CN210074009U

CN210074009U - Pole lug flattening device in lithium battery pole roll manufacturing

Info

Publication number: CN210074009U
Application number: CN201921185119.5U
Authority: CN
Inventors: 全晓亮; 殷久山
Original assignee: China Aviation Lithium Battery Research Institute Co Ltd
Current assignee: AVIC Innovation Technology Research Institute (Jiangsu) Co.,Ltd.
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-02-14
Anticipated expiration: 2029-07-25

Abstract

The utility model provides a utmost point ear smooths device in preparation is rolled up to lithium cell utmost point, including setting up bearing roller and the gyro wheel of setting in the pole piece top in the pole piece below, the bearing roller axis is parallel or approximate parallel arrangement with the gyro wheel axis to the plane that gyro wheel central line and bearing roller central line constitute is divided into two parts with the utmost point book equalling of bearing roller, be equipped with felt and wind hole on the gyro wheel, the felt is the heliciform and arranges on the outer periphery of gyro wheel, the wind hole is located the edge of gyro wheel terminal surface periphery. The utility model discloses a wind pressure smooths the security high, and the cooperation is smoothed twice to wool felt and wind pressure, smooths the effect good.

Description

Pole lug flattening device in lithium battery pole roll manufacturing

Technical Field

The utility model relates to a lithium cell production technical field especially relates to a device is pacified to utmost point ear in preparation is rolled up to lithium cell utmost point.

Background

The lithium ion battery has the advantages of high output voltage, no memory effect and the like, is widely applied to the industries of mobile phones and electric automobiles at present, however, the waste in the manufacturing of the lithium ion battery is relatively serious, namely the scrapping of the battery caused by the wrinkle, the flanging and the crescent in the manufacturing of a lithium battery pole roll is relatively common.

The pole roll is a cylindrical short for the lithium battery pole piece to be rolled into a regular shape, an important process is that the pole roll is divided into two parts in the production process of the lithium battery, the purpose is to equally divide the pole roll into two pole rolls after the pole roll is subjected to die cutting, both sides of each pole roll are provided with pole lugs, and the pole roll with the pole lugs can be wrinkled, flanged and crescent-shaped due to self gravity or internal stress release and other reasons in the process of passing through a roller, so that the pole roll is scrapped.

In order to reduce the condition that the pole lugs form wrinkles, turned edges and crescent bends in the process of passing through the roller, a device for smoothing the pole lugs is added at the position where the pole coil with the pole lugs passes through the roller, so that scrapping of pole coil materials is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: in order to overcome not enough among the prior art, the utility model provides a device is pacified to utmost point ear in the preparation is rolled up to lithium cell utmost point, and the device can effectively smooth fold, turn-ups and the utmost point book of buckling.

The utility model provides a technical scheme that its technical problem will adopt is: the utility model provides a device is pacified to utmost point ear in lithium cell pole roll preparation, is including setting up the bearing roller in the pole piece below and setting up the gyro wheel in the pole piece top, be equipped with a plurality of wind holes that are located its both ends on the gyro wheel, the wind hole distributes in the edge of gyro wheel terminal surface periphery along the circumferencial direction, has an inclination between wind hole axial and the gyro wheel axial.

Preferably, the diameter of the roller is half of that of the carrier roller, and the roller acts on the middle part to the root part of the tab.

Preferably, the linear speed of the edge of the carrier roller is the same as the speed and the direction of the pole piece.

Preferably, the roller speed is twice of the idler roller speed, and the rotation direction is opposite to the idler roller rotation direction.

Preferably, the air quantity in the air holes is 1-2L/min.

Preferably, the idler axis is parallel to the roller axis.

Preferably, the plane formed by the roller centre line and the idler centre line bisects the pole roll on the idler into two equal parts.

Preferably, the inclination angle is 5 degrees.

Preferably, the inclination angle is 3 to 10 degrees.

Preferably, the roller is provided with a felt, and the felt is spirally arranged on the outer circumferential surface of the roller.

The wheel is a wheel-shaped part made of ABS materials, wool felt is fixed on the cylindrical surface of the wheel and has the advantages of being good in abrasive resistance, rich in elasticity and not prone to loosening, the wool felt is spirally arranged, the spiral direction of the wool felt is the same as the rotation direction of the wheel, and the wool felt aims to generate outward flattening force of the opposite pole piece for the pole ear.

When the lug flattening device operates, the linear velocity of the carrier roller is the same as that of a pole piece, and the angular velocity of the roller is in a multiple relation with that of the carrier roller, so that the relative friction among the roller, the pole piece and the carrier roller is reduced when the pole piece passes through the gap between the roller and the carrier roller. Preferably, the air quantity in the air holes is 1-2L/min.

According to the technical scheme, when the pole piece with the pole lug runs on the device, the root of the pole lug is subjected to outward flattening force relative to the pole piece, the head of the pole lug is subjected to outward wind pressure relative to the pole piece, and under the comprehensive action of the head of the pole lug and the head of the pole lug, the pole lug is flattened, so that the pole lug is prevented from being folded, turned over and bent in the crescent, and the rejection rate of the pole piece is reduced.

The utility model provides a device is pacified to utmost point ear in the preparation of lithium cell utmost point book compares with current similar technique, and its progress and beneficial effect that are showing lie in:

(1) the wind pressure smooths the security high: pole piece utmost point ear is extremely soft, and especially utmost point ear head, if the direct action contact of utmost point ear head smoothes the power, the tangential force that is difficult to control can increase the utmost point ear on the contrary and turn over the risk that turns over, so adopt the wind pressure to smooth at utmost point ear head.

