High-speed battery pole piece feeding mechanism and high-speed lamination stacking machine

Abstract

The invention relates to a high-speed battery pole piece feeding mechanism and a high-speed lamination stacking machine. According to the high-speed battery pole piece feeding mechanism, two transition platforms, a correction platform and an NG removing platform are distributed on the periphery of a rotary taking and placing device in a cross shape; the two material taking and separating devices distribute the battery pole pieces to the transition platforms in a one-to-one correspondence manner, and the rotary taking and placing device conveys the battery pole pieces on the two transition platforms to the correction platform in turns; the time for distributing the battery pole pieces to the transition platform by each material taking and separating device can be doubled, so that the problems of piece carrying, piece overlapping, piece exceeding, piece falling and the like are better solved, the continuous operation of charging without shutdown can be realized, and the utilization rate of the equipment is improved. The high-speed lamination machine comprises two feeding mechanisms which are arranged in a bilateral symmetry mode, the pole pieces on the correction platforms on the two sides are transferred to the lamination table located in the symmetry center in turn through the material taking mechanism, and the left feeding mechanism and the right feeding mechanism can be used for feeding of positive pole pieces and negative pole pieces of traditional batteries and can also be used for feeding of various pole piece materials in solid-state batteries.

Description

Technical Field

[0001] This invention relates to the field of stacked battery manufacturing technology, specifically to a high-speed battery electrode feeding mechanism and a high-speed stacking machine. Background Technology

[0002] The production of stacked batteries requires layering multiple battery electrodes together. As the core process in stacked battery manufacturing, the speed and precision of the equipment used directly determine battery performance and manufacturing costs. Currently, the production efficiency of stacking machines, especially the feeding speed, has become a key bottleneck restricting the improvement of overall production line capacity.

[0003] The commonly used stacking machine feeding method in the industry typically includes the following basic process: battery electrode sheets are removed from the feeding box or conveyor line, transferred to a positioning platform for position correction by a handling mechanism, and finally precisely placed onto the stacking table by another or the same mechanism to complete the stacking. However, there are inherent contradictions in the timing coordination of the three core links in this process—anti-overlapping sheet grabbing, positioning correction, and transfer to the stacking table—which limit further improvement in equipment speed.

[0004] Specifically, existing technologies face the following main problems:

[0005] (1) The anti-overlapping electrode grasping process is inefficient and time-consuming. Due to the thinness and static electricity of battery electrodes, they are prone to sticking together when stacked. When the robotic arm picks up the electrodes, it often picks up multiple electrodes at the same time. To prevent overlapping, existing technologies generally use a robotic arm to shake the electrodes up and down after picking them up, supplemented by blowing air, brushing, etc., for separation, and use ultrasonic sensors for detection. This shaking separation process takes up a lot of time, and its success rate is affected by the state of the electrodes, static electricity, etc., introducing an unstable time variable, which seriously restricts the grasping speed. Although some patents (such as CN202321456734.1) propose to reduce the contact area by bending the electrodes to eliminate tension and prevent overlapping, its dynamic response and reliability integrated into high-speed timing still need to be verified.

[0006] (2) The time consumed in the positioning and correction process becomes a core bottleneck. After the electrode is grasped, it needs to be photographed by a CCD vision system, and the positional deviation (Δx, Δy, Δθ) is calculated through image processing. Then, a secondary positioning platform (such as a UVW platform) performs precise compensation. The speed of the image processing algorithm and the servo response and motion time of the positioning platform constitute the main time consumption of this process. During this period, the handling mechanism is usually in a waiting state. Although some technologies use dual positioning stages or other methods to attempt parallel operation, they are still limited by the efficiency of the aforementioned anti-weight-grabbing electrode grasping process.

[0007] (3) The synchronization requirement between the transfer process and the stacking table operation causes idle waiting. The calibrated electrode is transferred to the stacking table by a robot. The robot is mostly a two-axis or three-axis robot that runs in a segmented linear motion. This process is subject to the physical limitations of the mechanism's motion path. This multi-segment path will increase the running time.

