KR20100026774A - An apparatus for winding for a secondary battery - Google Patents

Abstract

PURPOSE: An apparatus for winding a battery roll for a secondary battery is provided to consecutively prepare an electrode roll while a plurality of mandrels revolve on its axis and other axis, and to improve productivity. CONSTITUTION: An apparatus for winding a battery roll for a secondary battery comprises: a rotating plate(20) which rotates in a constant angle; a plurality of mandrels(21,22,23) with combination grooves coupled with the ends of a positive electrode plate(11), a first separator(13), a negative plate(12), and a second separator(14); first and second fixing rollers(51,52) which is positioned at the upper part of a rotational plate and enables rotation; first and second moving rollers(61,62) which is contacted with or separated from the first and second fixing rollers; first and second clamps(31,32); first and second cutters(41,42); a third cutter; and an ejector.

Description

Battery roll winding device of a secondary battery {An apparatus for winding for a secondary battery}

The present invention relates to a battery roll winding apparatus of a secondary battery, and more particularly, to a battery roll winding apparatus of a secondary battery which shortens the manufacturing time of the battery roll by winding the battery unit continuously in the shape of a square or a cylindrical shape.

In general, a secondary battery is a battery that can be charged and discharged unlike a primary battery that cannot be charged, and is widely used in advanced electronic devices such as a cellular phone, a notebook computer, and a camcorder.

In particular, lithium secondary batteries have an operating voltage of 3.6V, which is three times higher than nickel-cadmium batteries or nickel-hydrogen batteries, which are widely used as portable electronic equipment power sources, and is rapidly increasing in terms of high energy density per unit weight. to be.

Such lithium secondary batteries are manufactured in various shapes, and typical shapes include cylindrical, square, and pouch types.

1 illustrates a battery roll 10 of a general lithium secondary battery. The battery roll 10 is interposed between the positive electrode plate 11, the negative electrode plate 12, the positive electrode plate 11 and the negative electrode plate 12

It consists of the separators 13 and 14. The positive electrode plate 11, the negative electrode plate 12, and the separators 13 and 14 each consist of one strip.

The battery roll 10 having the structure as described above has an outer shape cylindrical or wound by fixing the front end portions to the mandrel in a state in which the positive electrode plate 11, the separator 13, the negative electrode plate 12, and the separator 14 are disposed. It is manufactured in the form of a square or the like.

An object of the present invention is to provide an electrode roll winding device for a secondary battery, which can shorten the time for manufacturing an electrode roll by binding to a mandrel while continuously unwinding a positive electrode plate, a negative electrode plate, and a separator rolled in a roll shape. have.

In the present invention to achieve the above object in the electrode roll winding device of a secondary battery for winding each of the positive electrode plate, the first separator, the negative electrode plate and the second separator rolled in roll shape sequentially,

A rotating plate that rotates intermittently by a predetermined angle about the rotation axis;

A plurality of mandrels each of which revolves around the rotating shaft and is rotatably coupled to the front surface of the rotating plate and has coupling grooves formed at the front end thereof to which the front ends of the positive plate, the first separator, the negative plate and the second separator are coupled;

First to rotate the rotating plate to a first position where the distal ends of the positive electrode plate, the first separator, the negative electrode plate and the second separator are coupled to the coupling groove, and the second position where the electrode roll wound on the mandrel is ejected. A drive source;

A second driving source which self-rotates the mandrel such that the positive plate, the first separator, the negative plate and the second separator are wound;

A first fixed roller positioned on the rotating plate and rotatably provided;

A second fixed roller provided adjacent to the first fixed roller and rotatable;

A first moving roller provided to be movable and rotatable to be in contact with or separated from the first fixed roller;

A second moving roller provided to be movable and rotatable to be in contact with or separated from the second fixed roller;

The positive electrode plate and the first separator are guided between the first fixed roller and the first moving roller, and the negative electrode plate and the second separator are guided between the second fixed roller and the second moving roller, and the mandrel coupling groove of the first position is provided. Coupled to the guide means;

