An electrode plate rolling device

Abstract

The utility model provides a kind of battery cell kneading device, including: fixed frame, rotating main shaft and turret portion rotating around the axis of rotation main shaft driven by rotating main shaft are provided on fixed frame, main shaft transmission wheel is provided on rotating main shaft, and main shaft transmission wheel does not rotate with rotating main shaft;Kneading assembly is set on turret portion and rotates with turret portion, and kneading assembly includes: support shaft seat, kneading rotating seat is rotatably set on support shaft seat around its axis, center hole needle is set in the center of kneading rotating seat, kneading needle is set on the periphery of center hole needle, spline shaft is set on support shaft seat, and spline shaft drives kneading rotating seat to rotate by rotating structure;Kneading drive motor drives kneading assembly to act, and kneading drive motor passes through transmission sleeve and transmits rotary driving force to main shaft transmission wheel, and main shaft transmission wheel drives spline shaft to rotate around its axis by third transmission wheel.The utility model shortens the transmission chain of kneading assembly, and improves transmission efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of lithium battery manufacturing equipment, specifically relating to a cell flattening device used in an automated production line for cylindrical lithium batteries. Background Technology

[0002] With the rapid development of the lithium battery industry, the application of lithium batteries is becoming increasingly widespread, and users have higher and higher requirements for battery quality. Lithium battery manufacturing processes also need continuous improvement to meet these needs. Currently, some cylindrical lithium battery manufacturing processes include a tab flattening process, where a flattening assembly flattens the tabs at the end of the cell. Flattening brings all the tabs to a single plane, which not only facilitates subsequent current collector welding and ensures good current conduction, but also allows for controllable tab bending through inward pressing, ensuring welding stability in the subsequent current collector welding process. In some existing turret-type flattening devices, the movement of the flattening assembly and the rotation of the turret share the same motor, requiring a complex transmission shaft system with low transmission efficiency. Furthermore, the long transmission chain easily leads to the accumulation of component errors, ultimately causing deviations in the flattened cell thickness and affecting product quality. Utility Model Content

[0003] The purpose of this invention is to provide a battery cell flattening device with a short transmission chain and high transmission efficiency in the flattening component.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A battery cell leveling device includes: a fixed frame, on which a rotating main shaft and a turret portion driven by the rotating main shaft to rotate around the axis of the rotating main shaft are disposed; a main shaft drive wheel is disposed on the rotating main shaft, and the main shaft drive wheel does not rotate with the rotating main shaft; a leveling assembly disposed on the turret portion and rotating with the turret portion, the leveling assembly including: a support shaft seat, a leveling rotating seat rotatably disposed on the support shaft seat around its own axis, a central hole pin disposed at the center of the leveling rotating seat, leveling needles disposed around the central hole pin, and a spline shaft disposed on the support shaft seat, the spline shaft driving the leveling rotating seat to rotate through a rotating structure; and a leveling drive motor driving the leveling assembly to operate, the leveling drive motor transmitting rotational driving force to the main shaft drive wheel through a transmission sleeve, the main shaft drive wheel driving the spline shaft to rotate around its own axis through a third transmission wheel.

[0006] In some embodiments, the turret section includes an upper plate and a lower plate, the rotating main shaft passes through the upper plate and the lower plate in sequence, and drives the upper plate and the lower plate to rotate synchronously; the kneading assembly is arranged circumferentially on the lower plate, the third transmission wheel is arranged on the upper plate, and the spline shaft is connected to the shaft of the third transmission wheel through a coupling.

[0007] In some embodiments, the main shaft drive wheel includes a first drive wheel and a second drive wheel that are coaxially arranged and rotate synchronously, and the second drive wheel and the third drive wheel mesh with each other; the two ends of the drive sleeve are respectively provided with drive gears, the drive gear at the upper end of the drive sleeve meshes with the drive gear on the output shaft of the kneading drive motor, and the transmission gear at the lower end of the drive sleeve meshes with the first drive wheel.

[0008] In some embodiments, the spline shaft and the kneading rotary table are respectively provided with synchronous pulleys, and the spline shaft drives the kneading rotary table to rotate by a synchronous belt passing around the synchronous pulleys.