(2) The twice smoothing cooperation has good smoothing effect: the strength of the root of the lug is higher than that of the head of the lug, the root is flattened by adopting a spiral wool felt, the flattening effect is strong, and the head is flattened by adopting wind pressure, but the flattening rebound can be inhibited.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a diagram of relative positions of the components provided in the embodiment of the present invention;

fig. 3 is a schematic view of an external structure of a roller according to an embodiment of the present invention;

fig. 4 is a sectional view of an air hole inside a roller according to an embodiment of the present invention.

In the figure: 1. the device comprises rollers, 2, lugs, 3, carrier rollers, 4, wool felt, 5, air holes, 6 and pole pieces.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

As shown in fig. 1-4, the utility model discloses a device is pacified to utmost point ear in lithium cell utmost point book preparation, including pole piece 6, bearing roller 3 and the gyro wheel 1 that has utmost point ear 2, the bearing of bearing roller 3 is in the below of pole piece 6, and gyro wheel 1 is located the top of pole piece 6, and utmost point ear 2 distributes at the both sides edge of pole piece 6, and gyro wheel 1 and bearing roller 3 have corresponding drive arrangement respectively to drive, drive arrangement is prior art, so no longer give unnecessary details here.

The roller 1 used by the utility model is made of cylindrical ABS material, the central line of the roller 1 is ensured to be parallel to the central line of the carrier roller 3 during installation, the central line is the axis, and the plane formed by the central line of the roller 1 and the central line of the carrier roller 3 equally divides the pole piece on the carrier roller 3 into two parts, as shown in figure 2; the roller 1 is provided with wool felt 4 and air holes 5 positioned at two ends of the wool felt 4, the wool felt 4 is spirally arranged on the outer circumferential surface of the roller 1, the spiral direction of the wool felt is as shown in figure 3, and the spiral direction is the same as the rotating direction of the roller 1; the air holes 5 are arranged in a plurality of numbers, the air holes 5 are located at the edge of the circumferential surface of the end face of the roller 1, the axial direction of the air holes 5 and the axial direction of the roller 1 form an inclination angle of 3-10 degrees, and as shown in fig. 4, the preferred angle is 5 degrees.

When the pole roll begins to feed, the pole piece 6 with the pole lug 2 translates on the carrier roller 3 under the action of external driving force, the carrier roller 3 synchronously moves under the action of the driving device, the linear velocity of the edge of the carrier roller 3 is the same as the material feeding speed and the material feeding direction of the pole piece 6, the pole piece 6 translates on the carrier roller 3 at the moment, the carrier roller 3 only provides supporting force, and the relative friction force between the pole piece 6 and the carrier roller 3 is small.

Adjust the 1 rotational speed of gyro wheel 1 the twice of the 3 rotational speeds of bearing roller above the bearing roller 3, the rotation direction of gyro wheel 1 is opposite with the rotation direction of bearing roller 3, the air output of wind hole 5 is transferred to 1 ~ 2L/min, slowly transfers low gyro wheel 1 position to felt 4 contact pole piece 6, and utmost point ear 2 is pacified under the effect of felt 4 and the wind pressure of gyro wheel 1 this moment.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a device is pacified to utmost point ear in preparation is rolled up to lithium cell pole, including setting up the bearing roller in the pole piece below and setting up the gyro wheel in the pole piece top, its characterized in that: the roller is provided with a plurality of air holes at two ends, the air holes are distributed on the edge of the end face of the roller along the circumferential direction, and an inclination angle is formed between the axial direction of the air holes and the axial direction of the roller.

2. The pole lug flattening device in the manufacture of a lithium battery pole roll according to claim 1, characterized in that: the diameter of the roller is one half of that of the carrier roller, and the roller acts on the middle part to the root part of the lug.

3. The pole lug flattening device in the manufacture of a lithium battery pole roll according to claim 2, characterized in that: the linear speed of the edge of the carrier roller is the same as the speed and the direction of the pole piece.

4. The pole lug flattening device in the manufacture of a lithium battery pole roll according to claim 3, characterized in that: the rotating speed of the roller is twice that of the carrier roller, and the rotating direction of the roller is opposite to that of the carrier roller.

5. The pole lug flattening device in the manufacture of a lithium battery pole roll according to claim 1, characterized in that: the air quantity in the air holes is 1-2L/min.

6. The pole lug flattening device in the manufacture of a lithium battery pole roll according to claim 1, characterized in that: the axis of the idler roller is parallel to the axis of the roller.

7. The pole lug flattening device in the manufacture of a lithium battery pole roll according to claim 6, characterized in that: the plane formed by the central line of the roller and the central line of the carrier roller equally divides the pole coil on the carrier roller into two parts.

8. The pole lug flattening device in the manufacture of a lithium battery pole roll according to claim 1, characterized in that: the inclination angle is 5 degrees.

9. The pole lug flattening device in the manufacture of a lithium battery pole roll according to claim 1, characterized in that: the inclination angle is 3-10 degrees.

10. The pole lug flattening device in the manufacture of a lithium battery pole roll according to claim 1, characterized in that: the wool felt is arranged on the roller and spirally arranged on the outer circumferential surface of the roller.