Electrode stacking equipment for secondary battery

Abstract

The purpose of the present invention is to provide electrode stacking equipment for a secondary battery. The electrode stacking equipment for a secondary battery according to the present invention comprises: a stacking table (120); a positive electrode supply module for stacking a positive electrode (12) on the stacking table (120); a stacking process module for stacking a separator (16) on the positive electrode (12) in a state in which the positive electrode (12) is placed on the stacking table (120) by the positive electrode supply module; and a negative electrode supply module for stacking a negative electrode (14) on the separator (16) in a state in which the separator (16) is stacked on the positive electrode (12) by the stacking process module.

Description

Electrode stacking equipment for secondary batteries

[0001] The present invention relates to electrode stacking equipment for secondary batteries, and more specifically, to electrode stacking equipment for secondary batteries that manufactures battery cells in a zigzag stacking manner during the manufacturing process of secondary batteries.

[0002]

[0003] The secondary battery is configured such that an electrode roll, in which a positive electrode, a separator, and a negative electrode are wound together, is housed inside a can connected to the negative electrode.

[0004] At this time, there is a method in which a battery cell is formed by stacking a positive electrode, a negative electrode, and a separator in a zigzag pattern during the secondary battery manufacturing process, and then inserted into an outer mold in the form of a can or pouch to complete the secondary battery. After forming the battery cell by interposing the separator in a zigzag pattern between the positive and negative electrodes, the secondary battery is manufactured by proceeding with subsequent processes, such as placing the battery cell into a pouch and sealing it.

[0005] There is an urgent need for automated electrode stacking equipment that enables the smooth and precise execution of the process of forming battery cells by stacking separators in a zigzag pattern between positive and negative electrodes.

[0006]

[0007] The objective of the present invention is to provide electrode stacking equipment for secondary batteries that efficiently manufactures battery cells using a zigzag stacking method during the manufacturing process of secondary batteries.

[0008]

[0009] According to the present invention for solving the above-mentioned problem, an electrode stacking device for a secondary battery is provided, comprising: a stacking table (120); a positive electrode supply module for stacking a positive electrode (12) on the stacking table (120); a stacking process module for stacking a separator (16) on the positive electrode (12) while the positive electrode (12) is placed on the stacking table (120) by the positive electrode supply module; and a negative electrode supply module for stacking a negative electrode (14) on the separator (16) while the separator (16) is stacked on the positive electrode (12) by the stacking process module.

[0010] The positive electrode supply module comprises a first position positive electrode pickup pad (134) for picking up positive electrodes (12) stacked in a positive electrode feeding magazine (132) one by one, a positive electrode transfer table (135) disposed between the positive electrode feeding magazine (132) and the stacking table (120), and a second position positive electrode pickup pad (136) for picking up positive electrodes (12) picked up by the first position positive electrode pickup pad (134) and placed on the positive electrode transfer table (135), and stacking the positive electrodes (12) one by one onto the stacking table (120). The negative electrode supply module comprises a first position negative electrode pickup pad (144) for picking up negative electrodes (14) stacked in a negative electrode feeding magazine (142) one by one, and a negative electrode transfer table disposed between the negative electrode feeding magazine (142) and the stacking table (120). The apparatus is characterized by including a table (145) and a second position negative electrode pickup pad (146) that picks up a negative electrode (14) picked up by the first position negative electrode pickup pad (144) and placed on the negative electrode transfer table (145), and stacks the negative electrodes (14) one by one onto the stacking table (120).

[0011] The first position positive pickup pad (134) and the second position positive pickup pad (136) are mounted on the positive pad moving frame (137), and the positive pad moving frame (137) is reciprocated in the Y-axis direction so that the first position positive pickup pad (134) and the second position positive pickup pad (136) are reciprocated in the Y-axis direction, and the first position negative pickup pad (144) and the second position negative pickup pad (146) are mounted on the negative pad moving frame (147), and the negative pad moving frame (147) is reciprocated in the Y-axis direction so that the first position negative pickup pad (144) and the second position negative pickup pad (146) are reciprocated in the Y-axis direction, and the stacking table (120) is reciprocated in the X-axis direction so that the positive electrode transfer table (135) and the negative electrode transfer table (145) are alternately moved in the Y-axis direction The stacking process module is configured to be positioned facing each other, and is supported and installed on a main frame (112) so as to be positioned above the stacking table (120). The secondary battery cell (10) is formed by repeating a stacking process on the stacking table (120) such that a separator (16) is interposed between the positive electrode (12) and the negative electrode (14) through the combined operation of the positive electrode supply module, the negative electrode supply module, the stacking process module, and the stacking table (120).

[0012] The stacking process module comprises a separator supply frame (152) positioned above the stacking table (120), an anode electrode side mandrel (122) entering toward the stacking table (120), a cathode electrode side mandrel (124) entering toward the stacking table (120), and a separator direction change guide roll unit (160) positioned between the stacking table (120) and the separator supply frame (152). When a single anode electrode (12) is stacked on the stacking table (120), the anode electrode side mandrel (122) contacts a portion of the upper surface on one side of the anode electrode (12) to fix the anode electrode (12) on the stacking table (120), and the separator is connected to the stacking table (120) by passing through the separator direction change guide roll unit (160) from the separator supply frame (152). When the separator (16) is supplied and the stacking table (120) moves in the X-axis direction to stack the separator (16) on the positive electrode (12), the stacking position of the separator (16) is switched by the separator direction change guide roll unit (160), and the separator (16) is caught on the positive electrode side mandrel (122) so that the separator (16) covers the positive electrode (12). Then, when a negative electrode (14) is stacked on the separator (16) stacked on the positive electrode (12), the negative electrode side mandrel (124) contacts a part of the upper surface on one side of the negative electrode (14) to fix the negative electrode (14) on the stacking table (120), and the separator supply frame (152) is connected to the stacking table (120). While the separator (16) is supplied, the stacking table (120) moves in the X-axis direction,When stacking the separator (16) on the cathode electrode (14) by moving in the opposite direction to the direction in which the separator (16) moved to cover the positive electrode (12), the stacking position of the separator (16) is switched by the separator direction change guide roll unit (160), and the separator (16) is caught on the cathode electrode side mandrel (124) to be stacked so that the separator (16) covers the cathode electrode (14). The process of the positive electrode side mandrel (122) fixing the positive electrode (12) on the stacking table (120) and stacking the separator (16) to cover the positive electrode (12), and the cathode electrode side mandrel (124) fixing the cathode electrode (14) on the stacking table (120) and stacking the separator (16) to cover the cathode electrode (14) is repeated to obtain a plurality of positive electrodes. It is characterized by being configured to form a secondary battery cell (10) in which a separator (16) is laminated between an electrode (12) and a negative electrode (14).

[0013] The apparatus further comprises: a withdrawal gripper (170) that grips and withdraws a battery cell (10) from the stacking table (120); a cutting unit (180) that cuts a separator (16) connected to the stacking table (120) from the battery cell (10) withdrawn from the stacking table (120) by the withdrawal gripper (170); a cutting separator gripper (190) that grips and supports the separator (16) cut by the cutting unit (180) and is slidably supported on a main frame (112) so as to be movable toward the withdrawal gripper (170); and a battery cell rotation unit that rotates the battery cell (10) while the cutting separator gripper (190) grips the separator (16) connected to the battery cell (10) so that a part of the separator (16) covers the outer surface of the battery cell (10). The positive electrode (12) and negative electrode (14) forming the electrode cell (10) are made of lithium metal, the first position positive pickup pad (134) and the first position negative pickup pad (144), which are primary P&P pads, are vacuum suction pads, the second position positive pickup pad (136) and the second position negative pickup pad (146), which are secondary P&P pads, are made of Al hard and PP materials, and the positive electrode side mandrel (122) and negative electrode side mandrel (124), which are in contact with the positive electrode (12) and negative electrode (14) made of lithium metal material, are formed by applying a silane coating.

[0014] The battery cell (10) is rotated by the battery cell rotation unit to block a portion of the separator (16) from the outer surface of the battery cell (10), and the remaining portion of the separator (16) is pressed toward the battery cell (10) as a finishing step.

[0015]

[0016] Since the electrode stacking equipment for secondary batteries according to the present invention stacks the negative electrode and the positive electrode together with a separator at high speed, productivity is improved and the quality of the secondary battery cell can also be expected to improve.

[0017] In addition, the present invention has the effect of forming a secondary battery cell having a structure in which a separator is stacked between multiple positive electrodes and negative electrodes by repeating the stacking operation by repeating the positive electrode stacking operation in which a positive electrode is placed one by one on a separator scanned on a stacking table by operating the first position positive electrode pickup pad and the second position positive electrode pickup pad, and the negative electrode stacking operation in which a positive electrode is placed one by one on a separator scanned on a stacking table by operating the first position negative electrode pickup pad and the second position negative electrode pickup pad, thereby forming a battery cell for a secondary battery having a structure in which a separator is stacked between multiple positive electrodes and negative electrodes. This enables the process of forming a battery cell by stacking a separator in a zigzag shape between a positive electrode and a negative electrode to be performed smoothly and precisely as an automated process.

[0018]

[0019] FIG. 1 is a plan view schematically showing the structure of a stacking table, a positive electrode feeding magazine, a positive electrode transfer table, a negative electrode feeding magazine, and a negative electrode transfer table, which are the main parts of an electrode stacking equipment for a secondary battery according to the present invention.

[0020] FIG. 2 is a plan view schematically showing a state in which a stacking table, which is a main part of an electrode stacking equipment for a secondary battery according to the present invention, has moved toward a positive electrode transfer table, and a state in which a first position positive pickup pad, a second position positive pickup pad, a first position negative pickup pad, and a second position negative pickup pad have advanced toward a positive electrode feeding magazine and a negative electrode feeding magazine, respectively.

[0021] FIG. 3 is a plan view schematically showing the process of the first position positive pickup pad and the second position positive pickup pad shown in FIG. 2 retracting to stack positive electrodes on a stacking table.

[0022] FIG. 4 is a plan view schematically showing the state in which the stacking table, which is a main part of the electrode stacking equipment for a secondary battery according to the present invention, has moved toward the negative electrode transfer table, and the state in which the first position positive electrode pickup pad, the second position positive electrode pickup pad, the first position negative electrode pickup pad, and the second position negative electrode pickup pad have advanced toward the positive electrode feeding magazine and the negative electrode feeding magazine, respectively.

[0023] FIG. 5 is a plan view schematically showing the process of the first position cathode pickup pad and the second position cathode pickup pad shown in FIG. 4 retracting to stack cathode electrodes on a stacking table.

