A lead-acid battery pole group wrapping clamp device and a down-slot machine all-in-one machine

Abstract

This invention belongs to the technical field of lead-acid battery production equipment, specifically relating to an integrated lead-acid battery electrode packing clamping device and a slotting machine. This invention aims to solve problems in existing technologies such as the inability to adjust clamping force in real time during electrode packing, the separation of detection and clamping, and the susceptibility of external sensors to dust interference. The clamping unit has a first clamping component and a second clamping component along the horizontal direction, each equipped with a pressure detection structure. The pressure detection structure can acquire the clamping force information of the first and second clamping components on the electrode pack. The motion control mechanism includes an X-axis translation component, a vertical lifting component, and a rotation component, capable of controlling the horizontal movement, vertical lifting, and rotation around the vertical axis of the clamping mechanism. This invention achieves independent adjustment and real-time detection of the clamping force, simultaneously completing pressure and thickness detection at the clamping station, possessing online full inspection capability, and effectively intercepting defective electrode packs.

Description

Technical Field

[0001] This invention belongs to the technical field of lead-acid battery production equipment, and specifically relates to an integrated machine for clamping lead-acid battery electrode packs and unloading the battery. Background Technology

[0002] In lead-acid battery production, the pre-installation of electrode clusters is a core process, where electrode clusters are formed by clamping the electrode plates and AGM separators. The assembly pressure of the electrode clusters directly affects the AGM separator compression and the battery's electrochemical performance. Thickness parameters can determine whether electrode plates or AGM separators are missing or over-installed. These two indicators are crucial for ensuring battery performance consistency and cycle life. The industry urgently needs to implement full-scale online inspection of electrode clusters to intercept defective products in real time and avoid batch quality problems.

[0003] Existing technologies mostly employ integrated slotting machines with rigid clamping structures, relying on manual, timed offline sampling inspections of assembly pressure, lacking online full inspection capabilities. Some improved equipment adds an independent inspection station, using external pressure and weighing sensors for testing. However, these solutions have the following drawbacks: clamping force cannot be adjusted in real time; sampling inspection is delayed; defective products easily flow into subsequent processes; existing technologies typically rely on external sensors, which leads to redundant equipment structures and susceptibility to interference from dusty workshop environments; clamping and inspection are performed in separate steps, affecting production cycle time; pressure and thickness testing cannot be simultaneously completed at the clamping station, creating blind spots in control and hindering full inspection and defective product interception. Summary of the Invention

[0004] The present invention aims to provide an integrated device for clamping lead-acid battery electrode packs and a slotting machine, which is mainly used to solve the problem of judging whether there are missing or extra plates and AGM separators in the electrode packs in the existing technology, so as to prevent defective electrode packs from flowing into the subsequent processes, thereby effectively preventing batch quality problems and ensuring battery performance consistency and cycle life.

[0005] In a first aspect, the present invention provides an integrated machine for clamping lead-acid battery electrode packs and a slotting machine, comprising: frame; A clamping mechanism is provided, comprising a clamping base, with a first rotary drive and a second rotary drive respectively at both ends of the clamping base; a first lead screw and a second lead screw are rotatably disposed within the clamping base, the output end of the first rotary drive and the output end of the second rotary drive are drivenly connected to the first lead screw; at least one clamping unit is provided within the clamping base, the clamping unit having a first clamping assembly and a second clamping assembly arranged horizontally, the first clamping assembly being drivenly connected to the first lead screw, and the second clamping assembly being drivenly connected to the second lead screw; pressure detection structures are respectively provided on the first clamping assembly and the second clamping assembly; the pressure detection structures are capable of acquiring information on the clamping force of the first clamping assembly and the second clamping assembly on the electrode group; A motion control mechanism is provided, which is mounted on the frame. The motion control mechanism includes an X-axis translation component, a vertical lifting component, and a rotation component. The X-axis translation component can control the vertical lifting component to reciprocate in the horizontal direction, the vertical lifting component can control the rotation component to reciprocate in the vertical direction, and the rotation component can control the clamping mechanism to rotate around the vertical axis.

[0006] According to some embodiments of the present invention, the first clamping assembly and the second clamping assembly are respectively provided with a fixing plate and a clamping plate. The fixing plate is provided with a mounting hole and a clearance hole. A lead screw nut is provided in the mounting hole. The lead screw nut is drivenly connected to the first lead screw / second lead screw. The clearance hole is clearance-fitted with the second lead screw / first lead screw. The fixing plate is provided with a sliding groove. The upper end of the clamping plate is provided with a sliding part. The sliding part is slidably connected to the sliding groove in the horizontal direction. The lower end of the clamping plate is provided with a clamping part.

[0007] According to some embodiments of the present invention, the pressure detection structure includes a mandrel, a sleeve, an elastic pad, a first coil and two second coils; the mandrel is slidably disposed in the groove in the horizontal direction, the sleeve is embedded in the sliding part, and the sleeve and the mandrel are slidably connected; the first coil and the two second coils are respectively wound around the outer peripheral wall of the sleeve, and the two second coils are respectively arranged on both sides of the first coil in the axial direction.