[0008] In summary, the core problem with existing stacking machine feeding technology lies in the strong sequential dependency and waiting time between the three key processes: anti-overlapping piece grabbing, positioning correction, and transfer stacking. This temporal coupling means that the lower limit of the entire feeding cycle is determined by the slowest and non-parallelizable anti-overlapping piece grabbing step, necessitating an effective solution. Summary of the Invention

[0009] This invention aims to improve the equipment's uptime by enabling high-speed feeding of a stacking machine that operates in parallel, thus overcoming the sequential dependence of the three major stages: anti-overlapping sheet grabbing, positioning correction, and transfer to the stacking table.

[0010] To achieve the above objectives, the present invention proposes a high-speed battery electrode feeding mechanism, including a rotating pick-and-place device set at the center, and two transition platforms, a correction platform, and an NG rejection platform distributed in a cross shape around the rotating pick-and-place device. The two transition platforms are arranged on the front and rear sides of the rotating pick-and-place device, and the correction platform and the NG rejection platform are arranged on the left and right sides, respectively.

[0011] The rotating pick-and-place device is equipped with a rotating arm, a transfer suction cup, a rotating drive and a linear drive. One end of the rotating arm is fixedly connected to the rotating shaft of the rotating drive, and the transfer suction cup is fixedly connected to the other end of the rotating arm. The linear drive is used to push the rotating drive to move up and down, and the rotating drive is used to drive the rotating arm to rotate in the horizontal direction so that the transfer suction cup follows the rotating arm to rotate above any component of the transition platform or the correction platform.

[0012] It includes a material picking and slitting device that corresponds one-to-one with the transition platform. The material picking and slitting device is equipped with a material storage component for stacking and storing battery electrode sheets, and an anti-sticking component for realizing the separation of individual electrode sheets. The material picking and slitting device is used to distribute the battery electrode sheets it stores one by one to the corresponding transition platform.

[0013] The two material picking and slitting devices asynchronously feed materials to the corresponding transition platforms. The rotating picking and placing device transfers the battery electrode sheets on the two transition platforms to the correction platform in turn through the transfer suction cup for use by the downstream stacking mechanism. The electrode sheet transfer process and the detection and correction process of the correction platform are carried out in parallel.

[0014] Above the correction platform is a CCD camera that performs appearance quality inspection and angle inspection on each battery electrode. The correction platform corrects the appearance quality of the battery electrodes by moving them along the X and Y axes and by rotating them around the Z axis. The CCD camera is linked with the rotating pick-and-place device, which transfers the battery electrodes that fail the appearance quality inspection to the NG rejection platform.

[0015] Preferably, the storage component is a loading clip located next to the corresponding transition platform. Above the loading clip are a segmented suction cup, a lifting drive, and a translation drive. The segmented suction cup is connected to the lifting drive, and the lifting drive is connected to the translation drive. The loading clip is used to stack and store battery electrodes. The translation drive is used to drive the lifting drive to move horizontally so that the segmented suction cup moves above either the loading clip or the corresponding transition platform, thereby transferring the battery electrodes located on the top layer of the loading clip to the corresponding transition platform via the segmented suction cup.

[0016] The aforementioned high-speed battery electrode feeding mechanism, through the coordinated design of the rotary arm-type pick-and-place device and the transition platform and correction platform, transforms the traditional serial process into a parallel assembly line operation. The two picking and separating devices can independently and asynchronously feed materials to the two transition platforms without interfering with each other. This achieves time decoupling and efficient parallelism of the battery electrode feeding and correction processes. The picking and separating devices gain twice the time to perform effective anti-overlapping picking, better solving problems such as overlapping, multiple, and dropped electrodes. It can achieve continuous operation without stopping the machine during feeding, improving the equipment's uptime.

