KR102635955B1 - Telescopic type electrode plate transfer device for secondary battery - Google Patents

Abstract

The disclosed telescopic type electrode plate transfer device for secondary batteries is installed between an alignment table and a stack table, picks up the electrode plates aligned on the alignment table, and places them on the stack table. The disclosed telescopic type electrode plate transfer device for secondary batteries includes a driving unit that generates a driving force necessary for transferring the electrode plates; An expansion unit that receives driving force from the drive unit and expands and contracts in multiple stages; and a picker mounted on the elastic portion to pick up and seat the electrode plate.

Description

Telescopic type plate transfer device for secondary batteries {TELESCOPIC TYPE ELECTRODE PLATE TRANSFER DEVICE FOR SECONDARY BATTERY}

The present invention (Disclosure) relates to a telescopic type electrode plate transfer device for secondary batteries that enables the electrode plates to be transferred at high speed.

Here, background information related to the present invention is provided, but this does not necessarily mean prior art.

Generally, chemical batteries are divided into primary batteries, which are used only for one-time discharge, and secondary batteries, which can be reused through repeated charging and discharging. Secondary batteries are being applied to various technical fields throughout the industry due to the repetitive charging and discharging described above.

As everyone knows, secondary batteries are manufactured by sequentially stacking a positive electrode plate, a separator, and a negative electrode plate and immersing them in an electrolyte solution. Methods for manufacturing the internal cell stack of secondary batteries are broadly classified into two types.

That is, in the case of small secondary batteries, the method of placing the negative and positive plates on a separator and winding them to form a jelly-roll is often used, and for medium to large secondary batteries with more electric capacity. In the case of , a method of manufacturing a negative electrode plate, a positive plate, and a separator by stacking in an appropriate order is widely used.

In addition, there are several methods of manufacturing the internal cell stack of secondary batteries by stacking, but among them, the Z-stacking method involves the separator being folded in a zigzag manner, and between the zigzag folded separators. Negative plates and positive plates are stacked in an alternating manner.

Meanwhile, a representative example of a device for manufacturing a battery cell stack using the Z-stacking method is 'Korean Patent Publication No. 10-2120403 (Cell Stack for Secondary Battery), patented and applied for by the present applicant. manufacturing device) and 'Korea Patent Publication No. 10-2320868 (cell stack manufacturing device for secondary batteries)'.

However, in the cell stack manufacturing device for secondary batteries disclosed in the above-mentioned 'Korean Patent Publication', the separator is folded in a zigzag shape by a stack table that rotates 45 degrees left and right, so the laminated negative electrode plates and There is a problem in which the positive electrode plate slips, and as a result, there is another problem in which the negative electrode plate and the positive plate cannot be stacked above a certain height.

Accordingly, recently, a Z-stacking method has been used in which the negative and positive plates are stacked by inserting them between separators that are folded in a zigzag shape on the stack table while the stack table is fixed.

However, in order to improve productivity by reducing the tact time in the Z-stacking method where the stack table is fixed, a P&P (Pick and P&P) method is used to pick up the negative or positive plate and place it on the stack table. Although high speed of place equipment is very important, conventional P&P (Pick and Place) equipment has limitations in high speed due to its structure.

Korean Patent Publication No. 10-2120799. Korean Patent Publication No. 10-2404676. Korean Patent Publication No. 10-0987261. Korean Patent Publication No. 10-1992467.

The purpose of the present invention (Disclosure) is to provide a telescopic type electrode transfer device for secondary batteries that allows the sliders to expand and contract in linear reciprocating motion in multiple stages by the operation of one driving unit and to transfer the electrode plates at high speed.

In addition, the problem to be solved by the present invention is not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. It could be.

Here, a general summary of the present invention is provided, and this should not be construed as limiting the scope of the present invention (This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).

In order to solve the above problem, according to one aspect among several aspects describing the present invention, the electrode plate installed between the alignment table and the stack table is picked up and aligned on the alignment table and placed on the stack table. A telescopic type electrode plate transfer device for secondary batteries, the telescopic type electrode plate transfer device for secondary batteries includes a driving unit that generates a driving force necessary for transferring the electrode plates; An expansion unit that receives driving force from the drive unit and expands and contracts in multiple stages; and a picker mounted on the elastic portion to pick up and seat the electrode plate.

