Soft package battery assembling and welding device and method

Abstract

The invention relates to the technical field of soft package battery pack processing, in particular to a soft package battery assembling and welding device and a method thereof.The soft package battery assembling and welding device is provided with a feeding assembly, a tab processing assembly, a rubberizing assembly, a stacking assembly and a bending assembly, the tab processing assembly and the rubberizing assembly are connected through a transfer mechanical arm so as to carry out battery cell transmission, and the stacking assembly is connected through a transmission piece so as to carry out battery cell transmission; the tab processing assembly, the rubberizing assembly, the stacking assembly and the bending assembly are respectively provided with a detection structure so as to timely find processing errors in each link during pretreatment before cell processing; the detection structure comprises an electrode test piece and a size inspection piece in the tab processing assembly, an observation piece in the rubberizing assembly, a detection piece in the stacking assembly and a position finder of the bending assembly. The problem that the final yield is reduced to a certain extent due to the fact that pretreatment equipment before soft package battery processing cannot detect all procedures in time in the prior art is solved.

Description

Technical Field

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

[0002] In the field of welding processing of soft-pack battery packs, in order to meet the process requirements for installing busbars, positioning jigs with the function of positioning busbar trays are often used. However, there are significant technical bottlenecks in the structural design of existing positioning jigs: on the one hand, there is a compatibility contradiction between the jig structure integrating the busbar positioning function and the installation process of the protective shell of the soft-pack battery pack, resulting in the inconvenient installation of the protective shell and destroying the continuity of the processing process; on the other hand, in order to achieve stable positioning of the busbar, the jig generally adopts rigid clamping structures such as lead screw nuts. Although this design ensures the positioning accuracy, it severely restricts the convenience of taking and placing the soft-pack battery pack and the shell.

[0003] When it is necessary to perform flip welding on the bottom surface of the protective shell, the problem of difficult taking and placing caused by the rigid clamping structure is further highlighted. It is difficult for operators to efficiently complete the flip welding process, making the originally smooth processing process stuck. The above technical defects directly cause inconvenience in the processing operations of workers, not only prolonging the processing cycle of a single product, but also reducing the processing efficiency of the soft-pack battery pack as a whole, and it is difficult to meet the urgent need for efficiency improvement in large-scale production. Summary of the Invention

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

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a soft-pack battery assembly welding device, which has a transport member capable of transporting a first clamping tray and a second clamping tray. The transport member is sequentially provided with an ear welding assembly, a measurement assembly, an upper shell assembly, a first welding assembly, a flipping assembly, a second welding assembly, a detection assembly, and a down-line robotic arm to complete the welding of the battery pack ears and the installation of the shell;

[0006] The upper shell assembly includes an upper shell base for carrying the transport member. The upper shell base is provided with a first opening and closing assembly capable of opening the first clamping tray and a second opening and closing assembly capable of opening the second clamping tray. A tray changing member is arranged between the first opening and closing assembly and the second opening and closing assembly to transfer the battery pack that has undergone ear processing in the first clamping tray to the second clamping tray and clamp it;

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

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

[0009] As a further optimization of a flexible battery assembly and welding device according to the present invention: the ear welding assembly includes a fixed frame for carrying and transporting components. A distributing component perpendicular to the transporting component is provided on the fixed frame to transport the first clamping tray and the battery pack transported by the transporting component to the ear welding nozzle, and cooperate with a laser welding component provided on the fixed frame and matching the ear welding nozzle to weld the battery pack ears.

[0010] As a further optimization of a flexible battery assembly and welding device according to the present invention: the measuring assembly includes a frame for carrying and transporting components. A first detection mechanism, a differential pressure detection component, and a DCIR detection component are sequentially provided on the frame along the transporting direction of the transporting component. And the first detection mechanism includes a camera provided on the frame to detect the welding quality of the battery pack ears after welding treatment.

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

[0012] As a further optimization of a flexible battery assembly and welding device according to the present invention: a recycling station is provided on the upper shell base corresponding to the first opening and closing assembly to recycle the first clamping tray. Two feeding components perpendicular to the transporting component are provided on the upper shell base to place the bottom of the outer shell into the second clamping tray by an outer shell pre-changing tray component, and can cover the top of the outer shell around the battery pack.

[0013] As a further optimization of a flexible battery assembly and welding device according to the present invention: the first welding assembly includes a first welding bed for carrying and transporting components. A side welding nozzle and a top welding nozzle capable of moving corresponding to the side and top edges of the outer shell are provided on the first welding bed to cooperate with a first laser driven by a welding robot arm to weld the top of the outer shell.

[0014] As a further optimization of a flexible battery assembly and welding device according to the present invention: the flipping assembly includes a flipping frame for carrying and transporting components. A second opening and closing assembly and flipping claws for gripping and releasing the battery pack and the outer shell are provided on the flipping frame. The second opening and closing assembly is used to open the second clamping tray for the flipping claws to grip the battery pack, and the flipping claws are driven by a ninth cylinder and a flipping motor provided on the flipping frame to flip the battery pack and the outer shell and then reset.

[0015] As a further optimization of a soft-pack battery assembly and welding device of the present invention: the second welding assembly includes a second welding bed for carrying and transporting components, and a movable top-edge welding nozzle and a long-edge welding nozzle are provided on the second welding bed 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 and welding device of the present invention: the detection assembly includes a detection base for carrying and transporting components, and a second opening and closing assembly and a detection jaw capable of grasping and releasing the outer shell are provided on the detection base. After the second opening and closing assembly opens the second clamping tray, the detection jaw can turn the outer shell under the drive of a detection cylinder and a rotating part provided on the detection base to cooperate with a weld seam observation head provided corresponding to the transport component to detect the welding quality of the outer shell.

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

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention jointly reinforces the ears of the stacked battery pack after stacking and bending the ears by setting a transport component and an ear welding component, a measurement component, an upper shell component, a first welding component, a flipping component, a second welding component, a detection component, and a down-line robot arm arranged in sequence. At the same time, the outer shell is covered on the outside of the stacked battery pack to complete the processing of the battery pack. In addition, the system can directly put the installed battery pack into the box for convenient transportation. During the upper shell process, the upper shell component can replace the first clamping tray used by the ear welding component with the second clamping tray, and the second clamping tray adopts an elastic structure, effectively realizing the clamping and positioning of the stacked battery pack and the outer shell, and being convenient for opening and closing at the same time, improving the efficiency of the equipment for flipping and welding the outer shell, balancing the difference between ear welding and outer shell welding, and thus improving the processing efficiency of the soft-pack battery pack to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a top view structural schematic diagram of the present invention;

[0020] Figure 2 is a structural schematic diagram of the ear welding component of the present invention;

[0021] Figure 3 is a structural schematic diagram of the feeding component of the present invention;

[0022] Figure 4 is a structural schematic diagram of the auxiliary welding component of the present invention;

[0023] Figure 5 Schematic structural diagram of the measurement component of the present invention;

[0024] Figure 6 Schematic structural diagram of the DCIR detection component of the present invention;

[0025] Figure 7 Schematic structural diagram of the upper shell component of the present invention;

[0026] Figure 8 Schematic structural diagram of the disk-changing component of the present invention;

[0027] Figure 9 Schematic structural diagram of the upper shell part of the present invention;

[0028] Figure 10 Schematic structural diagram of the first welding component of the present invention;

[0029] Figure 11 Schematic structural diagram of the first perspective of the flipping component of the present invention;

[0030] Figure 12 Schematic structural diagram of the second perspective of the flipping component of the present invention;

[0031] Figure 13 Schematic structural diagram of the second welding component of the present invention;

[0032] Figure 14 Schematic structural diagram of the detection component of the present invention;