[0017] On the other hand, the present invention also proposes a high-speed stacking machine based on the above-mentioned high-speed battery electrode feeding mechanism, including two feeding mechanisms symmetrically arranged on the left and right sides. The feeding mechanisms adopt the high-speed battery electrode feeding mechanism provided by the present invention, and the correction platforms in the two feeding mechanisms are respectively arranged on both sides of the axis of symmetry. It also includes a picking mechanism that reciprocates between the correction platforms of the two feeding mechanisms. The picking mechanism has a left suction cup and a right suction cup arranged on the left and right sides respectively. It also includes a stacking table located on the axis of symmetry of the two feeding mechanisms. The distance between the center of the left suction cup and the center of the right suction cup is equal to the distance from the center of the correction platform to the center of the stacking table. The two feeding mechanisms operate asynchronously. The picking mechanism reciprocates between the correction platforms on both sides and passes through the stacking table. It picks up the battery electrode on the left correction platform with the left suction cup and transfers it to the stacking table. It also picks up the battery electrode on the right correction platform with the right suction cup and transfers it to the stacking table.

[0018] Preferably, the material handling mechanism moves in a “∩” shape in the vertical plane.

[0019] Optionally, the two feeding mechanisms of the high-speed stacking machine are used for feeding positive and negative electrode sheets of conventional batteries, or for feeding multiple electrode materials in solid-state batteries. When feeding positive and negative electrode sheets of conventional batteries, the picking and separating devices of the two feeding mechanisms store positive and negative electrode sheets respectively. When used for feeding solid-state batteries, the picking and separating devices of the two feeding mechanisms store different types of electrode materials respectively, and the picking mechanism alternately picks up the electrode sheets according to the preset stacking order and stacks them on the stacking table.

[0020] Compared with the prior art, the present invention has the following positive effects:

[0021] (1) The two material feeding and separating devices can independently and asynchronously feed materials to the two transition platforms without interfering with each other. Through the synergistic effect of the anti-adhesion components, the single sheet separation effect of the electrode is ensured, and the defect rate of sheet stripping and overlapping is significantly reduced.

[0022] (2) The two material picking and dividing devices can work together to achieve continuous feeding without stopping the machine. Specifically, one of the material picking and dividing devices is used to continuously feed the material. When the battery electrode is exhausted, the other material picking and dividing device will seamlessly take over to continue feeding the material. The material picking and dividing device that has exhausted the battery electrode can take the opportunity to replenish the battery electrode, so that the whole system can achieve continuous feeding without stopping the machine.

[0023] (3) The two material picking and dividing devices alternately feed the rotary picking and placing device asynchronously. Under the same feeding cycle, the effective anti-overlapping picking time of the material picking and dividing device can be doubled. Combined with anti-adhesion components such as flexible blocking parts, ion wind devices, and vibration devices, the defects such as sheet carrying, overlapping, multiple sheets, and sheet falling are further reduced. At the same time, the electrode transfer and correction are carried out in parallel, which greatly improves the work efficiency.

[0024] (4) The transmission path is optimized by the rotational motion of the rotating arm, reducing idle time. Compared with the traditional XY linear module robot arm, which needs to travel in segments along a broken line path, the rotating arm type of the present invention rotates in the horizontal or near-horizontal direction. Its movement trajectory is a shorter and more efficient arc, with faster start and stop, fixed path and high repeatability positioning accuracy, effectively shortening the transfer time of the electrode sheet between platforms and further compressing the single cycle time.

[0025] (5) The system boasts high reliability, a smooth electrode processing flow, and precise interlocking. The entire system layout is clear, with each platform arranged in a cross shape around the rotating pick-and-place device, exhibiting distinct logic. The correction platform integrates online quality inspection functions, forming a closed-loop linkage control with the NG rejection platform. Qualified electrodes are corrected and await pick-up, while unqualified electrodes are immediately rejected by the rotating pick-and-place device and sent to the NG rejection platform, ensuring that only good products enter the stacking process and improving product consistency. This modular and standardized layout reduces equipment complexity and improves operational stability and maintainability.