[0024] FIG. 6 is a photograph showing the stacking table, which is a main part of the present invention, moved toward the positive electrode transfer table, with the positive electrode stacked on the stacking table and the separator stacked on the positive electrode.

[0025] FIGS. 7 and FIGS. 8 are photographs showing the process of stacking a positive electrode on a separator shown in FIG. 6.

[0026] FIGS. 9 and FIGS. 10 are photographs showing the stacking table, which is a main part of the present invention, moved toward the cathode electrode transfer table, with the cathode electrode stacked on the stacking table and the separator stacked on the cathode electrode.

[0027] FIG. 11 is a photograph showing the process in which the stacking table illustrated in FIG. 9 and FIG. 10 moves back toward the anode electrode transfer table to stack the next anode electrode on the separator stacked on the cathode electrode.

[0028] FIG. 12 is a photograph showing a state in which a battery cell, stacked with a separator interposed between a plurality of positive electrodes and a negative electrode by the electrode stacking equipment for a secondary battery according to the present invention, is moved toward the battery cell to be extracted by an extraction gripper.

[0029] FIG. 13 is a photograph showing the state in which the withdrawal gripper, which is the main part illustrated in FIG. 12, grips the battery cell.

[0030] FIG. 14 is a photograph showing the process of the withdrawal gripper illustrated in FIG. 13 withdrawing a battery cell.

[0031] FIG. 15 is a photograph showing the state in which the separator is gripped and fixed on the stacking table by the positive electrode side mandrel and the negative electrode side mandrel provided on the stacking table while the withdrawal gripper illustrated in FIG. 14 is stopped after withdrawing the battery cell.

[0032] FIG. 16 is a photograph showing the process of cutting a separator by the cutting unit illustrated in FIG. 15,

[0033] FIGS. 17 to 19 are photographs schematically showing the process of moving the battery cell and the cut separator by moving them again by the withdrawal gripper after the cutting of the separator shown in FIG. 16 is completed.

[0034] FIGS. 20 and 21 are photographs showing the process of gripping a battery cell with a long separator by the first rotation upper mandrel, the first rotation lower mandrel, the second rotation upper mandrel, and the second rotation lower mandrel, which are the main parts of the rotation unit.

[0035] FIGS. 22 to 24 are photographs showing a battery cell having a long separator, which is rotated 180 degrees while being gripped by the first rotation upper mandrel, the first rotation lower mandrel, the second rotation upper mandrel, and the second rotation lower mandrel, which are the main parts of the rotation unit.

[0036] FIG. 25 is a photograph showing the state in which the withdrawal gripper has entered toward the battery cell illustrated in FIG. 24.

[0037] FIG. 26 is a photograph showing the first rotation upper mandrel, the first rotation lower mandrel, the second rotation upper mandrel, and the second rotation lower mandrel, which are the main parts of the rotation unit illustrated in FIG. 25, in a state where they have been removed from the outside of the battery cell.

[0038] FIG. 27 is a photograph showing the process of the pull-out gripper illustrated in FIG. 26 pressing the battery cell from above and below.

[0039] FIG. 28 is a photograph showing the state in which the first rotation upper mandrel, the first rotation lower mandrel, the second rotation upper mandrel, and the second rotation lower mandrel, which are the main parts of the rotation unit, re-enter the battery cell and grip the battery cell from above and below after the withdrawal gripper illustrated in FIG. 27 presses the battery cell.

[0040] FIG. 29 is a photograph showing the state in which the withdrawal gripper illustrated in FIG. 28 is rotated back out of the battery cell to leave a finishing separator on one side of the battery cell and the battery cell is rotated so that it is positioned vertically.

[0041] FIGS. 30 to 34 are photographs showing the process in which a separator push-contact panel, which is another key part of the present invention, descends to adhere a finishing separator to one side of a battery cell.

[0042] FIG. 35 is a photograph showing the state in which the battery cell is rotated horizontally and the extraction gripper re-enters the battery cell while the finishing separator is in close contact with one side of the battery cell in FIG. 34.

[0043] Figure 36 is a photograph showing the process in which the upper withdrawal grip block and the lower withdrawal grip block, which are the main parts of the withdrawal gripper illustrated in Figure 35, press the battery cell from above and below.

[0044]

[0045] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. The objectives, features, and advantages of the present invention will be more easily understood by referring to the attached drawings and the following detailed description. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the present invention, such detailed description is omitted.

[0046] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the present invention. These terms are intended only to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by the terms. For example, if it is stated that a component is "connected," "combined," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but that another component may also be "connected," "combined," or "connected" between each component.

[0047]

[0048] FIG. 1 is a plan view schematically showing the structure of a stacking table, a positive electrode feeding magazine, a positive electrode transfer table, a negative electrode feeding magazine, and a negative electrode transfer table, which are the main parts of an electrode stacking equipment for a secondary battery according to the present invention; FIG. 2 is a plan view schematically showing the state in which the stacking table, which is the main part of an electrode stacking equipment for a secondary battery according to the present invention, has moved toward the positive electrode transfer table, and the state in which the first position positive pickup pad, the second position positive pickup pad, the first position negative pickup pad, and the second position negative pickup pad have advanced toward the positive electrode feeding magazine and the negative electrode feeding magazine, respectively; FIG. 3 is a plan view schematically showing the process of stacking a positive electrode on the stacking table by retracting the first position positive pickup pad and the second position positive pickup pad shown in FIG. 2; FIG. 4 is a plan view schematically showing the state in which the stacking table, which is the main part of an electrode stacking equipment for a secondary battery according to the present invention, has moved toward the negative electrode transfer table, and the first position positive pickup A plan view schematically showing the state in which the pad, the second position positive pickup pad, the first position negative pickup pad, and the second position negative pickup pad are advanced toward the positive electrode feeding magazine and the negative electrode feeding magazine, respectively; FIG. 5 is a plan view schematically showing the process in which the first position negative pickup pad and the second position negative pickup pad shown in FIG. 4 are retracted to stack a negative electrode on a stacking table; FIG. 6 is a photograph showing the state in which the stacking table, which is a main part of the present invention, moves toward the positive electrode transfer table and the state in which the positive electrode is stacked on the stacking table and the state in which the separator is stacked on the positive electrode; FIG. 7 and FIG. 8 are photographs showing the process of stacking a positive electrode on the separator shown in FIG. 6; FIG. 9 and FIG. 10 are photographs showing the state in which the stacking table, which is a main part of the present invention, moves toward the negative electrode transfer table and the state in which the negative electrode is stacked on the stacking table and the state in which the separator is stacked on the negative electrode.FIG. 11 is a photograph showing the process in which the stacking table illustrated in FIG. 9 and FIG. 10 moves back toward the positive electrode transfer table to stack the next positive electrode on the separator stacked on the negative electrode; FIG. 12 is a photograph showing the state in which a pull-out gripper moves toward a battery cell to pull out a battery cell in which a separator is interposed between multiple positive electrodes and negative electrodes by the electrode stacking equipment for a secondary battery according to the present invention; FIG. 13 is a photograph showing the state in which the pull-out gripper, which is the main part illustrated in FIG. 12, grips the battery cell; FIG. 14 is a photograph showing the process in which the pull-out gripper illustrated in FIG. 13 pulls out the battery cell; FIG. 15 is a photograph showing the state in which the pull-out gripper illustrated in FIG. 14, after pulling out the battery cell, stops and grips and fixes the separator on the stacking table by the positive electrode-side mandrel and the negative electrode-side mandrel provided on the stacking table; FIG. 16 is a photograph showing the separator by the cutting unit illustrated in FIG. 15 A photograph showing the cutting process; FIGS. 17 to 19 are photographs schematically showing the process of moving the battery cell and the cut separator by moving them again by the pull-out gripper after the cutting of the separator shown in FIG. 16 is completed; FIGS. 20 and 21 are photographs showing the process of gripping the battery cell with the separator extended by the first rotation upper mandrel, the first rotation lower mandrel, the second rotation upper mandrel, and the second rotation lower mandrel, which are the main parts of the rotation unit; FIGS. 22 to 24 are photographs showing the state in which the battery cell with the separator extended is rotated 180 degrees while being gripped by the first rotation upper mandrel, the first rotation lower mandrel, the second rotation upper mandrel, and the second rotation lower mandrel, which are the main parts of the rotation unit; FIG. 25 is a photograph showing the state in which the pull-out gripper has entered toward the battery cell shown in FIG. 24.FIG. 26 is a photograph showing the first rotation upper mandrel, the first rotation lower mandrel, the second rotation upper mandrel, and the second rotation lower mandrel, which are the main parts of the rotation unit illustrated in FIG. 25, in a state where they have withdrawn to the outside of the battery cell; FIG. 27 is a photograph showing the process of the pull-out gripper illustrated in FIG. 26 pressing the battery cell from above and below; FIG. 28 is a photograph showing the state where the first rotation upper mandrel, the first rotation lower mandrel, the second rotation upper mandrel, and the second rotation lower mandrel, which are the main parts of the rotation unit, have re-entered the battery cell and are gripping the battery cell from above and below after the pull-out gripper illustrated in FIG. 27 has withdrawn to the outer region of the battery cell and is rotated again to leave a finishing separator on one side of the battery cell, and the battery cell is rotated to stand upright in a vertical direction; FIG. 30 to FIG. Fig. 34 is a photograph showing the process in which a separator push-contact panel, which is another main part of the present invention, descends to adhere a finishing separator to one side of a battery cell; Fig. 35 is a photograph showing the state in which the battery cell is rotated horizontally and the pull-out gripper re-enters the battery cell while the finishing separator is adhered to one side of the battery cell in Fig. 34; and Fig. 36 is a photograph showing the process in which the upper pull-out grip block and the lower pull-out grip block, which are main parts of the pull-out gripper illustrated in Fig. 35, press the battery cell from above and below.

[0049] Referring to the drawings, the electrode stacking equipment for a secondary battery according to the present invention comprises a stacking table (120), a positive electrode supply module for stacking a positive electrode (12) on the stacking table (120), a stacking process module for stacking a separator (16) on the positive electrode (12) while the positive electrode (12) is placed on the stacking table (120) by the positive electrode supply module, and a negative electrode supply module for stacking a negative electrode (14) on the separator (16) while the separator (16) is stacked on the positive electrode (12) by the stacking process module, wherein the negative electrode (14) is stacked on the separator (16) by the negative electrode supply module and the separator (16) is stacked on the negative electrode (14) by the stacking process module, and the separator (16) is placed between the positive electrode (12) and the negative electrode (14). The process of stacking is repeated to form a secondary battery cell (10).