[0033] Markings in the figure: 1. Tab welding assembly; 101. Fixed frame; 102. Auxiliary welding piece; 1021. Auxiliary welding frame; 1022. Longitudinal row frame; 1023. Transverse row frame; 1024. Auxiliary fixing frame; 1025. Auxiliary fixing cylinder; 1026. Pushing plate; 1027. Telescopic rod; 1028. Shock-absorbing spring; 1029. Pushing and pressing plate; 103. Feeding piece; 1031. Transmission shaft; 1032. Conveyor chain; 1033. Lifting tray; 1034. Pressing and fixing wheel; 1035. Pushing cylinder; 1036. Position measuring instrument; 1037. Limiting block; 1038. Cam divider; 1039. Transmission frame; 104. Fire prevention assembly; 1041. Guide frame; 1042. Fire extinguishing box; 1043. Monitoring piece; 105. Tab welding piece; 1051. Fourth bearing frame; 1052. Variable pitch row frame; 1053. Auxiliary row frame; 1054. Positioning frame; 1055. Laser welding piece; 106. Guide welding piece; 1061. Guide welding frame; 1062. Adjusting platform; 1063. Detection instrument; 1064. Adjusting 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 plate; 204. Second support frame; 205. Differential pressure detection piece; 2051. Detection rod; 2052. First cylinder; 2053. First sliding plate; 206. DCIR detection piece; 2061. Second fixing plate; 2062. Connecting plate; 2063. Measuring spring; 2064. Second cylinder; 207. Positioning assembly; 2071. First swinging wheel; 2072. Vertical plate; 2073. Second swinging wheel; 2074. Horizontal plate; 3. Sampling station; 4. Transport piece; 5. Upper shell assembly; 501. Upper shell base; 502. First opening and closing assembly; 503. Disk changing piece; 5031. First clamping claw; 5032. Disk changing row frame; 50321. Main row frame; 50322. Auxiliary row frame; 50323. Vertical row frame; 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 piece; 5061. Loading seat; 5062. Row frame seat; 5063. Loading row frame; 50631. First upper shell row frame; 50632. Second upper shell row frame; 50633. Third upper shell row frame; 5064. Claw shell cylinder; 5065. Shell storage frame; 5066. Glue applying head; 5067. Confirming head; 5068. Shell holding cylinder; 6. First welding assembly; 601. First welding bed; 602. Welding frame; 603. Seventh cylinder; 604. First sliding seat; 605. Side welding nozzle; 606. First mounting seat; 607. Positioning image machine; 608. Eighth cylinder; 609. Fixed pressing plate; 6010. First laser; 6011. Pushing plate; 6012. Flange; 6013. Slide bar; 6014. Top edge welding nozzle; 7. Flipping assembly;701. Flip seat; 702. Flip frame; 703. Second mounting plate; 704. Ninth cylinder; 705. Flip slide plate; 706. Flip motor; 707. Flip gripper; 8. Second welding assembly; 801. Second welding bed; 802. Long side welding frame; 803. Spacing adjustment cylinder; 804. Angle plate; 805. Long side welding nozzle; 806. Docking cylinder; 807. Displacement bracket; 9. Detection assembly; 901. Detection base; 902. Detection frame; 903. Detection gripper; 904. Detection slide; 905. Detection cylinder; 906. Detection carrier; 907. Weld seam observation head; 10. Off-line robotic arm; 11. First clamping tray; 12. Second clamping tray; Detailed implementation manners

[0034] To better understand the present invention, the content of the present invention will be further clarified below in conjunction with embodiments. However, the content of the present invention is not limited to the following embodiments.

[0035] As Figure 1 shown, a soft-pack battery assembly and welding device has a transport member 4 and a tab welding assembly 1, a measurement assembly 2, an upper shell assembly 5, a first welding assembly 6, a flipping assembly 7, a second welding assembly 8, a detection assembly 9, and an off-line robotic arm 10 arranged in sequence along the transport member 4. Thereby, the tabs of the stacked battery pack after stacking and bending the tabs are strengthened, and at the same time, the outer shell of the stacked battery pack is covered to complete the processing of the battery pack, and the installed battery pack can be directly put into the box for convenient transportation. During the upper shell 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, which can realize the clamping and positioning of the stacked battery pack and the outer shell, and at the same time can be conveniently opened and closed to improve the efficiency of flipping and welding the outer shell of the device, that is, improve the efficiency of processing the battery pack.

[0036] As 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 feeding part 103 and a tab welding part 105 are arranged in sequence. Particularly importantly, a secondary welding part 102 and a guiding welding part 106 are assembled above the feeding part 103, and these two major components cooperate with the tab welding part 105 to complete the tab welding process. The feeding part 103 is responsible for accurately positioning the first clamping tray 11 and the soft-pack battery pack conveyed on the transport part 4 to the corresponding positions of the secondary welding part 102 and the guiding welding part 106. Subsequently, through the adjustment of the feeding part 103, the soft-pack battery pack is lifted to a specific height to ensure that its tabs are accurately aligned with the secondary welding part 102 and the guiding welding part 106. In addition, this process also lifts the soft-pack battery pack to a relatively independent space, aiming to reduce the interference of 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 secondary welding part 102 adjusts its own posture to drive the guiding welding part 106 to be initially aligned with the tabs of the soft-pack battery pack. At the same time, the guiding welding part 106 will perform precise measurement, and the secondary welding part 102 will adjust according to the measurement results to ensure the precise correspondence between the guiding welding part 106 and the tabs. Immediately afterwards, the guiding welding part 106 cooperates with the tab welding part 105 to weld the tabs. After the welding of the tabs on one side is completed, the feeding part 103 turns the soft-pack battery pack and repeats the above operations to complete the tab welding on the other side. After the welding of the tabs on both sides is completed, the feeding part 103 runs in the reverse direction to convey the welded soft-pack battery pack back to the transport part 4 for subsequent processing operations.

[0037] As Figure 3As shown in the figure, the component of the distribution part 103 includes a transmission rack 1039 corresponding to the transport part 4. Two transmission shafts 1031 are assembled on the transmission rack 1039. One of the transmission shafts 1031 is driven by a driving motor and can rotate forward and backward. Conveyor sprockets are installed on both of the two transmission shafts 1031 to drive the conveyor chain 1032 tensioned on the two transmission shafts 1031 to rotate cyclically. This move aims to improve the transmission efficiency and ensure the stable transmission of the soft-pack battery pack. The conveyor chain 1032 is composed of two chains, and the chain links correspond to each other one by one and are arranged in parallel. The outer sides of the chain links are clamped with the two bottoms of the protective sheet. The protective sheet is designed in an inverted U shape, aiming to protect the surface of the soft-pack battery pack, and at the same time increase the friction of the soft-pack battery pack during the transmission process and reduce the risk of slipping on the conveyor chain 1032. The driving motor selects a forward and reverse stepper motor, which has a simple structure, convenient control, and reliable operation. It can realize the forward and reverse cyclic operation of the two transmission chains, so as to realize the stable two-way transmission of the soft-pack battery pack, improve the flexibility of the equipment, and ensure the smooth progress of the production process. Two conveyor sprockets and two conveyor chains 1032 are respectively installed at both ends of the transmission shaft 1031 inside the transmission rack 1039. This move aims to enhance the bearing capacity of the distribution part 103 and ensure the stability of the soft-pack battery pack after moving to the vertical position of the work station. A push-up cylinder 1035 connected to the fixed frame 101 is provided between the two transmission chains. The push-up cylinder 1035 is driven to rotate by a cam divider 1038 provided on the fixed frame 101. A lifting tray 1033 is fixedly installed at the telescopic end of the push-up cylinder 1035. The edge of the lifting tray 1033 corresponds to a position detector 1036 provided on the fixed frame 101. The position detector 1036 is an infrared sensor. When the infrared ray emitted by the position detector 1036 is blocked by the first clamping tray 11 clamping the battery pack, the two conveyor chains 1032 will stop running. Subsequently, the push-up cylinder 1035 will push the lifting tray 1033 to drive the first clamping tray 11 and the battery pack to move up to the corresponding height position. Pressing wheels 1034 are provided on both sides of the fixed frame 101 corresponding to the lifting tray 1033 along the rotation direction of the conveyor chain 1032. The pressing wheels 1034 are pushed by an auxiliary cylinder provided 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 position of the first clamping tray 11, so as to further ensure the stability of the first clamping tray 11 during the process of welding the pole ears. A limiting block 1037 driven by a limiting cylinder to perform vertical displacement is also provided on the fixed frame 101. The limiting block 1037 can prevent the position change caused by the vibration of the push-up cylinder 1035 during the up and down movement or angle change of the first clamping tray 11. This move aims to reduce the possibility of position change between the first clamping tray 11 and the auxiliary welding part 102 and the guiding welding part 106 after changing the angle position, that is, reduce the time for the auxiliary welding part 102 and the guiding welding part 106 to be repeatedly calibrated with the pole ears, so as to ensure the efficiency of fixing the pole ear welding process.When it is necessary to input or output the first clamping tray 11, the limiting cylinder can lower the limiting block 1037 so that the first clamping tray 11 can pass through stably to achieve input or output.

