Battery cell diaphragm conveying device

Abstract

The battery cell diaphragm conveying device comprises a bracket, a driving passing roller, a compression roller and a compression roller adjusting assembly, the driving passing roller rotates around a shaft on the bracket; the axis of the pressing roller is parallel to the axis of the driving passing roller; the pressing roller adjusting assembly drives the pressing roller to slide relative to the driving passing roller in the direction parallel to the axis of the driving passing roller and comprises a lead screw and a sliding base. The lead screw is installed on the support, and the axis of the lead screw is parallel to the axis of the driving passing roller. The sliding seat is in threaded connection with the lead screw, and the pressing roller is installed on the sliding seat. Compared with the prior art, the battery cell diaphragm conveying device disclosed by the utility model has the advantages that diaphragms and the like are not easy to deviate, and defective products are reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, and in particular to a battery cell separator conveying device. Background Technology

[0002] Lithium-ion batteries are a common type of battery in modern society. A typical lithium-ion battery includes a casing, a positive electrode, a negative electrode, an electrolyte, and a separator. The positive and negative electrodes are respectively located at opposite ends of the casing. The electrolyte is contained within the casing to form ions. The separator, located inside the casing, separates the positive and negative electrodes to prevent short circuits caused by contact between the two electrodes. Therefore, the placement of the separator within the casing directly affects the battery's overall performance, including capacity, cycle life, and safety.

[0003] However, in the traditional lithium-ion battery production process, defective lithium-ion batteries often occur due to poor separator sealing performance or separator damage. Utility Model Content

[0004] Based on this, the purpose of this utility model is to overcome the defects or deficiencies of the prior art and provide a battery cell diaphragm conveying device.

[0005] This utility model is achieved through the following technical solution:

[0006] A battery cell separator conveying device includes a support, an active guide roller, a pressure roller, and a pressure roller adjusting assembly. The active guide roller rotates around an axis on the support. The axis of the pressure roller is parallel to the axis of the active guide roller. The pressure roller adjusting assembly drives the pressure roller to slide relative to the active guide roller in a direction parallel to the axis of the active guide roller, and includes a lead screw and a slide block. The lead screw is mounted on the support and its axis is parallel to the axis of the active guide roller. The slide block is threadedly connected to the lead screw, and the pressure roller is mounted on the slide block.

[0007] Compared with the prior art, the battery cell diaphragm conveying device of this utility model can adjust the position between the active roller and the pressure roller, so that the pressure roller applies tension and traction force to the middle of the diaphragm, making the diaphragm less prone to deviation and reducing the occurrence of defective products.

[0008] Furthermore, the pressure roller adjustment assembly also includes a lifting frame, which moves up and down between the slide and the active guide roller, with the pressure roller mounted on the lifting frame. By adjusting the distance between the active guide roller and the pressure roller, the tension and traction of the diaphragm can be adjusted, reducing the possibility of diaphragm breakage.

[0009] Furthermore, the pressure roller adjustment assembly also includes a cylinder, the piston rod of which abuts against the lifting frame to achieve the lifting and lowering of the lifting frame.

[0010] Furthermore, the pressure roller adjustment assembly also includes a guide rail mounted on the bracket. The extension direction of the guide rail is parallel to the axis of the active roller and engages with the slide block to guide the movement of the slide block and make its sliding more stable.

[0011] Furthermore, the pressure roller adjustment assembly also includes a handle, which is fixed to one end of the lead screw to improve the convenience of turning the lead screw by hand.

[0012] Furthermore, the length of the pressure roller is one-third of the length of the active guide roller, so as to facilitate the movement of the pressure roller relative to the active guide roller.

[0013] Furthermore, it also includes a drive motor, which is mounted on the bracket and drives the active roller to rotate, thereby achieving smooth rotation of the active roller.

[0014] Furthermore, it also includes a controller, which is electrically connected to the drive motor and the cylinder respectively to realize automated production.

[0015] Furthermore, the controller is equipped with a detector, which is installed on the lifting frame to detect the width of the diaphragm, etc., to ensure that the pressure roller can be positioned in the middle of the diaphragm, etc.

[0016] Furthermore, the controller is also equipped with a pressure sensor; the pressure sensor is mounted on the pressure roller to detect the tension and traction forces applied to the diaphragm or the like.

[0017] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the battery cell diaphragm conveying device of this utility model from one viewing angle.

[0019] Figure 2 This is a schematic diagram of the overall structure of the battery cell diaphragm conveying device of this utility model from another perspective.