In the telescopic type electrode plate transfer device for secondary batteries according to one aspect of the present invention, the driving part includes a base that is formed in a horizontal plate shape and extends horizontally from one side of the alignment table to one side of the stack table; and a ball screw that extends horizontally along the direction of displacement of the elastic portion and is rotatably supported on the upper surface of the base, wherein a guide hole is formed through the base to extend along the direction of displacement of the elastic portion, and one end of the ball screw The side may be connected to a servo motor fixed to one end of the upper surface of the base through a coupling.

In the telescopic type electrode transfer device for secondary batteries according to an aspect of the present invention, the elastic portion is formed in the shape of a horizontal plate and is mounted on the lower surface of the base so as to be slidable so as to be displaced along the longitudinal direction of the base. slider; a second slider formed in a horizontal plate shape and mounted on the lower surface of the first slider to be slidable so as to be displaced along the longitudinal direction of the base; It includes a power transmission means that causes the second slider to make a linear reciprocating motion in conjunction with the linear reciprocating motion of the first slider, and a ball screw nut that passes through the guide hole and is fastened to the ball screw is installed on the upper surface of the first slider. You can.

In the telescopic type electrode transfer device for secondary batteries according to an aspect of the present invention, a pair of first linear motion rails are installed on the lower surface of the base to extend horizontally along the displacement direction of the first slider, and the first slider A first motion block that is slidably fitted to the first linear motion rail is installed on the upper surface of the first slider, and a pair of second linear motion rails are installed on the lower surface of the first slider to extend horizontally along the displacement direction of the second slider. A second motion block that is slidably fitted to the second linear motion rail may be installed on the upper surface of the second slider.

In the telescopic type electrode plate transfer device for secondary batteries according to one aspect of the present invention, the power transmission means includes: a first pulley rotatably installed on one end of one side of the first slider; a second pulley rotatably installed on one end of the first slider; a first belt having one end fixed on the upper surface of the base and the other end fixed on the lower surface of the second slider via a first pulley; and a second belt, one end of which is fixed on the upper surface of the base, and the other end of which is fixed on the lower surface of the second slider via the second pulley, wherein the first belt moves toward the alignment table. The second slider may be moved toward the alignment table in conjunction with the slider, and the second belt may be interlocked with the first slider moving toward the stack table to cause the second slider to be moved toward the stack table.

In the telescopic type electrode transfer device for secondary batteries according to an aspect of the present invention, the picker includes an adsorption plate on the lower surface of which suction holes are formed corresponding to the size of the electrode plates; and a connection arm that connects the suction plate to the second slider and guides the suction plate to the upper side of the alignment table and the upper side of the stack table, wherein the connection arm is positioned relative to the displacement direction of the first slider and the second slider. It is provided in the shape of a normal bar extending horizontally in a vertically intersecting direction, and one end of the connection arm is fixedly installed on the lower surface of the second slider, and an adsorption plate may be installed on the lower side of the other end of the connection arm.

In the telescopic type electrode transfer device for secondary batteries according to an aspect of the present invention, when the adsorption plate picks up the electrode plate, the alignment table rises so that the electrode plate contacts the lower surface of the adsorption plate, and when the electrode plate picked up by the adsorption plate is placed, The stack table can rise.

According to the present invention, the sliders expand and contract to enable linear reciprocating motion in multiple stages between the pole plate pickup position and the pole plate seating position by the operation of one driving unit, thereby providing the effect of allowing the pole plate to be transported at high speed.

According to the present invention, since the sliders are expanded and contracted in multi-stage linear reciprocating motion by a servomotor and a ball screw, not only precise position control is possible, but also durability can be secured.

1 is a diagram schematically showing the installation state of a telescopic type electrode transfer device for secondary batteries according to the present invention.
Figure 2 is a perspective view schematically showing a telescopic type electrode plate transfer device for secondary batteries according to the present invention, a bottom perspective view seen from "A" in Figure 1.
3 and 4 are diagrams schematically showing the operating state of the telescopic type electrode plate transfer device for secondary batteries according to the present invention.

Hereinafter, an embodiment implementing the telescopic type electrode plate transfer device for secondary batteries according to the present invention will be described in detail with reference to the drawings.

However, the essential technical idea of the present invention cannot be said to be limited to the embodiments described below, and based on the essential technical idea of the present invention, it cannot be said that the possible embodiments are limited by the embodiments described below. It is disclosed that the embodiment described in covers the scope that can be easily proposed by way of replacement or change.

In addition, the terms used below are selected for convenience of explanation, so in understanding the essential technical idea of the present invention, they are not limited to dictionary meanings and are appropriately interpreted as meanings that correspond to the technical idea of the present invention. It should be.

