031) capable of clamping a battery pack and moving along the transport direction of the transport member (4); The first clamping tray (11) clamps the battery pack via a screw-nut pair structure, and the second clamping tray (12) clamps and positions the battery pack by pressing with an elastic structure.

2. A soft pack battery assembly welding device as claimed in claim 1, characterized in that: The tab welding assembly (1) comprises a fixing frame (101) carrying a transport member (4); a distributing member (103) arranged perpendicularly to the transport member (4) is provided on the fixing frame (101) to transport the first clamping tray (11) and the battery pack conveyed by the transport member (4) to the tab welding nozzle (1065), and to weld the battery pack tabs in cooperation with a laser welding member (1055) arranged on the fixing frame (101) and cooperating with the tab welding nozzle (1065).

3. The soft pack battery assembly welding device according to claim 1, characterized in that: The measuring assembly (2) comprises a frame (201) carrying a transport member (4), the frame (201) being provided with a first detection mechanism (202), a pressure difference detection member (205), and a DCIR detection member (206) in sequence along the transmission direction of the transport member (4), and the first detection mechanism (202) comprising a camera (2021) provided on the frame (201) for detecting the welding quality of the tabs after welding of the battery pack.

4. A soft pack battery assembly welding device as claimed in claim 3, characterized in that: The frame (201) is provided with a shadowless board (203) corresponding to the camera (2021), and the shadowless board (203) is a light-transmitting board with a light source provided therein.

5. The soft pack battery assembly welding device according to claim 1, characterized in that: The upper shell base (501) is provided with a recycling station (504) corresponding to the first opening and closing component (502) to recycle the first clamping tray (11), and the upper shell base (501) is provided with two loading parts (506) arranged perpendicularly to the transport part (4) to place the bottom of the shell into the second clamping tray (12), and is provided with a tray changing part (503) to grab the battery pack with the tabs welded in the first clamping tray (11) and place it in the second clamping tray (12), and can cover the top of the shell on the periphery of the battery pack.

6. The soft pack battery assembly welding device according to claim 1, characterized in that: The first welding assembly (6) comprises a first welding bed (601) carrying a transport member (4), and the first welding bed (601) is provided with a side welding nozzle (605) and a top welding nozzle (6014) that can move corresponding to the side and top edges of the shell, so as to cooperate with a first laser (6010) driven by a welding robot arm to weld the top of the shell.

7. The soft pack battery assembly welding device according to claim 1, characterized in that: The flip assembly (7) includes a flip frame (702) that carries the transport member (4). The flip frame (702) is provided with a second opening and closing assembly (505) and a flip clamp (707) for grasping and placing the battery pack and the housing. The second opening and closing assembly (505) is used to open the second clamping tray (12) for the flip clamp (707) to clamp the battery pack. The flip clamp (707) is driven by a ninth cylinder (704) and a flip motor (706) provided on the flip frame (702) to flip the battery pack and the housing and then reset them.

8. The soft pack battery assembly welding device according to claim 1, characterized in that: The second welding assembly (8) comprises a second welding bed (801) carrying the transport member (4), and the second welding bed (801) is provided with a movable top edge welding nozzle (6014) and a long edge welding nozzle (805) to cooperate with a second laser driven by a welding robot arm to weld the bottom of the shell.

9. The soft pack battery assembly welding device according to claim 1, characterized in that: The detection assembly (9) includes a detection base (901) that carries a transport member (4), and a second opening and closing assembly (505) and a detection clamp (903) that can grasp and place the shell are provided on the detection base (901). After the second opening and closing assembly (505) opens the second clamping tray (12), the detection clamp (903) can be driven by the detection cylinder (905) and the rotating member on the detection base (901) to order the shell to flip over, so as to cooperate with the weld observation head (907) provided on the corresponding transport member (4) to detect the welding quality of the shell.

10. A soft pack battery assembly welding method, characterized in that: The tab welding assembly (1) included in the soft-pack battery assembly welding device according to any one of claims 1 to 9 is used to perform tab welding, and after the tab welding is completed, the first clamping tray (11) and the second clamping tray (12) are replaced and covered with a shell, and then the first welding assembly (6), the flip assembly (7) and the second welding assembly (8) are used to realize the welding processing of the battery pack.

Images