Square battery flexible pole piece anti-wrinkle positioning device

Abstract

The utility model relates to battery processing technical field, concretely relates to a square battery flexible pole piece anti -wrinkle positioning device is set between telescopic pole piece feeding mechanism and winding mechanism, including mounting seat, telescopic cylinder and a pair of slide rails, the slide rail is installed on the mounting seat, a pair of slide rails is in a one -dimensional type setting, the sliding block is slidably installed on each slide rail, the telescopic cylinder is installed on the mounting seat, and the telescopic cylinder is connected with the pull -in plate in telescopic end, two guide slots that are set up in eight characters are seted up on the pull -in plate, and the pin column on two sliding blocks is slidably installed in the corresponding guide slot respectively, each sliding block can be rotatably provided with the clamp roller, and a pair of clamp rollers can clamp the pole piece between telescopic pole piece feeding mechanism and winding mechanism. This square battery flexible pole piece anti -wrinkle positioning device can realize synchronous action, and can effectively prevent the pole piece from appearing wrinkle in winding process.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, specifically to a square battery flexible electrode anti-wrinkle positioning device. Background Technology

[0002] During the winding process of a battery cell, the positive electrode, negative electrode, and separator are typically fed together to the inlet of the winding mechanism via a telescopic electrode feeding mechanism and stacked to form a composite sheet. The winding mechanism then winds this composite sheet into a roll. When the ends of the positive electrode, negative electrode, and separator are fed into the winding mechanism and clamped, most of these components remain on the telescopic electrode feeding mechanism. Due to uneven stress at both ends, these rolls are prone to loosening. This means that wrinkles may exist between the telescopic electrode feeding mechanism and the winding mechanism, affecting the winding quality of the subsequent winding process and directly impacting the quality of the battery cell.

[0003] Currently, to prevent different wrinkles from forming in the positive electrode, negative electrode, and separator inside the composite sheet during winding, the industry typically uses a pair of interlocking clamping rollers between the telescopic electrode feeding mechanism and the winding mechanism. These rollers work together to smooth and even out the composite sheet, ensuring the winding quality, as illustrated in patent CN202411326689.7 - Electrode Sheet Stacking Method. However, this patent uses a telescopic cylinder to drive a downward pulley, requiring synchronized movement of both cylinders. Otherwise, one side of the composite sheet may be compressed first, causing deformation. This can pull on the portion of the composite sheet located on the telescopic electrode feeding mechanism, hindering subsequent winding. Therefore, a positioning mechanism capable of synchronized movement and effectively preventing wrinkles is needed to solve these problems. Utility Model Content

[0004] In order to overcome one of the shortcomings of the prior art, the purpose of this utility model is to provide a square battery flexible electrode anti-wrinkle positioning device. This square battery flexible electrode anti-wrinkle positioning device can realize synchronous operation and effectively prevent the electrode from wrinkling during the winding process.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A square battery flexible electrode anti-wrinkle positioning device is disposed between a telescopic electrode feeding mechanism and a winding mechanism. It includes a mounting base, a telescopic cylinder, and a pair of slide rails. The pair of slide rails are mounted on the mounting base and are arranged in a straight line. Each slide rail has a slider slidably mounted on it. The telescopic cylinder is mounted on the mounting base, and its telescopic end is connected to a pull plate. The pull plate has two guide grooves arranged in a figure-eight shape. Pins on the two sliders are slidably mounted in their respective guide grooves. Each slider has a rotatable clamping roller. The pair of clamping rollers can clamp the electrode between the telescopic electrode feeding mechanism and the winding mechanism.

[0007] Furthermore, the bracket and the slider are connected by screws.

[0008] Furthermore, the back of the bracket is connected to the slider via reinforcing ribs.

[0009] Furthermore, each of the brackets has an opening groove at at least one end, a base is slidably disposed in the opening groove, an installation plate is sealed on the opening of the opening groove, an adjusting bolt is threaded onto the installation plate, one end of the adjusting bolt is rotatably connected to the base, a bearing is disposed on the base, and the corresponding end of the clamping roller is mounted on the bearing.

[0010] Furthermore, the slider is provided with a hinge lug, and the pin is mounted on the hinge lug.

[0011] Furthermore, the extension and retraction direction of the telescopic cylinder coincides with the center line of the pair of slide rails.

