WO2024150839A1

WO2024150839A1 - Battery cell suction apparatus and method

Info

Publication number: WO2024150839A1
Application number: PCT/KR2023/000345
Authority: WO
Inventors: 노경래
Original assignee: 엘지전자 주식회사
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2024-07-18

Abstract

This battery cell suction apparatus comprises: a pair of first guide bars which are arranged in a first direction to face each other and of which facing surfaces include a flat first surface and a curved second surface; a moving-up/down table on which battery cells are stacked and which moves up/down between the pair of first guide bars; and a suction table which sucks an uppermost battery cell from among the stacked battery cells, wherein the suction table comprises an impact bar which applies the impact to the uppermost battery cell so as to isolate a battery cell attached to the lower portion of the uppermost battery cell. As the stacked battery cells are moved up/down, the battery cell is curved upward from the uppermost battery cell, and then, the impact bar applies impact so that the uppermost battery cell curved upward is bent downward to prevent two sheets from being taken out.

Description

Battery cell adsorption device and method

The present invention relates to a battery cell adsorption device and method that can adsorb one battery cell at a time in order from the topmost battery cell among the battery cells stacked in the process for manufacturing a secondary battery.

In general, a secondary battery refers to a battery that converts external electrical energy into chemical energy, stores it, and generates electricity when needed. Commonly used secondary batteries include lead acid batteries and nickel-cadmium batteries (Ni-Cd). , nickel hydride batteries (NiMH), lithium ion batteries (Li-ion), and lithium ion polymer batteries (Li-ion polymer).

A secondary battery consists of a positive and negative electrode plate coated with an active material on a current collector, a separator that separates the positive and negative plates, an electrolyte that transfers ions through the separator, a case that accommodates the positive plate, separator, and negative electrode plate, and a positive plate and It includes a lead tab connected to the negative electrode plate and pulled out.

Depending on their shape, secondary batteries can be classified into pouch-type secondary batteries, in which battery cells containing an anode, a cathode, and a separator are built into a pouch of a predetermined shape, and prismatic secondary batteries, in which a plurality of battery cells are provided in a prismatic case. there is.

In order to manufacture a secondary battery, battery cells are transported to the secondary battery manufacturing process. In this case, among multiple stacked battery cells, one cell at a time is adsorbed in order, starting from the top battery cell, and then transported to the manufacturing process.

At this time, since the thin battery cells are coated and multiple sheets are stacked, when the battery cells are adsorbed due to the electrostatic force between the battery cells, local vacuum, or adhesive remaining at the edges, two or more sheets stick together and are ejected. It can be.

This phenomenon is called the so-called double sheet take-out or double sheet defect phenomenon, and when double sheet take-out occurs, a problem occurs that prevents the secondary battery manufacturing process from proceeding. And this leads to a decrease in yield and production volume of secondary batteries.

Therefore, in order to solve the above-mentioned problems in the secondary battery manufacturing process, a battery cell adsorption device is needed that can adsorb only one battery cell at the top of a stacked battery cell and prevent two cells from being taken out.

The present invention provides a battery cell adsorption device and method. More specifically, the stacked battery cells are lifted and bent upward from the uppermost battery cell, and the uppermost battery cell bent upward is bent downward. The purpose is to provide a battery cell adsorption device and method that can prevent double sheet extraction through a shock bar that applies impact.

In addition, the purpose is to provide a battery cell adsorption device and method that can prevent double sheet ejection by removing static electricity between battery cells attached to the bottom of the top battery cell through a brush that rubs against the side of the top battery cell. do.

The problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

a pair of first guide bars disposed opposite each other in a first direction and having opposing surfaces including a flat first surface and a curved second surface; an elevating table on which battery cells are stacked to ascend and descend between the pair of first guide bars; and an adsorption table that adsorbs the uppermost battery cell among the stacked battery cells, wherein the adsorption table applies an impact to the uppermost battery cell to separate the battery cell attached to the lower part of the uppermost battery cell. A battery cell adsorption device including a bar is provided.