[0008] According to some embodiments of the present invention, the mandrel is made of a soft magnetic material with high permeability, and the sleeve is made of a non-metallic material.

[0009] According to some embodiments of the present invention, the clamping mechanism further includes four first guide rods, which are distributed around the periphery of the first lead screw / second lead screw, and the clamping unit is slidably connected to the four first guide rods respectively.

[0010] According to some embodiments of the present invention, the clamping base is provided with N partitions, the N partitions divide the clamping base into N-1 mounting cavities, and each mounting cavity is provided with one clamping unit, wherein N≥2.

[0011] According to some embodiments of the present invention, the X-axis translation assembly includes a first guide rail, a horizontal plate, a third lead screw, and a third rotary drive; the first guide rail is fixedly connected to the frame, the horizontal plate is slidably connected to the first guide rail, the third rotary drive is fixedly connected to the frame, the output end of the third rotary drive is drive-connected to the third lead screw, and the third lead screw is drive-connected to the horizontal plate.

[0012] According to some embodiments of the present invention, the vertical lifting assembly includes a linear drive, a second guide shaft, a linear bushing, and a limiting plate. The linear drive is fixedly connected to the horizontal plate, and the output end of the linear drive passes through the horizontal plate and is hinged to the rotary assembly. The second guide shaft is slidably connected to the horizontal plate through the linear bushing. The upper end of the second guide shaft is fixedly connected to the limiting plate, and the lower end of the second guide shaft is fixedly connected to the rotary assembly.

[0013] According to some embodiments of the present invention, the rotary assembly includes a fourth rotary drive and a motor mounting bracket, the upper end of the motor mounting bracket is hinged to the output end of the linear drive, the fourth rotary drive and the motor mounting bracket are fixedly connected, and the output end of the fourth rotary drive is fixedly connected to the clamping mechanism.

[0014] Secondly, the present invention provides an integrated sinking machine, including a first conveyor belt, a second conveyor belt, and a sinking mechanism. The sinking mechanism is disposed on the frame. The first conveyor belt is located below the sinking mechanism and is used to convey battery boxes with assembled electrode groups. The second conveyor belt is disposed on the frame and is used to convey electrode groups. The lead-acid battery electrode group clamping device is located between the second conveyor belt and the sinking mechanism and is used to feed the electrode groups into the sinking mechanism.

[0015] According to an embodiment of the present invention, a lead-acid battery electrode pack clamping device and a sinking machine integrated machine have at least the following beneficial effects: According to the present invention, the clamping mechanism integrates a first rotary drive, a first lead screw, a second rotary drive, and a second lead screw. The movement of the first clamping assembly and the second clamping assembly are controlled by two independent rotary drives. This design allows for independent adjustment and precise control of the clamping force on both sides of the pole group, avoiding the imbalance problem caused by the coupling of clamping forces on both sides under a single-drive structure.

[0016] According to the present invention, the pressure detection structure is disposed on the first clamping assembly and the second clamping assembly, which can detect the clamping force in real time while the clamping action occurs. This eliminates the need for external sensors or additional detection stations, reducing structural redundancy and mitigating the impact of dusty workshop environments on detection accuracy.

[0017] According to the present invention, the motion control mechanism includes an X-axis translation component, a vertical lifting component, and a rotation component, which can control the horizontal movement, vertical lifting, and rotation around the vertical axis of the clamping mechanism. With three degrees of freedom, this structure can meet the needs of group handling between different workstations and achieve directional adjustment during handling, thus improving the coordination of production cycle.

[0018] According to the present invention, at least one clamping unit is provided within the clamping base, and each clamping unit is independently configured with a first clamping component and a second clamping component. Multiple clamping units can operate synchronously, realizing simultaneous clamping and detection of multiple pole groups, thereby improving detection efficiency.

[0019] According to the present invention, since clamping and pressure detection are completed synchronously at the same station, and the first and second rotary drives can adjust the clamping force in real time based on the feedback from the pressure detection structure, this solution has online full inspection capability. Compared with manual timed sampling inspection, it can intercept defective products in real time, preventing defective electrode groups from flowing into subsequent processes, thereby ensuring battery performance consistency and cycle life.

[0020] According to the solution of the present invention, the integrated tank lowering machine used in this solution has a compact structure and all mechanisms adopt a modular design, which facilitates daily maintenance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0022] Figure 1 This is a schematic diagram of a structure of the integrated troughing machine of the present invention; Figure 2 This is a schematic diagram of the clamping mechanism and motion control mechanism of the present invention; Figure 3 This is a schematic diagram of the clamping mechanism and rotating assembly of the present invention; Figure 4 This is a schematic diagram of one structure of the clamping mechanism of the present invention; Figure 5 This is a schematic diagram of a structure of the first clamping component of the present invention; Figure 6This is a schematic diagram of the sleeve and coil assembly of the present invention.

