Secondary battery cell stack manufacturing device

Abstract

A secondary battery cell stack manufacturing device is a device for manufacturing a cell stack in which a first electrode and a second electrode are alternately arranged with a separator in between, comprising: a stack table; a first magazine and a first alignment table arranged in a row along a first work line; a first pick-and-place unit for moving the first electrode of the first magazine to the first alignment table; a second magazine and a second alignment table arranged in a row along a second work line parallel to the first work line; a gripper for transporting the second electrode above the second alignment table to the stack table; and a discharge unit arranged to move to the upper side of the stack table to discharge the cell stack, wherein the second alignment table is arranged to move to an adsorption area and a gripping area, the adsorption area is an area where the second alignment table adsorbs the second electrode moved from the second magazine, and the gripping area is an area where the gripper grips the second electrode.

Description

Technology Field

[0001] The present invention relates to a cell stack manufacturing apparatus for a secondary battery. Background Technology

[0002] A secondary battery is a device that converts electrical energy into chemical energy for storage and generates electricity when needed; both charging and discharging occur at a single electrode, and the oxidation electrode (anode, negative electrode) and reduction electrode (cathode, positive electrode) are distinguished based on the discharge reaction.

[0003] A secondary battery includes a positive plate and a negative plate coated with an active material on a current collector, a separator separating the positive plate and the negative plate, an electrolyte that transfers ions through the separator, a case housing the positive plate, the separator, and the negative plate, and lead tabs connected to the positive plate and the negative plate and extended outward.

[0004] Secondary batteries can be classified into cylindrical, prismatic, and pouch types depending on their shape.

[0005] Pouch-type secondary batteries are widely used in the secondary battery industry because they include a flexible case such as a pouch, allowing for a relatively free shape, and have a relatively easy manufacturing process and low manufacturing costs.

[0006] An example of manufacturing equipment for producing such a secondary battery may be a cell stack manufacturing device for a secondary battery disclosed in Korean Registered Patent Publication 10-1956758 B1 (published March 11, 2019). The cell stack manufacturing device for a secondary battery comprises a first magazine and a second magazine for loading a positive plate and a negative plate, respectively; a first electrode transfer and a second electrode transfer for transporting the positive plate and negative plate loaded in the first magazine and the second magazine, respectively; a first alignment table and a second alignment table for photographing the positive plate and negative plate transmitted by the first electrode transfer and the second electrode transfer and aligning their positions based on the captured image information; and a tilting table that stacks the positive plate and negative plate on the first alignment table and the second alignment table by repeatedly rotating them in both directions at a certain angle around an axis perpendicular to the ground, thereby alternately transferring the positive plate and the negative plate to a separator on the tilting table. It includes an anode transfer unit and a cathode transfer unit that sequentially stack cathode plates. Prior art literature

[0007] Republic of Korea Registered Patent Publication 10-1956758 B1 (Published March 11, 2019) The problem to be solved

[0008] A secondary battery cell stack manufacturing device according to the prior art has a problem in that the ejection time increases because the alignment table must be raised to avoid interference between the magazine and the alignment table when the ejection unit for ejecting the cell stack enters.

[0009] The present embodiment provides a cell stack manufacturing apparatus for a secondary battery that can minimize the manufacturing time of multiple cell stacks by minimizing the travel distance of the discharge unit. means of solving the problem

[0010] A secondary battery cell stack manufacturing apparatus according to the present embodiment is an apparatus for manufacturing a cell stack in which a first electrode and a second electrode are alternately arranged with a separator in between, and comprises: a stack table; a first magazine and a first alignment table arranged in a row along a first work line; a first pick-and-place unit for moving the first electrode of the first magazine to the first alignment table; a second magazine and a second alignment table arranged in a row along a second work line parallel to the first work line; a gripper for transporting the second electrode on the upper side of the second alignment table to the stack table; and a discharge unit arranged to move to the upper side of the stack table to discharge the cell stack.

[0011] The second alignment table may be positioned to move to an adsorption area and a gripping area, the adsorption area may be an area where the second alignment table adsorbs the second electrode moved from the second magazine, and the gripping area may be an area where a gripper grips the second electrode.

[0012] The secondary battery cell stack manufacturing device may further include an alignment table transfer unit that moves the second alignment table to an adsorption area or a gripping area.