[0026] (6) The stacking machine has a compact and efficient overall layout, achieving seamless connection of alternating electrode stacking. At the high-speed stacking level, the symmetrically arranged feeding modules, combined with the multi-adsorption component picking mechanism that reciprocates in the middle, enable continuous operation of alternating picking from the two side correction platforms and placing them on the central stacking table. The "∩" shaped motion trajectory of the picking mechanism is smooth and efficient, ensuring the precise placement of the electrodes on the stacking table. This layout makes the electrode supply and stacking actions closely connected with almost no interruption, achieving the ultimate goal of high-speed stacking, while adapting to the multi-scenario application needs of traditional batteries and solid-state batteries. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structural layout of the high-speed battery electrode feeding mechanism in this invention.

[0028] Figure 2 This is a schematic diagram of the structural layout of the high-speed stacking machine in this invention.

[0029] Figure 3 This is a schematic diagram of the high-speed feeding mechanism for battery electrodes in this invention.

[0030] Figure 4 This is a schematic diagram of the high-speed stacking machine in this invention.

[0031] Figure 5 This is a schematic diagram of the rotating pick-and-place device in this invention.

[0032] Figure 6 This is a schematic diagram of the material handling and slicing device in this invention.

[0033] Figure 7 This is a schematic diagram of the correction platform in this invention.

[0034] Figure 8 This is a schematic diagram of the motion trajectory of the material handling mechanism in this invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1-Rotary pick-and-place device; 2-Transition platform; 3-Correction platform; 4-Material picking and slicing device; 9-NG rejection platform; 11-Rotating arm; 12-Transfer suction cup; 13-Rotary drive component; 14-Linear drive component; 41-Feeding clip; 42-Slicing suction cup; 43-Lifting drive component; 44-Translation drive component; 31-X-axis module; 32-Y-axis module; 33-Servo motor;

[0037] 100 - Feeding mechanism; 5 - Unloading mechanism; 51 - Left suction cup; 52 - Right suction cup; 6 - Stacking table. Detailed Implementation

[0038] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0039] Example 1

[0040] refer to Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7 As shown, this embodiment provides a high-speed battery electrode feeding mechanism. Its core objective is to achieve parallel operation of anti-overlapping electrode grabbing and positioning correction through symmetrical layout and timing decoupling, thereby improving the equipment's uptime.

[0041] The high-speed battery electrode feeding mechanism mainly includes a rotary pick-and-place device 1, two transition platforms 2, a correction platform 3, an NG rejection platform 9, and two independent picking and separating devices 4. The two transition platforms 2 form one group, and the correction platform 3 and NG rejection platform 9 form another group. The two groups are diagonally distributed around the rotary pick-and-place device 1, with a compact layout and functional synergy.

[0042] The rotating pick-and-place device 1 includes a rotating arm 11, a transfer suction cup 12, a rotating drive component 13, and a linear drive component 14. The rotating drive component 13 preferably uses a servo motor 33, connected to the rotating arm 11 via a precision reducer to ensure rotational positioning accuracy, with a repeatability ≤ ±0.02 mm and a single rotation cycle of the rotating arm ≤ 0.3 s. The linear drive component 14 can be an electric cylinder or a pneumatic cylinder, driving the entire rotating drive component 13 unit to precisely lift and lower vertically.

[0043] One end of the rotating arm 11 is fixed to the output shaft of the rotary drive 13, and a transfer suction cup 12 is mounted on the flange at the other end. Through the cooperation of the rotary drive 13 and the linear drive 14, the transfer suction cup 12 can move along an arc trajectory in the horizontal plane, successively reaching above the two transition platforms 2, the correction platform 3, and the NG rejection platform 9. Compared with the traditional XY linear module, this rotary motion path is shorter and the start and stop are faster.

[0044] The transfer suction cup 12 is floatingly connected to the end of the rotating arm 11 via a buffer assembly such as a spring or a buffer cylinder. This buffer structure is a common industry design and can prevent impact when picking up or placing battery electrodes. The transfer suction cup 12 can be replaced according to the electrode size to improve mechanism compatibility.

[0045] Each material handling and slitting device 4 is responsible for transferring the stacked battery electrode sheets one by one to the corresponding transition platform 2. Its independence is the basis for realizing parallel operation. Specifically, the material handling and slitting device 4 is equipped with a loading clip 41 located next to the corresponding transition platform 2, and a slitting suction cup 42, a lifting drive 43, and a translation drive 44 located above the loading clip 41. The slitting suction cup 42 is connected to the lifting drive 43, and the lifting drive 43 is connected to the translation drive 44.