[0023] The reference numerals in the accompanying drawings include: 100-rack; 200-Clamping mechanism, 201-Clamping unit, 210-Clamping base, 211-First lead screw, 212-Second lead screw, 220-First rotary drive, 230-Second rotary drive, 240-First clamping assembly, 241-Fixing plate, 242-Clamping plate, 243-Mounting hole, 244-Leaning hole, 245-Lead screw nut, 246-Slide groove, 247-Sliding part, 248-Clamping part, 250-Second clamping assembly, 260-Pressure detection structure, 261-Mandrel, 262-Sleeve, 263-Elastic pad, 264-First coil, 265-Second coil, 270-First guide rod, 280-Partition plate; 300-Motion control mechanism, 310-X-axis translation component, 311-First guide rail, 312-Horizontal plate, 313-Third lead screw, 314-Third rotary drive, 320-Vertical lifting component, 321-Linear drive, 322-Second guide shaft, 323-Linear bushing, 324-Limit plate, 330-Rotation component, 331-Fourth rotary drive, 332-Motor mounting bracket; 400 - First conveyor belt, 500 - Second conveyor belt, 600 - Inlet mechanism. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "top surface," "bottom surface," "inner," "outer," "inner side," and "outer side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Where the terms "first," "second," and "third" are used for descriptive purposes and to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The embodiments of this invention will now be described according to its overall structure.

[0028] Reference Figures 2 to 6 As shown, in a first aspect, the present invention discloses a lead-acid battery electrode pack clamping device, including a frame 100, a clamping mechanism 200, and an action control mechanism 300. The clamping mechanism 200 is provided with a clamping base 210, and a first rotary drive 220 and a second rotary drive 230 are respectively provided at both ends of the clamping base 210; a first lead screw 211 and a second lead screw 212 are rotatably disposed within the clamping base 210, the output end of the first rotary drive 220 is driveably connected to the first lead screw 211, and the output end of the second rotary drive 230 is driveably connected to the second lead screw 212; at least one clamping unit 201 is provided within the clamping base 210, and the clamping unit 201 is provided with a first clamping assembly 240 and a second clamping assembly 250 arranged horizontally, the first clamping assembly 240 being driveably connected to the first lead screw 211, and the second clamping assembly 250 being driveably connected to the second lead screw 212. The transmission connection is as follows: pressure detection structures 260 are respectively provided on the first clamping assembly 240 and the second clamping assembly 250; the pressure detection structures 260 can obtain information on the clamping force of the first clamping assembly 240 and the second clamping assembly 250 on the pole group; the motion control mechanism 300 is provided on the frame 100, and the motion control mechanism 300 is provided with an X-axis translation assembly 310, a vertical lifting assembly 320 and a rotation assembly 330; the X-axis translation assembly 310 can control the vertical lifting assembly 320 to reciprocate in the horizontal direction, the vertical lifting assembly 320 can control the rotation assembly 330 to reciprocate in the vertical direction, and the rotation assembly 330 can control the clamping mechanism 200 to rotate around the vertical axis.

[0029] Reference Figure 2As shown, specifically, in this technical solution, the frame 100 serves as the mounting base for the entire device, supporting the clamping mechanism 200 and the motion control mechanism 300. The motion control mechanism 300, mounted on the frame 100, includes an X-axis translation component 310, a vertical lifting component 320, and a rotation component 330. The X-axis translation component 310 controls the vertical lifting component 320 to reciprocate horizontally, the vertical lifting component 320 controls the rotation component 330 to reciprocate vertically, and the rotation component 330 controls the clamping mechanism 200 to rotate around its vertical axis. This design enables the clamping mechanism 200 to possess three degrees of freedom of motion, meeting the needs of cross-station material handling and orientation adjustment, avoiding cycle time losses caused by manual transfer or additional handling devices, and providing a motion foundation for fully automated online detection. The clamping mechanism 200 is equipped with a clamping base 210. A first rotation drive 220 and a second rotation drive 230 are respectively mounted at both ends of the clamping base 210. The clamping base 210 has a first lead screw 211 and a second lead screw 212 rotatably mounted inside. The output end of the first rotary drive 220 is driven by the first lead screw 211, and the output end of the second rotary drive 230 is driven by the second lead screw 212. By controlling the two lead screws with two independent rotary drives, the horizontal movement of the first clamping assembly 240 and the second clamping assembly 250 can be controlled respectively. The clamping base 210 has at least one clamping unit 201. The clamping unit 201 has a first clamping assembly 240 and a second clamping assembly 250 mounted horizontally. The first clamping assembly 240 is driven by the first lead screw 211, and the second clamping assembly 250 is driven by the second lead screw 212. Pressure detection structures 260 are respectively provided on the first clamping assembly 240 and the second clamping assembly 250. During operation, the first rotary drive 220 rotates the first lead screw 211, thereby driving the first clamping assembly 240 to move horizontally; the second rotary drive 230 rotates the second lead screw 212, thereby driving the second clamping assembly 250 to move horizontally. The first clamping assembly 240 and the second clamping assembly 250 move towards each other to clamp the electrode group. Since the first rotary drive 220 and the second rotary drive 230 are independent of each other, the clamping force on both sides can be precisely controlled separately, avoiding uneven force on both sides caused by mechanical transmission deviation under a single drive structure, thus ensuring the consistency of electrode group assembly pressure. The pressure detection structure 260 is directly installed on the first clamping assembly 240 and the second clamping assembly 250, and can acquire the clamping force information of the first clamping assembly 240 and the second clamping assembly 250 on the electrode group in real time while the clamping action occurs. This integrated design eliminates the need for external sensors or independent detection stations, reducing structural redundancy. Meanwhile, the pressure detection structure 260 moves with the clamping assembly, and the detection can be completed at the clamping station without taking up extra production time.Compared to existing technologies that separate clamping and inspection, this solution achieves simultaneous clamping and pressure detection, improving inspection efficiency. Because the clamping mechanism 200 has a built-in pressure detection structure 260, and the motion control mechanism 300 can move the clamping mechanism 200 to any target station, this solution can perform online full-scale inspection of assembly pressure and total electrode thickness during the clamping process of each batch of electrode groups. Furthermore, it can determine whether there are any missing or extra electrode plates or AGM separators in the electrode group, preventing defective electrode groups from flowing into subsequent processes, thereby effectively preventing batch quality problems and ensuring battery performance consistency and cycle life.