[0013] The stack table can be positioned to move along the first work line.

[0014] The stack table can be positioned to move to the first electrode stack area and the second electrode stack area.

[0015] The first electrode stack area may be closer to the first alignment table than the second electrode stack area, and may be an area that receives the first electrode from the first alignment table.

[0016] The second electrode stack area may be an area located in front of or behind the gripping area.

[0017] The gripper can detach the second electrode to the stack table once the stack table has finished moving to the second electrode stack area.

[0018] The secondary battery cell stack manufacturing device may further include a stack table transfer unit.

[0019] The stack table transfer unit can move the stack table to the first electrode stack area or the second electrode stack area.

[0020] The first pick and place unit can transport the first electrode to the stack table when the stack table is completed to the first electrode stack area.

[0021] The secondary battery cell stack manufacturing device may further include a second pick-and-place unit.

[0022] The second pick and place unit can move the second electrode of the second magazine to the second alignment table once the second alignment table has finished moving to the adsorption area.

[0023] The discharge unit can be positioned to move along the first work line.

[0024] The discharge unit can be positioned to advance to the second electrode stack area and retract to a discharge area spaced apart from the second electrode stack area. Effects of the invention

[0025] According to the present embodiment, the discharge unit can minimize the travel distance and the manufacturing time for manufacturing multiple cell stacks can be minimized.

[0026] In addition, the overall length of the secondary battery cell stack manufacturing device can be minimized. Brief explanation of the drawing

[0027] FIG. 1 is a plan view showing a cell stack of a secondary battery according to the present embodiment, FIG. 2 is a cross-sectional view of a cell stack of a secondary battery according to the present embodiment, FIG. 3 is a plan view of a cell stack manufacturing apparatus for a secondary battery according to the present embodiment, FIG. 4 is a front view of a cell stack manufacturing apparatus for a secondary battery according to the present embodiment, FIG. 5 is a rear view of a cell stack manufacturing apparatus for a secondary battery according to the present embodiment, FIG. 6 is a plan view of a comparative example compared with a cell stack manufacturing apparatus for a secondary battery according to the present embodiment, FIG. 7 is a front view of a comparative example compared with a cell stack manufacturing apparatus for a secondary battery according to the present embodiment, FIG. 8 is a diagram showing the gripper illustrated in FIG. 1 when it is moved to the upper side of the second alignment table. FIG. 9 is a diagram showing the second alignment table shown in FIG. 8 when it is moved close to the second magazine. FIG. 10 is a diagram showing the second alignment table illustrated in FIG. 9 adsorbing the second electrode, FIG. 11 is a diagram showing the second alignment table shown in FIG. 10 moving to the lower side of the gripper and the gripper adsorbing the second electrode. FIG. 12 is a diagram showing the gripper illustrated in FIG. 11 moving to the upper side of the stack table and detaching the second electrode to the stack table. FIG. 13 is a front view showing the gripper illustrated in FIG. 12, a stack table, and an ejection unit. FIG. 14 is a diagram showing the gripper illustrated in FIG. 12 moving to the upper side of the second alignment table and the discharge unit advancing to the cell stack. FIG. 15 is a front view showing the stack table and discharge unit illustrated in FIG. 14, FIG. 16 is a diagram showing the gripper illustrated in FIG. 14 when it is moved to the upper side of the second alignment table and the discharge unit is retracted. FIG. 17 is a front view showing the stack table and discharge unit illustrated in FIG. 16, Figure 18 is a diagram showing the cutting of the separator membrane illustrated in Figure 17. Specific details for implementing the invention

[0028] Specific embodiments of the present invention will be described in detail below with reference to the drawings.

[0029] FIG. 1 is a plan view showing a cell stack of a secondary battery according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a cell stack of a secondary battery according to an embodiment of the present invention.

[0030] The cell stack (1) illustrated in FIGS. 1 and 2 may have a positive electrode (2) and a negative electrode (3) separated by a separator (4), and the positive electrode (2) and the negative electrode (3) may be arranged alternately with the separator (4) in between.

[0031] A positive electrode (2) may have a positive tab (2a) attached, and a negative electrode (3) may have a negative tab (3a) attached.

[0032] The positive electrode (2) may be the first electrode, and the negative electrode (3) may be the second electrode.