[0050] The above positive electrode supply module includes a first position positive electrode pickup pad (134), a positive electrode transfer table (135), and a second position positive electrode pickup pad (136).

[0051] In the present invention, a positive side pad moving frame is coupled to a main frame (112) so as to be movable in the Y-axis direction, and a structure is formed in which a first position positive pickup pad (134) and a second position positive pickup pad (136) are coupled to the positive side pad moving frame. The first position positive pickup pad (134) and the second position positive pickup pad (136) are mounted on the positive side pad moving frame at a certain distance apart along the Y-axis direction with respect to the main frame (112).

[0052] At this time, the positive side pad moving frame may be connected to the cylinder rod of the positive side pad moving drive cylinder mounted on the main frame (112), so that the positive side pad moving frame can be configured to move in the Y-axis direction of the main frame (112) by the extension and retraction operation of the cylinder rod of the positive side pad moving drive cylinder.

[0053] Meanwhile, the positive side pad moving frame may be connected to the positive side pad moving ball screw and the positive side pad moving ball screw nut on the motor shaft of the positive side pad moving drive motor mounted on the main frame (112), so that the positive side pad moving frame can move in the Y-axis direction of the main frame (112) as the motor shaft of the positive side pad moving drive motor rotates in forward and reverse directions.

[0054] A positive side pad moving drive motor is mounted on the main frame (112), a positive side pad moving ball screw is coupled to the motor shaft of the positive side pad moving drive motor, a positive side pad moving ball screw nut is coupled to the outer surface of the positive side pad moving ball screw, and the positive side pad moving ball screw nut is coupled to the positive side pad moving frame, so that when the motor shaft of the positive side pad moving drive motor and the positive side pad moving ball screw rotate in forward and reverse directions, the positive side pad moving ball screw nut and the positive side pad moving frame can reciprocate along the Y-axis direction of the main frame (112).

[0055] In the present invention, any device capable of reciprocating the anode pad moving frame (137) along the Y-axis direction of the main frame (112), in addition to the anode side moving drive cylinder or anode side moving drive motor, may be employed.

[0056] The first position positive pickup pad (134) and the second position positive pickup pad (136) are mounted on the positive side pad moving frame, so that when the positive pad moving frame (137) moves back and forth along the Y-axis direction of the main frame (112), the first position positive pickup pad (134) and the second position positive pickup pad (136) can also move back and forth along the Y-axis direction of the main frame (112).

[0057] The positive electrode feeding magazine (132) and the positive electrode transfer table (135) are arranged at a certain distance apart along the Y-axis direction of the main frame (112).

[0058] The anode electrode transfer table (135) is placed between the anode electrode feeding magazine (132) and the stacking table (120).

[0059] The first position positive electrode pickup pad (134) has the function of picking up positive electrodes (12) one by one from among the multiple positive electrodes (12) stacked in the positive electrode feeding magazine (132).

[0060] With the anode pad moving frame (137) advanced toward the anode electrode feeding magazine (132), the first position anode pickup pad (134) is positioned above the uppermost anode electrode (12) among the multiple anode electrodes (12) stacked in the anode electrode feeding magazine (132), and in this state, the first position anode pickup pad (134) is lowered by a lifting means.

[0061] At this time, the lifting means is composed of a lifting drive cylinder mounted on the anode pad moving frame (137), and the upper surface of the first position anode pickup pad (134) is coupled to the cylinder rod of the lifting drive cylinder. When the cylinder rod of the lifting drive cylinder is operated to lower, the first position anode pickup pad (134) lowers and comes into contact with the uppermost anode electrode (12) loaded in the anode electrode feeding magazine (132), and the uppermost anode electrode (12) can be adsorbed and picked up by the vacuum pressure acting on the first position anode pickup pad (134).

[0062] Next, when the cylinder rod of the lifting drive cylinder is operated to rise, the first position positive pickup pad (134) rises and picks up the uppermost positive electrode (12) loaded in the positive electrode feeding magazine (132) onto the positive electrode feeding magazine (132).

[0063] Meanwhile, a suction pickup member (134SP) is mounted at each of the four positions (front, back, left, and right) on the first position positive pickup pad (134), and the suction pickup member (134SP) is connected to an external suction vacuum device via a vacuum connection hose, so that vacuum suction pressure is applied to the multiple suction pickup members (134SP) in the suction vacuum device. When the cylinder rod of the lifting drive cylinder is operated to rise while the first position positive pickup pad (134) has adsorbed the uppermost positive electrode (12) loaded in the positive electrode feeding magazine (132) with vacuum suction pressure, the first position positive pickup pad (134) rises and can pick up the uppermost positive electrode (12) loaded in the positive electrode feeding magazine (132) onto the positive electrode feeding magazine (132).

[0064] The second position positive electrode pickup pad (136) has the function of picking up the positive electrode (12) that the first position positive electrode pickup pad (134) has picked up and placed on the positive electrode transfer table (135), and stacking the positive electrodes (12) one by one onto the stacking table (120). A suction chamber is formed inside the second position positive electrode pickup pad (136), and a suction hole penetrating both sides is provided in the lower pad plate of the second position positive electrode pickup pad (136). An external suction device is connected to the second position positive electrode pickup pad (136) via a suction connection hose, so that the vacuum suction pressure acting from the suction device acts on the suction hole provided in the lower pad plate of the second position positive electrode pickup pad (136), thereby enabling the second position positive electrode pickup pad (136) to pick up the positive electrode (12) by vacuum suction pressure.

[0065] When the anode pad moving frame (137) moves from a state of being advanced toward the anode electrode feeding magazine (132) to a state of being retracted, the first position anode pickup pad (134) is placed above the anode electrode transfer table (135), and the second position anode pickup pad (136) is placed above the position where the stacking table (120) moves in.

[0066] Next, when the cylinder rod of the lifting drive cylinder lowers the first position positive pickup pad (134), one positive electrode (12) adsorbed by the first position positive pickup pad (134) comes into contact with the positive electrode transfer table (135).

[0067] Next, when the cylinder rod of the lifting drive cylinder is raised while the suction pressure acting on the first position positive pickup pad (134) is released, one positive electrode (12) adsorbed by the first position positive pickup pad (134) is placed on the positive electrode transfer table (135).

[0068] Next, when the anode pad moving frame (137) is advanced again toward the anode electrode feeding magazine (132), the first position anode pickup pad (134) is positioned above the anode electrode feeding magazine (132) so as to pick up one anode electrode (12) in the next turn, and the second position anode pickup pad (136) is positioned on one anode electrode (12) placed on the anode electrode transfer table (135) so as to be positioned to pick up the anode electrode (12).

[0069] In this state, the first position positive electrode pickup pad (134) is lowered by the lowering of the cylinder rod of the lifting drive cylinder, which is the lifting means described above, and at the same time, the second position positive electrode (12) pickup pad is lowered by the lifting means.

[0070] At this time, the lifting means of the second position positive electrode (12) pickup pad is also composed of a lifting drive cylinder mounted on the positive pad moving frame (137), and the upper surface of the second position positive electrode pickup pad (136) is coupled to the cylinder rod of the lifting drive cylinder, so that when the cylinder rod of the lifting drive cylinder is operated to lower, the second position positive electrode pickup pad (136) lowers and comes into contact with a single positive electrode (12) placed on the positive electrode transfer table (135), and the single positive electrode (12) placed on the positive electrode transfer table (135) can be adsorbed and picked up by the vacuum pressure acting on the second position positive electrode (12) pickup pad.

[0071] Next, when the cylinder rod of the lifting drive cylinder for lifting the first position positive electrode pickup pad (134) rises and simultaneously the cylinder rod of the lifting drive cylinder for lifting the second position positive electrode (12) pickup pad also rises, the pickup pad of the first position positive electrode (12) rises to pick up the next positive electrode (12) from the positive electrode feeding magazine (132), and simultaneously the second position positive electrode pickup pad (136) rises to pick up the positive electrode (12) from the positive electrode delivery table (135).

[0072] Next, when the anode pad moving frame (137) moves backward from a state where it has advanced toward the anode electrode feeding magazine (132), the first position anode pickup pad (134) is placed above the anode electrode transfer table (135), and the second position anode pickup pad (136) is placed above the position where the stacking table (120) moves in, and the stacking table (120) moves to a position below the second position anode pickup pad (136).

[0073] Of course, the two positive electrode side mandrels (122) on the upper side of one side of the stacking table (120) are stacked by fixing the separator (16) on the stacking table (120).

[0074] In this state, the first position positive pickup pad (134) is lowered toward the positive electrode transfer table (135) by lowering the cylinder rods of the lifting drive cylinders, thereby releasing the suction pressure acting on the first position positive pickup pad (134) to place the next positive electrode plate on the positive electrode transfer table (135), and at the same time, the second position positive pickup pad (136) is lowered toward the stacking table (120) to place the positive electrode (12) picked up by the second position positive pickup pad (136) on the separator (16) on the stacking table (120), and when the vacuum pressure of the second position positive pickup pad (136) is released, the positive electrode (12) is stacked on the separator (16) on the stacking table (120).

[0075] The above-described cathode electrode supply module includes a first position cathode pickup pad (144), a cathode electrode transfer table (145), and a second position cathode pickup pad (146).

[0076] In the present invention, a cathode-side pad moving frame is coupled to a main frame (112) so as to be movable in the Y-axis direction, and a first position cathode pickup pad (144) and a second position cathode pickup pad (146) are coupled to the cathode-side pad moving frame. The first position cathode pickup pad (144) and the second position cathode pickup pad (146) are mounted on the cathode-side pad moving frame at a certain distance apart along the Y-axis direction with respect to the main frame (112).

[0077] At this time, the negative side pad moving frame may be connected to the cylinder rod of the negative side pad moving drive cylinder mounted on the main frame (112), so that the negative side pad moving frame can be moved in the Y-axis direction of the main frame (112) by the extension and retraction operation of the cylinder rod of the negative side pad moving drive cylinder.

[0078] Meanwhile, the negative side pad moving frame may be connected to a negative side pad moving ball screw and a negative side pad moving ball screw nut on the motor shaft of a negative side pad moving drive motor mounted on the main frame (112), so that the negative side pad moving frame can move in the Y-axis direction of the main frame (112) as the motor shaft of the negative side pad moving drive motor rotates in forward and reverse directions.