[0030] Reference Figure 3 and Figure 4 As shown, the first clamping assembly 240 and the second clamping assembly 250 are respectively provided with a fixing plate 241 and a clamping plate 242. The fixing plate 241 is provided with a mounting hole 243 and a clearance hole 244. A lead screw nut 245 is provided in the mounting hole 243. The lead screw nut 245 is connected to the first lead screw 211 / second lead screw 212. The clearance hole 244 is clearance-fitted with the second lead screw 212 / first lead screw 211. The fixing plate 241 is provided with a sliding groove 246. The upper end of the clamping plate 242 is provided with a sliding part 247. The sliding part 247 is slidably connected to the sliding groove 246 in the horizontal direction. The lower end of the clamping plate 242 is provided with a clamping part 248.

[0031] Reference Figure 3 and Figure 4As shown, specifically, in this technical solution, the first clamping assembly 240 and the second clamping assembly 250 are respectively provided with a fixing plate 241 and a clamping plate 242. The fixing plate 241 is provided with a mounting hole 243 and a clearance hole 244. A lead screw nut 245 is provided in the mounting hole 243, and the lead screw nut 245 is connected to the first lead screw 211 or the second lead screw 212. The clearance hole 244 is clearance-fitted with the second lead screw 212 or the first lead screw 211. This structure ensures that the first lead screw 211 and the second lead screw 212 in the same clamping unit 201 do not interfere with each other: one lead screw drives the fixing plate 241 on this side through the lead screw nut 245, while the other lead screw passes through the clearance hole 244 on this side without generating a transmission relationship, thereby ensuring the independent movement of the clamping assemblies on both sides. The fixing plate 241 is provided with a sliding groove 246, and the upper end of the clamping plate 242 is provided with a sliding part 247. The sliding part 247 is slidably connected to the slide groove 246 in the horizontal direction. A clamping part 248 is provided at the lower end of the clamping plate 242. This sliding connection structure allows the clamping plate 242 to move smoothly in the horizontal direction under the guidance of the fixed plate 241, while allowing the clamping part 248 to make minor adaptive adjustments based on the actual surface position when contacting the electrode group, avoiding uneven clamping force distribution due to mechanical assembly errors. A pressure detection structure 260 can be arranged between the fixed plate 241 and the clamping plate 242 to directly sense pressure during clamping, further improving detection accuracy. Through this design, while maintaining independent drive, the flexibility and centering of the clamping assembly are enhanced, which is conducive to achieving stable and reliable electrode group clamping and pressure detection.