[0009] In some embodiments, the spline shaft is provided with two synchronous pulleys, which can simultaneously drive the kneading rotary seats of two adjacent kneading components to rotate.

[0010] In some embodiments, the kneading drive motor is mounted on the top plate of the fixed frame via a bracket.

[0011] In some embodiments, the kneading rotary table is provided with a dust collection pipe that communicates with the inner cavity of the central hole needle. The dust collection pipe is connected to the dust collection pipeline, and the other end of the dust collection pipe is connected to the main dust collection chamber.

[0012] In some embodiments, the kneading assembly further includes a dust collection box that encloses the kneading turntable.

[0013] In some embodiments, the main shaft drive wheel is a double gear.

[0014] As can be seen from the above technical solution, the action of the kneading and leveling component of this utility model is driven by an independent servo motor, which is separate from the rotation drive of the rotating tower. The rotating shaft transmission wheel can drive the action of each kneading and leveling component, which simplifies the transmission structure of the kneading and leveling component, shortens the transmission chain, reduces the load on parts, reduces error sources, and improves the stability of the rotation speed. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the battery cell flattening device according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the battery cell flattening device from another angle, according to an embodiment of this utility model.

[0018] Figure 3 The schematic diagrams of some of the kneading components and the battery cell clamping mechanism are omitted for the purposes of this embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the kneading and leveling component and the kneading drive motor in an embodiment of the present invention;

[0020] Figure 5 This is a simplified diagram illustrating the transmission relationship between the kneading motor and the kneading leveling assembly in an embodiment of this utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the kneading and smoothing component according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the kneading component after the dust collection box has been removed in an embodiment of this utility model;

[0023] Figure 8 This is a cross-sectional view of the kneading and flattening component according to an embodiment of the present invention;

[0024] Figure 9 This is a cross-sectional view of the spindle drive wheel mounted on the rotating spindle in an embodiment of the present invention.

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings. In the detailed description of the embodiments of the present invention, for ease of explanation, the drawings illustrating the device structure will be partially enlarged without adhering to the general scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. It should be noted that the drawings are in a simplified form and use non-precise scales, solely for the purpose of conveniently and clearly illustrating the embodiments of the present invention. Additionally, in the description of this application, terms such as "first" and "second" are used only to distinguish descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Terms such as "positive," "negative," "bottom," "upper," "lower," "front," "rear," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 the present invention.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Reference Figure 1 , Figure 2 and Figure 3 The cell flattening device of this embodiment includes a fixed frame 1, a turret 2, a rotating spindle 3, a flattening assembly 4, and a cell clamping mechanism 5. The fixed frame 1 is fixed on the frame (not shown) of the lithium battery production line. The fixed frame 1 of this embodiment includes a top plate 1-1 and four support legs 1-2. The top plate 1-1 is supported by four support legs 1-2, which are disposed on the frame of the lithium battery production line.

[0029] The rotating spindle 3 is connected to the top plate 1-1 of the fixed frame 1 via bearings. The turret 2 is mounted on the rotating spindle 3 and is driven to rotate by the rotating spindle 3. In this embodiment, a spindle drive gear 6 is provided at the bottom of the rotating spindle 3. The spindle drive gear 6 receives the rotational force from an external drive motor (not shown) and drives the rotating spindle 3 and the turret 2 to rotate around the axis of the rotating spindle 3.

[0030] In this embodiment, the turret section 2 includes an upper plate 2-1 and a lower plate 2-2. The rotating main shaft 3 passes through the upper plate 2-1 and the lower plate 2-2 sequentially and is fixedly connected to the upper plate 2-1 and the lower plate 2-2, thereby driving the upper plate 2-1 and the lower plate 2-2 to rotate. Multiple sets of kneading components 4 are arranged circumferentially on the lower plate 2-2. The battery cell clamping mechanism 5 is located above the kneading components 4 and is used to clamp the battery cell 100. The battery cell clamping mechanism 5 and the kneading components 4 are arranged in a one-to-one correspondence. Both the battery cell clamping mechanism 5 and the kneading components 4 rotate synchronously with the rotating main shaft 3.