[0012] Furthermore, a fixing block is provided on the mounting base, and the mounting end of the telescopic cylinder is hinged to the fixing block.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model discloses a square battery flexible electrode anti-wrinkle positioning device. It uses a telescopic cylinder to directly hinge two sliders through two push-pull rods. It can drive the two sliders to slide on two slide rails, thereby driving two clamping rollers to move closer or further apart. It is adapted to the feeding of the telescopic electrode feeding mechanism and the clamping action of the composite sheet. The whole structure is simple, the operation is reliable, and it can achieve synchronous operation.

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the rear structure of an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the cooperation structure between the support and the clamping roller in an embodiment of this utility model;

[0019] Figure 4 This is a partial structural schematic diagram of the bracket in an embodiment of this utility model.

[0020] Explanation of icon numbers:

[0021] Mounting base 10, fixing block 11, clearance groove 12, telescopic cylinder 20, pulling plate 21, guide groove 22, slide rail 30, slider 40, clamping roller 41, bracket 42, reinforcing rib 43, screw 44, opening groove 45, base 46, mounting plate 47, adjusting bolt 48, hinge ear 49, pin 4a. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0023] Reference Figures 1 to 4 The illustrated square battery flexible electrode anti-wrinkle positioning device is disposed between a telescopic electrode feeding mechanism and a winding mechanism. It includes a mounting base 10, a telescopic cylinder 20, and a pair of slide rails 30. The pair of slide rails 30 are mounted on the mounting base 10 and are arranged in a straight line. Each slide rail 30 has a slider 40 slidably mounted on it. The telescopic cylinder 20 is mounted on the mounting base 10, and the telescopic end of the telescopic cylinder 20 is connected to a pull plate 21. The pull plate 21 has two guide grooves 22 arranged in a figure-eight shape. The pins 4a on the two sliders 40 are slidably mounted in the corresponding guide grooves 22. Each slider 40 is rotatably equipped with a clamping roller 41. The pair of clamping rollers 41 can clamp the electrode between the telescopic electrode feeding mechanism and the winding mechanism.

[0024] Specifically, in the above embodiments, both the telescopic electrode feeding mechanism and the winding mechanism are conventional structures. For example, the telescopic electrode feeding mechanism can adopt the technical solution in patent CN202321826687.5 - A novel lithium-ion secondary battery winding machine with multi-type material slot telescopic length clamp, while the winding mechanism can adopt the technical solution in CN202222009824.8 - A lithium battery winding device with pins or CN202010224679.8 - A winding mechanism in a dual-station lithium battery winding machine. Furthermore, in this application, the end of the two guide slots 22 that is close to each other is the end close to the telescopic cylinder 20.

[0025] The tension plate 21 can be suspended or mounted on an external horizontal rail, which is located in the area between the two slide rails 30. In this application, it is preferably mounted on the horizontal rail. It should be noted that both the telescopic cylinder 20 and the tension plate 21 are mounted on the back of the mounting base 10. The mounting base 10 has a clearance groove 12, and two pins 4a pass through the corresponding clearance grooves 12 to slide and connect with the guide groove 22 on the tension plate 21. In fact, a movable sleeve is fitted onto one end of each pin 4a, and the movable sleeve can be rolled against the inner wall of the guide groove 22 to improve smoothness. The clearance groove 12 is parallel to the two slide rails 30 and located on the same side of the slide rails 30. This structural arrangement ensures that the telescopic cylinder 20 and the tension plate 21 do not affect the normal movement of the clamping roller 41 and the electrode sheet during operation.

[0026] In the embodiments of this application, the extension and retraction direction of the telescopic cylinder 20 coincides with the centerline of the pair of slide rails 30. Furthermore, for ease of installation, a fixing block 11 is provided on the mounting base 10, and the mounting end of the telescopic cylinder 20 is hinged to the fixing block 11.

[0027] This square battery flexible electrode anti-wrinkle positioning device is directly hinged to two sliders 40 via two push-pull rods 50 through a telescopic cylinder 20. It can drive the two sliders 40 to slide on two slide rails 30, thereby driving the two clamping rollers 41 to move closer or further away from each other. It is adapted to the feeding of the telescopic electrode feeding mechanism and the clamping action of the composite sheet. The whole structure is simple, the operation is reliable, and it can achieve synchronous operation.

[0028] In the above embodiment, in order to ensure proper contact between the two clamping rollers 41 and to ensure smooth rotation of the two clamping rollers 41, each slider 40 is provided with a bracket 42, and both ends of each clamping roller 41 are rotatably mounted on the bracket 42. Through the structural design of the bracket 42, a certain supporting force can be ensured at the outward end of the clamping roller 41.