The shock bar may apply an impact to the uppermost battery cell, which is raised and lowered between the second surfaces, to bend downward.

The shock bar may include an elastic member that applies elastic force to push out the portion in contact with the uppermost battery cell.

The suction table includes a suction pad that generates suction force to adsorb the uppermost battery cell, and the shock bar may protrude downward from the suction pad.

A plurality of shock bars may be positioned spaced apart from each other in the first direction, and a plurality of suction pads may be positioned spaced apart from each of the plurality of shock bars in a second direction perpendicular to the first direction.

A pair of second guide bars are disposed opposite to each other in a second direction perpendicular to the first direction and the opposing surfaces include a flat third surface, and the lifting table includes the pair of first guide bars and It is possible to go up and down between the pair of second guide bars.

The second guide bar further includes a curved fourth surface, and the impact bar is raised and lowered between the second surface and the fourth surface and shocks the uppermost battery cell, which is bent upward, to bend downward. can be applied.

The lifting table may have a size smaller than that of the battery cell and may be spaced apart from the first guide bar.

It is located at the top of the first guide bar and may further include a brush that rubs against the side of the uppermost battery cell.

Elevating the stacked battery cells through a lifting table that moves up and down between a pair of guide bars arranged opposite to each other; The stacked battery cells are raised and lowered between curved surfaces included in opposing surfaces of the pair of guide bars and bent upward from the topmost battery cell; separating the battery cells attached to the lower part of the uppermost battery cell by applying an impact to the uppermost battery cell through a shock bar of an adsorption table so that the uppermost battery cell is bent downward; and adsorbing the uppermost battery cell through an adsorption pad of the adsorption table.

The step of bending upward may enable at least a central portion between the uppermost battery cell and the battery cell attached to the lower part of the uppermost battery cell to be separated from each other.

In the step of separating the battery cells, elastic force may be applied to push the portion of the shock bar in contact with the uppermost battery cell that is bent upward.

In the step of separating the battery cells, static electricity between the topmost battery cell and the battery cell attached to the lower part of the topmost battery cell can be removed through a brush rubbing against the side of the topmost battery cell.

The battery cell adsorption device and method according to the present invention includes a shock bar that causes the stacked battery cells to bend upward from the topmost battery cell as they move up and down, and applies an impact to the topmost battery cell bent upwards to bend downward. This prevents double sheet extraction.

In addition, the brush rubbing against the side of the top battery cell removes static electricity between the battery cells attached to the bottom of the top battery cell, thereby preventing double sheets from being taken out.

Further scope of applicability of the present invention will become apparent from the detailed description that follows. However, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art, the detailed description and specific embodiments such as preferred embodiments of the present invention should be understood as being given only as examples.

Figure 1 is a side view of the topmost battery cell among stacked battery cells in a battery cell adsorption device according to an embodiment of the present invention.

Figure 2 is a view from the top of the battery cell adsorption device according to an embodiment of the present invention.

Figure 3 is a diagram for explaining how the uppermost battery cell is bent upward in the battery cell adsorption device according to an embodiment of the present invention.

Figure 4 is a diagram for explaining how the uppermost battery cell is bent downward through the shock bar of the battery cell adsorption device according to an embodiment of the present invention.

Figure 5 is a diagram showing another shape in which the uppermost battery cell is bent upward in the battery cell adsorption device according to an embodiment of the present invention.

Figure 6 is a view from the top of another embodiment of the battery cell adsorption device of the present invention.

FIG. 7 is a diagram illustrating a shape in which the uppermost battery cell according to the embodiment of FIG. 6 is bent upward.

Figure 8 is a diagram showing a case where the lifting table is smaller than the size of the battery cell in the battery cell adsorption device according to an embodiment of the present invention.

Figure 9 is a view of the brush of the battery cell adsorption device according to an embodiment of the present invention viewed from the top.