[0033] The separator (4) can be positioned to surround the positive electrode (2) and the negative electrode (3), and can be positioned not to surround the positive tab (2a) and the negative tab (3a).

[0034] The separator (4) can be divided into an inner separator (5) and an outer separator (6) depending on its position.

[0035] The inner separator (5) can be defined as a part located inside the outer separator (6) among the separators (4), and when the cell stack (1) is manufactured by the secondary battery stacking equipment (10, see FIG. 4), it may be in a shape that is folded in a roughly zigzag shape.

[0036] The outer separator (6) may be a portion extending from one end of the inner separator (5) and may be defined as a portion that encloses the inner separator (5), a plurality of positive electrodes (2), and a plurality of negative electrodes (3).

[0037] The cell stack (1) can be assembled by a secondary battery stacking device (10) as shown in FIGS. 3 to 11.

[0038] After each of the separator (4), positive electrode (2), and negative electrode (3) is completed, they can be fed into a secondary battery stacking equipment (10), and the secondary battery stacking equipment (10) can stack the positive electrode (2), the separator (4), and the negative electrode (3). The secondary battery stacking equipment (10) can manufacture a cell stack (1) in which the positive electrode (2) and the negative electrode (3) are alternately arranged with the separator (4) in between.

[0039] Hereinafter, a secondary battery cell stack manufacturing device for assembling a cell stack (1) will be described.

[0040] The secondary battery cell stack manufacturing device may be a Z-Stacking device that supplies a separator (4) so ​​that the separator (4) is folded in a zigzag shape, and alternately arranges a positive electrode (2) and a negative electrode (3) with the separator (4) in between.

[0041] Hereinafter, for convenience of explanation, the positive electrode (2) is referred to as the first electrode (2) and the negative electrode (3) is referred to as the second electrode (3), and it goes without saying that the opposite case is also applicable.

[0042] FIG. 3 is a plan view of a cell stack manufacturing device for a secondary battery according to the present embodiment, FIG. 4 is a front view of a cell stack manufacturing device for a secondary battery according to the present embodiment, and FIG. 5 is a rear view of a cell stack manufacturing device for a secondary battery according to the present embodiment.

[0043] A secondary battery cell stack manufacturing device can manufacture a cell stack (1) in which a first electrode (2) and a second electrode (3) are alternately arranged with a separator (4) in between.

[0044] A secondary battery cell stack manufacturing device may include a stack table (10) in which a first electrode (2) and a second electrode (3) are alternately stacked with a separator (4) in between.

[0045] A secondary battery cell stack manufacturing device may include a first magazine (20) and a first alignment table (30) for supplying a first electrode (2) to a stack table (10), and a second magazine (40) and a second alignment table (50) for supplying a second electrode (3) to a stack table (10).

[0046] A secondary battery cell stack manufacturing device may include two rows of work lines (W1)(W2), and the two rows of work lines (W1)(W2) may be parallel to each other.

[0047] The first magazine (20) and the first alignment table (30) can be arranged in a line along the first work line (W1).

[0048] The second magazine (40) and the second alignment table (50) can be arranged in a line along the second work line (W2) parallel to the first work line (W1).

[0049] The secondary battery cell stack manufacturing device may further include a first pick-and-place unit (60, see FIG. 2) and a second pick-and-place unit (70, see FIG. 3).

[0050] The first pick and place unit (60) can move the first electrode (2) of the first magazine (20) to the first alignment table (20).

[0051] The second pick and place unit (70) can move the second electrode (3) of the second magazine (40) to the second alignment table (50).

[0052] The first magazine (20) may have a space formed in which a plurality of first electrodes (2) are stacked, and the plurality of first electrodes (2) accommodated in the space of the first magazine (2) may be moved sequentially to the first alignment table (30) with a time difference by the first pick and place unit (60).

[0053] A first alignment mechanism, such as a motor or cylinder, capable of aligning the position or angle of the first electrode (2) moved from the first magazine (20) may be arranged in the first alignment table (30), and the first alignment mechanism can align the position or angle of the first electrode (2) moved from the first magazine (20).