[0038] Such as Figure 4As shown in the figure, the auxiliary welding part 102 includes an auxiliary welding frame 1021 and a longitudinal frame 1022 provided on the fixing frame 101. A pushing cylinder 1035 is fixedly installed at the center of the auxiliary welding frame 1021. The pushing cylinder 1035 drives a pushing plate 1026. Telescopic rods 1027 are installed at the four corners of the pushing plate 1026. The telescopic ends of the four telescopic rods 1027 are fixedly connected to a pushing and pressing plate 1029. A shock-absorbing spring 1028 is arranged around the telescopic rod 1027 between the pushing and pressing plate 1029 and the pushing plate 1026. After the pushing cylinder 1035 pushes the soft-pack battery pack to an appropriate height, the auxiliary fixing cylinder 1025 will drive the pushing and pressing plate 1029 and the pushing plate 1026 to press against 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. During the process of the pushing and pressing plate 1029 pressing against the soft-pack battery pack, the shock-absorbing spring 1028 will reduce the vibration generated when the auxiliary fixing cylinder 1025 extends and presses against the soft-pack battery pack, thereby reducing the position change of the soft-pack battery pack caused by vibration. The longitudinal frame 1022 drives the transverse frame 1023 to move longitudinally, while the transverse frame 1023 drives the guiding welding part 106 to move transversely to adjust the position of the guiding welding part 106 to correspond to the tab. The guiding welding part 106 includes a guiding welding frame 1061 driven by the transverse frame 1023 to move transversely. An adjustment platform 1062 is provided at the bottom of the guiding welding frame 1061. Four detectors 1063 are installed on the adjustment platform 1062. These four detectors 1063 are inclinedly distributed so that their laser lines can cross each other through the small openings of two tab welding nozzles 1065 provided on the guiding welding frame 1061 to correspond to the four vertices of the tab of the soft-pack battery pack, that is, to assist in determining the welding position of the tab of the soft-pack battery pack. After the laser is reflected at the four vertices of the tab of the soft-pack battery pack, it crosses the welding opening of the tab welding nozzle 1065 again and is detected by the detector 1063. This process not only realizes the accurate measurement and verification of the tab position, but also improves the reliability and stability of the measurement. During the detection process, the corresponding electronic control system will be coordinated to control the operation of the longitudinal frame 1022 and the transverse frame 1023 to ensure the accurate correspondence between the tab of the soft-pack battery pack and the tab welding nozzle 1065. After the position detection is completed, the adjustment platform 1062 will drive the corresponding detector 1063 to make way so that the tab welding nozzle 1065 can cooperate with the tab welding part 105 to perform tab welding. The feeding part 103, the guiding welding part 106, the longitudinal frame 1022, the transverse frame 1023 and the auxiliary fixing frame 1024 installed on the auxiliary welding frame 1021 are all configured with two and are arranged in sequence along the width direction of the fixing frame 101, thereby improving the efficiency of tab welding. A variable-distance frame 1052 is installed on the fourth bearing frame 1051 provided on the fixing frame 101. The variable-distance frame 1052 drives the auxiliary frame 1053 to approach the tab welding nozzle 1065. The auxiliary frame 1053 drives the positioning frame 1054 to move along the width direction of the fixing frame 101.The positioning frame 1054 is fixedly installed with a laser welding part 1055 and an infrared sensor aligned with the ear welding nozzle 1065 at the end facing the ear welding nozzle 1065. When the laser emitted by the infrared sensor passes through the side wall of the ear welding nozzle 1065, it indicates that the preliminary movement is in place. After the laser emitted by the infrared sensor passes through the hollow structure of the ear welding nozzle 1065 here, the parameter position of the laser welding part 1055 can be stably corresponded to the ear welding nozzle 1065. Then, the welding laser emitted by the laser welding part 1055 passes through the ear welding nozzle 1065 to weld the ear. Parameter calibration and control adjustment can also be carried out through the numerical control system. The equipment model and working principle used for specifically corresponding the laser welding part 1055 to the ear welding nozzle 1065 should be understood as the prior art. During the welding process, the pipeline connected to the ear welding nozzle 1065 will eject a protective gas and absorb harmful gases after welding, so as to ensure the welding quality of the ear. In addition, the setting of the auxiliary frame 1053 enables the two ear welding nozzles 1065 to take turns to perform welding operations, further improving the efficiency of welding the ears. One of the two ear welding nozzles 1065 is connected to the welding guide frame 1061 through an adjusting component 1064, and the other is fixedly arranged on the welding guide frame 1061, so as to facilitate the operator to adjust the distance between the two ear welding nozzles 1065 to adapt to different-sized ear bending surfaces for use. The adjusting component 1064 includes an auxiliary motor arranged on the welding guide frame 1061. The auxiliary motor drives an adjusting screw rod rotatably arranged on the welding guide frame 1061. The auxiliary motor is a stepper motor that can rotate forward and backward. When the auxiliary motor rotates forward and backward, it can drive the ear welding nozzle 1065 that is slidably matched with the welding guide frame 1061 to displace through the cooperation of the adjusting screw rod and the threaded block connected to the ear welding nozzle 1065, so as to adjust the distance between the two ear welding nozzles 1065.

[0039] Such as Figure 2As shown, a fire prevention component 104 is provided at a position on the fixing frame 101 corresponding to the laser welding part 1055. The fire prevention component 104 includes a monitoring part 1043 provided on the auxiliary fixing frame 1024 and a guiding frame 1041 provided on the transmission frame 1039 facing the laser welding part 1055. The monitoring part 1043 is an image monitoring device or a smoke alarm device. When a fire occurs during the welding process of the soft-pack battery pack, the monitoring part 1043 will send a signal to control the reverse rotation of the conveying chain 1032, so as to convey the burning soft-pack battery pack to the guiding frame 1041. Subsequently, the guiding frame 1041 will guide 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 soft-pack battery pack. It is particularly worth noting that multiple balls can be provided on the inclined surface of the guiding frame 1041 to reduce the friction between the soft-pack battery pack and the inclined surface of the guiding 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 guiding frame 1041, that is, shortening the time when the soft-pack battery pack poses a threat to the outside equipment.

[0040] As Figure 5 and Figure 6 shown, the measuring component 2 includes a frame 201 for carrying the transport part 4, and a first detection mechanism 202 and a second detection mechanism are arranged in sequence along the transmission direction of the soft-pack battery pack. In this embodiment, a first detection station and a second detection station are arranged in sequence along the transmission direction of the transport part 4; the first detection mechanism 202 is used for post-welding detection of the tabs of the soft-pack battery pack, and the second detection mechanism is used for differential pressure detection and DCIR detection of the soft-pack battery pack. As Figure 5 shown, the processed soft-pack battery pack enters the measuring component 2 from front to back, and the transport part 4 drives the soft-pack battery pack to pass through the first detection station and the second detection station in sequence, so that the first detection mechanism 202 performs post-welding detection of the tabs, and the second detection mechanism performs differential pressure detection and DCIR detection, improving the consistency and reliability of the soft-pack battery pack products.

[0041] In this embodiment, during the processing of the soft-pack battery pack, multiple battery packs need to be placed together in an orderly manner and reliably clamped 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 bus bar to 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 for collecting images of the tabs of the soft-pack battery pack, and transmits the collected images to the control unit. The control unit identifies the received images, and a collection area is formed between the two cameras 2021. As Figure 5 and Figure 6As shown, a first support frame 2023 is fixedly connected to the frame 201, and the first support frame 2023 includes two vertical support rods and a horizontal support rod located on both sides of the first detection station, and the two 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 the 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, and 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 mode between the first slide rail and the first support frame 2023 and the connection mode 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.

[0042] Mounting frames are provided at both ends of the first mounting plate 2022. The mounting frames 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 frame and the first mounting plate 2022 is a bolt connection; the camera 2021 is fixedly set on the mounting frame, and the connection between the camera 2021 and the mounting frame is a bolt connection to adapt to soft-pack battery packs of different sizes, thereby improving the scope of application of the present invention.

[0043] During the actual inspection process, due to the illumination of the lights in the workshop and the influence of the environment, the image captured by the camera 2021 deviates from the actual image. Therefore, a shadowless board 203 is provided on the side of the camera 2021 close to another camera 2021. The top of the shadowless board 203 is fixedly connected to the first mounting plate 2022. Correspondingly, the first mounting plate 2022 is provided with a plurality of fixing holes distributed along its length direction. The shadowless board 203 is connected to the fixing holes by bolts. The fixing holes at different positions correspond to the required position of the shadowless board 203 to achieve the function of adjusting the position of the shadowless board 203, and at the same time improve the quality of the image of the pole ear collected by the camera 2021. The shadowless board 203 is provided with a glass area for the camera 2021 to collect the image of the pole ear. Specifically, the shadowless board 203 is provided with a square hole, and a glass sheet is fixed in the square hole to form a glass area; the side of the shadowless board 203 away from the camera 2021 is provided with a light source distributed around the glass area to improve the quality of the image of the pole ear collected by the camera 2021.