Figure 10 is a diagram for explaining a method of removing static electricity between battery cells through a brush in a battery cell adsorption device according to an embodiment of the present invention.

Figure 11 is a diagram for explaining a battery cell adsorption method according to an embodiment of the present invention.

Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted. The suffixes “module” and “part” for components used in the following description are given or used interchangeably only for the ease of preparing the specification, and do not have distinct meanings or roles in themselves. Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted. In addition, the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings, and all changes included in the spirit and technical scope of the present invention are not limited. , should be understood to include equivalents or substitutes.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Figure 1 is a side view showing the shape in which the uppermost battery cell 10a among the stacked battery cells 10 is adsorbed by the battery cell adsorption device 100 according to an embodiment of the present invention. Figure 2 is a view of the battery cell adsorption device 100 according to an embodiment of the present invention as seen from the top.

The battery cell adsorption device 100 according to an embodiment of the present invention may include a pair of first guide bars 110, an elevating table 120, and an adsorption table 130.

Here, the pair of first guide bars 110 may be arranged to face each other in the first direction (x-axis direction). And the opposing surfaces of the pair of first guide bars 110 may include a flat first surface 111 and a curved second surface 113.

Battery cells 10 may be stacked on the lifting table 120. And the lifting table 120 can be raised and lowered in the z-axis direction between the pair of first guide bars 110 through the lift 121.

Here, the lift 121 can be applied to any device that can raise and lower the elevating table 120. For example, the lift 121 may be a hydraulic cylinder that moves the lifting table 120, and in this case, the lifting table 120 can be raised and lowered through the supply or withdrawal of hydraulic pressure. Additionally, the lift 121 may be a device that can raise and lower the elevating table 120 by driving a motor.

And the lifting table 120 may have a similar shape and size as the battery cell 10. For example, the lifting table 120 may have a square plate shape similar to the shape and size of the battery cell 10. Through this, the lifting table 120 can raise and lower the entire stacked battery cells 10 uniformly while moving up and down between the pair of first guide bars 110.

The adsorption table 130 can adsorb the uppermost battery cell 10a among the stacked battery cells 10. Figure 1 is a side view of the shape in which the uppermost battery cell 10a among the stacked battery cells 10 is adsorbed in the battery cell adsorption device 100 according to an embodiment of the present invention, showing the adsorption table 130. The uppermost battery cell (10a) can be adsorbed through the suction pad (150).

Here, the suction pad 150 may be provided with a vacuum suction force to adsorb the uppermost battery cell 10a. Additionally, the vacuum adsorption power provided to the suction pad 150 may take into account the mass of the battery cell 10 and the area of the suction pad 150. This is because the greater the vacuum suction power provided to the suction pad 150, the greater the possibility that two sheets will be taken out.

In other words, in order to adsorb only one battery cell (10a) at the top of the stacked battery cells (10) and prevent two cells from being taken out, it is necessary to provide a minimum vacuum adsorption force to the suction pad (150). Therefore, the battery cell adsorption device 100 according to an embodiment of the present invention applies a minimum vacuum to the adsorption pad 150 in consideration of the mass of one battery cell 10, the gravitational acceleration, and the area of the adsorption pad 150. It can be provided to provide adsorption power.

Additionally, the suction pad 150 may move up and down in the z-axis direction to adsorb the uppermost battery cell 10a. And the suction pad 150 can be moved so that the adsorbed uppermost battery cell 10a can be transferred to a process for manufacturing a secondary battery.

Referring to FIGS. 1 and 2 together, in the battery cell adsorption device 100 according to an embodiment of the present invention, a pair of first guide bars 110 move in a second direction perpendicular to the first direction (x-axis direction). A plurality of pieces may be arranged spaced apart in the (y-axis direction).

And the battery cell adsorption device 100 according to an embodiment of the present invention may include a pair of second guide bars 160 disposed to face each other in the second direction (y-axis direction). The opposing surfaces of the pair of second guide bars 160 may include a flat third surface 161. In addition, a plurality of pairs of second guide bars 160 may be arranged to be spaced apart from each other in the first direction (x-axis direction).