[0054] A first adsorption mechanism, such as a suction tube capable of adsorbing a first electrode (2) moved from a first magazine (20), may be disposed on the first alignment table (30), and the first adsorption mechanism may adsorb the first electrode (2) to the first alignment table (30).

[0055] The second magazine (40) may have a space formed in which a plurality of second electrodes (3) are stacked, and the plurality of second electrodes (3) accommodated in the space of the second magazine (40) may be moved sequentially to the second alignment table (50) with a time difference by the second pick and place unit (70).

[0056] A second alignment mechanism, such as a motor or cylinder, capable of aligning the position or angle of the second electrode (3) moved from the second magazine (40) may be arranged in the second alignment table (50), and the second alignment mechanism can align the position or angle of the second electrode (3) moved from the second magazine (40).

[0057] A second adsorption mechanism, such as a suction tube capable of adsorbing a second electrode (3) moved from the second magazine (40), may be disposed in the second alignment table (50), and the second adsorption mechanism may adsorb the second electrode (3) to the second alignment table (50).

[0058] The secondary battery cell stack manufacturing device may further include a gripper (80).

[0059] The gripper (80) can transport an electrode, for example, a second electrode (3). The gripper (80) can transport the second electrode (3) on the upper side of the second alignment table (50) to the stack table (10).

[0060] A gripper suction mechanism, such as a suction tube capable of adsorbing the second electrode (3), may be disposed in the gripper (80), and the second electrode (30) placed on the second alignment table (50) may be adsorbed by a suction method.

[0061] The gripper (80) may be a single unit, or multiple units may be used to minimize the manufacturing time of multiple cell stacks. When there are multiple grippers (80), the gripper (80) may include an upper gripper (82) and a lower gripper (84), and the lower gripper (84) may be positioned below the upper gripper (82).

[0062] Each of the upper gripper (82) and the lower gripper (84) can grip the second electrode (3), and when either of them is positioned on the upper side of the second alignment table (50), the other of them can be positioned on the upper side of the stack table (80).

[0063] The gripper (80) can be moved by the gripper transfer unit (86)(88).

[0064] The gripper transfer unit (86)(88) is connected to the gripper (80) and can move the gripper (80). The gripper transfer unit (86)(88) may include a driving source, such as a motor or cylinder, connected to the gripper (80) directly or through a power transmission member. The gripper transfer unit (86)(88) may include a linear guide that guides the movement of the gripper (80). The gripper transfer unit (86)(88) can move the gripper (80) in a horizontal direction.

[0065] Gripper transfer units (86)(88) may be provided in multiple numbers, and the multiple gripper transfer units (86)(88) may include an upper gripper transfer unit (86) connected to an upper gripper (82) to move the upper gripper (82), and a lower gripper transfer unit (88) connected to a lower gripper (84) to move the lower gripper (84).

[0066] The secondary battery cell stack manufacturing device may further include a discharge unit (90) for discharging the cell stack (1).

[0067] The discharge unit (90) can be positioned to move along the first work line (W1).

[0068] The discharge unit (90) can be positioned to move to the upper side of the stack table (10), and can be advanced to the upper side of the stack table (10), particularly the upper side of the stack table (10), and can discharge the cell stack (1) to the upper side of the stack table (10).

[0069] The second alignment table (50) can be positioned to move to the adsorption area (P1) and the gripping area (P2).

[0070] The adsorption area (P1) can be defined as an area where the second electrode (3) is adsorbed to the second alignment table (50), and the second alignment table (50) can be an area where the second electrode (3) moved from the second magazine (40) is adsorbed.

[0071] The gripping area (P2) can be defined as an area where the gripper (80) grips the second electrode (3), and can be an area where the gripper (80) grips the second electrode (3) placed on the second alignment table (50).

[0072] The secondary battery cell stack manufacturing device may further include an alignment table transfer unit (not shown), and the alignment table transfer unit may move the second alignment table (50) to an adsorption area (P1) or a gripping area (P2).

[0073] The alignment table transfer unit may be connected to the second alignment table (50). The alignment table transfer unit may include a driving source, such as a motor or cylinder, connected to the second alignment table (50) directly or through a power transmission member. The alignment table transfer unit may include a linear guide that guides the movement of the second alignment table (50). The alignment table transfer unit may move the second alignment table (50) in a horizontal direction.