[0079] A negative side pad moving drive motor is mounted on the main frame (112), a negative side pad moving ball screw is coupled to the motor shaft of the negative side pad moving drive motor, a negative side pad moving ball screw nut is coupled to the outer surface of the negative side pad moving ball screw, and the negative side pad moving ball screw nut is coupled to the negative side pad moving frame, so that when the motor shaft of the negative side pad moving drive motor and the negative side pad moving ball screw rotate in forward and reverse directions, the negative side pad moving ball screw nut and the negative side pad moving frame can reciprocate along the Y-axis direction of the main frame (112).

[0080] In the present invention, any device capable of reciprocating the cathode pad moving frame (147) along the Y-axis direction of the main frame (112), in addition to the cathode side moving drive cylinder or the cathode side moving drive motor, may be employed.

[0081] The first position negative pickup pad (144) and the second position negative pickup pad (146) are mounted on the negative side pad moving frame, so that when the negative pad moving frame (147) moves back and forth along the Y-axis direction of the main frame (112), the first position negative pickup pad (144) and the second position negative pickup pad (146) can also move back and forth along the Y-axis direction of the main frame (112).

[0082] The cathode electrode feeding magazine (142) and the cathode electrode transfer table (145) are arranged at a certain distance apart along the Y-axis direction of the main frame (112).

[0083] The above cathode electrode transfer table (145) is placed between the cathode electrode feeding magazine (142) and the stacking table (120).

[0084] The first position negative electrode pickup pad (144) above functions to pick up one negative electrode (14) from among a plurality of negative electrodes (14) stacked in the negative electrode feeding magazine (142).

[0085] With the above-mentioned cathode pad moving frame (147) advanced toward the cathode electrode feeding magazine (142), the first position cathode pickup pad (144) is positioned above the uppermost cathode electrode (14) among the cathode electrodes (14) stacked in multiple layers in the cathode electrode feeding magazine (142), and in this state, the first position cathode pickup pad (144) is lowered by a lifting means.

[0086] At this time, the lifting means is composed of a lifting drive cylinder mounted on the cathode pad moving frame (147), and the upper surface of the first position cathode pickup pad (144) is coupled to the cylinder rod of the lifting drive cylinder. When the cylinder rod of the lifting drive cylinder is operated to lower, the first position cathode pickup pad (144) lowers and comes into contact with the uppermost cathode electrode (14) loaded in the cathode electrode feeding magazine (142), and the uppermost cathode electrode (14) can be adsorbed and picked up by the vacuum pressure acting on the first position cathode pickup pad (144).

[0087] Next, when the cylinder rod of the lifting drive cylinder is operated to rise, the first position negative electrode pickup pad (144) rises and picks up the uppermost negative electrode (14) loaded in the negative electrode feeding magazine (142) onto the negative electrode feeding magazine (142).

[0088] Meanwhile, a suction pickup member (144SP) is mounted at each of the four positions (front, back, left, and right) on the cathode electrode (14) pickup pad, and the suction pickup member (144SP) is connected to an external suction vacuum device via a vacuum connection hose, so that vacuum suction pressure is applied to the multiple suction pickup members (144SP) in the suction vacuum device. When the cylinder rod of the lifting drive cylinder is operated to rise while the first position cathode electrode pickup pad (144) adsorbs the uppermost cathode electrode (14) loaded in the cathode electrode feeding magazine (142) with vacuum suction pressure, the first position cathode electrode pickup pad (144) rises and can pick up the uppermost cathode electrode (14) loaded in the cathode electrode feeding magazine (142) onto the cathode electrode feeding magazine (142).

[0089] The second position negative electrode pickup pad (146) functions to pick up the negative electrode (14) that has been picked up by the first position negative electrode pickup pad (144) and placed on the negative electrode transfer table (145), and to stack the negative electrodes (14) one by one onto the stacking table (140). A suction chamber is formed inside the second position negative electrode pickup pad (146), and a suction hole penetrating both sides is provided in the lower pad plate of the second position negative electrode pickup pad (146). An external suction device is connected to the second position negative electrode pickup pad (146) via a suction connection hose, so that the vacuum suction pressure acting from the suction device acts on the suction hole provided in the lower pad plate of the second position negative electrode pickup pad (146), thereby enabling the second position negative electrode pickup pad (146) to pick up the negative electrode (14) by vacuum suction pressure.

[0090] The second position negative electrode pickup pad (146) has the function of picking up the negative electrode (14) that the first position negative electrode pickup pad (144) has picked up and placed on the negative electrode transfer table (145), and stacking the negative electrodes (14) one by one onto the stacking table (120).

[0091] When the above-mentioned cathode pad moving frame (147) moves backward from a state where it has advanced toward the cathode electrode feeding magazine (142), the first position cathode pickup pad (144) is placed above the cathode electrode transfer table (145), and the second position cathode pickup pad (146) is placed above the position where the stacking table (120) moves in.

[0092] Next, when the cylinder rod of the lifting drive cylinder lowers the first position negative electrode pickup pad (144), one negative electrode (14) adsorbed by the first position negative electrode pickup pad (144) comes into contact with the negative electrode transfer table (145).

[0093] Next, when the cylinder rod of the lifting drive cylinder is raised while the suction pressure acting on the first position negative electrode pickup pad (144) is released, the negative electrode (14) adsorbed by the first position negative electrode pickup pad (144) is placed on the negative electrode transfer table (145).

[0094] Subsequently, when the cathode pad moving frame (147) is advanced again toward the cathode electrode feeding magazine (142), the first position cathode pickup pad (144) is positioned above the cathode electrode feeding magazine (142) so as to pick up one cathode electrode (14) in the next turn, and the second position cathode pickup pad (146) is positioned on one cathode electrode (14) placed on the cathode electrode transfer table (145) so as to be positioned to pick up the cathode electrode (14).

[0095] In this state, the first position negative electrode pickup pad (144) is lowered by the lowering of the cylinder rod of the lifting drive cylinder, which is the lifting means described above, and at the same time, the second position negative electrode (14) pickup pad is lowered by the lifting means.

[0096] At this time, the lifting means of the second position negative electrode (14) pickup pad is also composed of a lifting drive cylinder mounted on the negative pad moving frame (147), and the upper surface of the second position negative electrode pickup pad (146) is coupled to the cylinder rod of the lifting drive cylinder, so that when the cylinder rod of the lifting drive cylinder is operated to lower, the second position negative electrode pickup pad (146) lowers and comes into contact with a single negative electrode (14) placed on the negative electrode transfer table (145), and the single negative electrode (14) placed on the negative electrode transfer table (145) can be adsorbed and picked up by the vacuum pressure acting on the second position negative electrode (14) pickup pad.

[0097] Next, when the cylinder rod of the lifting drive cylinder for lifting the first position negative electrode pickup pad (144) rises and simultaneously the cylinder rod of the lifting drive cylinder for lifting the second position negative electrode (14) pickup pad also rises, the pickup pad of the first position negative electrode (14) rises to pick up the next negative electrode (14) from the negative electrode feeding magazine (142), and simultaneously the second position negative electrode pickup pad (146) rises to pick up the negative electrode (14) from the negative electrode transfer table (145).

[0098] Subsequently, when the cathode pad moving frame (147) moves backward from a state where it has advanced toward the cathode electrode feeding magazine (142), the first position cathode pickup pad (144) is placed above the cathode electrode transfer table (145), and the second position cathode pickup pad (146) is placed above the position where the stacking table (120) moves in, and the stacking table (120) moves to a position below the second position cathode pickup pad (146).

[0099] Of course, the two negative electrode side mandrels (124) on the upper side of one side of the stacking table (120) are stacked by fixing the separator (16) on the stacking table (120).

[0100] In this state, the first position negative electrode pickup pad (144) is lowered toward the negative electrode transfer table (145) by lowering the cylinder rods of the lifting drive cylinders to release the suction pressure acting on the first position negative electrode pickup pad (144) and place the next negative electrode plate on the negative electrode transfer table (145), and at the same time, the second position negative electrode pickup pad (146) is lowered toward the stacking table (120) to place the negative electrode (14) picked up by the second position negative electrode pickup pad (146) on the separator (16) on the stacking table (120), and when the vacuum pressure of the second position negative electrode pickup pad (146) is released, the negative electrode (14) is stacked on the separator (16) on the stacking table (120).

[0101] In the present invention, the first position positive pickup pad (134) and the second position positive pickup pad (136) are mounted on a positive pad moving frame (137), and the positive pad moving frame (137) is reciprocated in the Y-axis direction so that the first position positive pickup pad (134) and the second position positive pickup pad (136) are reciprocated in the Y-axis direction; the first position negative pickup pad (144) and the second position negative pickup pad (146) are mounted on a negative pad moving frame (147), and the negative pad moving frame (147) is reciprocated in the Y-axis direction so that the first position negative pickup pad (144) and the second position negative pickup pad (146) are reciprocated in the Y-axis direction; and the stacking table (120) is reciprocated in the X-axis direction so that the positive electrode transfer table (135) and the negative electrode transfer table (145) are reciprocated in the Y-axis direction. It is configured to be placed in alternating facing positions.

[0102] Additionally, the stacking process module includes a separator supply frame (152) positioned above the stacking table (120), an anode electrode side mandrel (122) entering toward the stacking table (120), a cathode electrode side mandrel (124) entering toward the stacking table (120), and a separator direction change guide roll unit (160) positioned between the stacking table (120) and the separator supply frame (152).

[0103] The above positive electrode side mandrel (122) is connected to the cylinder rod of a pair of mandrel moving cylinders provided on the stacking table (120), and can be configured so that the pair of positive electrode side mandrels (122) enter the upper part of the stacking table (120) or exit from the upper part of the stacking table (120) according to the extension and retraction operation of the cylinder rod of the mandrel moving cylinder. At this time, a pair of mandrel lifting cylinders are mounted on the stacking table (120), and the mandrel moving cylinder is mounted on the cylinder rod of the pair of mandrel lifting cylinders, so that the force pressing the positive electrode (12) on one side of the stacking table (120) by the pair of positive electrode side mandrels (122) or pressing the side of the positive electrode (12) from above is released according to the extension and retraction operation of the cylinder rod of the mandrel lifting cylinder.

[0104] The above-mentioned negative electrode side mandrel (124) is positioned parallel to the positive electrode side mandrel (122) with respect to the X-axis direction of the stacking table (120).