[0044] In this embodiment, a fifth cylinder is provided below the collection area for lifting the soft-pack battery pack and moving it into the collection area. A third mounting plate is fixedly connected to the lower surface of the guide rail. The connection method between the third mounting plate and the guide rail is bolt connection. The fifth cylinder is fixed on the third mounting plate. Above the third mounting plate, a first lifting plate parallel to it is provided. A plurality of first sleeves are fixedly connected to the third mounting plate. In this embodiment, the number of first sleeves is [X] and they are evenly distributed on the third mounting plate. A plurality of first guide rods corresponding to the first sleeves one by one are fixedly provided on the first lifting plate. The top end of the guide rod is fixedly connected to the first lifting plate, and the bottom end of the guide rod passes through the first sleeve and extends below the third mounting plate. When the bottom plate enters the first detection station, the piston of the fifth cylinder pushes the first lifting plate upward, and the first lifting plate pushes the bottom plate upward, so that the soft-pack battery pack enters the collection area. The camera 2021 collects images of the tabs on both sides of the soft-pack battery pack and transmits them to the control unit for identification and detection.

[0045] In this embodiment, a first limiting plate is fixedly connected to the end of the first guide rod extending below the third mounting plate to limit the extreme displacement of the battery pack in the vertical direction.

[0046] The second detection mechanism includes a differential pressure detection member 205 for performing differential pressure 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 frame 201. Both the differential pressure detection member 205 and the DCIR detection member 206 are arranged on the second support frame 204. It should be noted that in the present invention, DCIR detection and differential pressure detection are simultaneously performed on the soft-pack battery pack. Both the differential pressure detection member 205 and the DCIR detection member 206 are commercially available products and will not be elaborated here.

[0047] The differential pressure detection component 205 includes two sets of oppositely arranged differential pressure detection units. Each differential pressure detection unit includes a plurality of detection rods 2051 corresponding to one side of the tabs in the soft-pack battery pack, and one end of the detection rod 2051 can be in contact with the corresponding tab. The other end of the detection rod 2051 is electrically connected to the corresponding differential pressure detection device. When the end of the detection rod 2051 is in contact with the corresponding tab, the differential pressure detection device measures the voltage of each battery pack. The detection rods 2051 of each differential pressure detection unit are divided into upper and lower groups, and the detection rods 2051 within each group are spaced apart along the extension direction of the guide rail to ensure that each tab is in contact with a detection rod 2051. The differential pressure detection unit further includes a first slide plate 2053 slidably disposed on the second support frame 204, and the first slide plate 2053 is driven by a first cylinder 2052. The detection rods 2051 of this differential pressure detection unit are all fixedly installed on the first slide plate 2053. Specifically, the first slide plate 2053 of the right differential pressure detection unit is fixed at the upper-middle position of the second support frame 204. The first cylinder 2052 of this differential pressure detection unit is installed on the first fixing plate by bolts. The first slide plate 2053 is fixedly connected to the piston extension end of the first cylinder 2052, that is, the first slide plate 2053 is a vertical plate. A connecting plate is fixedly connected to the bottom of the first slide plate 2053, and a plurality of connecting rods distributed along the extension direction of the guide rail are fixedly connected to the connecting plate. The detection rods 2051 are fixed on the connecting rods, and there are two detection rods 2051 on one connecting rod. When the right differential pressure detection unit is in contact with the tabs on the right side of the soft-pack battery pack, the first cylinder 2052 drives the first slide plate 2053 to slide towards the soft-pack battery pack, thereby driving the detection rods 2051 to slide towards the soft-pack battery pack until the detection rods 2051 are in contact with the corresponding tabs, and the differential pressure detection device measures the voltage of each battery pack. After the detection is completed, the first cylinder 2052 drives the first slide plate 2053 to slide away from the soft-pack battery pack, thereby driving the detection rods 2051 to separate from the corresponding tabs, and the detected soft-pack battery pack enters the next processing step.

[0048] The specific structure of the left differential pressure detection unit is as follows: The first fixing plate of the left differential pressure detection unit is fixed to the top of the second support frame 204. A sliding seat drivenly connected to the first cylinder 2052 is slidably arranged on the first fixing plate. The first sliding plate 2053 is slidably connected to the sliding seat and is driven by a sixth cylinder to move up and down. A connecting plate is fixedly connected to the bottom of the first sliding plate 2053. A plurality of connecting rods distributed along the extending direction of the guide rail are fixedly connected to the connecting plate. The detection rod 2051 is fixed to the connecting rod, and there are two detection rods 2051 on one connecting rod. When the left differential pressure detection unit contacts the left ear of the soft-pack battery pack, the sixth cylinder drives the second sliding plate to slide down to the required position. At the same time, the first cylinder 2052 drives the sliding seat to slide towards the soft-pack battery pack, thereby driving the second sliding plate to slide towards the soft-pack battery pack until the detection rod 2051 correspondingly contacts the left ear of the soft-pack battery pack. After both detection rods 2051 on both sides correspondingly contact the ears on both sides of the soft-pack battery pack, detection is carried out. After the detection is completed, the first cylinder 2052 drives the sliding seat to slide away from the soft-pack battery pack, separating the detection rod 2051 from the corresponding ear.

[0049] The DCIR detection member 206 includes two groups of DCIR detection members 206 respectively corresponding to the two electrodes of the soft-pack battery pack, namely the positive electrode and the negative electrode. The DCIR detection member 206 includes a detection head for connecting to the positive electrode or the negative electrode of the soft-pack battery pack. The two detection heads are electrically connected to the DCIR detection device. After the detection head contacts the corresponding electrode, the DCIR detection device performs DCIR detection on the soft-pack battery pack. The DCIR detection member 206 further includes a second fixing plate 2061 for mounting the detection head. The second fixing plate 2061 can be driven by a second cylinder 2064 to move up and down, and when the detection head moves up and down with the second fixing plate 2061, it can be connected to or separated from the positive electrode or the negative electrode of the soft-pack battery pack. A third fixing plate is fixedly connected in parallel below the second fixing plate 2061. The detection head is fixed to the third fixing plate, and the top end of the detection head is located between the third fixing plate and the second fixing plate 2061 for electrical connection with the transmission line. The bottom end of the detection head passes through the second fixing plate 2061 and is located below it for contacting the electrode of the soft-pack battery pack.

[0050] To prevent the detection head from damaging the electrodes of the soft-pack battery pack, a connecting plate 2062 fixedly connected to the piston of the second cylinder 2064 is arranged above the second fixed plate 2061, and a plurality of measuring springs 2063 are arranged between the connecting plate 2062 and the second fixed plate 2061. One end of the measuring spring 2063 is fixedly connected to the connecting plate 2062, and the other end of the measuring spring 2063 is connected to the second fixed plate 2061. Specifically, two slide bars 6013 perpendicular to the second fixed plate 2061 are fixedly connected to both ends of the second fixed plate 2061. Slide holes are formed in the connecting plate 2062. The top ends of the slide bars 6013 extend into the slide holes and the slide bars 6013 can slide along the slide holes. The measuring spring 2063 is sleeved on the part of the slide bar 6013 located between the second fixed plate 2061 and the connecting plate 2062. After the soft-pack battery pack is in the detection position, the second cylinder 2064 drives the 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 into close contact with the electrode of the soft-pack battery pack, improving the detection accuracy. At the same time, it avoids the situation that the detection head cannot be detected due to improper movement and the electrode is damaged due to excessive movement.

[0051] In this embodiment, a support plate is fixedly connected to the first sliding plate 2053. When the first sliding plate 2053 moves to the position where the detection rod 2051 contacts the corresponding tab, the support plate is located below the electrode of the soft-pack battery pack and contacts the lower surface of the electrode, playing a role in supporting the electrode and preventing the detection head from applying excessive pressure to the electrode and causing damage to the electrode, that is, playing a role in protecting the electrode.

[0052] A third cylinder installed on the frame 201 is arranged between the two DCIR detection members 206. A top plate is arranged 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 installed 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 fixed plate. A second guide rod is slidably arranged in the second sleeve. The top end of the second guide rod extends out of 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 to move upward. In this embodiment, the bottom end of the second guide rod passes through the second sleeve and extends out and is fixedly connected to a third limiting plate for limiting the extreme displacement of the soft-pack battery pack. When the soft-pack battery pack moves to the second detection station, the third cylinder pushes the top plate to rise, thereby driving the soft-pack battery pack to rise to the detection position. The differential pressure detection member 205 and the DCIR detection member 206 detect the soft-pack battery pack. After the detection is completed, the piston of the third cylinder retracts, and the soft-pack battery pack descends to the initial position and is transported to the next processing station for processing through the transport member 4.