[0074] The stack table (10) can be positioned on the first work line (W1) and can be arranged to move along the first work line (W1).

[0075] The stack table (10) can be positioned to move to the first electrode stack area (P3) and the second electrode stack area (P4).

[0076] The first electrode stack area (P3) can be defined as an area that receives the first electrode (2) from the first alignment table (30), and the first electrode (2) can be moved to the first electrode stack area (P3) and stacked on the stack table (10).

[0077] The first electrode stack area (P3) may be an area closer to the first alignment table (30) than the second electrode stack area (P4).

[0078] The second electrode stack area (P4) can be defined as an area that receives the second electrode (3) from the gripper (80), and may be an area located in front of or behind the gripping area (P2).

[0079] The secondary battery cell stack manufacturing device may further include a stack table transfer unit (not shown).

[0080] The stack table transfer unit can move the stack table (10) to the first electrode stack area (P3) or the second electrode stack area (P4).

[0081] The stack table transfer unit can be connected to the stack table (10).

[0082] The stack table transfer unit may include a driving source, such as a motor or cylinder, connected directly to the stack table (10) or through a power transmission member. The stack table transfer unit may include a linear guide that guides the movement of the stack table (10). The stack table transfer unit may move the stack table (10) in a horizontal direction.

[0083] The first magazine (20), the first alignment table (30), the stack table (10), and the discharge unit (90) are arranged sequentially in the left-right direction (X) along the first work line (W1), and the stack table (10) can be moved in the left-right direction (X) along the first work line (W1).

[0084] The stack table (10) can be moved along the first work line (W1) from the first electrode stack area (P3) to the second electrode stack area (P4), and conversely, from the second electrode stack area (P4) to the first electrode stack area (P3).

[0085] The second magazine (40) and the second alignment table (50) are arranged sequentially in the left and right directions along the second work line (W2), and the second alignment table (50) can be moved in the left and right directions (X) along the second work line (W2).

[0086] The second alignment table (50) can be moved in the left-right direction (X) from the adsorption area (P1) to the gripping area (P2), and conversely, can be moved in the left-right direction (X) from the gripping area (P2) to the adsorption area (P1).

[0087] The first work line (W1) and the second work line (W) can be separated in the front-rear direction (Y).

[0088] The first pick and place unit (60) can transport the first electrode (2) to the stack table (10) when the stack table (10) is moved to the first electrode stack area (P3).

[0089] The second pick and place unit (70) can move the second electrode (3) of the second magazine (50) to the second alignment table (50) when the second alignment table (50) is completed to the adsorption area (P1).

[0090] The gripper transfer unit (86)(88) can move the gripper (80) in the forward and backward direction (Y), move the gripper (80) from the gripping area (P2) to the second electrode stack area (P4) in the forward and backward direction (Y), and move the gripper (80) from the second electrode stack area (P4) to the gripping area (P2) in the forward and backward direction (Y).

[0091] The gripper (80) can detach the second electrode (3) to the stack table (1) when the stack table (80) is moved to the second electrode stack area (P4). When the second electrode (3) being adsorbed is positioned on the upper side of the stack table (1), the gripper (80) can release the adsorbed second electrode (3), and the second electrode (3) can be separated from the gripper (80) and placed on the separator (4).

[0092] The discharge unit (90) can be positioned to move to the second electrode stack area (P4) and the discharge area (P5).

[0093] The discharge area (P5) may be an area spaced apart from the second electrode stack area (P4) along the first work line (W1), and may be an area where the stacked cell stack (1) is withdrawn.

[0094] The discharge unit (90) can be positioned to advance to the second electrode stack area (P4) and retract to the discharge area (P5).

[0095] The secondary battery cell stack manufacturing device may further include an exhaust unit transfer unit (not shown).

[0096] The discharge unit transfer unit can move the discharge unit (90) to the second electrode stack area (P4) or the discharge area (P5).

[0097] The discharge unit transfer unit can be connected to the discharge unit (90).

[0098] The discharge unit transfer unit may include a driving source, such as a motor or cylinder, connected directly to the discharge unit (90) or through a power transmission member. The discharge unit transfer unit may include a linear guide that guides the movement of the discharge unit (90). The discharge unit transfer unit may move the discharge unit (90) in a horizontal direction, particularly in the left-right direction (X).