[0032] Reference Figure 5 and Figure 6As shown, the pressure detection structure 260 includes a spindle 261, a sleeve 262, an elastic pad 263, a first coil 264, and two second coils 265. The spindle 261 is slidably disposed in a groove 246 in the horizontal direction, and the sleeve 262 is embedded in a sliding part 247, with the sleeve 262 and the spindle 261 slidably connected. The first coil 264 and the two second coils 265 are respectively wound around the outer peripheral wall of the sleeve 262, with the two second coils 265 respectively arranged on both sides of the axial direction of the first coil 264. Specifically, when the first clamping assembly 240 or the second clamping assembly 250 clamps the pole group, the clamping force on the clamping plate 242 is transmitted to the sleeve 262 through the sliding part 247, and then acts on the spindle 261 through the elastic pad 263, pushing the spindle 261 to move axially along the sleeve 262. The displacement of the spindle 261 changes the magnetic coupling state between the first coil 264 and the two second coils 265. The first coil 264 is energized with an AC excitation signal, and the two second coils 265 are connected in reverse series. The output voltage difference changes linearly with the displacement of the mandrel 261. By detecting this voltage difference, the displacement of the mandrel 261 can be deduced, and then the clamping force information can be obtained by combining it with the stiffness characteristics of the elastic pad 263. Specifically, during the clamping process, the first clamping assembly 240 and the second clamping assembly 250 directly contact the left and right surfaces of the pole group. The encoder or pulse counting device of the drive system records the number of rotations of the first rotary drive 220 and the second rotary drive 230. After converting the number of rotations through the lead screw, the absolute horizontal position of the first clamping assembly 240 and the second clamping assembly 250 can be obtained. The theoretical total distance between the two clamping parts 248 can be calculated from the difference between the absolute horizontal position of the first clamping assembly 240 and the absolute horizontal position of the second clamping assembly 250. It should be understood that this theoretical total distance is not the actual thickness of the pole group, because the elastic pad 263 in the pressure detection structure 260 will undergo elastic compression during the clamping process. Specifically, the clamping force is transmitted to the sliding part 247 through the clamping plate 242, and then acts on the elastic pad 263 through the sleeve 262, pushing the mandrel 261 to move axially along the sleeve 262. The displacement of the mandrel 261 is detected by a differential transformer composed of the first coil 264 and two second coils 265. This displacement reflects the amount of compression deformation of the elastic pad 263 under the current clamping force. Since the elastic pad 263 is located on the force transmission path between the fixed plate 241 and the clamping plate 242, the displacement of the mandrel 261 is equal to the elastic relief of the clamping plate 242 relative to the fixed plate 241 in the direction of the clamping force. When calculating the pole group thickness, the elastic relief on both sides needs to be subtracted from the theoretical total distance between the two clamping parts 248. The elastic relief amount on the first clamping assembly 240 side is determined by the spindle displacement in the pressure detection structure 260 on this side, and the elastic relief amount on the second clamping assembly 250 side is determined by the spindle displacement in the pressure detection structure 260 on the other side.Therefore, the actual thickness of the pole group is equal to the theoretical total spacing minus the elastic relief on the first clamping component 240 side, and then minus the elastic relief on the second clamping component 250 side.

[0033] To obtain the electrode group thickness under standard assembly pressure, the clamping position is continuously adjusted by the first rotary drive 220 and the second rotary drive 230, while the clamping force information output by the pressure detection structures 260 on both sides is monitored in real time. When the clamping force of the first clamping assembly 240 and the second clamping assembly 250 on the electrode group reaches the preset standard value, the theoretical total distance and the displacement of the mandrels on both sides at the current moment are recorded, and the actual thickness of the electrode group under the standard pressure is calculated according to the above method. This thickness value can be used to determine whether the electrode group meets the assembly size requirements, and in conjunction with the weight parameters, to comprehensively evaluate the assembly quality of the electrode plate and the separator.

[0034] In this technical solution, for the single-sided clamping assembly, the elastic pad 263 in the pressure detection structure 260 undergoes compressive deformation under the clamping force, causing the mandrel 261 to displace axially along the sleeve 262. This displacement is detected and calculated by a differential transformer composed of the first coil 264 and two second coils 265. The single-sided clamping force and the displacement of the mandrel 261 satisfy a linear elastic relationship, and the calculation formula is as follows: F i =k Δx i ; Among them, F i Δx is the clamping force applied by the i-th side clamping assembly to the pole group, in N; K is the equivalent axial stiffness of the elastic pad 263, in N / m; i For the i-th side, the axial displacement of the mandrel 261 relative to the sleeve 262, in meters, is calculated from the differential transformer output voltage using a calibration curve. The clamping assemblies on both sides are detected independently; therefore, i=1, 2, corresponding to the first clamping assembly 240 side and the second clamping assembly 250 side, respectively. The total clamping force is the sum of the clamping forces on both sides, but the actual clamping force on the pole group is provided by each side individually; normally, the clamping forces on both sides are equal.

[0035] The actual thickness of the electrode group is obtained by subtracting the compression displacement of the elastic pads on both sides from the total distance between the two clamping parts 248. The total distance is calculated by converting the lead screw rotation angle, and the calculation formula is as follows: L = L0 - (S1 + S2); Wherein, L is the actual total distance between the inner side of the first clamping component 240 and the inner side of the second clamping component 250 in the clamping state, in meters; L0 is the distance between the inner sides of the first clamping component 240 and the second clamping component 250 in the initial state when the first clamping component 240 and the second clamping component 250 are not in contact, in meters, determined by the mechanical installation dimensions; S1 is the actual moving distance driven by the lead screw of the first clamping component 240, in meters; and S2 is the actual moving distance driven by the lead screw of the second clamping component 250, in meters.

[0036] Actual travel distance S driven by the lead screw i The number of rotations N driven by the corresponding rotary motion i With lead P of the lead screw h The calculation formula is: S i =N i P h ; Ni is the number of rotations of the first rotary drive 220 or the second rotary drive 230, which is read by the encoder.