A first clamp reciprocating to clamp the positive plate to position the tip of the positive plate between the first fixed roller and the first moving roller;

 A second clamp reciprocating to clamp the negative electrode plate so as to position the tip of the negative electrode plate between the second fixed roller and the second moving roller;

A first cutter for cutting the positive electrode plate while the first moving roller contacts the first fixed roller to bite the positive plate;

A second cutter for cutting the negative electrode plate while the second moving roller contacts the second fixed roller to bite the negative electrode plate;

A third cutter for winding the mandrel at the first position to form an electrode roll and then cutting the first and second separators at a position deviated from the first position;

And an ejector for ejecting the electrode roll while the mandrel on which the electrode roll is formed is positioned at the second position.

The guide means is provided with a pair of guide rollers which are located directly above the coupling groove of the mandrel to enter the ends of the positive plate, the first separator, the negative plate and the second separator.

In addition, the present invention winding device is a reciprocating movement in the traveling direction of the bipolar plate by a first motor, a first guide rail for sliding guide the first clamp is formed on the upper surface, the end of the first guide rail A first bracket provided with a first cutter;

A second motor reciprocating the first clamp along the first guide rail;

A second guide rail reciprocated in the traveling direction of the negative electrode plate by a third motor, the second clamp being guided by sliding of the second clamp, and a second cutter provided at an end side of the second guide rail; 2 brackets;

And a fourth motor reciprocating the second clamp along the second guide rail, wherein the first and second brackets are moved in the driving direction, respectively, while the first and second clamps clamp the positive and negative plates, respectively. At the same time, the first and second clamps are moved along the first and second guide rails, respectively, so that the tip of the positive plate enters between the first moving roller and the first fixed roller, and the tip of the negative plate moves to the second. In the state entered between the roller and the second fixed roller, the clamping force of the first and second clamps is released to be wound by the rotation of the mandrel, and the first and second after the mandrel is rotated at a set rotational speed. The clamps clamp the positive and negative plates, respectively, and the first and second cutters are configured to cut the positive and negative plates while moving at the same speed as that of the positive and negative plates or the separator. The.

In the present invention, the winding device rotates and rotates a plurality of mandrels to continuously manufacture electrode rolls, thereby improving productivity.

In addition, the first and second brackets are reciprocated, and the first and second clamps mounted on the first and second brackets and the first and second cutters are movably installed to thereby move the first and second brackets during the movement of the first and second brackets. Since the cutting of the positive electrode plate and the negative electrode plate is possible by the cutter, the battery roll manufacturing speed can be made faster than before.

2 schematically shows an electrode roll winding apparatus of a secondary battery according to an embodiment of the present invention.

As shown in FIG. 1, the electrode roll 10 wound by the present invention winding device is formed by sequentially stacking the positive electrode plate 11, the first separator 13, the negative electrode plate 12, and the second separator 14. Has a structure.

Winding device of the embodiment of the present invention for producing such an electrode roll 10 and the rotary plate 20 is rotated intermittently by a predetermined angle about the rotation axis 24; Revolved around the rotating shaft 24, respectively, and coupled to the front of the rotating plate 20 so that the positive electrode plate 11, the first separator 13, the negative electrode plate 12 and the second separator ( 14 are provided with a plurality of mandrels 21, 22, and 23 having coupling grooves 21a to which the ends of the blade 14 are coupled.

Referring to FIGS. 8 and 9, the rotary plate 20 may include a first position where the ends of the positive electrode plate, the first separator, the negative electrode plate, and the second separator are coupled to the coupling groove 21a, and wound on the mandrel. The electrode roll 10 is rotated about the rotating shaft 24 by a first driving source (not shown) to a second position ejected by the ejector 80.

Each of the mandrels 21, 22, and 23 are self-rotated by a second driving source (not shown) so that the positive electrode plate 11, the first separator 13, the negative electrode plate 12, and the second separators 14 are wound. Be sure to

That is, each of the mandrel (21, 22, 23) is to rotate while rotating around the rotation axis (24).