[0100] FIG. 6 is a plan view of a comparative example compared with a cell stack manufacturing apparatus for a secondary battery according to the present embodiment, and FIG. 7 is a front view of a comparative example compared with a cell stack manufacturing apparatus for a secondary battery according to the present embodiment.

[0101] A comparative example is an example in which the first magazine (20), the first alignment table (30), the stack table (10'), the second alignment table (50'), and the second magazine (40) are arranged in one row along a single work line (W3).

[0102] The stack table (10') of the comparative example can be moved in the left-right direction (X) to the first electrode stack area (P3) and the second electrode stack area (P4), and can be raised and lowered in the up-down direction (Z) in the second electrode stack area (P4).

[0103] The discharge unit (90') of the comparative example is positioned along the work line (W3) and can be positioned closest to the second magazine (3), and is positioned to advance from the second electrode stack area (P4) to the raised area (P6) and retract to the discharge area (P5), so that the stack cell (1) of the raised area (P6) can be drawn out to the discharge area (P5).

[0104] When comparing this embodiment with a comparative example, the travel distance (L1, see FIG. 1) of the discharge unit (90) of this embodiment may be shorter than the travel distance (L2, see FIG. 6) of the discharge unit (90') of the comparative example, and this embodiment may minimize the manufacturing time for manufacturing a plurality of cell stacks (1).

[0106] Below, the discharge process for discharging the cell stack (1) is described in detail.

[0107] FIG. 8 is a diagram showing the gripper shown in FIG. 1 when it is moved to the upper side of the second alignment table, and FIG. 9 is a diagram showing the second alignment table shown in FIG. 8 when it is moved close to the second magazine.

[0108] FIG. 10 is a diagram showing the second alignment table shown in FIG. 9 adsorbing the second electrode, and FIG. 11 is a diagram showing the second alignment table shown in FIG. 10 moving to the lower side of the gripper and the gripper adsorbing the second electrode.

[0109] FIG. 12 is a diagram showing the gripper shown in FIG. 11 moving to the upper side of the stack table and detaching the second electrode to the stack table, and FIG. 13 is a front view showing the gripper shown in FIG. 12, the stack table, and the discharge unit.

[0110] FIGS. 8 to 12 illustrate the process of transferring the uppermost second electrode among the second electrodes installed in the cell stack (1) to the stack table (10).

[0111] As shown in FIG. 8, the gripper (80) can be positioned above the second alignment table (50) located at the gripping position (P2), and the second alignment table (50) can be moved in the left-right direction (X) to the adsorption area (P1) shown in FIG. 9.

[0112] When the second alignment table (50) is moved to the adsorption area (P1), the second pick and place unit (70) can transport the second electrode (3) to the second alignment table (50).

[0113] When the second electrode (3) is moved to the second alignment table (50) as shown in FIG. 10, the second alignment table (50) can adsorb the second electrode (3) and align the position or angle of the second electrode (3).

[0114] When the alignment of the second electrode (3) is completed, the second alignment table (50) can be moved to the gripping area (P2), and the gripper (80) can adsorb and grip the second electrode (3) as shown in FIG. 11.

[0115] With the second electrode (3) adsorbed to the gripper (80), the gripper (80) can be moved in the forward and backward direction (Y) toward the upper side of the second electrode stack area (P3) as shown in FIGS. 12 and 13, and after the gripper (80) has finished moving toward the upper side of the second electrode stack area (P3), the second electrode (3) can be detached to the stack table (50).

[0116] As described above, after the second electrode (3) is detached from the stack table (50), the secondary battery cell stack manufacturing device performs the process of extracting the cell stack (1) to the discharge area.

[0118] FIG. 14 is a view when the gripper shown in FIG. 12 moves to the upper side of the second alignment table and the discharge unit advances to the cell stack, and FIG. 15 is a front view showing the stack table and discharge unit shown in FIG. 14.

[0119] FIG. 16 is a view when the gripper shown in FIG. 14 is moved to the upper side of the second alignment table and the discharge unit is retracted, and FIG. 17 is a front view showing the stack table and discharge unit shown in FIG. 16.

[0120] Figure 18 is a diagram showing the cutting of the separator membrane illustrated in Figure 17.