[0037] The actual formula for calculating the thickness H of the pole group is: H = L - (Δx1 + Δx2); Substituting the formula for calculating L, we get: H = L0 - (S1 + S2) - (Δx1 + Δx2); It should be noted that Δx1 and Δx2 are both positive values. When it is necessary to obtain the thickness of the pole group under standard assembly pressure, F1 and F2 need to be monitored in real time. When the clamping forces on both sides reach the preset standard value, the values ​​of S1, S2, Δx1, and Δx2 at this time are read and substituted into the thickness calculation formula.

[0038] This design utilizes a non-contact electromagnetic induction principle between the coil and the mandrel, eliminating mechanical friction losses and ensuring long-term stability. The first coil 264 and two second coils 265 are coaxially arranged, with the two second coils 265 symmetrically distributed on both sides of the first coil 264, forming a differential structure. This effectively compensates for temperature drift and environmental interference, improving detection accuracy. The entire pressure detection structure 260 is integrated within the sleeve 262 and the slide groove 246, with no exposed sensitive elements, making it insensitive to dusty workshop environments and reducing the risk of detection failure due to dust contamination. The displacement of the mandrel 261 is linearly related to the clamping force, facilitating signal processing and real-time feedback. It can be used in conjunction with the first rotary drive 220 and the second rotary drive 230 to achieve closed-loop control of the clamping force.

[0039] As a further improvement, the pressure detection structure 260 is equipped with two sets of mandrels 261 and two sets of sleeves 262. This redundant design ensures that if one set of mandrels 261 or sleeves 262 experiences mechanical jamming, wear, or coil failure, the other set can still function normally, preventing the loss of clamping force information due to the failure of a single sensor. The two sets of signals can be cross-checked, ensuring real-time measurement consistency and improving the reliability of the detection system. In dusty workshop environments, the redundant structure allows for periodic switching or comparative calibration, extending the overall lifespan and reducing maintenance downtime. Sensor drift can be determined by comparing the two sets of data without the need for external calibration fixtures, ensuring the accuracy of long-term online detection.

[0040] As a further improvement, the mandrel 261 is made of a high-permeability soft magnetic material, and the sleeve 262 is made of a non-metallic material. Specifically, in this technical solution, the mandrel 261 can be made of materials such as nickel-iron alloy or high-sensitivity amorphous alloy. The sleeve 262 can be made of special engineering plastics or ceramics. In this technical solution, the sleeve 262 can be fixed in the sliding part 247 with epoxy resin or silicone.

[0041] As a further improvement, the clamping mechanism 200 also includes four first guide rods 270, which are distributed around the first lead screw 211 / second lead screw 212. The clamping unit 201 is slidably connected to each of the four first guide rods 270. Specifically, in this technical solution, the four first guide rods 270 are distributed around the lead screws, forming multi-point support and guidance, which significantly improves the straightness and anti-eccentric load capacity of the clamping assembly during movement, and avoids jamming due to asymmetrical clamping force.

[0042] As a further improvement, the clamping base 210 is provided with N partitions 280, which divide the clamping base 210 into N-1 mounting cavities. Each mounting cavity contains one clamping unit 201, where N ≥ 2. Specifically, in this technical solution, four partitions 280 are provided, forming three mounting cavities for accommodating three clamping units 201. By setting the partitions 280, the clamping units 201 can be limited in position.

[0043] As a further improvement, the X-axis translation component 310 includes a first guide rail 311, a horizontal plate 312, a third lead screw 313, and a third rotary drive 314. The first guide rail 311 is fixedly connected to the frame 100, the horizontal plate 312 is slidably connected to the first guide rail 311, the third rotary drive 314 is fixedly connected to the frame 100, the output end of the third rotary drive 314 is driveably connected to the third lead screw 313, and the third lead screw 313 is driveably connected to the horizontal plate 312. Specifically, in this technical solution, the third rotary drive 314 drives the third lead screw 313 to rotate, and the third lead screw 313 drives the horizontal plate 312 to reciprocate along the first guide rail 311 in the horizontal direction. The horizontal plate 312 serves as the mounting base for the vertical lifting component 320, and its movement is directly transmitted to the vertical lifting component 320, thereby driving the clamping mechanism 200 to achieve X-axis displacement. The transmission method employing a third lead screw 313 and a third rotary drive 314, combined with the guidance of the first guide rail 311, achieves high translational positioning accuracy and smooth movement, meeting the precise positioning requirements of the clamping mechanism 200 between different workstations. The third rotary drive 314 is fixedly connected to the frame 100, while the horizontal plate 312 is slidably connected to the first guide rail 311, resulting in a compact structure that is easy to maintain. This entire assembly is independent of the vertical lifting assembly 320 and the rotary assembly 330, achieving modularity of X-axis motion and facilitating independent control and coordinated operation of each degree of freedom of the motion control mechanism 300.