[0053] During the differential pressure detection and DCIR detection processes of the soft-pack battery pack, sparks are likely to be generated at the contact part between the detection rod 2051 and the tab. Therefore, several fourth cylinders for pushing the soft-pack battery pack away from the top plate are provided on the top plate, and several rollers are rotatably arranged on the top plate. The axis of the roller is parallel to the extending direction of the guide rail. In this embodiment, the number of the fourth cylinders is two. A water tank is arranged on one side of the frame 201, and a second cylinder 2064 for pushing the soft-pack battery pack away from the top plate into the water tank is arranged on the other side of the frame 201. 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 plate 2053 to give way to the soft-pack battery pack. At the same time, the sixth cylinder drives the second slide plate to move upward to avoid the soft-pack battery pack, so that it can smoothly enter the water tank. Then, the fourth cylinder jacks up 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, improving the safety of the detection equipment.

[0054] In the present invention, a positioning scanner is arranged in front of the first detection station, and a scan code is arranged 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 the extending direction of the guide rail is arranged on the guide rail. The positioning assembly 207 includes a positioning cylinder fixedly installed on the guide rail. A fixed seat is fixedly connected below the guide rail, the positioning cylinder is fixedly installed on the fixed seat, the top end of the piston of the positioning cylinder is fixedly connected with a base, and a first swing wheel 2071 and a second swing wheel 2073 are rotatably arranged on the base. A vertical plate 2072 is arranged on the first swing wheel 2071, and the vertical plate 2072 is fixedly connected with the outer side wall of the first swing wheel 2071. A horizontal plate 2074 is arranged on the second swing wheel 2073, and the horizontal plate 2074 is fixedly connected with the outer side wall of the second swing wheel 2073. A receiving groove for receiving the vertical plate 2072 is formed on the bottom plate. When the soft-pack battery pack is being transported, the positioning assembly 207 is located below the bottom plate to ensure the smooth passing of the soft-pack battery pack. When the positioning scanner scans that the bottom plate enters the first detection station, the transport member 4 stops working, and the positioning cylinder pushes the base upward. The vertical plate 2072 enters the receiving groove, and the horizontal plate 2074 contacts the lower surface of the bottom plate. At this time, the third cylinder and the fifth pneumatic cylinder jack up the corresponding soft-pack battery pack into the detection position. In the present invention, when the bottom plate is misaligned due to inertia, during the upward movement of the base, the vertical plate 2072 will deflect and enter the receiving groove. And as the vertical plate 2072 enters the receiving groove, the first swing wheel 2071 will push the bottom plate to correct its position, thereby ensuring the accuracy of the detection.

[0055] As Figure 1 shown, in order to improve the welding quality of the tabs, an inspection station 3 corresponding to the transmission assembly is provided between the upper shell assembly 5 and the measuring assembly 2 to inspect the battery pack after tab welding or install components.

[0056] As shown Figure 7 in the figure, the upper shell assembly 5 includes an upper shell base 501 for carrying the transport piece 4. The upper shell base 501 is correspondingly 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 respectively used to open the first clamping tray 11 and the second clamping tray 12. The first clamping tray 11 and the second clamping tray 12 are a hard clamping structure and an elastic clamping structure respectively. A recycling station 504 is provided at the position corresponding to the first opening and closing assembly 502 on the upper shell base 501, so as to facilitate the operator to collect and reuse the unused first clamping tray 11. A feeding part 506 is provided at the position corresponding to the second opening and closing assembly 505 on the upper shell base 501 to place the bottom of the outer shell into the second clamping tray 12, and a tray changing part 503 is provided to grab the battery pack after tab welding in the first clamping tray 11 and place it into the second clamping tray 12. The tray changing part 503 includes a tray changing gantry 5032 provided on the upper shell base 501 to cooperate with the corresponding first clamping claw 5031 to clamp and stack and grab the battery pack after tab welding, and convey it to the second clamping tray 12 with the bottom of the outer shell at the position corresponding to the second opening and closing assembly 505 of the transport piece 4. Subsequently, the top of the outer shell can be placed on the top of the stacked battery pack through another feeding part 506 to be butted with the bottom of the outer shell. Thus, the feeding operation of the battery pack outer shell is completed.

[0057] As shown Figure 8 in the figure, the tray changing gantry 5032 includes a main gantry 50321 fixedly provided on the upper shell base 501 and arranged along the transmission direction of the transport piece 4. The main gantry 50321 drives an auxiliary gantry 50322 perpendicular to it, and the auxiliary gantry 50322 can drive a vertical gantry 50323 to drive the first clamping claw 5031 to stably displace, so as to transport the stacked battery pack from the section of the transport piece 4 transporting to the first clamping tray 11 to the section of transporting to the second clamping tray 12. As shown Figure 9As shown in the figure, the loading part 506 includes a loading base 5061 corresponding to the upper shell base 501. Three gantry bases 5062 are evenly arranged on the loading base 5061. Loading gantries 5063 are arranged on the three gantry bases 5062. A claw shell cylinder 5064, a glue applicator head 5066, and a shell grabbing cylinder 5068 are respectively driven on the three loading gantries 5063. And a confirmation head 5067 for detecting the glue application quality of the glue applicator head 5066 is arranged on the loading gantry 5063 between the glue applicator head 5066 and the shell grabbing cylinder 5068. The confirmation head 5067 can take images and process them at the control unit for transmission to determine whether the glue application is qualified. The claw shell cylinder 5064 can be driven by the corresponding loading gantry 5063 to correspond to the shell storage rack 5065 arranged on the upper shell base 501. Specifically, the shell storage rack 5065 is composed of limiting strips arranged corresponding to the four corners of the bottom of the outer shell, to pick up the bottom of the outer shell placed in the upper shell rack and place it on the carrier, and to transfer the grabbed outer shell to the glue applicator head 5066, so that the glue applicator head 5066 can apply glue to the bottom of the outer shell under the drive of the corresponding loading gantry 5063. Finally, the carrier can transfer the bottom of the outer shell coated with glue to the shell grabbing cylinder 5068, so that the shell grabbing cylinder 5068 places the bottom of the outer shell into the opened second clamping tray 12, and the glue can stably connect the stacked battery packs transferred by the first clamping claw 5031 to the bottom of the outer shell. The carrier is a conveyor belt rotatably arranged on the upper shell base 501, and concave racks for positioning the bottom of the outer shell are arranged on the surface of the conveyor belt, and the conveyor belt is driven by a motor arranged on the upper shell base 501 to transport the bottom of the outer shell for corresponding transfer and placement. The loading gantry 5063 includes a first upper shell gantry 50631 arranged on the gantry base 5062 along the transmission direction of the carrier. A second upper shell gantry 50632 perpendicular to it is driven on the first upper shell gantry 50631. The second upper shell gantry 50632 can drive the third upper shell gantry 50633 connected to it to achieve displacements in three directions for multi-degree-of-freedom processing operations.

[0058] After covering the outer shell on the stacked battery packs, the connection between the outer shell and the battery packs only relies on glue connection. Therefore, the stacked battery packs cannot be protected. So it is necessary to weld the docking edges of the outer shell to make the outer shell wrap all the battery packs and form 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 of transporting the soft-pack battery packs by the transport part 4.

[0059] The first welding assembly 6 is used to weld the joints between the top side plates and the top plate of the outer shell and the joints between the side plates and the bent parts, that is, to weld the three short sides of the top of the outer shell, as Figure 10As shown in the figure, the first welding assembly 6 includes two relatively arranged first lasers 6010 and two welding robotic arms for driving the corresponding first lasers 6010 to move. The two welding robotic arms are located on both sides of the first welding bed 601. One welding robotic arm is connected to one first laser 6010. It should be noted that the welding robotic arm is a commercially available product and is not shown in the figure. The models of the welding robotic arm 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 robotic arm are fixedly connected through the first mounting base 606. A flange 6012 for connecting with the welding robotic arm is fixedly connected to the first mounting base 606. The first laser is fixedly installed on the first mounting base 606. In this embodiment, a positioning imager 607 for photographing the soft-pack battery pack is fixedly arranged on the first mounting base 606. When the soft-pack battery pack moves to the working position of the first welding assembly 6, the positioning imager 607 collects the image of the soft-pack battery pack, and determines the initial welding position and the travel of the first laser 6010 through image recognition.

[0060] The first welding assembly 6 includes a first welding bed 601 for the carrier transport member 4 to transport the second clamping tray 12. Two relatively arranged welding brackets 602 are provided on the first welding bed 601. The two welding brackets 602 are arranged on both sides of the transport member 4. A seventh cylinder 603 is provided on the welding bracket 602. The seventh cylinder 603 is used to drive the first sliding seat 604 slidably arranged on the welding bracket 602. Side welding nozzles 605 are provided on the first sliding seat 604 along the transport direction of the transport member 4, and a top welding nozzle 6014 is provided on the top of the first sliding seat 604.