In addition, as shown in FIG. 10, the reciprocating movement is possible in the front and rear of the rotating plate 20 by a cylinder not shown. ) Will be combined.

On the other hand, the first and second fixed rollers 51 and 52 are rotatably supported on a frame (not shown) on the upper portion of the rotating plate 20, and for each of the first and second fixed rollers 51 and 52, respectively. The first and second moving rollers 61 and 62 are provided to be movable and rotatable so as to be contactable or detachable.

The positive electrode plate 11 and the first separator 13 are guided between the first fixed roller 51 and the first moving roller 61, and between the second fixed roller 52 and the second moving roller 62. The negative electrode plate 11 and the second separator 14 are guided to be coupled to the mandrel coupling groove 21a at the first position by guide means.

The guide means is located directly above the coupling groove 21a of the mandrel 21 positioned at the first position, so that the positive electrode plate 11, the first separator 13, the negative electrode plate 12, and the second separator 14 are positioned. A pair of guide rollers (71, 72) is entered into the tip of the.

On the other hand, the first reciprocating movable to position the tip of the positive electrode plate 11 between the first fixed roller 51 and the first moving roller 61 by clamping the end of the positive electrode plate 11 rolled in the form of a roll A clamp 31; A second clamp 32 capable of reciprocating is provided to clamp the negative electrode plate 12 to position the tip of the negative electrode plate 12 between the second fixed roller 52 and the second moving roller 62.

In addition, the first cutter 41 for cutting the positive electrode plate 11 while the first moving roller 61 is in contact with the first fixed roller 51 to bite the positive plate (11); The second moving roller 62 is provided with a second cutter 42 for cutting the negative electrode plate 12 while being in contact with the second fixed roller 52 to bite the negative electrode plate 12.

Referring to FIG. 7, after winding the first mandrel 21 at the first position to form the electrode roll 10, the first and second separators 13 and 14 are separated from the first position. ) Is provided with a third cutter 43 for cutting.

The winding device of the above configuration is operated as follows.

First, as shown in FIG. 2, the first and second clamps 31 and 32 are engaged in a state where the first and second separators 13 and 14 are caught in the engaging groove 21a of the first mandrel 21. ) Are respectively moved by holding the positive electrode plate 11 and the negative electrode plate 12 to enter between the rollers 51, 61 and the rollers 52, 62.

Referring to FIG. 3, when the front ends of the positive electrode plate 11 and the negative electrode plate 12 are positioned between the rollers 51 and 61 and the rollers 52 and 62, respectively, the first and second moving rollers 61 ( 62 are moved to be in close contact with the first and second fixed rollers 51 and 52, respectively.

In this state, as shown in FIG. 4, the first and second clamps 31 and 32 are returned to their original positions with the clamping released, and the first mandrel 21 is rotated by the number of rotations set clockwise. The positive electrode plate 11, the first separator 13, the negative electrode plate 12, and the second separator 14 are wound.

As shown in FIG. 5, when the electrode roll 10 is formed on the first mandrel 21, the rotation of the first mandrel 21 is stopped, and the first and second clamps 31 and 32 are formed on the positive electrode plate ( 11) and the first and second cutters 41 and 42 are operated while the negative electrode plate 12 is clamped to cut the positive electrode plate 11 and the negative electrode plate 12, and as shown in FIG. 21) is rotated to wind the remainder of the cutting end.

Subsequently, as shown in FIG. 7, the rotating plate 20 is rotated clockwise to be out of the first mandrel 21 from the first position, and the third cutter 43 is operated to operate the first and second separators 13 ( 14).

At this time, the second mandrel 22 moved to the first position is retracted to the rear of the rotating plate 20.

Subsequently, as shown in FIG. 8, when the rotating plate 20 is rotated clockwise to move the first mandrel 21 to the second position, the ejector 80 is wound around the first mandrel 21. The electrode roll 10 is ejected as the first mandrel 21 is retracted in the state of holding 10).