[0044] As a further improvement, the vertical lifting assembly 320 includes a linear drive 321, a second guide shaft 322, a linear bushing 323, and a limiting plate 324. The linear drive 321 is fixedly connected to the horizontal plate 312, and the output end of the linear drive 321 passes through the horizontal plate 312 and is hinged to the rotary assembly 330. The second guide shaft 322 is slidably connected to the horizontal plate 312 via the linear bushing 323. The upper end of the second guide shaft 322 is fixedly connected to the limiting plate 324, and the lower end of the second guide shaft 322 is fixedly connected to the rotary assembly 330. Specifically, in this technical solution, after the linear drive 321 is started, its output end extends or retracts. Since the output end is hinged to the rotary assembly 330, it directly pushes the rotary assembly 330 to move vertically. At the same time, the second guide shaft 322 moves synchronously with the rotary assembly 330 and slides vertically under the constraint of the linear bushing 323. The limiting plate 324 is used to limit the maximum descent position of the guide shaft to prevent overtravel. The horizontal plate 312 serves as the mounting base, providing fixed support for the linear drive 321 and the linear bushing 323. The linear drive 321 is hinged to the rotary assembly 330, allowing it to accommodate small angular deflections and avoiding jamming caused by rigid connections. The second guide shaft 322 cooperates with the linear bushing 323 to ensure the straightness and repeatability of the lifting motion. The limiting plate 324 provides mechanical limiting to prevent the clamping mechanism 200 from colliding with the workstation below. The overall structure separates the drive and guide, facilitating maintenance and improving the stability of vertical lifting, providing reliable vertical motion support for the clamping mechanism 200 to lift the pole group for thickness measurement.

[0045] As a further improvement, the rotary assembly 330 includes a fourth rotary drive 331 and a motor mounting bracket 332. The upper end of the motor mounting bracket 332 is hinged to the output end of the linear drive 321. The fourth rotary drive 331 and the motor mounting bracket 332 are fixedly connected, and the output end of the fourth rotary drive 331 is fixedly connected to the clamping mechanism 200. Specifically, in this technical solution, the output end of the linear drive 321 drives the motor mounting bracket 332 to perform vertical lifting and lowering motion through the hinge. The fourth rotary drive 331 rises and falls together with the motor mounting bracket 332. After the fourth rotary drive 331 is started, its output end drives the clamping mechanism 200 to rotate around the vertical axis. The hinge structure at the upper end of the motor mounting bracket 332 allows for the absorption of small angular deviations during lifting and lowering, preventing the output end from bearing additional bending moments.

[0046] As a further improvement, the first rotary drive 220, the second rotary drive 230 and the fourth rotary drive 331 can be stepper motors, and the third rotary drive 314 can be a servo motor or a closed-loop stepper motor. The servo motor or the closed-loop stepper motor can provide precise angle control and holding torque to ensure that the position is locked after rotary rotation.

[0047] Reference Figure 1As shown, in a second aspect, the present invention provides an integrated sinking machine that utilizes the aforementioned lead-acid battery electrode pack clamping device. The device includes a first conveyor belt 400, a second conveyor belt 500, and a sinking mechanism 600. The sinking mechanism 600 is mounted on a frame 100. The first conveyor belt 400 is located below the sinking mechanism 600 and is used to convey battery boxes with assembled electrode packs. The second conveyor belt 500 is mounted on the frame 100 and is used to convey the electrode packs. The lead-acid battery electrode pack clamping device is located between the second conveyor belt 500 and the sinking mechanism 600 and is used to feed the electrode packs into the sinking mechanism 600. Specifically, in this technical solution, the second conveyor belt 500 conveys the clamped and formed electrode packs to the unloading position. The lead-acid battery electrode pack clamping device moves the clamping mechanism 200 above the second conveyor belt 500 via the X-axis translation component 310, the vertical lifting component 320, and the rotation component 330 in the motion control mechanism 300. The clamping mechanism 200 uses a first clamping component 240 and a second clamping component 250 to clamp the electrode group, while the pressure detection structure 260 acquires clamping force information in real time. After clamping, the clamping mechanism 200 lifts the electrode group and, through the linkage of the vertical lifting component 320 and the X-axis translation component 310, moves the electrode group to the working area of ​​the slotting mechanism 600. Simultaneously, the first conveyor belt 400 transports the battery box to below the slotting mechanism 600. The slotting mechanism 600 receives the electrode group from the clamping mechanism 200 and presses it into the corresponding slot in the battery box. After slotting, the clamping mechanism 200 releases and returns to the picking position, entering the next work cycle. Through this design, the clamping device is built between the second conveyor belt 500 and the slotting mechanism 600, eliminating the need for manual intervention and achieving full automation of the electrode group process from forming and clamping to slotting. The clamping device performs pressure testing and electrode thickness calculation before transferring the electrode clusters, allowing it to intercept defective electrode clusters in real time before they are placed in the slot, preventing them from being pressed into the battery box and causing batch rework. The first conveyor belt 400 and the second conveyor belt 500 operate in parallel, and the slotting mechanism 600 and the clamping device work in tandem, improving the overall production efficiency. The rotating component 330 of the clamping device can adjust the electrode cluster posture according to the slotting direction of the slotting mechanism 600, adapting to the assembly requirements of different battery box models and enhancing the practicality of the equipment.