[0046] The anti-adhesion assembly includes flexible blocking elements and an ionization device disposed on both sides of the feeding clip 41, and a vibrating device disposed on the segmentation suction cup 42. The three components independently or collaboratively achieve single-sheet separation of the electrode sheets. The flexible blocking elements use flexible bristles with a Shore A hardness of 20-30° and a bristle length of 5-8mm. When the segmentation suction cup 42 picks up the battery electrode sheet and rises, the flexible bristles apply downward resistance to any lower electrode sheets that may be pulled up along with it. The ion dissipation time of the ionization device is ≤0.5S, used to eliminate electrostatic adsorption between the electrode sheets. The vibration frequency of the vibrating device is 50-100Hz, breaking down the adhesion between the electrode sheets through micro-vibration.

[0047] The suction surface of the segmented suction cup can be equipped with a silicone suction pad adapted to the battery electrode sheet, and the suction pressure can be adjusted to -0.03~-0.05MPa according to the electrode sheet material. The loading clip 41 is used to hold the stacked battery electrode sheets, and can be equipped with a lifting component according to existing technology, such as a lead screw module driven by a servo motor 33, which can achieve automatic lifting with an accuracy of 0.01mm, maintain the height deviation of the top electrode sheet at 0.2mm, and automatically lift after the top battery electrode sheet is removed to keep the height of the top battery electrode sheet constant.

[0048] The translation drive 44 can be a linear module with a moving speed of 0.5-1m / s and a positioning accuracy of ≤0.02mm; the lifting drive 43 can be a cylinder or an electric slide with a lifting stroke of 10-30mm and a response time of ≤0.1s. The lifting drive 43 and the segmented suction cup 42 form a whole, moving horizontally between the loading magazine 41 and the corresponding transition platform 2.

[0049] The top surface of the transition platform 2 is evenly distributed with multiple air intake holes, which are used to adsorb the battery electrode sheets onto the top surface of the transition platform 2 by negative pressure adsorption.

[0050] A CCD camera (not shown) is fixed above the correction platform 3. The CCD camera has an appearance inspection accuracy of ≤0.1mm and an angle detection error of ≤±0.1°. The image processing system performs appearance quality inspection (such as scratches and stains) and angle detection on each electrode placed on it, and quickly calculates the lateral deviation Δx, longitudinal deviation Δy, and tilt angle Δθ of the electrode. The correction platform 3 itself is a high-precision secondary positioning platform, such as a UVW platform, with an X-axis module 31 for lateral movement correction, a Y-axis module 32 for longitudinal movement correction, and a servo motor 33 for Z-axis angle rotation correction. After receiving the signal from the CCD camera, it can drive the platform surface of the correction platform 3 to perform micro-movements in the X and Y directions and rotation around the Z-axis, thereby correcting the battery electrode to the desired precise position with a response time of ≤0.2S.

[0051] The CCD camera and the rotating pick-and-place device 1 form a linkage control. If the CCD camera detects that the appearance quality of the battery electrode is unqualified, the rotating pick-and-place device 1 will not send the unqualified battery electrode to the stacking station, but will transfer it to the NG rejection platform 9 to ensure that only good products enter the subsequent stacking process. The cycle of a single NG rejection action is ≤0.2S.

[0052] The top surface of the correction platform 3 is also evenly distributed with multiple suction holes, which are used to adsorb the battery electrode sheets onto the top surface of the correction platform 3 by negative pressure adsorption. Specifically, the pore diameter of the suction holes is 0.3-0.5 mm, the negative pressure adsorption pressure range is -0.04 to -0.06 MPa, and it is suitable for battery electrode sheets and related materials with a thickness of 0.03-0.2 mm and a size of 50-300 mm × 50-300 mm.

[0053] The complete working cycle of the above-mentioned high-speed battery electrode feeding mechanism is as follows.

