CN220358159U - Winding device - Google Patents

Abstract

The application relates to the technical field of battery cell winding, in particular to a winding device. Including bear the seat, rotatable set up in bear the needle of rolling up of seat top and can be oriented first running roller and two at least second running rollers that the needle removed are rolled up, first running roller set up in bear the seat and be located roll up the needle below, it is located to roll up the needle between first running roller and the second running roller, the diameter of first running roller is greater than the diameter of second running roller. And when the coiled material is coiled by the coiling needle, the first roller and the two second rollers can move towards the coiling needle, and then the first roller and the two second rollers are respectively abutted to the coiled material at the periphery of the coiling needle, so that the anode and the cathode are tightly attached to the diaphragm in the coiling process, the coiling quality is improved, and the quality of a finished battery cell is further improved.

Description

Winding device

Technical Field

The application relates to the technical field of battery cell winding, in particular to a winding device.

Background

In the production of the battery cell, after the sequence of the negative electrode plate, the diaphragm and the positive electrode plate is overlapped, the coiled material is required to be coiled into a winding core, and the coiled material is normally coiled into the winding core through a winding needle by the existing winding machine, however, in the winding process, the positive electrode plate, the negative electrode plate and the diaphragm are easy to generate gaps to cause lithium precipitation, the winding quality is poor, and the potential safety hazard of internal short circuit of the battery is easy to generate.

Disclosure of Invention

In order to solve the technical problem, the application provides a winding device, including bear the seat, rotatable set up in bear the needle of rolling up of seat top and can be directed against first running roller and two at least second running rollers that the needle removed, first running roller set up in bear the seat and be located roll up the needle below, the needle of rolling up is located between first running roller and the second running roller, the diameter of first running roller is greater than the diameter of second running roller.

Preferably, an auxiliary pressing roller is further arranged on one side of the second roller.

Preferably, the device further comprises a first driving assembly, wherein the first driving assembly is used for driving the second roller and the auxiliary pressing roller to move up and down.

Preferably, the two sides of the bearing seat are provided with a pressing plate and a first driver for driving the pressing plate to lift.

Preferably, the bearing seat is provided with a second driving component for driving the first roller to move towards the winding needle.

Preferably, the device further comprises a rotary driving piece for driving the winding needle to rotate.

Preferably, limiting plates are further arranged on two opposite sides of the bearing seat.

From the above, the following beneficial effects can be obtained by applying the present application: through bearing seat top rotatable be provided with the book needle, bear the seat and be located and roll up the needle below and be provided with first running roller, be provided with two at least second running rollers in a roll needle top, it is located between first running roller and the second running roller to roll up the needle, the diameter of first running roller is greater than the diameter of second running roller, and then when the coiled material is rolled up to the needle, can move towards the book needle through first running roller and two second running rollers, and then make first running roller and two second running rollers butt respectively in the coiled material of needle periphery, make the positive negative pole of coiling in-process closely laminate with the diaphragm, improve the coiling quality, and then improve electric core finished product quality.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings that are used in the description of the embodiments of the present application or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic view of a winding device according to an embodiment of the present application;

fig. 2 is a perspective view of a winding device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Examples

In order to solve the above-mentioned technical problems, as shown in fig. 1-2, the present embodiment provides a winding device, including a bearing seat 10, where the bearing seat 10 is used for bearing a coiled material with a negative electrode sheet, a separator and a positive electrode sheet stacked, a winding needle 20 is rotatably disposed above the bearing seat 10, a first roller 40 is disposed below the bearing seat 10 and the winding needle 20, at least two second rollers 30 are disposed above the winding needle 20, the winding needle 20 is disposed between the first roller 40 and the second roller 30, the diameter of the first roller 40 is greater than the diameter of the second roller 30, and when the winding needle 20 winds the coiled material, the first roller 40 and the two second rollers 30 can move towards the winding needle 20, so that the first roller 40 and the two second rollers 30 are respectively abutted to the coiled material at the periphery of the winding needle 20, the positive electrode and the negative electrode are tightly attached to the separator in the winding process, and the winding quality of the battery core is improved.