[0105] The above-mentioned negative electrode side mandrel (124) is connected to the cylinder rod of a pair of mandrel moving cylinders provided on the stacking table (120), and can be configured so that the pair of negative electrode side mandrels (124) move into the upper part of the stacking table (120) or move out from the upper part of the stacking table (120) according to the extension and retraction operation of the cylinder rod of the mandrel moving cylinder. At this time, a pair of mandrel lifting cylinders are mounted on the stacking table (120), and the mandrel moving cylinder is mounted on the cylinder rod of the pair of mandrel lifting cylinders, so that the force pressing the negative electrode (14) on the stacking table (120) from one side by the pair of negative electrode side mandrels (124) or pressing the negative electrode (14) from one side from above is released according to the extension and retraction operation of the cylinder rod of the mandrel lifting cylinder.

[0106] A separator (16) winding roll, on which a separator (16) is wound in a roll shape on the outer surface of the above separator supply frame (152), is rotatably coupled to the separator (16), so that the separator (16) is drawn downward through a separator (16) withdrawal hole penetrating the bottom surface of the separator supply frame (152).

[0107] Meanwhile, the separator (16) drawn down through the lower separator (16) drawing hole of the separator supply frame (152) passes through the separator direction change guide roll unit (160).

[0108] The above-mentioned separator (16) direction change guide roll includes a roll frame (162) supported by a main frame (112) and arranged horizontally, and a pair of separator stacking direction change rolls (164) rotatably coupled to the roll frame (162) and arranged horizontally, and the separator (16) passes between the pair of separator stacking direction change rolls (164).

[0109] The separator (16) that passes between a pair of separator stacking direction switching rolls (164) of the separator direction switching guide roll unit (160) is gripped and fixed on the stacking table (120) by a pair of positive electrode side mandrels (122) and a pair of negative electrode side mandrels (124) arranged in upper and lower positions on both the left and right sides of the stacking table (120). Whenever the stacking table (120) moves to the left or right along the X-axis direction of the main frame (112) relative to the separator direction switching guide roll unit (160), the direction of the separator (16) is changed by the separator direction switching guide roll unit (160) so that it covers the positive electrode plate and covers the negative electrode plate.

[0110] Meanwhile, the stacking table (120) is installed on the main frame (112) so as to be movable in the X-axis direction of the main frame (112) by means of a moving guide means such as an LM guide, and the main frame (112) is equipped with a stacking table (120) moving cylinder in which a cylinder rod is connected to the stacking table (120), so that the stacking table (120) moves left and right along the X-axis direction of the main frame (112) relative to the separator direction changing guide roll unit (160) according to the extension and retraction operation of the cylinder rod of the stacking table (120) moving cylinder, and the separator (16) can be changed direction so that it covers the positive electrode (12) from above and covers the negative electrode (14) from above by the separator direction changing guide roll unit (160).

[0111] At this time, in the present invention, a stacking table (120) moving drive motor is mounted on the main frame (112) such that the motor shaft is parallel in the X-axis direction, a stacking table (120) moving ball screw is coupled to the motor shaft of the stacking table (120) moving drive motor, a stacking table (120) moving ball screw nut is coupled to the outer surface of the stacking table (120) moving ball screw, and the stacking table (120) moving ball screw nut is connected to the stacking table (120), so that when the motor shaft of the stacking table (120) moving drive motor and the stacking table (120) moving ball screw rotate in forward and reverse directions, the stacking table (120) moving ball screw nut and the stacking table (120) may be configured to move in the X-axis direction from the main frame (112).

[0112] When the stacking table (120) moves back and forth in the X-axis direction on the main frame (112), the separator (16) is laid out on the stacking table (120) while changing direction, and the positive electrode (12) picked up by the second position positive electrode (12) pickup pad and the negative electrode (14) picked up by the second position negative electrode (14) pickup pad can be stacked one by one on the separator (16) laid out on the stacking table (120).

[0113] In the present invention, when a positive electrode (12) is stacked on the stacking table (120), the positive electrode side mandrel (122) contacts a part of the upper surface on one side of the positive electrode (12) to fix the positive electrode (12) on the stacking table (120), and when a separator (16) is supplied from the separator supply frame (152) to pass through the separator direction change guide roll unit (160) and connect to the stacking table (120), when the stacking table (120) moves in the X-axis direction to stack the separator (16) on the positive electrode (12), the stacking position of the separator (16) is switched by the separator direction change guide roll unit (160), and the separator (16) is caught on the positive electrode side mandrel (122) so that the separator (16) covers the positive electrode (12). In a state where a cathode electrode (14) is stacked on a separator (16) stacked on the positive electrode (12), the cathode electrode side mandrel (124) contacts a part of the upper surface on one side of the cathode electrode (14) to fix the cathode electrode (14) onto the stacking table (120), and while the separator (16) is supplied from the separator supply frame (152) to be connected to the stacking table (120), the stacking table (120) moves in the X-axis direction, and when the separator (16) is stacked on the cathode electrode (14) by moving in the opposite direction to the direction in which the separator (16) moved to cover the positive electrode (12), the stacking position of the separator (16) is switched by the separator direction change guide roll unit (160), and the separator (16) is on the cathode electrode side The separator (16) is stacked so that it covers the cathode electrode (14) by being caught on the mandrel (124), and the positive electrode side mandrel (122) fixes the positive electrode (12) on the stacking table (120) and stacks the separator (16) to cover the positive electrode (12).The above-mentioned negative electrode side mandrel (124) is fixed to the stacking table (120) as a negative electrode (14), and the process of stacking a separator (16) to cover the negative electrode (14) is repeated to form a secondary battery cell (10) in which a separator (16) is stacked between a plurality of positive electrodes (12) and negative electrodes (14).

[0114] In the present invention, the stacking process module is supported and installed on a main frame (112) so as to be placed on top of the stacking table (120), and is configured to form a secondary battery cell (10) by repeating the process of stacking on the stacking table (120) such that a separator (16) is interposed between the positive electrode (12) and the negative electrode (14) by the combined operation of the positive electrode supply module, the negative electrode supply module, the stacking process module, and the stacking table (120).

[0115] Accordingly, the present invention automates the process of forming a battery cell (10) for a secondary battery having a structure in which a separator (16) is stacked between multiple positive electrodes (12) and negative electrodes (14) by repeating the positive electrode (12) stacking operation, in which a positive electrode (12) is placed one by one on a separator (16) laid on a stacking table (120) by operating the first position positive electrode pickup pad (134) and the second position positive electrode pickup pad (136) as described above, and the negative electrode (14) stacking operation, in which a positive electrode (12) is placed one by one on a separator (16) laid on a stacking table (120) by operating the first position negative electrode pickup pad (144) and the second position negative electrode pickup pad (146), thereby automating the process of forming a battery cell (10) by stacking a separator (16) in a zigzag shape between the positive electrode (12) and the negative electrode (14). It has the effect of enabling smooth and precise execution through the process.

[0116] Meanwhile, the present invention further includes a withdrawal gripper (170) that grips and withdraws a battery cell (10) from the stacking table (120), a cutting unit (180) that cuts a separator (16) connected to the stacking table (120) from the battery cell (10) that has been withdrawn from the stacking table (120) by the withdrawal gripper (170), a cutting separator gripper (190) that grips and supports the separator (16) cut by the cutting unit (180) and is slidably supported on a main frame (112) so as to be movable toward the withdrawal gripper (170), and a battery cell rotation unit that rotates the battery cell (10) while the cutting separator gripper (190) is gripping the separator (16) connected to the battery cell (10) so that a part of the separator (16) wraps around the outer surface of the battery cell (10).

[0117] The above-described withdrawal gripper (170) comprises a withdrawal grip frame (172) that is reciprocated in the X-axis direction by a battery cell (10) withdrawal moving means on the main frame (112), a withdrawal grip cylinder (174) mounted on the withdrawal grip frame (172) and having an upper cylinder rod and a lower cylinder rod that extend and retract upward and downward, and an upper withdrawal grip block (175) and a lower withdrawal grip block (176) connected to the upper cylinder rod and the lower cylinder rod of the withdrawal grip cylinder (174) and positioned facing each other upward and downward.

[0118] At this time, the withdrawal grip frame (172) is connected to the cylinder rod of the withdrawal moving cylinder mounted on the main frame (112), and can be configured so that the withdrawal grip frame (172), the withdrawal grip cylinder (174), the upper withdrawal grip block (175), and the lower withdrawal grip block (176) reciprocate along the X-axis direction of the main frame (112) according to the extension and retraction operation of the cylinder rod of the withdrawal moving cylinder. At this time, in the present invention, any means of moving the withdrawal gripper (170) that causes the withdrawal grip frame (172), the withdrawal grip cylinder (174), the upper withdrawal grip block (175), and the lower withdrawal grip block (176) to reciprocate along the X-axis direction of the main frame (112), other than the withdrawal moving cylinder, may be employed.

[0119] According to the present invention, when the cylinder rod of the withdrawal moving cylinder is advanced while the stacking table (120) is moved in the X-axis direction so as to be closer to the withdrawal gripper (170) from the main frame (112), the withdrawal grip frame (172), the withdrawal grip cylinder (174), the upper withdrawal grip block (175), and the lower withdrawal grip block (176) advance along the X-axis direction of the main frame (112) toward the stacking table (120) where the battery cell (10) is located, and the upper withdrawal grip block (175) and the lower withdrawal grip block (176) are positioned above the upper surface and below the lower surface of the battery cell (10).

[0120] In this state, when the upper cylinder rod and lower cylinder rod of the withdrawal grip cylinder (174) are operated to be inserted, the upper withdrawal grip block (175) and the lower withdrawal grip block (176) each grip the upper and lower surfaces of the battery cell (10).

[0121] Next, when the cylinder rod of the above-mentioned withdrawal moving cylinder is retracted, the withdrawal grip frame (172), the withdrawal grip cylinder (174), the upper withdrawal grip block (175), and the lower withdrawal grip block (176) move outward along the X-axis direction of the main frame (112) toward the stacking table (120) where the battery cell (10) is located, thereby pulling the battery cell (10) outward from the stacking table (120). At this time, the separator (16) connected to the battery cell (10) is positioned between a pair of separator stacking direction changing rolls (164) of the separator direction changing guide roll unit (160) and simultaneously connected to the outer surface of the separator (16) winding roll in the separator supply frame (152). Thus, when the withdrawal grip frame (172), withdrawal grip cylinder (174), upper withdrawal grip block (175), and lower withdrawal grip block (176) move outward from the stacking table (120) where the battery cell (10) is located along the X-axis direction of the main frame (112) and pull the battery cell (10) outward from the stacking table (120), the separator (16) is pulled out along the battery cell (10) in a long, continuous state. That is, when the above-mentioned pull-out gripper (170) pulls the battery cell (10) out of the stacking table (120) while gripping it, the separator (16) is pulled out along with the battery cell (10) in a long, continuous state.