[0031] In this embodiment, a dedicated kneading drive motor 7 for driving the kneading and leveling component 4 is installed on the top plate 1-1 of the fixed frame 1. That is, the driving force of the kneading and leveling component 4 and the driving force of the turret 2 are provided by different drive units. The kneading drive motor 7 is connected to the top plate 1-1 through the motor bracket 7-1, which realizes the stable support of the overall structure and ensures that the vibration and displacement of the motor during operation are effectively constrained.

[0032] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the kneading assembly 4 in this embodiment includes a support shaft seat 4-1, a kneading needle 4-2, a kneading rotary seat 4-3, a center hole needle 4-4, a dust collection box 4-5, a splined shaft 4-6, and a dust collection pipe 4-7.

[0033] In this embodiment, the support shaft seat 4-1 is mounted on the lower plate 2-2 via a bracket. The kneading rotary seat 4-3 is rotatably mounted on the support shaft seat 4-1. A central hole pin 4-4 is located at the center of the kneading rotary seat 4-3, and kneading pins 4-2 are spaced circumferentially on the kneading rotary seat 4-3, located around the central hole pin 4-4. A dust collection pipe 4-3a is machined inside the kneading rotary seat 4-3, communicating with the inner cavity of the central hole pin 4-4. One end of the dust collection pipe 4-7 is connected to the dust collection pipe 4-3a, and the other end is connected to the main dust collection chamber, used to collect debris and dust generated during the kneading process. A dust collector box 4-5 encloses the kneading rotary seat 4-3, preventing debris and dust from scattering and achieving better dust removal.

[0034] Splined shaft 4-6 is mounted on support shaft seat 4-1 via bearings. A synchronous pulley 4-9 is mounted on splined shaft 4-6, and another synchronous pulley 4-9 is located at the lower part of the kneading rotary seat 4-3. Synchronous belt 10 passes over the synchronous pulleys 4-9 on splined shaft 4-6 and kneading rotary seat 4-3, thereby driving the kneading needle 4-2. In this embodiment, two synchronous pulleys 4-9 are mounted on splined shaft 4-6, allowing simultaneous driving of the kneading actions of two adjacent kneading components 4, improving transmission efficiency and simplifying the transmission structure.

[0035] The kneading drive motor 7 is mounted on the top plate 1-1 of the fixed frame 1. The kneading drive motor 7 transmits the kneading driving force of the kneading assembly 4 to the splined shaft 4-6 via the transmission sleeve 4-8. In this embodiment, a main drive gear 8 is provided on the output shaft of the kneading drive motor 7, and transmission gears 4-11 are respectively provided at both ends of the transmission sleeve 8. A main shaft transmission wheel 4-12 is provided on the rotating main shaft 3. The main shaft transmission wheel 4-12 is mounted on the rotating main shaft 3 via bearings and does not rotate with the rotating main shaft 3. In this embodiment, the main shaft transmission wheel 4-12 includes a first transmission wheel 4-12a and a second transmission wheel 4-12b arranged coaxially. The main shaft transmission wheel 4-12 can be a double gear, meaning the first transmission wheel 4-12a and the second transmission wheel 4-12b are integrated; alternatively, the first transmission wheel 4-12a and the second transmission wheel 4-12b can be two independent and synchronously rotating transmission wheels. In this embodiment, a third transmission wheel 4-13 corresponding to the spline shaft 4-6 is provided on the upper plate 2-1. The third transmission wheel 4-13 is evenly spaced along the circumference and rotates together with the turret part 2 (upper plate). The shaft of the third transmission wheel 4-13 is connected to the spline shaft 4-6 through a coupling.

[0036] The kneading drive motor 7 transmits power to the kneading and leveling assembly 4 through the transmission sleeve 8, controlling the rotation speed of the end kneading and leveling needle. The main drive gear 8 on the output shaft of the kneading drive motor 7 meshes with the transmission gear 4-11 at the upper end of the transmission sleeve 8, thereby driving the transmission sleeve 8 to rotate. The transmission gear 4-11 at the lower end of the transmission sleeve 8 meshes with the first transmission wheel 4-12a of the main shaft transmission wheel 4-12, thereby driving the first transmission wheel 4-12a to rotate. The second transmission wheel 4-12b, which rotates synchronously with the first transmission wheel 4-12a, meshes with the third transmission wheel 4-13 of each kneading and leveling assembly 4, thereby transmitting the driving force of the kneading drive motor 7 to each kneading and leveling assembly 4. The third transmission wheel 4-13 drives the spline shaft 4-6 to rotate. The spline shaft 4-6 drives the kneading and leveling turntable 4-3 to rotate through the synchronous belt 4-10 and the synchronous pulley 4-9. The kneading and leveling needle 4-2 kneads and leveles the end of the battery cell 100.