[0029] For ease of installation, the bracket 42 and the slider 40 are connected by screws 44. To ensure that the bracket 42 does not deform excessively under stress, thus affecting the cooperation between the two clamping rollers 41, in one embodiment of this application, the back of the bracket 42 is connected to the slider 40 by reinforcing ribs 43.

[0030] See Figure 1 , Figure 2 and Figure 4 In one embodiment of this application, to accommodate long-term use and ensure that the two clamping rollers 41 can uniformly clamp the electrode sheets when they are in cooperation, at least one end of each bracket 42 is provided with an opening groove 45. A base 46 is slidably disposed within the opening groove 45, and a mounting plate 47 is provided to seal the opening of the opening groove 45. An adjusting bolt 48 is threaded onto the mounting plate 47, and one end of the adjusting bolt 48 is rotatably connected to the base 46. A bearing is provided on the base 46, and the corresponding end of the clamping roller 41 is mounted on the bearing. With this structural arrangement, the operator can finely adjust the swing angle of the corresponding end of the clamping roller 41 relative to the other end by adjusting the adjusting bolt 48, so that the two clamping rollers 41 can remain parallel to each other when they cooperate to clamp the electrode sheets.

[0031] In one embodiment of this application, for ease of installation, the slider 40 is provided with a hinge lug 49, and the pin 4a is mounted on the hinge lug 49. The hinge lug 49 extends out and is located at the corresponding position in the clearance groove 12.

[0032] The working principle of this application is as follows: When it is necessary to clamp the composite sheet, the telescopic end of the telescopic cylinder 20 retracts, which drives the pulling plate 21 to slide along the two guide grooves 22 in a direction perpendicular to each other. In this embodiment, it slides along the horizontal rail. Due to the limiting effect of the side walls of the two guide grooves 22, the pin 4a drives the two sliders 40 to move towards each other on the two slide rails 30, thereby driving the two clamping rollers 41 to gradually approach and clamp the composite sheet. When it is necessary to release the composite sheet, or before waiting for the clamping of the next composite sheet, the telescopic cylinder 20 extends, and the two clamping rollers 41 can gradually move away from each other through the structure of the pulling plate 21, the pin 4a, and the sliders 40.

[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A square battery flexible electrode anti-wrinkle positioning device, disposed between a telescopic electrode feeding mechanism and a winding mechanism, characterized in that, The device includes a mounting base, a telescopic cylinder, and a pair of slide rails. The pair of slide rails are both mounted on the mounting base and are arranged in a straight line. Each slide rail has a slider that is slidably mounted on it. The telescopic cylinder is mounted on the mounting base, and the telescopic end of the telescopic cylinder is connected to a pull plate. The pull plate has two guide grooves arranged in a figure-eight shape. The pins on the two sliders are slidably mounted in the corresponding guide grooves. Each slider has a clamping roller that can be rotatably mounted on it. The pair of clamping rollers can clamp the electrode between the telescopic electrode feeding mechanism and the winding mechanism.

2. The anti-wrinkle positioning device for a square battery flexible electrode sheet according to claim 1, characterized in that: Each slider is provided with a bracket, and both ends of each clamping roller are rotatably mounted on the bracket.

3. The anti-wrinkle positioning device for a square battery flexible electrode sheet according to claim 2, characterized in that: The bracket and the slider are connected by screws.

4. The anti-wrinkle positioning device for a square battery flexible electrode sheet according to claim 2, characterized in that: The back of the bracket is connected to the slider via reinforcing ribs.

5. The anti-wrinkle positioning device for a square battery flexible electrode sheet according to claim 2, characterized in that: At least one end of each bracket is provided with an opening groove, a base is slidably disposed in the opening groove, an installation plate is provided to seal the opening of the opening groove, an adjusting bolt is threaded onto the installation plate, one end of the adjusting bolt can be rotatably connected to the base, a bearing is provided on the base, and the corresponding end of the clamping roller is mounted on the bearing.

6. The anti-wrinkle positioning device for a square battery flexible electrode sheet according to claim 1, characterized in that: The slider is provided with a hinge lug, and the pin is installed on the hinge lug.

7. A square battery flexible electrode anti-wrinkle positioning device according to any one of claims 1-6, characterized in that: A fixing block is provided on the mounting base, and the mounting end of the telescopic cylinder is hinged to the fixing block.

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