In addition, the second mandrel 22, which has been retracted from the first position, protrudes forward of the rotating plate 20, and the first and second separators 13 and 14 are coupled to the coupling groove. That is, the initial position as shown in FIG.

On the other hand, Figures 11a to 11f shows another embodiment of the winding device of the present invention.

This clamps the positive electrode plate 11 and the negative electrode plate 12 with the first and second clamps 31 and 32, respectively, so that the first and second fixed rollers 51 and 52 and the first and second movable rollers 61, The modification of the part to supply and cut between 62 is shown.

Hereinafter, only the modification part will be described, and other parts are the same as the above embodiment, and thus detailed description thereof will be omitted.

In addition, since the structure of the modified example of the positive electrode plate 11 side and the negative electrode plate 12 side is the same, in FIG. 11, the modified example of the positive electrode plate 11 side is shown, and the code | symbol is shown together at the negative electrode plate 12 side. .

The first bracket 120 is provided on the driving path of the positive electrode plate 11 so as to reciprocate in the traveling direction of the positive electrode plate 11 by the first motor 110.

The first guide rail 121 is formed on the upper surface of the first bracket 120 to guide the first clamp 31 by a second motor (not shown), and the first guide rail 121 is formed. The first cutter 41 is provided on the end side of the.

In addition, the second bracket 140 is provided on the driving path of the negative electrode plate 12 so as to reciprocate in the traveling direction of the negative electrode plate 12 by the third motor 130.

A second guide rail 141 is formed on the upper surface of the second bracket 140 to guide the second clamp 32 by a fourth motor (not shown), and the second guide rail 141 is formed. The second cutter 42 is provided on the end side of the.

11A and 11B, the first and second brackets are provided in the state in which the first and second clamps 31 and 32 clamp the positive electrode plate 11 and the negative electrode plate 12, respectively. 120 and 140 are moved in the driving direction by the first and third body 110 and 130, respectively.

At the same time, the first and second clamps 31 and 32 are moved along the first and second guide rails 121 and 141, respectively, so that the front end of the positive electrode plate 11 is moved between the first moving roller 61 and the first. The first fixed roller 51 enters and the tip of the negative electrode plate 12 enters between the second moving roller 62 and the second fixed roller 52.

Subsequently, as shown in FIG. 11C, the clamping force of the first and second clamps 31 and 32 is released and the positive electrode plate 11 and the negative electrode plate 12 are wound by the rotation of the mandrel 21.

While the mandrel 21 is rotated so that the positive electrode plate 11 and the negative electrode plate 12 are wound, as shown in FIG. 11D, the first and second brackets 120 and 140 are retracted, and the mandrel 21 is retracted. After being rotated at the set speed, the first and second clamps 31 and 32 clamp the positive and negative plates 11 and 12, respectively, and advance along the first and second guide rails 121 and 141, respectively. The first and second cutters 41 and 42 cut the positive and negative plates, respectively.

Subsequently, as in FIG. 11F, the operation after FIG. 11B is repeated to manufacture the electrode roll.

In the above modification, the first and second brackets are reciprocated, and the first and second clamps mounted on the first and second brackets and the first and second cutters are movably installed, thereby moving the first and second brackets. Since the first and second cutters enable cutting of the positive electrode plate and the negative electrode plate, the battery roll manufacturing speed can be faster than before.

1 is a perspective view showing an electrode roll of a secondary battery,

2 to 8 is a schematic operation diagram illustrating an operating state of the winding device,

9 is a perspective view illustrating a state in which the front ends of the positive electrode plate, the first separator, the negative electrode plate, and the second separator are coupled to the mandrel;

10 is a cross-sectional view illustrating an operating state of the mandrel with respect to the rotating plate;

11A-11F show main part operation of another embodiment.