[0061] Specifically, two mutually parallel first slide rails are fixedly connected to the top of the welding bracket 602. Two first sliders capable of sliding 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 both driven by an eighth cylinder 608 for displacement to be used for welding the connection between the outer shell side plate and the bent portion. The two side welding nozzles 605 and the top welding nozzle 6014 are both communicated with a first exhaust pipe provided on the welding bracket 602 for exhausting gas.

[0062] 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 bending part, a fixed pressure plate 609 that can contact the shell side panel is slidably arranged 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. A sliding rod 6013 is vertically fixedly connected to the side of the fixed pressure plate 609 facing away from the side plate, 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 the number of push plates 6011 is two. The connection method between the push plate 6011 and the first sliding seat 604 is bolted connection. During the sliding process of the first sliding seat 604, the fixed pressure plate 609 can be pushed 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 facing 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.

[0063] 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 shell side plate to the end of the battery pack; then the eighth cylinder 608 will push the corresponding side welding nozzle 605 and the top welding nozzle 6014 to move toward the soft-pack battery pack, and then 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 to confirm 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.

[0064] like Figure 11 and Figure 12As shown, the flipping assembly 7 includes a flipping base 701 for carrying the transport member 4. Two oppositely arranged and openable and closable flipping jaws 707 are provided on the flipping base 701, and a flipping motor 706 for driving the jaws to rotate. A clamping area for clamping the soft-pack battery pack is formed between the two flipping jaws 707, and the flipping motor 706 corresponds to the flipping jaws 707 one by one. Specifically, the flipping assembly 7 further includes a flipping frame 702 fixedly connected to the flipping base 701. The flipping 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 flipping base 701. The connection mode between the vertical rod and the flipping base 701 is bolt connection; the horizontal rod is fixedly connected to the top ends of the two vertical rods, and the connection mode between the two is bolt connection. A flipping slide plate 705 is provided on the flipping frame 702. The flipping slide plate 705 is a rectangular plate-like structure and is horizontally arranged, and the flipping slide plate 705 is driven by a ninth cylinder 704 to slide up and down along the flipping frame 702. The piston of the ninth cylinder 704 is fixedly connected to the flipping slide plate 705; specifically, a first connecting plate is fixedly connected to the flipping frame 702, and the connection mode between the first connecting plate and the horizontal rod is bolt connection. The ninth cylinder 704 is fixedly installed on the first connecting plate. Two second slide rails are fixedly provided on the first connecting plate, and the second slide rails are vertically arranged; a second connecting plate is fixedly connected to the side of the flipping slide plate 705 close to the flipping frame 702, and two second sliders corresponding to the second slide rails one by one are fixedly provided on the second connecting plate, and the second sliders can slide along the second slide rails.

[0065] The two ends of the flip slide 705 are slidably connected with the second mounting plates 703 located below them. 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, the number of the second mounting plates 703 is two and they correspond to the flip clamps 707 one by one. A top pressure cylinder for driving the two to move relative to or away from each other is arranged between the two second mounting plates 703, and 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 first part arranged horizontally and a second part arranged vertically. The first part and the second part are fixedly connected, and the connection method of the two is bolt connection. The first part is used to connect with the flip slide 705, and the second part is used to connect with the flip clamp 707. In order to improve the stability of the second mounting plate 703, a reinforcing plate is fixedly arranged between the first part and the second part. The first part and the flip slide 705 are arranged in such a way that the first part is fixedly connected with a third slider, the lower surface of the flip slide 705 is fixedly connected with a third slide rail corresponding to the third slider, the piston end of the second cylinder 2064 is fixedly connected with 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 arranged in such a way that 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 the clamping blocks is pcs and they are evenly distributed along the circumference of the circular plate. The connection between the clamping blocks and the circular plate is bolted, and the circular plate is rotatably connected to the second part through 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 with a driving pulley, the rotating shaft is coaxially fixedly connected with a driven pulley, and the driving pulley and the driven pulley are driven by a belt.

[0066] 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 with a second limit plate, and a limit hole corresponding to the second limit plate is opened on the flip slide 705. The top of the second limit plate extends through the limit hole to above the flip slide 705, and a second limit plate fixedly connected to the flip slide 705 is arranged at the opening of the limit hole. The second limit plate and the flip slide 705 are connected by bolts.

[0067] The second clamping tray 12 includes a second clamping base plate with rollers at four corners, 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 is slidably matched 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, and 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.

[0068] The second opening and closing assembly 505 provided on the flipping base 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 flipping base 701, and an opening and closing movable plate 5051 is slidably arranged on the second opening and closing frame. The opening and closing movable plate 5051 is driven by opening and closing cylinders 5053 installed on the second opening and closing frame. The number of the opening and closing cylinders 5053 is two and they are located on both sides of the transport member 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 arranged on the opening and closing movable plate 5051. 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 formed in the movable clamping plate. Subsequently, the pulling cylinder 5052 will pull the hook plate to drive the movable clamping plate to move in a direction away from the soft-pack battery pack, and further pull the movable clamping plate to slide in a direction away from the fixed clamping plate against the elastic force of the clamping measurement spring 2063, thereby releasing the clamping of the second clamping tray 12 on the soft-pack battery pack.

[0069] The working process of the flipping assembly 7 is as follows. The soft-pack battery pack welded by the first welding assembly 6 is transported to the position of the flipping assembly 7. The ninth cylinder 704 drives the flipping slide plate 705 to move downward, and then drives the second mounting plate 703 and the flipping jaws 707 to move downward to the required position. The auxiliary clamping cylinder drives the two second mounting plates 703 to move relatively, and then drives the two flipping jaws 707 to move relatively. And the four clamping blocks on each flipping jaw 707 are respectively located at the four faces of the outer shell of the soft-pack battery pack until the soft-pack battery pack is fixed between the two flipping jaws 707. The opening and closing cylinder 5053 pushes the opening and closing movable plate 5051 to make the pulling cylinder 5052 move downward, and then will drive the hook plate to move downward, so that the hook plate enters the hook groove. Then the pulling cylinder 5052 pulls the hook plate to make the second clamping tray 12 slide in a direction away from the fixed clamping plate, releasing the clamping of the soft-pack battery pack. The ninth cylinder 704 drives the flipping slide plate 705 to move upward, and then drives the flipping jaws 707 and the soft-pack battery pack fixed between the two flipping jaws 707 to move upward, so that it moves out of the clamping space and is locked at the required position. The flipping motor 706 drives the flipping jaws 707 to rotate, so that the bottom plate of the soft-pack battery pack is located above and the top plate is located below. The ninth cylinder 704 drives the driving flipping slide plate 705 to move downward, driving the flipped soft-pack battery pack into the clamping space. The fourth cylinder drives the hook plate to move in the direction of the fixed clamping plate, so that the second clamping tray 12 clamps the soft-pack battery pack. Then the third cylinder drives the fourth mounting plate to move upward, so that the pulling plate slides out of the hook groove. The auxiliary clamping cylinder drives the two second mounting plates 703 to move away from each other, separating the flipping jaws 707 from the soft-pack battery pack, and then drives it to be located above the soft-pack battery pack through the ninth cylinder 704, completing the flipping of the soft-pack battery pack.

[0070] As Figure 13As shown, the second welding assembly 8 is used to weld the joints of the two long sides of the bottom plate and the bent part, as well as the joint of the bottom plate and the side plate of the housing. The second welding assembly 8 includes two relatively arranged second lasers and two welding robotic arms for driving the corresponding second lasers, which are not shown in the figure. The two welding robotic arms are located on both sides of the machine tool. One welding robotic arm is connected to one second laser. It should be noted that the welding robotic arm is a commercially available product and is not shown in the figure. The model of the welding robotic arm is FANUC M-iD or FANUC M-iD / , etc. In this embodiment, the second laser and the welding robotic arm are fixedly connected through a second mounting base. A corresponding flange 6012 for connecting with the welding robotic arm is fixedly connected to the second mounting base, and the second laser is fixedly installed on the second mounting base. A positioning image machine 607 for photographing the soft-pack battery pack is fixedly arranged on the second mounting base. When the soft-pack battery pack moves to the working station of the second welding assembly 8, the positioning image machine 607 collects the image of the soft-pack battery pack, and determines the initial welding position and the travel of the second laser through image recognition.