[0020] Figure 3 for Figure 1 A magnified view of a portion at point A. Detailed Implementation

[0021] In response to existing defects in lithium batteries, the applicant conducted research on the traditional lithium-ion battery production process and found that in current lithium battery cell manufacturing, the winding process uses a winding needle to stack and roll the positive electrode sheet, separator, and negative electrode sheet into a non-hollow roll according to a certain pattern. Therefore, the electrode sheets and separator are arranged around the winding needle mechanism as raw materials for unwinding. Due to space limitations, a large number of electrode sheets and separator raw materials cannot be placed near the winding needle mechanism individually, requiring a traction device to transport them over long distances. Furthermore, during the winding process, the separator must accurately isolate adjacent electrode sheets to prevent short circuits, while also applying a certain tension to prevent the cell from unraveling, and avoiding excessive tension that could damage the separator and prevent it from isolating the electrode sheets. Therefore, the position and magnitude of the traction force applied to the separator and other components during transport by the traction device have a significant impact on the effectiveness of the winding process.

[0022] In response to the above findings, the applicant provides a battery cell diaphragm conveying device that ensures that tension and traction are always applied to the center of the diaphragm along its width during conveying, preventing the diaphragm from deviating. Furthermore, the tension and traction can be adjusted via a pressure regulating component to ensure the tension remains within a suitable range. The following describes a specific embodiment of the battery cell diaphragm conveying device using the conveying of the diaphragm as an example:

[0023] Please refer to the following: Figure 1 and Figure 2 The battery cell separator conveying device of this case includes a support 10, a drive motor 20 mounted on the support 10, an active guide roller 30, a pressure roller 40, a pressure roller adjustment assembly 50, and a controller (not shown).

[0024] The bracket 10 includes mounting blocks 11, a base plate 12, and a back plate 13. The base plate 12 faces upward, and the two mounting blocks 11 are respectively disposed on opposite sides of the base plate 12. The back plate 13 is mounted on the base plate 12 and connected between the two mounting blocks 11 to form a receiving space. The active roller 30 is located in the receiving space, mounted between the two mounting blocks 11, and can rotate around an axis parallel to the surface of the base plate 12.

[0025] The drive motor 10 is mounted on the mounting block 11 on one side and located outside the accommodating space. Its output shaft axis is parallel to the axis of the active roller 30 and is connected to the active roller 30 through a coupling or the like, driving the active roller 30 to rotate around the axis.

[0026] The pressure roller 40 is located within the receiving space and close to the active guide roller 30, with its axis parallel to the axis of the active guide roller 30. The length of the pressure roller 40 is less than the length of the active guide roller 30 to facilitate axial movement within the receiving space. In this embodiment, the length of the pressure roller 40 is one-third the length of the active guide roller 30. Preferably, the pressure roller 40 is located directly below the active guide roller 30, projected along the axis of the active guide roller 30, and the line connecting the centers of the pressure roller 40 and the active guide roller 30 is perpendicular to the surface of the base plate 12.

[0027] Please see Figure 3The pressure roller adjusting assembly 50 is used to drive the pressure roller 40 to move along a direction parallel to the axis of the active guide roller 30, and to move it radially closer to or further away from the active guide roller 30. It includes a lead screw 51, a slide 52, a cylinder 53, a lifting frame 54, a guide rail 55, and a support base 56. The support base 56 is disposed opposite to the base plate 12 and close to the mounting block 11. The lead screw 51 is located in front of the back plate 13, with both ends threadedly connected to the support base 56. It extends between the two support bases 56 along a direction parallel to the axis of the active guide roller 30 and can rotate about an axis relative to the bracket 10. The slide 52 is sleeved on the lead screw 51 and threadedly connected to it. When the lead screw 51 rotates, the slide 52 slides along the lead screw 51. The cylinder 53 includes a body 531, a regulating valve 532, and a piston rod (not shown). The body 531 is mounted on the slide 52. The regulating valve 532 is located on a mounting block 11 on one side and connected to the body 531 via an air pipe. The regulating valve 532 can regulate the airflow into and out of the body 531. The piston rod extends from the body 531 and extends and retracts toward the active roller 30. The lifting frame 54 abuts against the piston rod of the cylinder 53 and is located between the slide 52 and the active roller 30. As the piston rod extends and retracts, the lifting frame 54 pushes up and moves closer to the active roller 30, or descends away from the active roller 30 under the action of gravity. The pressure roller 40 is mounted on the lifting frame 54. Preferably, there are two piston rods arranged along the axial direction of the active roller 30, so that they are subjected to a uniform thrust from the lifting frame 54. The guide rail 55 is mounted on the back plate 13 facing the lead screw 51, extending between the two mounting blocks 11 along a direction parallel to the axis of the active roller 30. One side of the slide block 52 is threadedly connected to the lead screw 51, and the other side engages with the guide rail 55, allowing for smoother sliding of the slide block 52. Furthermore, a handle 52 is fixedly connected to one end of the lead screw 51 on the outer side of the mounting block 11, allowing the user to rotate the lead screw 51 via the handle 52. The pressure roller 40 is located directly below the active roller 30, and the piston rod rises or falls vertically. Additionally, the lead screw 51 can also be rotated by a sliding motor (not shown) or similar means.