In this case, the lifting table 120 can go up and down between the pair of first guide bars 110 and the pair of second guide bars 160. That is, the stacked battery cells 10 can be raised and lowered between the pair of first guide bars 110 and the pair of second guide bars 160 by the lifting table 120.

And the pair of first guide bars 110 and the pair of second guide bars 160 prevent the lateral flow of the stacked battery cells 10 during the process of raising and lowering the stacked battery cells 10. It can serve as a guide. That is, the stacked battery cells 10 include a first surface 111 and a second surface 113 included in opposing surfaces of the pair of first guide bars 110, and the pair of second guide bars 110. It can be raised and lowered by the lifting table 120 between the third surfaces 161 included in the opposing surfaces of 160.

Referring to FIG. 2, in the battery cell adsorption device 100 according to an embodiment of the present invention, the adsorption table 130 may include a shock bar 140 and an adsorption pad 150. Here, a plurality of shock bars 140 may be located spaced apart along the first direction (x-axis direction). In addition, a plurality of suction pads 150 may be located in the second direction (y-axis direction) and spaced apart from each of the plurality of shock bars 140.

However, the number or arrangement of the shock bar 140 and the suction pad 150 is not limited to that shown in FIG. 2. For example, the shock bar 140 may be located in the center of the suction table 130, and the suction pad 150 may be positioned spaced apart from the shock bar 140 in the first direction (x-axis direction).

Figure 3 is a diagram for explaining how the uppermost battery cell 10a is bent upward in the battery cell adsorption device 100 according to an embodiment of the present invention. FIG. 4 is a diagram illustrating how the uppermost battery cell 10a is bent downward through the shock bar 140 of the battery cell adsorption device 100 according to an embodiment of the present invention. Figure 5 is a diagram showing another shape in which the uppermost battery cell 10a is bent upward in the battery cell adsorption device 100 according to an embodiment of the present invention.

First, in explaining the embodiment of the present invention below, it is assumed that the uppermost battery cell (10a) and the two battery cells (10b) attached to the lower part of the uppermost battery cell are taken out in a state where they are attached to each other. It is not limited. In other words, it is clear that the embodiment of the present invention can be applied even when three or more battery cells 10 are attached to each other.

Referring to Figure 2 together, Figure 3 (a) shows the stacked battery cells 10 between the first surfaces 111 of a pair of first guide bars 110 and a pair of second guide bars 160. ) This is a diagram showing a shape that is being lifted up and down through the lifting table 120 between the third surfaces 161 of ). And in Figure 3 (b), the stacked battery cells 10 are bent upward from the uppermost battery cell 10a as they rise and fall between the second surfaces 113 of the pair of first guide bars 110, and reach the uppermost end. This is a diagram showing a shape in which the battery cell 10a and the battery cell 10b attached to the lower part of the uppermost battery cell are bent upward.

The present invention is to prevent two sheets from being taken out during the adsorption process of the battery cell 10, through the curved second surface 113 included in the opposing surface of the pair of first guide bars 110 (b) of FIG. 3. ), the battery cell 10 can be bent upward.

This is because the distance between opposing surfaces of the pair of first guide bars 110 gradually decreases toward the top due to the curved second surface 113. That is, the side of the uppermost battery cell 10a, which is raised and lowered between the second surfaces 113, is in contact with the second surface 113 and can be bent upward based on the magnetic elastic force of the battery cell 10 itself. . And as the lifting table 120 rises, the battery cell 10b attached to the lower part of the uppermost battery cell may also be bent upward.

At this time, as described above, since the distance between the opposing surfaces of the first guide bar 110 due to the second surface 113 gradually decreases as it moves upward, the battery cell attached to the lower part of the uppermost battery cell The uppermost battery cell (10a) is bent more upward than (10b).