[0054] (1) The first material picking and separating device 4's separating suction cup 42 picks up a battery electrode sheet from the feeding clip 41, and after being separated by the anti-adhesion component, it is placed on the first transition platform 2. Almost simultaneously, the transfer suction cup 12 of the rotating picking and placing device 1 is transferring the battery electrode sheet that has already been placed on the second transition platform 2 and has completed the previous cycle correction to the stacking mechanism or performing other operations.

[0055] (2) After the aforementioned operation is completed, the rotating arm 11 rotates and the transfer suction cup 12 descends to pick up the battery electrode on the first transition platform 2.

[0056] (3) The transfer suction cup 12 transfers the battery electrode sheet and places it on the correction platform 3. During this period, the first material picking and separating device 4 can immediately start to replenish the next electrode sheet to the empty first transition platform 2. At the same time, the CCD camera detects the electrode sheet on the correction platform 3. If it is qualified, the correction platform 3 is started to perform position correction. The electrode sheet transfer and correction processes are carried out in parallel, with no idle waiting time.

[0057] (4) When the correction platform 3 is correcting the electrode, the transfer suction cup 12 of the rotary pick-and-place device 1 can immediately perform other tasks, such as picking up the next battery electrode from the second transition platform 2, or transferring the unqualified waste to the NG rejection platform 9.

[0058] On the one hand, the two material picking and segmenting devices can work together to achieve continuous feeding without stopping the machine. Specifically, one material picking and segmenting device is used to continuously feed materials. When its battery electrode sheets are exhausted, the other material picking and segmenting device seamlessly takes over to continue feeding materials. The material picking and segmenting device that has exhausted its battery electrode sheets can take the opportunity to replenish the battery electrode sheets, so that the entire system can achieve continuous feeding without stopping the machine.

[0059] On the other hand, the two material handling and slitting devices can work together to achieve high-speed feeding with extremely low defect rates, including issues such as sheet slippage, overlapping sheets, multiple sheets, and sheet drop. Specifically, the two material handling and slitting devices work asynchronously, taking turns supplying battery electrodes to the rotary pick-and-place device via a transition platform. While the rotary pick-and-place device's transfer suction cup is transferring electrodes from one transition platform to the stacking table or performing other operations, the other material handling and slitting device can simultaneously supply material to the other transition platform. Simultaneously, the correction platform can perform independent visual inspection and position correction on the placed electrodes. Assuming the time for each material handling and slitting device to effectively prevent overlapping sheet grasping is T, and the time difference between the asynchronous operation of the two devices is T / 2, then the rotary pick-and-place device can acquire one battery electrode every T / 2 intervals. This design allows the two material handling and slitting devices to asynchronously alternately supply material to the rotary pick-and-place device. Under the same feeding cycle, the effective anti-overlap sheet grasping time of the material handling and slitting devices is doubled, effectively solving problems such as sheet slippage, overlapping sheets, multiple sheets, and sheet drop, and improving equipment uptime.

[0060]

Example 2

[0061] refer to Figures 1 to 8 As shown, this embodiment is used to disclose the high-speed stacking machine of the present invention. Its core feature is that it integrates two sets of high-speed battery electrode feeding mechanisms as described in Embodiment 1, and is arranged in a left-right symmetrical manner.

[0062] The high-speed stacking machine includes two symmetrically arranged feeding mechanisms 100 in space. Each feeding mechanism 100 employs the high-speed battery electrode feeding mechanism described in Embodiment 1, and the correction platforms 3 in the two feeding mechanisms 100 are respectively positioned on both sides of the axis of symmetry. It also includes a picking mechanism 5 that reciprocates between the correction platforms 3 of the two feeding mechanisms 100. The picking mechanism 5 has at least two adsorption components for gripping the electrode sheets; in this embodiment, it consists of a left-side suction cup 51 and a right-side suction cup 52 arranged side-by-side. This mechanism is used to alternately remove the processed battery electrode sheets from the correction platforms 3 on both sides and stack them onto the stacking table 6. It also includes a stacking table 6 located on the axis of symmetry of the two feeding mechanisms. The distance between the center of the left-side suction cup 51 and the center of the right-side suction cup 52 is equal to the distance from the center of the correction platform 3 to the center of the stacking table 6. The two feeding mechanisms 100 operate asynchronously. The picking mechanism 5 reciprocates between the correction platforms 3 on both sides, passing through the stacking table 6, and using the left-side suction cup 51... The battery electrode sheet on the left correction platform 3 is picked up and transferred to the stacking stage 6, and the battery electrode sheet on the right correction platform 3 is picked up and transferred to the stacking stage 6 by the right suction cup 52.