Claims (3)

In the electrode roll winding apparatus of the secondary battery which winds the positive plate, the first separator, the negative electrode plate, and the second separator, which are rolled in roll shapes, respectively, sequentially A rotating plate 20 intermittently rotated by a predetermined angle about the rotation shaft 24; A plurality of revolving grooves are respectively revolved about the rotating shaft 24 and are rotatably coupled to the front surface of the rotating plate 20 and have coupling grooves at which ends of the positive electrode plate, the first separator, the negative electrode plate, and the second separator are coupled to each other. Mandrel (21, 22, 23) of; The rotary plate 20 is rotated to a first position where the ends of the positive electrode plate, the first separator, the negative electrode plate, and the second separator are coupled to the coupling groove, and the second position where the electrode roll wound on the mandrel is ejected. A first driving source to make; A second driving source which self-rotates the mandrel such that the positive plate, the first separator, the negative plate and the second separator are wound; A first fixing roller (51) positioned on the rotating plate (20) and rotatably provided; A second fixed roller (51) (52) provided to be rotatable adjacent to the first fixed roller (51); A first moving roller (61) provided to be movable and rotatable to be in contact with or separated from the first fixed roller (51); A second moving roller 62 movable and rotatably provided to be in contact or separated with respect to the second fixed roller 52; The positive electrode plate 11 and the first separator 13 are guided between the first fixed roller 51 and the first moving roller 61, and between the second fixed roller 52 and the second moving roller 62. The negative electrode plate 11 and the second separator 14 are guided and coupled to the mandrel coupling groove at the first position by guide means; A first clamp (31) capable of reciprocating to clamp the positive electrode (11) to position the tip of the positive electrode (11) between the first fixed roller (51) and the first moving roller (61);  A second clamp 32 capable of reciprocating to clamp the negative electrode plate 12 so as to position the tip of the negative electrode plate 12 between the second fixed roller 52 and the second moving roller 62; A first cutter (41) for cutting the positive electrode (11) while the first moving roller (61) contacts the first fixed roller (51) and bites the positive electrode (11); A second cutter 42 for cutting the negative electrode plate 12 while the second moving roller 62 contacts the second fixed roller 52 to bite the negative plate 12; A third cutter 43 wound around the mandrel at the first position to form the electrode roll 10 and then cutting the first and second separators 13 and 14 at a position deviated from the first position; ; And an ejector (80) for ejecting the electrode roll in a state where the mandrel having the electrode roll (10) is positioned at the second position. 2. The guide means according to claim 1, wherein the guide means has a pair of guide rollers (71) (72), which are located directly above the coupling groove of the mandrel, into which the ends of the positive electrode plate, the first separator, the negative electrode plate, and the second separator enter. Electrode roll winding device of a secondary battery, characterized in that. The first guide rail 121 of claim 1 or 2, wherein the first guide rail 121 is reciprocated in the traveling direction of the positive electrode plate 11 by the first motor 110, and the first clamp 31 is slidably guided on an upper surface thereof. A first bracket (120) formed at the end side of the first guide rail (121) and the first cutter (41) provided thereon; A second motor reciprocating the first clamp 31 along the first guide rail 121; A second guide rail 141 is reciprocated in the traveling direction of the negative electrode plate 12 by the third motor 130, and the second clamp 32 is slidably guided on an upper surface thereof, and the second guide rail is formed. A second bracket 140 provided with the second cutter 42 on an end side of the 141; And a fourth motor for reciprocating the second clamp 32 along the second guide rail 141. The first and second brackets are moved in the driving direction while the first and second clamps clamp the positive and negative plates, respectively, and the first and second clamps are moved along the first and second guide rails, respectively. A tip enters between the first moving roller 61 and the first fixed roller 51 and a tip of the negative electrode plate enters between the second moving roller 62 and the second fixed roller 52. In this state, the clamping force of the first and second clamps is released to be wound by the rotation of the mandrel 21. After the mandrel 21 is rotated at the set speed, the first and second clamps are respectively connected to the positive electrode plate. Clamping the negative electrode plate, and the first and second cutters to cut the positive electrode plate and the negative electrode plate while moving at the same speed as the transfer rate of the positive electrode plate and the negative electrode plate or the separator, the electrode roll winding device of the secondary battery.

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