[0037] The kneading and leveling component of this invention adopts an independent servo motor drive mode, with the drive structure and rotating spindle separated. The independent motor drive can focus on controlling the speed, torque, and downward pressure of the kneading and leveling roller, improving the pressure control accuracy of the kneading and leveling roller, ensuring the accuracy of compaction and shaping of the battery cell surface, and shortening the transmission chain of the kneading and leveling needle, reducing error sources, avoiding mutual interference and coupling errors in the power transmission process, improving transmission efficiency and transmission stability, and making fault diagnosis and maintenance easier, shortening equipment downtime, and improving the uptime of the production line.

[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery cell flattening device, characterized in that, include: A fixed frame is provided, on which a rotating main shaft and a turret part driven by the rotating main shaft to rotate around the axis of the rotating main shaft are provided. A main shaft drive wheel is provided on the rotating main shaft, and the main shaft drive wheel does not rotate with the rotating main shaft. A smoothing assembly is mounted on the turret and rotates with the turret. The smoothing assembly includes: a support shaft seat, a smoothing rotating seat rotatably mounted on the support shaft seat about its own axis, a central hole pin located at the center of the smoothing rotating seat, smoothing needles located around the central hole pin, and a splined shaft mounted on the support shaft seat. The splined shaft drives the smoothing rotating seat to rotate through a rotating structure. The kneading drive motor drives the kneading component to move. The kneading drive motor transmits rotational driving force to the main shaft drive wheel through the transmission sleeve. The main shaft drive wheel drives the spline shaft to rotate around its own axis through the third transmission wheel.

2. The cell flattening device as described in claim 1, characterized in that: The turret section includes an upper plate and a lower plate. The rotating main shaft passes through the upper plate and the lower plate in sequence, driving the upper plate and the lower plate to rotate synchronously. The kneading assembly is arranged at intervals along the circumference on the lower plate. The third transmission wheel is arranged on the upper plate. The spline shaft is connected to the shaft of the third transmission wheel through a coupling.

3. The cell flattening device as described in claim 1 or 2, characterized in that: The main shaft transmission wheel includes a first transmission wheel and a second transmission wheel that are coaxially arranged and rotate synchronously. The second transmission wheel and the third transmission wheel mesh with each other. Transmission gears are respectively provided at both ends of the transmission sleeve. The transmission gear at the upper end of the transmission sleeve meshes with the drive gear on the output shaft of the kneading drive motor. The transmission gear at the lower end of the transmission sleeve meshes with the first transmission wheel.

4. The cell flattening device as described in claim 1, characterized in that: Synchronous pulleys are respectively provided on the spline shaft and the kneading rotary table. The spline shaft drives the kneading rotary table to rotate by a synchronous belt that passes around the synchronous pulley.

5. The cell flattening device as described in claim 4, characterized in that: The splined shaft is equipped with two synchronous pulleys, which can simultaneously drive the kneading rotary seats of two adjacent kneading components to rotate.

6. The cell flattening device as described in claim 1, characterized in that: The kneading drive motor is mounted on the top plate of the fixed frame via a bracket.

7. The cell flattening device as described in claim 1, characterized in that: The kneading rotary seat is equipped with a dust collection pipe that communicates with the inner cavity of the central hole needle. The dust collection pipe is connected to the dust collection pipeline, and the other end of the dust collection pipe is connected to the main dust collection chamber.

8. The cell flattening device as described in claim 1 or 7, characterized in that: The kneading assembly also includes a dust collection box, which encloses the kneading turntable.

9. The cell flattening device as described in claim 3, characterized in that: The main shaft drive wheel is a double gear.

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