[0063] Furthermore, the material handling mechanism 5 moves in a “∩” shape in the vertical plane, with a single reciprocating cycle of ≤0.5s.

[0064] The working process of the above-mentioned high-speed stacking machine is as follows:

[0065] (1) The two feeding mechanisms work asynchronously and independently, and complete the feeding, transfer, inspection and correction of their respective battery electrode sheets without interfering with each other.

[0066] (2) The material picking mechanism 5 moves to the left and picks up the battery electrode sheet that has been corrected from the left correction platform 3 through the left suction cup 51; then, the material picking mechanism 5 moves to the right. During this process, it can perform pick-up and put-down operations. While picking up the battery electrode sheet from the right correction platform 3 through the right suction cup 52, it places the left electrode sheet carried by the left suction cup 51 into the center of the stacking stage 6.

[0067] (3) The material taking mechanism 5 carries the right electrode back to the left side and repeats this alternating taking and placing process.

[0068] Since the feeding and processing processes of the left and right feeding mechanisms 100 are continuously parallel, it ensures that when the picking mechanism 5 moves to either side, there are always prepared electrode sheets waiting to be picked up on the correction platform 3 on that side, thus achieving seamless and efficient connection between electrode sheet supply and stacking action.

[0069] In Example 2, during the production of traditional stacked batteries, the left and right feeding mechanisms are used for feeding the positive and negative battery electrodes, respectively. The two picking and separating devices in the same high-speed battery electrode feeding mechanism can work together in a feeding mode without stopping the machine, and also work together in a high-speed feeding mode with extremely low defect rates, such as feeding with sheets, sheets with multiple sheets, and sheets that fall off.

[0070] In Example 2, for stacked solid-state batteries, the left and right feeding mechanisms can work together to feed various electrode materials. For example, the two picking and separating devices of the high-speed battery electrode feeding mechanism on the left place the positive electrode material and the solid electrolyte membrane, respectively, while the two picking and separating devices of the high-speed battery electrode feeding mechanism on the right place the negative electrode material and the solid electrolyte membrane, respectively. During feeding, the left and right feeding mechanisms work together with the picking mechanism to feed materials in the stacking sequence of "positive electrode material + solid electrolyte membrane + negative electrode material + solid electrolyte membrane + positive electrode material + ... + negative electrode material". The left and right feeding mechanisms work together in a high-speed feeding mode that achieves extremely low defect rates for sheet loading, handling of multiple sheets, and sheet drop.

[0071] Although embodiments of the invention have been shown and described, those skilled in the art will recognize that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-speed feeding mechanism for battery pole pieces, characterized in that, The rotating taking and placing device is provided in the center, two transition platforms, a correction platform and an NG rejection platform are distributed in a cross shape around the rotating taking and placing device, the two transition platforms are arranged on the front and back sides of the rotating taking and placing device, and the correction platform and the NG rejection platform are arranged on the left and right sides. The rotating taking and placing device is provided with a rotating arm, a rotating and transferring suction disc, a rotating driving part and a linear driving part, one end of the rotating arm is fixedly connected with a rotating shaft of the rotating driving part, the rotating and transferring suction disc is fixedly connected with the other end of the rotating arm, the linear driving part is used for driving the rotating driving part to move up and down, and the rotating driving part is used for driving the rotating arm to rotate in the horizontal direction, so that the rotating and transferring suction disc rotates to the upper side of any one of the transition platforms and the correction platform. The taking and separating device corresponding to the transition platform is further provided, the taking and separating device is provided with a storage assembly for stacking and storing the battery pole piece and an anti-adhesion assembly for separating the battery pole piece, and the taking and separating device is used for distributing the battery pole pieces stored in the taking and separating device to the corresponding transition platform. The two taking and separating devices supply the corresponding transition platforms asynchronously, the rotating taking and placing device rotates and transfers the battery pole pieces on the two transition platforms to the correction platform through the rotating and transferring suction disc, so that the downstream laminating mechanism takes the battery pole pieces, and the rotating and transferring process is performed in parallel with the detection and correction process of the correction platform. The CCD camera is arranged above the correction platform and is used for detecting the appearance quality and the angle of each battery pole piece, the correction platform moves and corrects the battery pole piece along the X axis and the Y axis and rotates and corrects the battery pole piece around the Z axis, the CCD camera is connected with the rotating taking and placing device to form linkage control, and the rotating taking and placing device transfers the battery pole piece with unqualified appearance quality to the NG rejection platform.