Among the attached drawings, Figure 1 is a diagram schematically showing the installation state of the telescopic type electrode transfer device for secondary batteries according to the present invention.

Referring to Figure 1, the telescopic type electrode transfer device 100 for secondary batteries according to the present invention is installed between the alignment table 10 and the stack table 20 and includes an electrode plate (E) aligned on the alignment table 10; The negative electrode plate or positive plate) can be picked up and placed on the stack table 20.

For example, the electrode plate E is formed by notching the top line side and bottom line side of the unrolled electrode film (not shown) into the desired shape, and then cutting the electrode film in the width direction. The formed electrode plate (E) can be supplied to the alignment table 10 along a typical conveyor (not shown) and aligned.

Here, notching, cutting, and supplying the electrode film through a conveyor can be performed as a series of processes.

Meanwhile, the alignment table 10 and the stack table 20 can be moved up and down toward the telescopic type electrode transfer device 100 for secondary batteries according to the present invention.

For example, when picking up the electrode plate (E) aligned on the alignment table 10, the alignment table 10 rises toward the telescopic type electrode transfer device 100 for secondary batteries according to the present invention and moves the electrode plate E to the telescopic type secondary battery according to the present invention. The electrode plate transfer device 100 can pick up the electrode plate (E), and when the telescopic type electrode plate transfer device 100 for secondary batteries according to the present invention picks up the electrode plate (E), it can descend.

In addition, when the electrode plate (E) is placed on the stack table 20, the stack table 20 rises toward the telescopic type electrode plate transfer device 100 for secondary batteries according to the present invention, and moves toward the telescopic type electrode plate transfer device 100 for secondary batteries according to the present invention. ) allows the electrode plate (E) to be seated on the separator (S) supplied to the stack table 20, and the telescopic type electrode transfer device 100 for secondary batteries according to the present invention transfers the electrode plate (E) to the separator (S). If you land on it, you can descend.

The attached Figures 2 to 4 are diagrams schematically showing a telescopic type electrode plate transfer device for secondary batteries according to the present invention.

Referring to FIGS. 2 to 4, the telescopic type electrode plate transfer device 100 for secondary batteries according to the present invention includes a driving unit 110 that generates the driving force necessary for transporting the electrode plate (E), and receiving driving force from the driving unit 110. It includes an expansion unit 120 that expands and contracts in multiple stages, and a picker 150 mounted on the expansion unit 120 to pick up and place the electrode plate (E).

First, the driving unit 110 includes a typical ball screw 116 and a base 112 that supports the ball screw 116.

The base 112 is formed in a substantially horizontal plate shape and extends horizontally from one side of the alignment table 10 to one side of the stack table 20.

At this time, a guide hole 114 is formed to penetrate the base 112 to extend along the displacement direction of the elastic portion 120, that is, the longitudinal direction of the base.

Here, installing the base 112 between the alignment table 10 and the stack table 20 so as not to interfere with the alignment table 10 and the stack table 20 is a known technique, so a detailed description thereof is omitted. do.

The ball screw 116 extends horizontally along the displacement direction of the elastic portion 120 and is rotatably supported on the upper surface of the base 112.

And one end of the ball screw 116 is connected to the servomotor 118 through a normal coupling, and for this purpose, the servomotor 118 is fixedly installed on one end of the upper surface of the base 112.

Here, since it is a known technique to rotatably support the ball screw 116 on the upper surface of the base 112, a detailed description thereof will be omitted.

The stretchable portion 120 includes a first slider 122, a second slider 130, and a power transmission means 136.

The first slider 122 is formed in a substantially horizontal plate shape, and the base 112 is mounted on the lower surface so as to be slidable so as to be displaced along the longitudinal direction of the base 112.

To this end, a pair of first linear motion rails 124 are installed on the lower surface of the base 112 to extend horizontally along the direction of displacement of the first slider 122 so as not to interfere with the guide hole 114. 1 A first motion block 126 that is slidably fitted to the first linear motion rail 124 is installed on the upper surface of the slider 122.

Also, a normal ball screw nut 128 is installed on the upper surface of the first slider 122, which extends through the guide hole 114 to the outside of the upper surface of the base 112 and is fastened to the ball screw 116.

That is, the first slider 122 is moved along the longitudinal direction of the base 112 by the ball screw 116 and the ball screw nut 128 that convert the rotational torque of the servomotor 118 into linear reciprocating motion. It becomes possible to drive in a straight reciprocating motion.