[0071] The second welding assembly 8 includes a second welding bed 801 for carrying and transporting the part 4. Two long-side welding frames 802 are provided on the second welding bed 801. Lifting cylinders 803 are provided at the tops of the two long-side welding frames 802. The lifting cylinders 803 can drive the displacement brackets 807 slidably arranged on the long-side welding frames 802. Two angle plates 804 are provided on the side of the displacement bracket 807 facing the transport part 4. Docking cylinders 806 are rotatably arranged on the two angle plates 804. Long-side welding nozzles 805 are provided at the tops of the two docking cylinders 806 to assist the second laser and the corresponding welding robotic arm in realizing the welding work of the long sides of the bottom of the housing. And the docking cylinders 806 can adjust the angles on the two angle plates 804, so as to adapt to the bottoms of different sizes of the housing and perform welding operations on the bottoms of the housing.

[0072] 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 housing, the top-side welding nozzle 6014 with the same design on the second welding bed 801 and the first welding bed 601 will correspond to the short side of the bottom of the housing, and at the same time, it will also press the housing to ensure the relative position during the housing welding process.

[0073] During the welding process of the pouch battery pack housing by the second welding assembly 8, when the transport member 4 conveys the pouch battery pack to the position of the corresponding welding jig 602, the corresponding top edge welding nozzle 6014 will cooperate with the corresponding fixed pressure plate 609 to correspond to the short side position at the bottom of the housing. At the same time, the distance adjustment cylinder 803 will drive the displacement bracket 807 to displace under the support of the long side welding frame 802. Subsequently, the displacement bracket 807 will drive the two docking cylinders 806 at corresponding angles to the corresponding positions through the angle plate 804, that is, to make the long side welding nozzle 805 correspond to the long side at the bottom of the housing. Next, the positioning image machine 607 collects the image of the pouch battery pack and transmits it to the control unit. The control unit identifies and confirms the initial welding position of the image and controls the welding robot arm to drive the second laser to weld in sequence. After the welding is completed, both the long side welding nozzle 805 and the short side welding nozzle will return to their original positions. Subsequently, the transport member 4 will drive the pouch battery pack into the detection assembly 9 to detect the welding quality of the housing.

[0074] The first opening and closing assembly 502 includes a carrier provided on the transmission member and a vertical telescopic member provided on the carrier. The vertical telescopic member can drive the longitudinal telescopic member connected to the vertical telescopic member. A driving member is provided on the longitudinal telescopic member. The driving member can be docked with the screw rod included in the tray. Specifically, the driving member is docked with the rotating disk provided at the end of the screw rod. After the operator adjusts, the driving member can be automatically controlled to be docked with the rotating disk, and the screw rod is driven to rotate forward and backward to open or close the clamping structure, so as to release or clamp the battery assembly for processing the battery assembly.

[0075] The bearing member includes a gantry fixed by a floor plate. Inside the gantry, there are two symmetrically arranged reinforcing beams to improve the structural stability of the gantry. On the outer side of the gantry, there are two vertically telescopic members, each of which includes a fourth bearing plate. On both of the two fourth bearing plates, telescopic cylinders are fixedly arranged. The telescopic ends of the two telescopic cylinders face the floor 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 move vertically under the support of the gantry. And on the gantry, there is a slide rail that slidably cooperates with the displacement frame to ensure the stability of the movement of the displacement frame. On the displacement frame, there is a longitudinally telescopic member including a driving plate. On the driving plate, a driving motor is fixedly arranged. On the output shaft of the driving motor, there is a control screw rod. The control screw rod is threadedly connected with a moving plate, and the moving plate slidably cooperates with an auxiliary guide rail arranged on the driving plate. On the moving plate, there is a driving member including a control motor. On the output shaft of the control motor, there is a matching disc. On the matching disc, a plurality of docking columns are evenly arranged. The plurality of docking columns can be docked with the docking holes opened on the rotating disc to drive the screw rod to rotate forward and backward. A positioning instrument is fixedly arranged on the moving plate corresponding to the docking columns. Specifically, the positioning instrument is a laser depth finder, which can cooperate with the electromechanical system to determine the moving position of the moving plate so that the docking columns and the docking holes can be stably docked and the relative positions of the docking columns and the docking holes can be maintained. The circle formed by the plurality of docking columns is docked with the plurality of docking holes annularly opened on the rotating disc, which is convenient for the operator to adjust the docking. The positioning instrument, the control motor, the driving motor and the telescopic cylinder can all be regulated by the electromechanical system. Specifically, how the electromechanical system is set up, controlled and debugged and applied should be understood as the prior art for the convenience of the operator to control after debugging. Both the control motor and the driving motor are forward and reverse stepping motors for the convenience of the electromechanical system to control.

[0076] The first clamping tray 11 has a rectangular bottom plate with guiding rollers provided at all four top corners. A pad elevation frame, a clamping assembly, and an auxiliary positioning assembly are provided on the bottom plate. The clamping assembly is located in the width direction of the pad elevation frame, while the auxiliary positioning assembly is located in the length direction of the pad elevation frame. A placement plate is fixedly provided at the top of the pad elevation frame. The placement plate can carry a battery assembly, including a soft-pack battery cell, and cooperate with the clamping assembly to clamp and position the soft-pack battery cell. The clamping assembly includes a fixed clamping jaw and a movable clamping jaw. The fixed clamping jaw is fixed to the bottom plate. Two adjusting sliding seats are provided at the bottom of the movable clamping jaw. The adjusting sliding seats are slidably engaged with auxiliary sliding rails on the bottom plate. A control screw rod threadedly connected to the movable clamping jaw is provided between the two adjusting sliding seats. Protective pads are provided on the opposite surfaces of the fixed clamping jaw and the movable clamping jaw. The protective pads are made of elastic rubber material to protect the surface of the soft-pack battery cell in the battery assembly during the process of the movable clamping jaw and the fixed clamping jaw clamping the battery assembly. The control screw rod can control the displacement of the movable clamping jaw, so that the distance between the movable clamping jaw and the fixed clamping jaw is convenient for the operator to operate. A docking wheel is fixedly provided at the end of the control screw rod passing through the movable clamping jaw and the corresponding bearing seat. The docking wheel can cooperate 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 positioning assembly includes a positioning plate provided on one side in the length direction of the placement plate. The positioning plate is vertically slidably provided on the bottom plate. Specifically, sliding strips are fixedly provided on both sides of the positioning plate along the width direction of the placement plate. The sliding strips are slidably provided on a sliding rail seat fixed to the bottom plate. Adjusting waist slots are provided on the positioning plate. A plurality of plug-in blocks are connected to the adjusting waist slots by screws, so as to facilitate the operator to adjust the positions of the plug-in blocks according to different processing conditions of the soft-pack battery. The plug-in blocks can be inserted between the bus bar and the soft-pack battery cell to position the distance between the bus bar and the soft-pack battery cell, align the length direction of the soft-pack battery cell to the designed position, and at the same time make the ear passing through the bus bar and bent in stable contact with the bus bar. The plug-in blocks can cooperate with a stabilizing block fixedly provided on the top surface of the positioning plate to form a clamping area to clamp and position the position of the bus bar. A power slot is provided at the center of the positioning plate. The power slot is inclined. A power column is slidably provided in the power slot. Specifically, a wear-resistant wheel is rotatably provided outside the power column to reduce the mutual friction when the power column slides in the power slot, so that the power column can easily slide in the power slot. The power column is fixedly connected with a pushing slide plate. The pushing slide plate is slidably provided on a support slide rail on the bottom plate, and a tightening screw rod is provided on the pushing slide plate. During specific use, the operator can drive the pushing slide plate to drive the power column and the wear-resistant wheel to displace in the power slot, and then cooperate with the inclined power slot to make the positioning plate stably vertically displace under the support of the sliding strips and the sliding rail seat. When the positioning plate vertically moves upward, the plug-in blocks will first be inserted between the bus bar and the soft-pack battery cell, and then guide the soft-pack battery cell and the bus bar to maintain a corresponding distance, and guide the soft-pack battery cell to displace to the designed position. As the positioning plate gradually rises, the bus bar will enter the clamping area to further position the position of the bus bar.After the positioning plate moves into place, the operator can rotate and tighten the screw so that the tightened screw presses against the bottom plate to stabilize the position of the positioning plate, thereby maintaining the processing stability of the subsequent soft-pack battery cells. After repeatedly operating the two auxiliary positioning components, the two busbars and multiple soft-pack battery cells can be positioned at the designed positions on the placement plate. Finally, the operator can operate the clamping component to clamp and position multiple soft-pack battery cells for subsequent processing of the battery components.