[0028] The controller is electrically connected to the cylinder 53, the drive motor 20, and the sliding motor to control the position of the pressure roller 40 relative to the active guide roller 30. Further, the controller includes a detector 61 and a pressure sensor 62. The detector 61 is mounted on the lifting frame 54 to detect the distance between the active guide roller 30 and the pressure roller 40, and to set the width of the diaphragm (not shown) on the battery cell diaphragm device, such that the pressure roller 40 is located at the center of the diaphragm 100 width. The detector 61 can be a laser rangefinder, infrared rangefinder, ultrasonic sensor, camera, etc., as described in the prior art. The pressure sensor 62 is mounted on the pressure roller 40 to detect the pressure on the pressure roller 40. The controller can adjust the distance between the active guide roller 30 and the pressure roller 40 based on the pressure value measured by the pressure sensor 62, thereby adjusting the pressure on the diaphragm.

[0029] When the battery cell separator conveying device of this utility model is in operation, under the control of the controller, the drive motor 20 drives the active guide roller 30 to rotate around the axis, or the handle 52 can be rotated manually or by the sliding motor, and the lead screw 51 rotates accordingly, causing the slide block 52 to slide along the lead screw 51. The detector 61 detects the width of the separator and moves the pressure roller 40 to the middle of the separator width direction. The piston rod of the cylinder 53 pushes the lifting frame 54, causing the pressure roller 40 to move closer to the active guide roller 30, and adjusts the distance between the active guide roller 30 and the pressure roller 40 according to the pressure value measured by the pressure sensor 62. The separator is pulled under the action of friction.

[0030] Compared with existing technologies, the battery cell diaphragm conveying device of this invention has the following advantages:

[0031] 1. The pressure roller can apply uniform tension and traction force to the middle of the diaphragm, making the diaphragm less prone to deviation and resulting in high product quality;

[0032] 2. The pressure roller applies appropriate pressure to the diaphragm so that the diaphragm does not slip or easily break.

[0033] 3. The pressure rollers are highly mobile and stable;

[0034] 4. It can realize automated production.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0036] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A battery cell diaphragm conveying device, characterized in that, include: support; An active guide roller, which rotates about an axis on the support; A pressure roller, the axis of which is parallel to the axis of the drive roller; as well as A pressure roller adjusting assembly, which drives the pressure roller to slide relative to the active guide roller in a direction parallel to the axis of the active guide roller, includes a lead screw and a slide block; the lead screw is mounted on the bracket and its axis is parallel to the axis of the active guide roller; the slide block is threadedly connected to the lead screw, and the pressure roller is mounted on the slide block.

2. The cell separator conveying device according to claim 1, characterized in that: The pressure roller adjustment assembly also includes a lifting frame, which moves up and down between the slide and the active guide roller, and the pressure roller is mounted on the lifting frame.

3. The cell separator conveying device according to claim 2, characterized in that: The pressure roller adjustment assembly also includes a cylinder, the piston rod of which abuts against the lifting frame.

4. The cell separator conveying device according to claim 3, characterized in that: The pressure roller adjustment assembly also includes a guide rail mounted on the bracket, the guide rail extending parallel to the axis of the active roller and engaging with the slide block.

5. The cell separator conveying device according to claim 4, characterized in that: The pressure roller adjustment assembly also includes a handle, which is fixed to one end of the lead screw.

6. The cell separator conveying device according to claim 1, characterized in that: The length of the pressure roller is one-third of the length of the active roller.

7. The cell separator conveying device according to claim 3, characterized in that: It also includes a drive motor, which is mounted on the bracket and drives the active roller to rotate.

8. The cell separator conveying device according to claim 7, characterized in that: It also includes a controller, which is electrically connected to the drive motor and the cylinder respectively.

9. The cell separator conveying device according to claim 8, characterized in that: The controller is equipped with a detector, which is mounted on the lifting frame.

10. The cell separator conveying device according to claim 9, characterized in that: The controller is also equipped with a pressure sensor; the pressure sensor is mounted on the pressure roller.

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