[0122] At this time, in the present invention, a battery cell (10) is formed by stacking multiple positive electrodes (12) and negative electrodes (14) with a separator (16) interposed between them on the stacking table (120), and then the stacking table (120) is moved in the X-axis direction so as to be closer to the extraction gripper (170) from the main frame (112), and the extraction gripper (170) is configured to grip and pull the battery cell (10) from the stacking table (120) to extract it.

[0123] Meanwhile, in the present invention, any means capable of moving the withdrawal gripper (170) in the X-axis direction of the main frame (112) for moving the battery cell (10) may be employed in addition to the withdrawal moving cylinder, provided that such means can move the withdrawal gripper (170) in the X-axis direction of the main frame (112).

[0124] The above cutting unit (180) functions to cut the separator (16) connected to the stacking table (120) from the battery cell (10) that the withdrawal gripper (170) has withdrawn from the stacking table (120).

[0125] In the present invention, the cutting unit (180) includes a cutting moving frame (182) mounted on the main frame (112) so as to be movable in the Y-axis direction (movable in the left-right width direction of the separator (16)), and a separator cutter (184) mounted on the cutting moving frame (182).

[0126] At this time, the separator cutter (184) may be configured as a laser cutter capable of cutting the separator (16) by a laser.

[0127] Meanwhile, the cutting moving frame (182) may be configured to reciprocate in the Y-axis direction of the main frame (112) by means of a cutting moving means mounted on the main frame (112). In the present invention, the cutting moving means may include a cutting drive motor mounted on the main frame (112) with a motor shaft positioned parallel to the Y-axis direction of the main frame (112), a cutting moving ball screw coupled to the motor shaft of the cutting drive motor and positioned parallel to the Y-axis direction of the main frame (112), and a cutting moving ball screw nut coupled to the outer surface of the cutting moving ball screw and connected to the cutting moving frame (182).

[0128] According to the present invention, when the extraction gripper (170) pulls the battery cell (10) out of the stacking table (120) while gripping it, and the separator (16) is pulled out in a long, continuous manner along with the battery cell (10), if the motor shaft of the cutting drive motor and the cutting moving ball screw are rotated in one direction (e.g., clockwise), the cutting moving ball screw nut and the cutting moving frame (182) move from one side of the separator (16) toward the other side. Since a laser is emitted from the separator cutter (184), the separator cutter (184) also moves from one side of the separator (16) toward the other side together with the cutting moving frame (182), and the separator (16) is cut by the laser.

[0129] At this time, in the present invention, the cutting moving means may be any means capable of moving the separator cutter (184) in the width direction of the separator (16), in addition to the cutting drive motor, the cutting moving ball screw, and the cutting moving ball screw nut.

[0130] The main parts of the present invention, the extraction gripper (170) and the cutting unit (180), have the effect of enabling the smooth execution of a preliminary step in an automated process to rotate and wrap the separator (16) around the outer surface of the battery cell (10) after the battery cell (10) is formed on the stacking table (120).

[0131] Meanwhile, when cutting the separator (16) by the separator cutter (184), a portion of the separator (16) is placed on the stacking table, and the separator (16) is pressed by a pair of positive electrode side mandrels (122) and a pair of negative electrode side mandrels (124) on the stacking table, thereby allowing the separator (16) to be cut smoothly and accurately by the separator cutter (184). In other words, the effect of cutting the separator (16) smoothly and accurately by the separator cutter (184) can be expected.

[0132] Additionally, the present invention further includes a cutting separator gripper (190) that grips and supports the separator (16) cut by the cutting unit (180) and is slidably supported on the main frame (112) so as to be movable toward the withdrawal gripper (170).

[0133] In the present invention, the separator (16) is cut by the withdrawal gripper (170) and the cutting unit (180), and the withdrawal gripper (170) and the battery cell (10) are moved together toward the battery cell rotation unit described later by the battery cell (10) withdrawal moving means. When moving the battery cell (10) toward the battery cell rotation unit, the end portion of the separator (16) that is extended and moved along with the battery cell (10) is configured to be gripped by the cutting separator gripper (190).

[0134] In the present invention, the cutting separator gripper (190) includes a lower cutting separator support panel (192) positioned between the stacking table (120) and the battery cell rotation unit, and an upper cutting separator grip panel (194) that is raised and lowered on the lower separator (16) support panel. At this time, the upper cutting separator grip panel (194) is vertically movably coupled to the upper cutting separator (16) grip support frame mounted on the main frame (112) via an LM guide, and a cutting separator (16) grip cylinder is mounted on the upper cutting separator (16) grip support frame, and the upper cutting separator grip panel (194) is coupled to the cylinder rod of the cutting separator (16) grip cylinder, so that when the separator (16) extending from the battery cell (10) enters the interior of the upper cutting separator (16) frame, the upper cutting separator grip panel (194) is floating above the lower cutting separator support panel (192), and when the movement of the pull-out gripper (170) and the battery cell (10) stops and the separator (16) extending from the battery cell (10) stops above the lower cutting separator support panel (192), the cutting separator (16) The cylinder rod of the grip cylinder descends so that the lower cutting membrane support panel (192) and the upper cutting membrane grip panel (194) can grip the end of the membrane (16) from the upper and lower surfaces.

[0135] The present invention further includes a battery cell rotation unit that rotates the battery cell (10) while the cutting separator gripper (190) is gripping the separator (16) connected to the battery cell (10) so that a part of the separator (16) wraps around the outer surface of the battery cell (10).

[0136] In the present invention, the battery cell rotation unit comprises a rotation lifting support frame (202), a first side moving frame (203), a first rotation base driving motor (204), a first rotation mandrel cylinder (205), a pair of first rotation upper mandrels (205UM), a pair of first rotation lower mandrels (205LM), a second side moving frame (206), a second rotation base driving motor (207), a second rotation mandrel cylinder (208), a pair of second rotation upper mandrels (208UM), and a pair of second rotation lower mandrels (208LM).

[0137] The above rotation lifting support frame (202) is connected to the main frame (112) so as to be able to move up and down via a lifting guide such as an LM guide.

[0138] At this time, a lifting support frame lifting device is mounted on the main frame (112), and the rotation lifting frame can be configured to be raised vertically from the main frame (112) by the operation of the lifting frame lifting device. In the present invention, the lifting support frame lifting device is mounted on the main frame (112) and is configured as a lifting support frame lifting cylinder in which a cylinder rod is arranged vertically, and the rotation lifting support frame (202) is connected to the cylinder rod of the lifting support frame lifting cylinder, so that the rotation lifting support frame (202) can be raised from the main frame (112) according to the withdrawal operation of the cylinder rod of the lifting support frame lifting cylinder. In the present invention, any device capable of raising the rotation lifting support frame (202) from the main frame (112) other than the lifting support frame lifting cylinder may be employed.

[0139] The first side moving frame (203) is coupled to the lifting support frame via a moving guide such as an LM guide and configured to be movable along the Y-axis direction of the main frame (112) relative to the lifting guide support frame.

[0140] The first rotation base drive motor (204) is mounted on the first side moving frame (203).

[0141] The first rotation mandrel cylinder (205) is mounted on a first side rotation frame that is rotatably mounted on the first side moving frame (203), and the first side rotation frame is connected to the motor shaft of a first rotation base drive motor (204) mounted on the first side moving frame (203) via a drive pulley, a driven pulley, and a belt, so that the first side rotation frame rotates and the first rotation mandrel cylinder (205) also rotates according to the rotation of the motor shaft of the first rotation base drive motor (204). The first side rotation frame and the first rotation mandrel cylinder (205) are configured to rotate with respect to the Y-axis direction of the main frame (112).

[0142] The first rotation mandrel cylinder (205) is configured so that the first upper rotation cylinder rod and the first lower rotation cylinder rod are pulled out at the upper and lower ends, respectively.

[0143] A pair of first rotation upper mandrels (205UM) are connected to the first upper rotation cylinder rod of the first rotation mandrel cylinder (205) via a connecting means such as a bracket.

[0144] A pair of first rotation lower mandrels (205LM) are connected to the first lower rotation cylinder rod of the first rotation mandrel cylinder (205) via a connecting means such as a bracket.

[0145] A pair of first rotation upper mandrels (205UM) and a pair of first rotation lower mandrels (205LM) are positioned facing each other.

[0146] The second side moving frame (206) is connected to the lifting support frame via a moving guide such as an LM guide and configured to be movable along the Y-axis direction of the main frame (112) relative to the lifting guide support frame.

[0147] The second rotation base drive motor (207) is mounted on the second side moving frame (206).

[0148] The second rotation mandrel cylinder (208) is mounted on a second side rotation frame that is rotatably mounted on the second side moving frame (206), and the second side rotation frame is connected to the motor shaft of a second rotation base drive motor (207) mounted on the second side moving frame (206) via a drive pulley, a driven pulley, and a belt, so that the second side rotation frame rotates and the second rotation mandrel cylinder (208) also rotates according to the rotation of the motor shaft of the second rotation base drive motor (207). The second side rotation frame and the second rotation mandrel cylinder (208) are configured to rotate with respect to the Y-axis direction of the main frame (112).

[0149] The second rotation mandrel cylinder (208) is configured so that the second upper rotation cylinder rod and the second lower rotation cylinder rod are pulled out at the upper and lower ends, respectively.

[0150] A pair of second rotation upper mandrels (208UM) are connected to the second upper rotation cylinder rod of the second rotation mandrel cylinder (208) via a connecting means such as a bracket.

[0151] A pair of second rotation lower mandrels (208LM) are connected to the second lower rotation cylinder rod of the second rotation mandrel cylinder (208) via a connecting means such as a bracket.

[0152] A pair of second rotation upper mandrels (208UM) and a pair of second rotation lower mandrels (208LM) are positioned facing each other.

[0153] Meanwhile, in the present invention, the first side moving frame (203) and the second side moving frame (206) may be configured to move in the width direction of the main frame (112) by means of a width direction moving means (a moving means that moves along the width direction of the separator (16)) mounted on a rotation lifting frame. At this time, the width direction moving means is configured as a width direction moving cylinder mounted on the rotation lifting frame and having cylinder rods that are pulled out at both ends. When a pair of cylinder rods of the width direction moving cylinder are pulled out simultaneously, the first side moving frame (203) and the second side moving frame (206) may be driven to open simultaneously, and when a pair of cylinder rods of the width direction moving cylinder are retracted simultaneously, the first side moving frame (203) and the second side moving frame (206) may be driven to close the distance between them simultaneously. In addition to the width-direction movement cylinder, any device that causes the first side movement frame (203) and the second side movement frame (206) to open or close simultaneously can be employed as the width-direction movement means.