[0048] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the invention and are protected by patent law.

Claims

1. A lead-acid battery pole group wrapping clamp device characterized by, include: frame; A clamping mechanism is provided, comprising a clamping base, with a first rotary drive and a second rotary drive respectively at both ends of the clamping base; a first lead screw and a second lead screw are rotatably disposed within the clamping base, the output end of the first rotary drive and the output end of the second rotary drive are drivenly connected to the first lead screw; at least one clamping unit is provided within the clamping base, the clamping unit having a first clamping assembly and a second clamping assembly arranged horizontally, the first clamping assembly being drivenly connected to the first lead screw, and the second clamping assembly being drivenly connected to the second lead screw; pressure detection structures are respectively provided on the first clamping assembly and the second clamping assembly; the pressure detection structures are capable of acquiring information on the clamping force of the first clamping assembly and the second clamping assembly on the electrode group; A motion control mechanism is provided, which is mounted on the frame. The motion control mechanism includes an X-axis translation component, a vertical lifting component, and a rotation component. The X-axis translation component can control the vertical lifting component to reciprocate in the horizontal direction, the vertical lifting component can control the rotation component to reciprocate in the vertical direction, and the rotation component can control the clamping mechanism to rotate around the vertical axis.

2. The lead-acid battery electrode group clamping device according to claim 1, characterized in that, The first clamping assembly and the second clamping assembly are respectively provided with a fixing plate and a clamping plate. The fixing plate is provided with a mounting hole and a clearance hole. A lead screw nut is provided in the mounting hole. The lead screw nut is drivenly connected to the first lead screw / second lead screw. The clearance hole is clearance-fitted with the second lead screw / first lead screw. The fixing plate is provided with a sliding groove. The upper end of the clamping plate is provided with a sliding part. The sliding part is slidably connected to the sliding groove in the horizontal direction. The lower end of the clamping plate is provided with a clamping part.

3. The lead-acid battery electrode group clamping device according to claim 2, characterized in that, The pressure detection structure includes a mandrel, a sleeve, an elastic pad, a first coil, and two second coils; the mandrel is slidably disposed in the groove in the horizontal direction, the sleeve is embedded in the sliding part, and the sleeve and the mandrel are slidably connected; the first coil and the two second coils are respectively wound around the outer peripheral wall of the sleeve, and the two second coils are respectively arranged on both sides of the first coil in the axial direction.

4. The lead-acid battery electrode group clamping device according to claim 3, characterized in that, The mandrel is made of a soft magnetic material with high permeability, and the sleeve is made of a non-metallic material.

5. The lead-acid battery electrode group clamping device according to claim 1, characterized in that, The clamping mechanism further includes four first guide rods, which are distributed around the periphery of the first lead screw / second lead screw, and the clamping unit is slidably connected to each of the four first guide rods.

6. The lead-acid battery electrode group clamping device according to claim 1, characterized in that, The clamping base is provided with N partitions, which divide the clamping base into N-1 mounting cavities. Each mounting cavity is provided with one clamping unit, where N≥2.

7. The lead-acid battery electrode group clamping device according to claim 1, characterized in that, The X-axis translation assembly includes a first guide rail, a horizontal plate, a third lead screw, and a third rotary drive; the first guide rail is fixedly connected to the frame, the horizontal plate is slidably connected to the first guide rail, the third rotary drive is fixedly connected to the frame, the output end of the third rotary drive is drivenly connected to the third lead screw, and the third lead screw is drivenly connected to the horizontal plate.

8. The lead-acid battery electrode group clamping device according to claim 7, characterized in that, The vertical lifting assembly includes a linear drive, a second guide shaft, a linear bushing, and a limiting plate. The linear drive is fixedly connected to the horizontal plate, and the output end of the linear drive passes through the horizontal plate and is hinged to the rotary assembly. The second guide shaft is slidably connected to the horizontal plate through the linear bushing. The upper end of the second guide shaft is fixedly connected to the limiting plate, and the lower end of the second guide shaft is fixedly connected to the rotary assembly.

9. The lead-acid battery electrode group clamping device according to claim 8, characterized in that, The rotary assembly includes a fourth rotary drive and a motor mounting bracket. The upper end of the motor mounting bracket is hinged to the output end of the linear drive. The fourth rotary drive and the motor mounting bracket are fixedly connected. The output end of the fourth rotary drive is fixedly connected to the clamping mechanism.

10. A type of integrated sinking machine, employing the lead-acid battery electrode pack clamping device according to any one of claims 1-9, characterized in that, The device includes a first conveyor belt, a second conveyor belt, and an infeed mechanism. The infeed mechanism is mounted on the frame. The first conveyor belt is located below the infeed mechanism and is used to transport battery boxes with assembled electrode groups. The second conveyor belt is mounted on the frame and is used to transport electrode groups. The lead-acid battery electrode group clamping device is located between the second conveyor belt and the infeed mechanism and is used to feed the electrode groups into the infeed mechanism.

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