[0077] The cover plate member includes a pressing plate for covering the tops of multiple soft-pack battery cells. The pressing plate is provided with clamping holes that can be clamped with the clamping heads fixedly provided at the tops of the movable clamping claws and the fixed clamping claws to position its own position. At the same time, the clamping holes can also limit the positions of the fixed clamping claws and the movable clamping claws to maintain the stability of the fixed clamping claws and the movable clamping claws in positioning multiple soft-pack battery cells. On both sides in the length direction of the cover plate member, there are multiple positioning blocks and multiple auxiliary blocks. A positioning area for clamping the busbar can be formed between the positioning blocks and the auxiliary blocks, and the positioning area can cooperate with the clamping area to further stabilize the relative position of the busbar. The auxiliary blocks are connected to the mating waist slots opened on the pressing plate by screws to facilitate the operator to adjust the positions of the auxiliary blocks to adapt to the tabs of the soft-pack battery cells.

[0078] 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. Then the operator can move the movable clamping claws to expose enough space on the placement plate. Subsequently, the operator can place the corresponding number of soft-pack battery cells on the placement plate. Next, the operator can sequentially push the two auxiliary positioning components to stably position the busbars connected to the tabs of the soft-pack battery cells and at the same time stably place multiple soft-pack battery cells at the designed positions on the placement plate. After multiple soft-pack battery cells are clamped and positioned, the cover plate member can be placed on the tops of multiple soft-pack battery cells, and the clamping holes are clamped with the clamping heads provided at the tops of the fixed clamping claws and the movable clamping claws to further stabilize the relative positions of the fixed clamping claws and the movable clamping claws, that is, to stably clamp multiple soft-pack battery cells.

[0079] Such as Figure 14As shown in the figure, the detection component 9 includes a detection base 901 for carrying and transporting the component 4. A detection frame 902 is fixedly arranged on the detection base 901. The detection frame 902 is in the shape of a gantry. A detection cylinder 905 is fixedly arranged on the horizontal section of the detection frame 902. The detection cylinder 905 can drive the detection carrier 906 slidably arranged on the detection frame 902 to move vertically. Then, when the battery pack transported by the transport component 4 stops at the corresponding position, it drives the detection carrier 906 to move vertically upward, and after the battery pack detection is completed, it places the battery pack on the transport component 4 and then resets, so that the detected battery pack can be transported to the offline robotic arm 10 for grasping and putting into the box. A detection slide 904 is slidably arranged on the detection carrier 906 vertically facing the bottom of the transport component 4. The detection slide 904 can move closer to each other under the drive of the detection motor to press both sides of the battery pack. Four detection jaws 903 driven by a rotating member are arranged on the detection slide 904. The four detection 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 arranged on one side of the detection slide 904. The rotating motor drives the control cylinder for controlling the detection jaws 903 to rotate through a transmission belt, and an angle detector 1063 is arranged on the outer periphery of the control cylinder to make the control cylinder rotate in a positive and negative cycle. A weld observation head 907 is fixedly arranged on the detection carrier 906 corresponding to the center of the transport component 4. When the rotating member drives the detection cylinder 905 to make the detection jaws 903 drive the battery pack to rotate, it is used to detect the weld of the battery pack housing, thereby ensuring the ability of the housing to protect the battery pack. During the rotation of the battery pack, the angle detector 1063 can control the rotating motor, which is a stepping motor, to rotate a corresponding angle, thereby improving the quality of the weld observation head 907 photographing the housing weld, that is, improving the accuracy of the housing welding quality detection. After the detection is completed, the transport component 4 will transport the processed battery pack to the working range of the offline robotic arm 10, so that the offline robotic arm 10 can grasp and place it into the transfer box for subsequent transportation. The transport component 4 is a structure composed of two chains driven by two sprockets arranged at intervals. How the specific transport component 4 operates and is controlled should be understood as the prior art.

[0080] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various deformations 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 and welding device, characterized in that: It has a transport member (4) capable of transporting the first clamping tray (11) and the second clamping tray (12). The transport member (4) is successively provided with an ear welding assembly (1), a measurement assembly (2), an upper shell assembly (5), a first welding assembly (6), a flipping assembly (7), a second welding assembly (8), a detection assembly (9), and a offline robotic arm (10) to complete the welding of the battery pack ears and the installation of the outer shell; 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) capable of opening the first clamping tray (11) and a second opening and closing assembly (505) capable of opening the second clamping tray (12). 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 undergone ear treatment in the first clamping tray (11) into the second clamping tray (12) and clamp it; The tray changing member (503) includes a tray changing gantry (5032) provided on the upper shell base (501). The tray changing gantry (5032) can drive the first clamping claw (5031) capable of clamping and placing the battery pack and move along the transport direction of the transport member (4); The first clamping tray (11) clamps the battery pack through a lead screw-nut pair structure, and the second clamping tray (12) clamps and positions the battery pack by elastic structure pressing.

2. The soft-pack battery assembly and welding device according to claim 1, wherein: The ear welding assembly (1) includes a fixing frame (101) for carrying the transport member (4). A distributing member (103) perpendicular to the transport member (4) is provided on the fixing frame (101) to transport the first clamping tray (11) and the battery pack transported by the transport member (4) to the ear welding nozzle (1065), and cooperate with the laser welding member (1055) provided on the fixing frame (101) to cooperate with the ear welding nozzle (1065) to weld the battery pack ears.

3. The soft-pack battery assembly and welding device according to claim 1, wherein: The measurement assembly (2) includes a frame (201) for carrying the transport member (4). A first detection mechanism (202), a differential pressure detection member (205), and a DCIR detection member (206) are successively provided on the frame (201) along the transport direction of the transport member (4). The first detection mechanism (202) includes a camera (2021) provided on the frame (201) to detect the welding quality of the battery pack ears after welding treatment.

4. The soft-pack battery assembly and welding device according to claim 3, wherein: A shadowless plate (203) corresponding to the camera (2021) is provided on the frame (201). The shadowless plate (203) is a light-transmitting plate with a light source inside.

5. The soft-pack battery assembly and welding device according to claim 1, characterized in that: A recycling station (504) is provided on the upper shell base (501) corresponding to the first opening and closing assembly (502) to recycle the first clamping tray (11). Two feeding members (506) perpendicular to the transport member (4) are provided on the upper shell base (501) to put the bottom of the outer shell into the second clamping tray (12) in advance by the outer shell pre-tray changing member (503), and can cover the top of the outer shell around the battery pack.

6. The soft-pack battery assembly and welding device according to claim 1, wherein: The first welding assembly (6) includes a first welding bed (601) for carrying the transport member (4). On the first welding bed (601), there are provided a side welding nozzle (605) and a top edge welding nozzle (6014) that can move correspondingly to the side and top edges of the outer shell, so as to cooperate with the first laser (6010) driven by the welding robot arm to weld the top of the outer shell.

7. The soft-pack battery assembly and welding device according to claim 1, characterized in that: The flipping assembly (7) includes a flipping frame (702) for carrying the transport member (4). On the flipping frame (702), there are provided a second opening and closing assembly (505) and a flipping jaw (707) for gripping and releasing the battery pack and the outer shell. The second opening and closing assembly (505) is used to open the second clamping tray (12) for the flipping jaw (707) to grip the battery pack, and the flipping jaw (707) is driven by a ninth cylinder (704) and a flipping motor (706) provided on the flipping frame (702) to flip the battery pack and the outer shell and then reset.

8. The soft-pack battery assembly and welding device according to claim 1, wherein: The second welding assembly (8) includes a second welding bed (801) for carrying the transport member (4). On the second welding bed (801), there are provided a movable top edge welding nozzle (6014) and a long edge welding nozzle (805) to cooperate with the second laser driven by the welding robot arm to weld the bottom of the outer shell.

9. The soft-pack battery assembly and welding device according to claim 1, wherein: The detection assembly (9) includes a detection base (901) for carrying the transport member (4). On the detection base (901), there are provided a second opening and closing assembly (505) and a detection jaw (903) that can grip and release the outer shell. After the second opening and closing assembly (505) opens the second clamping tray (12), the detection jaw (903) can flip the outer shell under the drive of a detection cylinder (905) and a rotating member provided on the detection base (901) to cooperate with a weld seam observation head (907) provided corresponding to the transport member (4) to detect the welding quality of the outer shell.

10. A method for assembling and welding a soft-pack battery, characterized in that: Using the tab welding assembly (1) included in a soft-pack battery assembly and welding device according to any one of claims 1-9 to perform tab welding, and after the tab welding is completed, replacing the first clamping tray (11) and the second clamping tray (12) and covering the outer shell, and then using the first welding assembly (6), the flipping assembly (7) and the second welding assembly (8) to perform the welding process of the battery pack.

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