Therefore, as shown in FIG. 3, the battery cell adsorption device 100 according to an embodiment of the present invention has a curved second surface 113 included in the opposing surface of the pair of first guide bars 110. Through this, the uppermost battery cell (10a) can be first bent upward so that it can be separated from the battery cell (10b) attached to the lower part of the uppermost battery cell.

However, as described above, since the thin battery cells 10 are coated and multiple sheets are stacked, the battery cells 10 in FIG. 3 may be damaged due to mutual electrostatic force, local vacuum, or adhesive remaining at the edges. There may be cases where it is not possible to prevent double sheet extraction using the above-described method alone.

Therefore, the battery cell adsorption device 100 according to an embodiment of the present invention includes a shock bar 140 that applies an impact to the uppermost battery cell 10a to bend it downward to prevent two sheets from being taken out. may include.

4 shows that, as described above, an impact is applied to the uppermost battery cell 10a to bend it downward through the impact bar 140, thereby splitting the uppermost battery cell 10a and the battery cell attached to the lower part of the uppermost battery cell ( This is a diagram showing the shape of separating 10b).

Through this, the uppermost battery cell (10a) is primarily bent upward so that at least the central portion between the battery cells (10b) attached to the lower part of the uppermost battery cell can be separated from each other, and secondarily, the uppermost battery cell (10a) is bent upward. An impact can be applied through the shock bar 140 to bend the battery cell 10a downward so that the uppermost battery cell 10a is clearly separated.

Here, in the battery cell adsorption device 100 according to an embodiment of the present invention, the shock bar 140 may include an elastic member 141 that applies elastic force to push out the portion in contact with the uppermost battery cell 10a. . And the shock bar 140 may protrude downward from the suction pad 150.

Through this, the shock bar 140 can apply an elastic force to push the portion in contact with the uppermost battery cell 10a, which is bent upward, so that the uppermost battery cell 10a is bent downward.

In addition, the shock bar 140 is screw-type fastened to the suction table 130, so that the height of the shock bar 140 protruding downward can be adjusted. As described above with reference to FIG. 2, in the battery cell adsorption device 100 according to an embodiment of the present invention, a plurality of shock bars 140 and suction pads 150 may be located on the suction table 130, The suction pad 150 may be provided with vacuum suction power. Here, there may be a case where there is a difference in the vacuum adsorption power provided to the plurality of suction pads 150. In this case, the possibility of two sheets being taken out from the suction pad 150, which provides a large vacuum adsorption power, may increase. .

Therefore, in the battery cell adsorption device 100 according to an embodiment of the present invention, the shock bar 140 is screw-type fastened to the adsorption table 130, so that the height at which the shock bar 140 protrudes downward can be adjusted. Therefore, it is possible to cope with the extraction of two sheets that may occur due to differences in vacuum suction power provided to the plurality of suction pads 150.

Figure 5 is a diagram showing another shape in which the uppermost battery cell 10a is bent upward in the battery cell adsorption device 100 according to an embodiment of the present invention. As shown in FIG. 5, the uppermost battery cell 10a is raised and lowered between the second surfaces 113 through the curved second surfaces 113 included in the opposing surfaces of the pair of first guide bars 110. It can be wrinkled from the top and bent toward the top.

This is because partial separation may occur between the uppermost battery cell 10a, which rises and lowers between the second surfaces 113, and the battery cell 10b attached to the lower part of the uppermost battery cell. And the more parts are separated, the easier it is to remove electrostatic force or local vacuum between the battery cells 10.

Therefore, the battery cell adsorption device 100 according to an embodiment of the present invention is lifted and lowered between the second surfaces 113 through the second surfaces 113 included in the opposing surfaces of the pair of first guide bars 110. The battery cell 10b attached to the lower part of the uppermost battery cell can be separated by starting from the uppermost battery cell 10a and bending it toward the top. In addition, as described above with reference to FIG. 4, an impact can be applied to the uppermost battery cell 10a through the shock bar 140 of the suction table 130, thereby impacting the battery cell attached to the lower portion of the uppermost battery cell. By separating (10b), ejection of two sheets can be reliably prevented.