The second slider 130, like the first slider 122, is formed in a substantially horizontal plate shape and is mounted on the lower surface of the first slider 122 to be slidable so as to be displaced along the longitudinal direction of the base 112. do.

To this end, a pair of second linear motion rails 132 are installed on the lower surface of the first slider 122 to extend horizontally along the direction of displacement of the second slider 130, and the upper part of the second slider 130 A second motion block 134 that is slidably fitted to the second linear motion rail 132 is installed on the surface.

Meanwhile, the power transmission means 136 causes the second slider 130 to perform a linear reciprocating motion in conjunction with the linear reciprocating motion of the first slider 122.

The power transmission means 136 includes a first pulley 138 and a second pulley 140, and a first belt 142 and a second belt 144.

The first pulley 138 and the second pulley 140 are installed on the first slider 122 to face each other along the displacement direction of the second slider 130.

At this time, the first pulley 138 is freely rotatably installed on one end of one side of the first slider 122, and the second pulley 140 is freely rotatable on the other end of one side of the first slider 122. It is installed properly.

The first belt 142 moves the second slider 130 toward the alignment table 10 in conjunction with the first slider 122 moving toward the alignment table 10, and the second belt 144 moves toward the alignment table 10. The second slider 130 is moved toward the stack table 20 in conjunction with the first slider 122 moving toward the stack table 20 .

To this end, one end of the first belt 142 is fixed on the upper surface of the base 112, and the other end of the first belt 142 is moved to the lower part of the second slider 130 via the first pulley 138. It is fixed on the surface. Likewise, one end of the second belt 144 is fixed on the upper surface of the base 112 so as not to interfere with the one end of the first belt 142, and the other end of the second belt 144 is fixed to the second pulley 140. It is fixed on the lower surface of the second slider 130 so as not to interfere with the other end of the first belt 142.

That is, when the first slider 122 is displaced (moved) from the stack table 20 side to the alignment table 10 side by the operation of the drive unit 110, the second pulley 140 and the second belt The length (distance) between the one end side of (144) is shortened and the length (distance) between the other end side of the second pulley 140 and the second belt 144 is lengthened, so that the first pulley 138 and the first belt The length between one end side of 142 becomes longer and the length between the first pulley 138 and the other end side of first belt 142 becomes shorter, whereby the second slider 130 is connected to the first slider 122. It moves toward the alignment table 110 in conjunction with (see FIG. 3).

Conversely, when the first slider 122 is displaced (moved) from the alignment table 10 side to the stack table 20 side by the operation of the drive unit 110, the first pulley 138 and the first belt The length (distance) between one end of the first pulley 138 and the other end of the first belt 142 becomes longer and the second pulley 140 and the second belt become shorter. The length between one end of the second pulley 140 and the other end of the second belt 144 becomes shorter, whereby the second slider 130 is connected to the first slider 122. It moves toward the stack table 110 in conjunction with (see FIG. 4).

Here, the present invention does not specifically limit the method of fixing one end and the other end of the first belt 142 and the second belt 144 to the base 112 and the second slider 130.

The picker 150 includes an adsorption plate 154 and a connection arm 152 connecting the adsorption plate 154 to the second slider 130.

The connection arm 152 is provided in the shape of a regular bar extending horizontally in a direction perpendicular to the displacement direction of the first slider 122 and the second slider 130.

At this time, one end of the connection arm 152 is fixedly installed on the lower surface of the second slider 130, and an adsorption plate 154 is installed on the lower side of the other end of the connection arm 152.

This connection arm 152 guides the suction plate 154 to the pole plate pickup position, that is, the upper side of the alignment table 10, and the pole plate seating position, that is, the upper side of the stack table.

The suction plate 154 is provided in the shape of a horizontal plate with a predetermined width and length, and suction holes are formed on the lower surface (adsorption surface) of the suction plate 154 corresponding to the size of the electrode plate (E). .

As anyone can see, the adsorption plate 154 formed in this way is connected to a vacuum line (not shown) extending from a typical vacuum facility (not shown).

That is, when the suction plate 154 is guided to the electrode plate pickup position by the operation of the driving unit 110 and the expansion unit 120, the alignment table 10, on which the alignment of the electrode plate E is completed, is placed on the surface of the electrode plate E. It rises to contact the lower surface of the suction plate 154, and at the same time, vacuum pressure is applied to the suction plate 154 to adsorb the electrode plate E. When the suction plate 154 adsorbs the electrode plate E, it freezes. The table 10 is lowered (see Figure 3).