[0121] FIGS. 14 to 18 illustrate the process of withdrawing a stacked cell stack (1) to an exhaust area (P5).

[0122] When the manufacturing of the cell stack (1) is completed, the gripper (80) located above the first electrode stack area (P3) is moved to the upper side of the second alignment table (50) located in the gripping area (P2) as shown in FIG. 14, and the discharge unit (90) can be advanced from the discharge area (P5) to the upper side of the second electrode stack area (P3) as shown in FIG. 12, FIG. 14, and FIG. 15.

[0123] The discharge unit (90) can grasp the cell stack (1) placed on the stack table (50) and, as shown in FIGS. 16 and 17, can be retracted from the upper side of the second electrode stack area (P3) to the discharge area (P5), at which time the separator (4) connected to the cell stack (1) extends in the left-right direction (X) across the second electrode stack area (P3) and the discharge area (P5).

[0124] When the discharge unit (90) is fully moved to the discharge area (P5), a cutting mechanism (not shown), such as a cutter installed on the stack table (10), can cut one side (C) of the separator (4), and the cell stack (1) can be separated from the separator (4).

[0126] The above description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention.

[0127] Accordingly, the embodiments disclosed in this invention are intended to explain, not limit, the technical concept of the invention, and the scope of the technical concept of the invention is not limited by these embodiments.

[0128] The scope of protection of the present invention shall be interpreted by the claims below, and all technical ideas within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0130] 1; Cell stack 2: First electrode 3: Second electrode 4: Separator 10: Stack Table 20: 1st Magazine 30: 1st Alignment Table 40: 2nd Magazine 50: 2nd Align Table 60: 1st Pick and Place Unit 80: Gripper 90: Discharge Unit P1: Adsorption area P2: Griping area W1: 1st work line W2: 2nd work line

Claims

Claim 1 A secondary battery cell stack manufacturing apparatus for manufacturing a cell stack in which a first electrode and a second electrode are alternately arranged with a separator in between, comprising: a stack table; a first magazine and a first alignment table arranged in a row along a first work line; a first pick-and-place unit for moving a first electrode of the first magazine to the first alignment table; a second magazine and a second alignment table arranged in a row along a second work line parallel to the first work line; and a gripper for transporting a second electrode above the second alignment table to the stack table. A secondary battery cell stack manufacturing apparatus comprising: a discharge unit positioned to move upward from the stack table to discharge a cell stack; wherein the second alignment table is positioned to move to an adsorption area and a gripping area, the adsorption area is an area where the second alignment table adsorbs a second electrode moved from the second magazine, and the gripping area is an area where the gripper grips the second electrode; further comprising an alignment table transfer unit that moves the second alignment table to the adsorption area or the gripping area, and a second pick and place unit that moves the second electrode of the second magazine to the second alignment table when the second alignment table is completed to move to the adsorption area; wherein the discharge unit is positioned to move along the first work line, and the first work line and the second work line are spaced apart in the front-rear direction. Claim 2 A secondary battery cell stack manufacturing apparatus according to claim 1, further comprising an alignment table transfer unit that moves the second alignment table to an adsorption area or a gripping area. Claim 3 In claim 1, the stack table is a secondary battery cell stack manufacturing device arranged to move along the first work line. Claim 4 A secondary battery cell stack manufacturing apparatus according to claim 1, wherein the stack table is arranged to move to a second electrode stack area (P4) located in front of or behind the gripping area, and to a first electrode stack area (P3) that is closer to the first alignment table than the second electrode stack area and receives a first electrode from the first alignment table. Claim 5 In claim 4, the gripper is a secondary battery cell stack manufacturing device that detaches the second electrode to the stack table when the stack table is completely moved to the second electrode stack area. Claim 6 A secondary battery cell stack manufacturing apparatus according to claim 4, further comprising a stack table transfer unit for moving the stack table to the first electrode stack area or the second electrode stack area. Claim 7 In claim 4, the first pick-and-place unit is a secondary battery cell stack manufacturing device that transports the first electrode to the stack table when the stack table is completed to the first electrode stack area. Claim 8 delete Claim 9 delete Claim 10 In claim 4, the discharge unit is positioned to advance to the second electrode stack area and to retract to a discharge area spaced apart from the second electrode stack area, forming a secondary battery cell stack manufacturing apparatus.

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