Figure 6 is a view from the top of another embodiment of the battery cell adsorption device 100 of the present invention. FIG. 7 is a diagram illustrating a shape in which the uppermost battery cell 10a according to the embodiment of FIG. 6 is bent upward. FIG. 8 is a diagram illustrating a case where the lifting table 120 is smaller than the size of the battery cell 10 in the battery cell adsorption device 100 according to an embodiment of the present invention.

First, referring to FIG. 6, the battery cell adsorption device 100 of the present invention includes a pair of first guide bars 110 arranged opposite to each other in the first direction (x-axis direction) and a pair of first guide bars 110 arranged opposite to each other in the first direction (x-axis direction). ) may include a pair of second guide bars 160 disposed to face each other in a second direction (y-axis direction) perpendicular to the y-axis direction. In addition, a plurality of the pair of first guide bars 110 may be arranged spaced apart from each other in the second direction (y-axis direction), and the pair of second guide bars 160 may be arranged in the first direction (x-axis direction). A plurality of them may be arranged and spaced apart from each other.

As described above with reference to FIGS. 1 and 2 , opposing surfaces of the pair of first guide bars 110 may include a flat first surface 111 and a curved second surface 113. Through this, the stacked battery cells 10 can be raised and lowered between the first guide bars 110 and the uppermost battery cell 10a, which is raised and lowered between the second surfaces 113, can be bent upward. In addition, the opposing surface of the pair of second guide bars 160 may include a flat third surface 161, and the stacked battery cells 10 may be raised and lowered in the process of raising and lowering the stacked battery cells 10. It can act as a guide to prevent lateral flow.

Referring again to FIG. 6, the battery cell adsorption device 100 of the present invention may further include a curved fourth surface 163 on the opposing surface of the pair of second guide bars 160. In this case, the distance between the opposing surfaces of the pair of first guide bars 110 and the distance between the opposing surfaces of the pair of second guide bars 160 by the curved second surface 113 and the curved fourth surface 163 The distance between opposing surfaces gradually becomes smaller toward the top.

Accordingly, the side of the uppermost battery cell 10a, which rises and falls between the second surface 113 and the fourth surface 163, is in contact with the second surface 113 and the fourth surface 163, as shown in FIG. As shown, the uppermost battery cell 10a may be bent upward. That is, all four sides of the uppermost battery cell 10a, which is raised and lowered, are in contact with the second surface 113 and the fourth surface 163, and the battery cell 10 can be bent upward based on its own magnetic elastic force. and can be separated from the battery cell 10b attached to the lower part of the uppermost battery cell.

FIG. 8 is a diagram illustrating a case where the lifting table 120 is smaller than the size of the battery cell 10 in the battery cell adsorption device 100 according to an embodiment of the present invention. In the battery cell adsorption device 100 according to an embodiment of the present invention, the lifting table 120 has a size smaller than the size of the battery cell 10 and may be spaced apart from the first guide bar 110. This is to cause the side portions of the battery cells 10 stacked on the lifting table 120 to sag due to gravity. Additionally, as the elevating table 120 is repeatedly raised and lowered, the side portions of the stacked battery cells 10 are further sagging due to gravity and inertia.

That is, the size of the lifting table 120 is made smaller than the size of the battery cells 10 so that the side parts of the stacked battery cells 10 are sagging due to gravity and inertial force so that the battery cells 10 are separated from the side parts in advance. You can. And through this, it is possible to more reliably prevent two sheets from being taken out during the adsorption process of the battery cell 10.

Figure 9 is a view of the brush 170 of the battery cell adsorption device 100 according to an embodiment of the present invention as seen from the top. FIG. 10 is a diagram illustrating a method of removing static electricity between battery cells 10 through a brush 170 in the battery cell adsorption device 100 according to an embodiment of the present invention.