[0154] The separator (16) winding process, in which the battery cell (10) is rotated by the battery cell rotation unit of the above configuration to wrap the separator (16) around the outer surface of the battery cell (10), is described as follows.

[0155] The above-mentioned pull-out grip frame (172), pull-out grip cylinder (174), upper pull-out grip block (175), and lower pull-out grip block (176) move outward along the X-axis direction of the main frame (112) toward the stacking table (120) where the battery cell (10) is located, pulling the battery cell (10) outward from the stacking table (120) so that the separator (16) is attached to the battery cell (10) in a long, continuous state. In other words, the pull-out gripper (170) moves outward along the X-axis direction of the main frame (112) toward the stacking table (120) where the battery cell (10) is located, pulling the battery cell (10) outward from the stacking table (120) so that the separator (16) is attached to the battery cell (10) in a long, continuous state. Then the movement of the pull-out gripper (170) stops, so that the separator (16) attached to the battery cell (10) in a long, continuous state. When the separator (16) stops on the lower cutting separator support panel (192), the cylinder rod of the cutting separator (16) grip cylinder descends so that the lower cutting separator support panel (192) and the upper cutting separator grip panel (194) grip the end of the separator (16) from the upper and lower surfaces.

[0156] Of course, when the battery cell (10) with the separator (16) extending long is pulled by the extraction gripper (170) and enters between the first side moving frame (203) and the second side moving frame (206), the pair of cylinder rods of the width-direction moving cylinder are simultaneously pulled out so that the first side moving frame (203) and the second side moving frame (206) are simultaneously spread apart, and the first rotation mandrel cylinder (205), a pair of first rotation upper mandrels (205UM), a pair of first rotation lower mandrels (205LM), the second rotation mandrel cylinder (208), a pair of second rotation upper mandrels (208UM), and a pair of second rotation lower mandrels (208LM) are spread apart from each other in the horizontal direction.

[0157] Next, with the separator (16) attached to the battery cell (10) in a long, continuous state, the lower cutting separator support panel (192) and the upper cutting separator grip panel (194) grip the end portion of the separator (16) from the upper and lower surfaces, and when the battery cell (10) is positioned horizontally in a location where a pair of first rotation upper mandrels (205UM), a pair of first rotation lower mandrels (205LM), a pair of second rotation upper mandrels (208UM), and a pair of second rotation lower mandrels (208LM) can grip it, and when the first side moving frame (203), the second side moving frame (206), the first rotation mandrel cylinder (205), and the second rotation mandrel cylinder (208) narrow so that the distance between them becomes closer simultaneously, then a pair of first rotation upper mandrels (205UM) and a pair of first rotation The lower mandrel (205LM), a pair of second rotation upper mandrels (208UM), and a pair of second rotation lower mandrels (208LM) are brought into a position where they can grip the battery cell (10) from the top and bottom.

[0158] In this state, the first upper rotation cylinder rod and the first lower rotation cylinder rod of the first rotation mandrel cylinder (205) are operated to move into the interior of the first rotation mandrel cylinder (205) so that they come closer to each other, and a pair of first rotation upper mandrels (205UM) and a pair of first rotation lower mandrels (205LM) hold the battery cell (10) from above and below, and the second upper rotation cylinder rod and the second lower rotation cylinder rod of the second rotation mandrel cylinder (208) are operated to move into the interior of the second rotation mandrel cylinder (208) so that they come closer to each other, and a pair of second rotation upper mandrels (208UM) and a pair of second rotation lower mandrels (208LM) hold the battery cell (10) from above and below.

[0159] That is, the battery cell (10), in which the separator (16) is extended, is gripped at four places—front, back, left, and right—by a pair of first rotation upper mandrels (205UM), a pair of first rotation lower mandrels (205LM), a pair of second rotation upper mandrels (208UM), and a pair of second rotation lower mandrels (208LM).

[0160] At this time, the withdrawal gripper (170) that has withdrawn the battery cell (10) releases the state of gripping the battery cell (10) and then switches to a state where it moves outward from the area where the battery cell (10) is located.

[0161] Next, the rotation lifting support frame (202) descends from the main frame (112), and the first side moving frame (203), the first rotation base drive motor (204), the first rotation mandrel cylinder (205), a pair of first rotation upper mandrels (205UM), a pair of first rotation lower mandrels (205LM), the second side moving frame (206), the second rotation base drive motor (207), the second rotation mandrel cylinder (208), a pair of second rotation upper mandrels (208UM), and a pair of second rotation lower mandrels (208LM) also descend together, and simultaneously, the first side rotation frame rotates according to the rotation of the motor shaft of the first rotation base drive motor (204), and the first rotation mandrel cylinder (205) also rotates, so that a pair of first rotation upper mandrels (205UM) and a pair of The first rotation lower mandrel (205LM) rotates, and the second side rotation frame rotates according to the rotation of the motor shaft of the second rotation base drive motor (207), and the second rotation mandrel cylinder (208) also rotates, so that a pair of second rotation upper mandrels (208UM) and a pair of second rotation lower mandrels (208LM) rotate, causing the battery cell (10) to rotate at a 180-degree angle, and when the battery cell (10) rotates once at a 180-degree angle in this way, a part of the separator (16) that was extended on one side of the battery cell (10) covers it.

[0162] At this time, the cutting separator (16) grip support frame, on which the cutting separator gripper (190) is supported, that is, the cutting separator (16) grip support frame equipped with the cutting separator (16) grip cylinder, the lower cutting separator support panel (192), and the upper cutting separator grip panel (194), is connected so as to be slidable in the X-axis direction of the main frame (112) via a moving guide such as an LM guide, so that whenever the battery cell (10) rotates once at a 180-degree angle as described above, the cutting separator (16) support frame and the cutting separator gripper (190) move closer to the battery cell (10) each time a process is performed in which a part of the separator (16) that was extended covers one side of the battery cell (10). Whenever the battery cell (10) rotates once at a 180-degree angle, the cutting separator (16) support frame and the cutting separator gripper (190) must move so that they gradually move closer to the battery cell (10) so that when the battery cell (10) rotates once at a 180-degree angle, the process of covering one side of the battery cell (10) with a part of the separator (16) that has been stretched out can be performed.

[0163] Meanwhile, as described above, the battery cell (10) is rotated once at a 180-degree angle so that a portion of the separator (16) covers one side of the battery cell (10). Then, the withdrawal gripper (170), which has withdrawn the battery cell (10), enters the area of ​​the battery cell (10) that is positioned horizontally, and the upper withdrawal grip block (175) and the lower withdrawal grip block (176) grip the battery cell (10) on the upper and lower surfaces, respectively. Then, the separator (16) covering one side of the battery cell (10) adheres more firmly to one side of the battery cell (10).

[0164] Next, the withdrawal gripper (170) releases the state of gripping the battery cell (10) and then transitions to a state where it moves outward from the area where the battery cell (10) is located.

[0165] Subsequently, as described above, the rotation lifting support frame (202) descends from the main frame (112), and the first side moving frame (203), the first rotation base drive motor (204), the first rotation mandrel cylinder (205), a pair of first rotation upper mandrels (205UM), a pair of first rotation lower mandrels (205LM), the second side moving frame (206), the second rotation base drive motor (207), the second rotation mandrel cylinder (208), a pair of second rotation upper mandrels (208UM), and a pair of second rotation lower mandrels (208LM) also descend together, and simultaneously, the first side rotation frame rotates according to the rotation of the motor shaft of the first rotation base drive motor (204), and the first rotation mandrel cylinder (205) also rotates to one with the pair of first rotation upper mandrels (205UM). A pair of first rotation lower mandrels (205LM) rotate, and according to the rotation of the motor shaft of the second rotation base drive motor (207), the second side rotation frame rotates, and the second rotation mandrel cylinder (208) also rotates, so that a pair of second rotation upper mandrels (208UM) and a pair of second rotation lower mandrels (208LM) rotate, causing the battery cell (10) to rotate once again at a 180-degree angle, and when the battery cell (10) rotates once again at a 180-degree angle in this way, a part of the separator (16) that was extended covers the other side of the battery cell (10).

[0166] At this time, as described above, the cutting separator (16) grip support frame, which supports the cutting separator gripper (190), that is, the cutting separator (16) grip support frame equipped with the cutting separator (16) grip cylinder, the lower cutting separator support panel (192), and the upper cutting separator grip panel (194), is connected so as to be slidable in the X-axis direction of the main frame (112) via a moving guide such as an LM guide, so that when the battery cell (10) rotates once again at a 180-degree angle as described above, the cutting separator (16) support frame and the cutting separator gripper (190) move to gradually move closer to the battery cell (10) whenever a process is performed in which a part of the separator (16) that was extended covers the other side of the battery cell (10).

[0167] Next, as described above, the battery cell (10) is rotated once again at a 180-degree angle so that a portion of the separator (16) covers the other side of the battery cell (10). Then, the withdrawal gripper (170), which has withdrawn the battery cell (10), enters the area of ​​the battery cell (10) that is positioned horizontally again, and the upper withdrawal grip block (175) and the lower withdrawal grip block (176) grip the battery cell (10) on the upper and lower surfaces, respectively. Then, the separator (16) covering the other side of the battery cell (10) adheres more firmly to one side of the battery cell (10).

[0168] In the present invention, the above-described process is repeated several times (e.g., 3 to 5 times) by intermittently rotating the battery cell (10) (intermittently rotating the battery cell (10) at a 180-degree angle) to further wrap the outer surface of the battery cell (10) with a separator (16).

[0169] Accordingly, the present invention has the effect of enabling the process of wrapping the outer surface of a battery cell (10) with a separator (16) to be performed smoothly and precisely as an automated process, and has the effect of ensuring the high quality of the battery cell (10) (i.e., a battery in which a plurality of positive electrodes (12), negative electrodes (14), and separators (16) are stacked).

[0170] In addition, the present invention further includes a separator finishing pusher unit that presses the remaining part of the separator (16) toward the battery cell (10) after the battery cell (10) has been rotated by a battery cell rotation unit so that a part of the separator (16) blocks the outer surface of the battery cell (10).

[0171] In the present invention, the membrane finishing pusher unit is configured such that a push-down driving cylinder is mounted on a main frame (112), and a membrane push-contact panel (212) is connected to the cylinder rod of the push-down driving cylinder.