2. The high-speed feeding mechanism for battery pole pieces according to claim 1, characterized in that, The storage assembly is a feeding clip arranged beside the corresponding transition platform, the feeding clip is provided with a separating suction disc, a lifting driving part and a translation driving part, the separating suction disc is connected with the lifting driving part, and the lifting driving part is connected with the translation driving part. The feeding clip is used for stacking and storing the battery pole pieces, the translation driving part is used for driving the lifting driving part to move horizontally, so that the separating suction disc moves to the upper side of any one of the feeding clip and the corresponding transition platform, and then the separating suction disc transfers the battery pole piece on the top layer of the feeding clip to the corresponding transition platform.

3. The high-speed feeding mechanism of battery pole piece according to claim 2, characterized in that, The anti-adhesion assembly includes flexible blocking parts arranged on both sides of the feeding clip, an ion wind device and / or a vibrating device arranged on the separating suction disc.

4. The high-speed feeding mechanism of battery pole piece according to claim 2, characterized in that, The feeding clip is used for stacking and storing the battery pole pieces and is provided with an automatic lifting assembly.

5. The high speed feeding mechanism of battery pole piece according to claim 2, wherein, The adsorption surface of the separating suction disc is provided with a silica gel adsorption pad matched with the battery pole piece.

6. A high speed lamination machine characterized by, The application relates to a battery pole piece feeding device, which comprises two left-right symmetrical feeding mechanisms, the feeding mechanisms adopt the high-speed battery pole piece feeding mechanism according to any one of claims 1 to 5, and the correction platforms in the two feeding mechanisms are arranged on the two sides of the symmetry axis respectively; the device further comprises a material taking mechanism reciprocating between the correction platforms of the two feeding mechanisms, the material taking mechanism has left and right arranged left and right suction cups; the device further comprises a laminated piece table located on the symmetry axis of the two feeding mechanisms, the distance between the center points of the left and right suction cups is equal to the distance from the center of the correction platform to the center of the laminated piece table; the two feeding mechanisms are operated asynchronously, the material taking mechanism reciprocates between the two correction platforms and passes through the laminated piece table, the left suction cup is used to grab the battery pole piece on the left correction platform and transfer and place the battery pole piece on the laminated piece table, and the right suction cup is used to grab the battery pole piece on the right correction platform and transfer and place the battery pole piece on the laminated piece table.

7. The high speed lamination machine of claim 6, wherein, The movement track of the material taking mechanism in the vertical plane is in the shape of "∩".

8. The high speed lamination machine of claim 6, wherein, The two feeding mechanisms are respectively used for feeding the positive and negative pole pieces of traditional batteries or feeding various pole piece materials in solid-state batteries; when the positive and negative pole pieces of traditional batteries are fed, the material taking and separating devices of the two feeding mechanisms respectively store the positive and negative pole pieces; when the two feeding mechanisms are used for feeding solid-state batteries, the material taking and separating devices of the two feeding mechanisms respectively store different types of pole piece materials, the material taking mechanism alternately grabs the pole pieces according to a preset laminated sequence and laminates the pole pieces on the laminated piece table.

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