In the battery cell adsorption device 100 according to an embodiment of the present invention, the brush 170 serves to remove static electricity between the uppermost battery cell 10a and the battery cell 10b attached to the lower part of the uppermost battery cell. can do.

First, referring to FIG. 3 , the brush 170 may be located at the top of the first guide bar 110. Additionally, the brush 170 may be located at the top of the first guide bar 110 and the top of the second guide bar 160. And the brush 170 may be coupled to the brush body 171, and the brush body 171 is coupled to the top of the first guide bar 110 and the top of the second guide bar 160 so that the brush 170 It can be located at the top of the first guide bar 110 and the top of the second guide bar 160. Accordingly, the brush 170 is located between the first guide bar 110 and the second guide bar 160 and the suction table 130 and may rub against the side of the uppermost battery cell 10a.

In Figure 10 (a), the top battery cell 10a and the battery cell 10b attached to the lower part of the top battery cell are bent upward, and the side of the top battery cell 10a is brushed 170. This is a drawing showing before friction. In Figure 10 (b), the top battery cell 10a is bent downward through the shock bar 140, and the side of the top battery cell 10a rubs against the brush 170, causing the top battery cell to be damaged. This is a diagram showing a shape separated from the battery cell 10b attached to the bottom.

Accordingly, the brush 170 may rub against the side of the uppermost battery cell 10a as the uppermost battery cell 10a bends downward through the shock bar 140, thereby causing the uppermost battery cell 10a to be bent downward. Static electricity between the battery cell 10a and the battery cell 10b attached to the bottom of the uppermost battery cell can be removed. And through this, the battery cell 10a at the top and the battery cell 10b attached to the bottom of the top battery cell can be clearly separated to prevent two sheets from being taken out during the adsorption process of the battery cell 10.

Referring to FIGS. 1 and 2 together, first, the stacked battery cells 10 can be lifted up and down through a lifting table 120 that goes up and down between a pair of guide bars arranged opposite to each other (S110).

Here, the pair of guide bars may include a pair of first guide bars 110 arranged to face each other in the first direction (x-axis direction). Additionally, a plurality of the pair of first guide bars 110 may be arranged to be spaced apart in a second direction (y-axis direction) perpendicular to the first direction (x-axis direction). In addition, it may further include a pair of second guide bars 160 disposed to face each other in the second direction (y-axis direction). In addition, a plurality of pairs of second guide bars 160 may be arranged to be spaced apart from each other in the first direction (x-axis direction).

Thereafter, the stacked battery cells 10 may be raised and lowered between curved surfaces included in opposing surfaces of a pair of guide bars and bent upward from the uppermost battery cell 10a (S120).

Here, the curved surface included in the opposing surface of the pair of guide bars may include the second surface 113, which is a curved surface included in the opposing surface of the pair of first guide bars 110 described above. Also, referring to FIG. 6 , it may include a fourth surface 163, which is a curved surface included in the opposing surface of the pair of second guide bars 160.

And, as described above with reference to FIGS. 3, 5, and 7, the uppermost battery cell (10a) bends upward from the uppermost battery cell (10a) and the battery cell (10b) attached to the lower part of the uppermost battery cell. It may include allowing at least the central portion of the liver to be separated from each other.

Afterwards, an impact is applied through the impact bar 140 of the suction table 130 so that the uppermost battery cell 10a, which is bent upward, is bent downward, thereby breaking the battery cell 10b attached to the lower part of the uppermost battery cell. can be separated (S130).

Here, the uppermost battery cell (10a) and the battery cell (10b) attached to the lower part of the uppermost battery cell are separated by pushing the portion in contact with the uppermost battery cell (10a) where the impact bar 140 is bent upward. It may include applying an elastic force to release the elastic force.