In addition, when the suction plate 154 is guided to the electrode plate seating position by the operation of the driving unit 110 and the expansion unit 120, the stack table 20 rises, and at the same time, the vacuum pressure disappears from the suction plate 154. As the electrode plate (E) is placed on the separator (S) stacked on the stack table 20, the stack table (20) is lowered when the electrode plate (E) is placed on the separator (S) (see Fig. 4).

In the telescopic type electrode transfer device 100 for secondary batteries according to the present invention formed in this way, the sliders 122 and 130 of the expandable part 120 move between the electrode plate pickup position and the electrode plate seating position by the operation of one driving part 110. Because it expands and contracts in multiple stages to enable linear reciprocating motion, it allows the pole plate (E) to be transported at high speed.

In addition, the telescopic type electrode transfer device 100 for secondary batteries according to the present invention expands and contracts the sliders 122 and 130 in multiple stages to enable linear reciprocating movement by the servomotor 118 and the ball screw 116, thereby enabling precise position control. Not only is this possible, but it also ensures durability.

Claims (7)

A telescopic type electrode transfer device for secondary batteries that is installed between an alignment table and a stack table and picks up the electrode plates aligned on the alignment table and places them on the stack table,
The telescopic type electrode transfer device for secondary batteries,
a driving unit that generates a driving force necessary for transporting the electrode plate;
An expansion unit that receives driving force from the drive unit and expands and contracts in multiple stages; and
It includes a picker mounted on the stretchable portion to pick up and seat the electrode plate,
The driving unit,
a base formed in a horizontal plate shape and extending horizontally from one side of the alignment table to one side of the stack table; and
It includes a ball screw that extends horizontally along the direction of displacement of the elastic portion and is rotatably supported on the upper surface of the base,
A guide hole is formed through the base to extend along the direction of displacement of the expansion and contraction portion,
One end of the ball screw is connected to a servomotor fixed to one end of the upper surface of the base through a coupling,
The expansion and contraction section,
a first slider formed in a horizontal plate shape and mounted on the lower surface of the base to be slidable so as to be displaced along the longitudinal direction of the base;
a second slider formed in a horizontal plate shape and mounted on a lower surface of the first slider to be slidable so as to be displaced along the longitudinal direction of the base;
It includes a power transmission means that causes the second slider to make a linear reciprocating motion in conjunction with the linear reciprocating motion of the first slider,
A ball screw nut is installed on the upper surface of the first slider and is fastened to the ball screw through the guide hole,
The power transmission means is,
a first pulley rotatably installed at one end of one side of the first slider;
a second pulley rotatably installed on one end of the first slider;
a first belt having one end fixed on the upper surface of the base and the other end fixed on the lower surface of the second slider via the first pulley; and
A second belt, one end of which is fixed on the upper surface of the base, and the other end of which is fixed on the lower surface of the second slider via the second pulley,
The first belt moves the second slider toward the alignment table in conjunction with the first slider moving toward the alignment table,
The second belt is a telescopic type electrode transfer device for secondary batteries in which the second belt moves in conjunction with the first slider moving toward the stack table to move the second slider toward the stack table.
delete delete In claim 1,
A pair of first linear motion rails are installed on the lower surface of the base to extend horizontally along the displacement direction of the first slider, and are slidably fitted to the first linear motion rail on the upper surface of the first slider. The first motion block is installed,
A pair of second linear motion rails are installed on the lower surface of the first slider to extend horizontally along the displacement direction of the second slider, and are slidably fitted to the second linear motion rail on the upper surface of the second slider. A telescopic type plate transfer device for secondary batteries in which a second motion block is installed.
delete In claim 1,
The picker is,
An adsorption plate on the lower surface of which suction holes are formed corresponding to the size of the electrode plate; and
It includes a connection arm that connects the suction plate to the second slider and guides the suction plate to the upper side of the alignment table and the upper side of the stack table,
The connection arm is provided in a normal bar shape extending horizontally in a direction perpendicular to the displacement direction of the first slider and the second slider,
One end of the connection arm is fixedly installed on the lower surface of the second slider,
A telescopic type electrode transfer device for secondary batteries in which the adsorption plate is installed at the lower part of the other end of the connection arm.
In claim 6,
When the suction plate picks up the pole plate, the alignment table rises so that the pole plate contacts the lower surface of the suction plate,
A telescopic type electrode transfer device for secondary batteries in which the stack table rises when the electrode plate picked up by the adsorption plate is placed.