[0172] According to the present invention, by rotating the battery cell (10) by the battery cell rotation unit so that a part of the separator (16) blocks the outer surface of the battery cell (10), and then by rotating the battery cell (10) by the battery cell rotation unit to convert the battery cell (10) into a vertically upright state, and then lowering the cylinder rod of the push lowering drive cylinder to lower the separator push contact panel (212), the separator push contact panel (212) presses the part of the separator (16) remaining as a finishing on one side of the battery cell (10) toward the battery cell (10) so that it is attached to one side of the battery cell (10), thereby allowing the effect of neatly attaching the separator (16) to one side of the battery cell (10) to be expected.

[0173] Meanwhile, the separator push-contact panel (212) presses a portion of the separator (16) remaining on one side of the battery cell (10) toward the battery cell (10) to make it adhere to one side of the battery cell (10), and then the battery cell (10) is finally rotated 180 degrees by the battery cell rotation unit to position the battery cell (10) in a horizontal direction, and then the extraction gripper (170) re-enters the battery cell (10) area, and the upper extraction grip block (175) and lower extraction grip block (176) of the extraction gripper (170) grip and press the battery cell (10) from the upper and lower surfaces, respectively, thereby finishing by more securely adhering the separator (16) to both sides of the battery cell (10), and then the upper extraction grip block (175) and lower extraction grip block (176) of the extraction gripper (170) are spread apart again to extract from the battery cell (10) area. The gripper (170) can be made to come out to the outside.

[0174] Meanwhile, the positive electrode (12) and negative electrode (14) forming the electrode cell (10) are made of lithium metal, the first position positive pickup pad (134) and the first position negative pickup pad (144), which are primary P&P pads, are vacuum suction pads, the second position positive pickup pad (136) and the second position negative pickup pad (146), which are secondary P&P pads, are made of Al hard and PP materials, and the positive electrode side mandrel (122) and negative electrode side mandrel (124), which are in contact with the positive electrode (12) and negative electrode (14) made of lithium metal material, are formed by applying a silane coating.

[0175] In other words, in the present invention, the first position positive pickup pad (134) and the first position negative pickup pad (144), which are the primary P&P pads, are vacuum adsorption pads, and the second position positive pickup pad (136) and the second position negative pickup pad (146), which are the secondary P&P pads, are made of Al hard and PP materials. The first position positive pickup pad (134) and the first position negative pickup pad (144), which are the primary P&P pads, are vacuum adsorption pads, and the second position positive pickup pad (136) and the second position negative pickup pad (146), which are the secondary P&P pads, may use various other materials such as PP, PE, PVC, PET, and polymers.

[0176] In this way, the first position positive pickup pad (134) and the first position negative pickup pad (144) are vacuum suction pads, and the second position positive pickup pad (136) and the second position negative pickup pad (146), which are secondary P&P pads, are made of Al hard and PP materials, thereby resolving the problem of the active material of the electrode (10) adhering to the first position positive pickup pad (134) and the first position negative pickup pad (144), causing defects in the electrode (10) and difficulty in operating the equipment.

[0177] In addition, in the present invention, the positive electrode side mandrel (122) and the negative electrode side mandrel (124), which are stacking table mandrels, can be coated with silane (coating, hardening, plating, sputtering) so that the problem of the material being sticky and soft when using the electrode (10), which is also made of lithium metal, can be resolved.

[0178] In the present invention, considering that when the material of the electrode (10) is used as lithium metal for the stacking operation, the equipment operation may be difficult due to the problem of the material being sticky and soft, all parts that come into contact with the electrode (10) can be implemented with a silane coating.

[0179]

[0180] Specific embodiments of the present invention have been described above. However, those skilled in the art will understand that the spirit and scope of the present invention are not limited to these specific embodiments, and that various modifications and variations are possible within the scope of not altering the essence of the invention.

[0181] Accordingly, the embodiments described above are provided to fully inform those skilled in the art of the scope of the invention and should be understood as illustrative in all respects and not restrictive, and the invention is defined only by the scope of the claims.

Claims

1. A stacking table (120) and, A positive electrode supply module for stacking positive electrodes (12) on the stacking table (120), and A stacking process module for stacking a separator (16) on the anode electrode (12) while the anode electrode (12) is placed on the stacking table (120) by the anode electrode supply module, and An electrode stacking device for a secondary battery, characterized by comprising a negative electrode supply module that stacks a negative electrode (14) on a separator (16) while the separator (16) is stacked on the positive electrode (12) by the stacking process module.

2. In Paragraph 1, The above positive electrode supply module is, A first position positive electrode pickup pad (134) for picking up positive electrodes (12) stacked in a positive electrode feeding magazine (132) one by one, and A positive electrode transfer table (135) disposed between the positive electrode feeding magazine (132) and the stacking table (120), and It includes a second position positive pickup pad (136) that picks up the positive electrode (12) that has been picked up by the first position positive pickup pad (134) and placed on the positive electrode transfer table (135), and stacks the positive electrodes (12) one by one onto the stacking table (120). The above cathode electrode supply module is, A first position cathode pickup pad (144) for picking up cathode electrodes (14) stacked in a cathode electrode feeding magazine (142) one by one, and A cathode electrode transfer table (145) disposed between the cathode electrode feeding magazine (142) and the stacking table (120), and The electrode stacking equipment for a secondary battery is characterized by including a second position negative electrode pickup pad (146) that picks up a negative electrode (14) picked up by the first position negative electrode pickup pad (144) and places it on the negative electrode transfer table (145), and stacks the negative electrodes (14) one by one onto the stacking table (120).

3. In Paragraph 2, The first position positive pickup pad (134) and the second position positive pickup pad (136) are mounted on a positive pad moving frame (137), and The above positive pad moving frame (137) is reciprocated in the Y-axis direction so that the first position positive pickup pad (134) and the second position positive pickup pad (136) are reciprocated in the Y-axis direction, and The first position negative pickup pad (144) and the second position negative pickup pad (146) are mounted on a negative pad moving frame (147), and The above-mentioned negative pad moving frame (147) is reciprocated in the Y-axis direction so that the first position negative pickup pad (144) and the second position negative pickup pad (146) are reciprocated in the Y-axis direction, and The stacking table (120) is configured to move back and forth in the X-axis direction and be positioned to alternately face the positive electrode transfer table (135) and the negative electrode transfer table (145) in the Y-axis direction, and The stacking process module is supported and installed on the main frame (112) so as to be placed on the stacking table (120), and A secondary battery electrode stacking device characterized by being configured to form a secondary battery cell (10) by repeating a stacking process on the stacking table (120) such that a separator (16) is interposed between the positive electrode (12) and the negative electrode (14) through the combined operation of the positive electrode supply module, the negative electrode supply module, the stacking process module, and the stacking table (120).

4. In Paragraph 3, The above stacking process module is, A separator supply frame (152) positioned on the upper side of the stacking table (120), and A positive electrode side mandrel (122) entering toward the stacking table (120), and A negative electrode side mandrel (124) entering toward the stacking table (120), and It includes a membrane direction change guide roll unit (160) disposed between the stacking table (120) and the membrane supply frame (152), and With one positive electrode (12) stacked on the stacking table (120), the positive electrode side mandrel (122) contacts a part of the upper surface on one side of the positive electrode (12) to fix the positive electrode (12) on the stacking table (120), and In a state where the separator (16) is supplied from the separator supply frame (152) to pass through the separator direction change guide roll unit (160) and connect to the stacking table (120), when the stacking table (120) moves in the X-axis direction to stack the separator (16) on the positive electrode (12), the stacking position of the separator (16) is changed by the separator direction change guide roll unit (160), and the separator (16) is caught on the positive electrode side mandrel (122) and stacked so that the separator (16) covers the positive electrode (12). With one negative electrode (14) stacked on a separator (16) stacked on the positive electrode (12), the negative electrode side mandrel (124) contacts a part of the upper surface on one side of the negative electrode (14) to fix the negative electrode (14) on the stacking table (120). In a state where the separator (16) is supplied from the separator supply frame (152) to the stacking table (120), the stacking table (120) moves in the X-axis direction, and when the separator (16) is stacked on the cathode electrode (14) by moving in the opposite direction to the direction of movement so that the separator (16) covers the positive electrode (12), the stacking position of the separator (16) is switched by the separator direction change guide roll unit (160), and the separator (16) is stacked so that it covers the cathode electrode (14) by being caught on the cathode electrode side mandrel (124). A secondary battery electrode stacking device characterized by being configured to form a secondary battery cell (10) in which a separator (16) is stacked between a plurality of positive electrodes (12) and negative electrodes (14) by repeating the process in which the positive electrode side mandrel (122) fixes the positive electrode (12) on the stacking table (120) and stacks the separator (16) to cover the positive electrode (12), and the negative electrode side mandrel (124) fixes the negative electrode (14) on the stacking table (120) and stacks the separator (16) to cover the negative electrode (14).

5. In Paragraph 4, A withdrawal gripper (170) that grips and withdraws a battery cell (10) from the stacking table (120), and A cutting unit (180) that cuts the separator (16) connected to the stacking table (120) from the battery cell (10) that the above-mentioned withdrawal gripper (170) withdraws from the stacking table (120), and A cutting separator gripper (190) that grips and supports the separator (16) cut by the cutting unit (180) and is slidably supported on the main frame (112) so as to be movable toward the extraction gripper (170), and The battery cell rotation unit further includes, while the cutting separator gripper (190) grips the separator (16) connected to the battery cell (10), the battery cell (10) is rotated so that a part of the separator (16) covers the outer surface of the battery cell (10). The materials of the positive electrode (12) and the negative electrode (14) forming the above electrode cell (10) are composed of lithium metal, and The first position positive pickup pad (134) and the first position negative pickup pad (144), which are the first P&P pads, are vacuum suction pads, and the second position positive pickup pad (136) and the second position negative pickup pad (146), which are the second P&P pads, are made of Al hard and PP materials, and A secondary battery electrode stacking device characterized in that the positive electrode side mandrel (122) and the negative electrode side mandrel (124), which are in contact with the positive electrode (12) and the negative electrode (14) made of lithium metal material, are formed by applying a silane coating.

6. In Paragraph 5, A secondary battery electrode stacking device characterized by further including a separator finishing pusher unit that presses a portion of the remaining separator (16) toward the battery cell (10) after the battery cell (10) has been rotated by the battery cell rotation unit so that a portion of the separator (16) blocks the outer surface of the battery cell (10).

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