In addition, separating the uppermost battery cell (10a) and the battery cell (10b) attached to the lower part of the uppermost battery cell is caused by friction with the side of the uppermost battery cell (10a), as described above in FIGS. 9 and 10. This may include removing static electricity between the topmost battery cell 10a and the battery cell 10b attached to the lower part of the topmost battery cell through the brush 170. And through this, the topmost battery cell (10a) and the battery cell (10b) attached to the lower part of the topmost battery cell can be clearly separated.

Then, the uppermost battery cell (10a) is adsorbed through the suction pad (150) of the adsorption table (130) (S140), and the uppermost battery cell (10a) among the stacked battery cells (10) is adsorbed during the adsorption process of the battery cell (10). ) can be adsorbed one by one in order.

The above detailed description should not be construed as restrictive in any respect and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims

a pair of first guide bars disposed opposite each other in a first direction and having opposing surfaces including a flat first surface and a curved second surface;

an elevating table on which battery cells are stacked to ascend and descend between the pair of first guide bars; and

It includes an adsorption table that adsorbs the topmost battery cell among the stacked battery cells,

The suction table is,

A battery cell adsorption device comprising a shock bar that applies an impact to the uppermost battery cell to separate the battery cells attached to the lower part of the uppermost battery cell.
According to paragraph 1,

The shock bar is,

A battery cell adsorption device characterized in that an impact is applied to the uppermost battery cell, which is raised and lowered between the second surfaces and bent upward, to bend downward.
According to paragraph 2,

The shock bar is,

A battery cell adsorption device comprising an elastic member that applies elastic force to push out the portion in contact with the uppermost battery cell.
According to paragraph 1,

The suction table is,

It includes an adsorption pad that generates adsorption force to adsorb the uppermost battery cell,

The shock bar is,

A battery cell adsorption device characterized in that it protrudes downward from the adsorption pad.
According to paragraph 4,

The shock bar is,

A plurality of pieces are located spaced apart along the first direction,

The suction pad is,

A battery cell adsorption device characterized in that a plurality of shock bars are spaced apart from each other in a second direction perpendicular to the first direction.
According to paragraph 1,

A pair of second guide bars are disposed opposite each other in a second direction perpendicular to the first direction and the opposing surfaces include a flat third surface,

The lifting table is a battery cell adsorption device characterized in that it rises and falls between the pair of first guide bars and the pair of second guide bars.
According to clause 6,

The second guide bar further includes a curved fourth surface,

The shock bar is,

A battery cell adsorption device that lifts between the second surface and the fourth surface and applies an impact to the uppermost battery cell, which is bent upward, to bend downward.
According to paragraph 1,

The lifting table is,

A battery cell adsorption device having a size smaller than that of the battery cell and spaced apart from the first guide bar.
According to paragraph 1,

The battery cell adsorption device is located on the top of the first guide bar and further includes a brush that rubs against the side of the uppermost battery cell.
Elevating the stacked battery cells through a lifting table that moves up and down between a pair of guide bars arranged opposite to each other;

The stacked battery cells are raised and lowered between curved surfaces included in opposing surfaces of the pair of guide bars and bent upward from the topmost battery cell;

separating the battery cells attached to the lower part of the uppermost battery cell by applying an impact to the uppermost battery cell through a shock bar of an adsorption table so that the uppermost battery cell is bent downward; and

A battery cell adsorption method comprising the step of adsorbing the uppermost battery cell through an adsorption pad of the adsorption table.
According to clause 10,

The step of bending toward the upper side is,

A battery cell adsorption method, characterized in that at least a central portion between the uppermost battery cell and the battery cell attached to the lower part of the uppermost battery cell is separated from each other.
According to clause 10,

The step of separating the battery cells is,

A method of adsorbing a battery cell, characterized in that the shock bar applies elastic force to push out the portion in contact with the uppermost battery cell that is bent upward.
According to clause 10,

The step of separating the battery cells is,

A method of adsorbing a battery cell, characterized in that static electricity is removed between the uppermost battery cell and a battery cell attached to a lower portion of the uppermost battery cell through a brush that rubs against the side of the uppermost battery cell.