Further, in the above-described scheme, an auxiliary pressing roller 60 is further provided at the side of the second roller 30. After being wound into a winding core, the auxiliary pressing roller 60 is pressed at the tail end of the coiled material, so that the tail end part of the coiled material is prevented from tilting, the winding effect of the coiled material is effectively improved, and the loosening of the winding core is prevented.

The device further comprises a first driving assembly 31, wherein the first driving assembly 31 is used for driving the second roller 30 and the auxiliary pressing roller 60 to move up and down. For example, the first driving component 31 may be an air cylinder, the driving end of the first driving component 31 is connected to the second roller 30, and the auxiliary pressing roller 60 is located on one side of the second roller 30, so as to drive the second roller 30 to move towards the winding needle 20 through the first driving component 31.

Further, the negative electrode sheet, the separator and the positive electrode sheet are sequentially placed on the bearing seat 10, and the two sides of the bearing seat 10 are provided with a pressing plate 51 and a first driver 52 for driving the pressing plate 51 to lift. The first driver 52 may be a push rod, the end of the push rod is connected with an air cylinder, and after the diaphragm is placed on the bearing seat 10, the first driver 52 drives the pressing plate 51 to press down the diaphragm on the bearing seat 10, so that the diaphragm is limited. Limiting plates 11 are further arranged on two opposite sides of the bearing seat 10, and the positive plate and the negative plate are limited through the limiting plates 11.

Further, the carrying seat 10 is provided with a second driving assembly 41 for driving the first roller 40 to move towards the winding needle 20. The second driving component 41 can be an air cylinder, the driving end of the second driving component 41 is connected to the first roller 40, and then the first roller 40 is driven to move towards the roller 20 by the second driving component 41 when the roller 20 is wound, and the first roller 40 and the second roller 30 are matched to enable the positive electrode and the negative electrode to be tightly attached to the diaphragm in the winding process, so that the winding quality is improved.

In the above-described embodiment, the rotary driving member 21 for driving the winding needle 20 to rotate is further included. For example, the rotary driving member 21 may be a motor, and a rotating end of the motor is connected to the winding needle 20 by means of a rotating wheel and a belt, so that the winding needle 20 is driven to rotate by the rotary driving member 21 to complete the winding motion.

To sum up, this application scheme is through bearing the seat top rotatable be provided with the book needle, bear the seat and be located and roll up the needle below and be provided with first running roller, be provided with two at least second running rollers above the book needle, it is located between first running roller and the second running roller to roll up the needle, the diameter of first running roller is greater than the diameter of second running roller, and then when the coiled material is rolled up to the book needle, can move towards the book needle through first running roller and two second running rollers, and then make first running roller and two second running rollers butt respectively in the coiled material of needle periphery, make the positive negative pole and the inseparable laminating of diaphragm in the coiling process, improve the coiling quality, and then improve electric core finished product quality.

The above-described embodiments do not limit the scope of the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above embodiments should be included in the scope of the present utility model.

Claims (7)

1. A winding device, characterized in that: including bear seat (10), rotatable set up in bear needle (20) of seat (10) top and can be oriented first running roller (40) and two at least second running roller (30) that needle (20) removed, first running roller (40) set up in bear seat (10) and be located needle (20) below, needle (20) are located between first running roller (40) and second running roller (30), the diameter of first running roller (40) is greater than the diameter of second running roller (30).

2. The winding device according to claim 1, wherein: an auxiliary pressing roller (60) is further arranged on one side of the second roller (30).

3. The winding device according to claim 2, characterized in that: the device further comprises a first driving assembly (31), wherein the first driving assembly (31) is used for driving the second roller (30) and the auxiliary pressing roller (60) to move up and down.

4. The winding device according to claim 1, wherein: the two sides of the bearing seat (10) are provided with pressing plates (51) and a first driver (52) for driving the pressing plates (51) to lift.

5. The winding device according to claim 1, wherein: the bearing seat (10) is provided with a second driving component (41) for driving the first roller (40) to move towards the winding needle (20).

6. The winding device according to claim 1, wherein: and the rotary driving piece (21) is used for driving the winding needle (20) to rotate.

7. The winding device according to claim 1, wherein: limiting plates (11) are further arranged on two opposite sides of the bearing seat (10).