KR20220013697A - Overhang inspection apparatus for secondary battery and secondary battery manufacturing system having the same - Google Patents

Abstract

The present invention relates to an overhang inspection device for a secondary battery. The overhang inspection device for a secondary battery according to the present invention comprises: a stage unit for supply having a stage part for supply on which an electrode laminate prepared by alternately stacking a negative electrode and a positive electrode with a separator interposed therebetween is loaded; a jig unit for laminate having a first jig part and a second jig part for clamping the electrode laminated and moving the first jig part and the second jig part in a first axial direction; an inspection imaging unit disposed adjacent to the jig unit for laminate, and imaging an electrode laminate; a stage unit for discharging disposed adjacent to the jig unit for laminate and having a stage part for discharging on which the electrode laminate imaged by the inspection imaging unit is loaded; and a transfer unit for laminate disposed adjacent to the jig unit for the laminate and transferring the electrode laminate from the stage unit for supply to the jig unit for laminate and from the jig unit for laminate to the stage unit for discharging. The present invention relates to an overhang inspection device and a battery manufacturing system for a secondary battery capable of detecting overhang parts of electrodes by completely inspecting an electrode laminate formed by stacking electrodes during a manufacturing process of a secondary battery made of inlines.

Description

Overhang inspection apparatus for secondary battery and secondary battery manufacturing system having the same

The present invention relates to an overhang inspection apparatus for a secondary battery and a secondary battery manufacturing system having the same, and more particularly, to a short circuit ( Short circuit) to a secondary battery overhang inspection apparatus capable of inspecting whether or not, and to a secondary battery manufacturing system having the same.

In general, secondary cells convert chemical energy into electrical energy to supply power to an external circuit, and when discharged, receive external power to convert electrical energy into chemical energy to store electricity points to Such a secondary battery is also commonly referred to as a capacitor.

Such secondary batteries may be variously classified according to the structure of the electrode stack. For example, the secondary battery may be classified into a stack type structure, a winding type structure, a stack/folding type structure, and the like.

Among the various classifications, the stacked structure cuts an electrode, that is, a positive electrode and a negative electrode to a predetermined size, and then places a separator P between the positive electrode E1 and the negative electrode E2 as shown in FIG. It indicates that the electrode laminate M is formed by alternately stacking the positive electrode E1 and the negative electrode E2. This stacking process is performed in a stacking device for secondary batteries. In this electrode stack M, the positive electrode E1 may protrude laterally, and a portion protruding laterally in this way is called an overhang portion.

On the other hand, during the stacking process, some of the electrodes E1 and E2 stacked on the electrode stack M as shown in FIG. Defects may occur. That is, when the distal ends of some of the electrodes E1 and E2 protrude to the side excessively (out of the reference value) compared to the other electrodes E1 and E2, the overhang portions of the protruding electrodes E1 and E2 are in contact with each other. A short circuit (short circuit) may occur, but the secondary battery in which the short circuit (short circuit) of the electrodes E1 and E2 has occurred cannot be used.

The excessively protruding overhang portion of the electrodes E1 and E2 (out of the reference value) is mainly caused by lamination defects. Defects may occur in the entire manufactured product.

Accordingly, there is a need to develop an inspection device capable of inspecting the overhang portion of the electrodes E1 and E2 protruding excessively (out of the reference value) during the manufacturing process of the secondary battery made in the inline in the inline equipment.

Republic of Korea Patent Publication No. 10-2013-0105578, (2013.09.25.)

Accordingly, the technical problem to be achieved by the present invention is an overhang inspection apparatus for a secondary battery capable of detecting overhang portions of electrodes by completely inspecting an electrode stack formed by stacking electrodes during a manufacturing process of a secondary battery made in inline, and having the same It is to provide a secondary battery manufacturing system.

According to an aspect of the present invention, a supply stage unit having a supply stage unit on which an electrode stack prepared by alternately stacking a negative electrode and a positive electrode with a separator interposed therebetween; a jig unit for a laminate having a first jig unit and a second jig unit for clamping the electrode laminate by receiving it, and moving the first jig unit and the second jig unit in a first axial direction; an inspection imaging unit disposed adjacent to the jig unit for the laminate and configured to image the electrode laminate; a stage unit for discharging disposed adjacent to the jig unit for the laminate and having a stage for discharging on which the electrode laminate imaged by the inspection imaging unit is mounted; and a transfer unit for a laminate disposed adjacent to the jig unit for the laminate, transferring the electrode laminate from the stage unit for supply to the jig unit for the laminate, and from the jig unit for the laminate to the stage unit for discharging. An overhang inspection device for a secondary battery including a secondary battery may be provided.

The jig unit for the laminate includes a first jig moving block unit to which the first jig unit is coupled; a moving block unit for a second jig to which the second jig unit is coupled; a moving guide unit for a jig connected to the first moving block unit for the jig and the second moving block unit for the jig, and guiding the movement of the first moving block unit for the first jig and the second moving block unit for the jig; and a moving driving unit for a jig connected to the first moving block unit for the jig and the second moving block unit for the jig, and moving the first moving block unit for the first jig and the second moving block unit for the jig. .

The transfer unit for the laminate may include: a holding unit for holding the electrode laminate; a first axial movement part for holding the grip part and moving the grip part in the first axial direction; a second axial movement unit for gripping connected to the first axial movement unit for gripping, and configured to move the first axial movement portion for gripping in a second axial direction crossing the first axial direction; and a third axial movement for gripping which is connected to the first axial movement for gripping and coupled to the gripper, and moves the gripper in a third axial direction intersecting the first and second axial directions. may include wealth.

The stage unit for supply may include a stage moving unit for supply that supports the stage unit for supply and moves the stage unit for supply in the first axial direction.

The stage unit for discharging may include a stage moving unit for discharging that supports the stage unit for discharging and moves the stage unit for discharging in the first axial direction.

It may further include an electrode loading unit for loading the electrode stack to the stage for supply.

It may further include an electrode unloading unit for unloading the electrode stacked body loaded on the stage for discharging (unloading).

A plurality of jig units for the laminate may be provided and disposed to be spaced apart from each other.

According to another aspect of the present invention, a stacking device for a secondary battery for generating an electrode stack by alternately stacking a negative electrode and a positive electrode with a separator interposed therebetween; an inspection transfer device for transferring the electrode stack stacked in the secondary battery stacking device; and an overhang inspection device for secondary batteries that receives and captures the electrode stack transferred by the transport device for inspection, and transfers the captured electrode stack to the transport device for inspection, wherein the overhang for secondary batteries The inspection apparatus includes: a stage unit for supply having a stage for supply on which the electrode stack is loaded; a jig unit for a laminate having a first jig unit and a second jig unit for clamping the electrode laminate by receiving it, and moving the first jig unit and the second jig unit in a first axial direction; an inspection imaging unit disposed adjacent to the jig unit for the laminate and configured to image the electrode laminate; a stage unit for discharging disposed adjacent to the jig unit for the laminate and having a stage for discharging on which the electrode laminate imaged by the inspection imaging unit is mounted; and a transfer unit for a laminate disposed adjacent to the jig unit for the laminate, transferring the electrode laminate from the stage unit for supply to the jig unit for the laminate, and from the jig unit for the laminate to the stage unit for discharging. A secondary battery manufacturing system including the may be provided.

The jig unit for the laminate includes a first jig moving block unit to which the first jig unit is coupled; a moving block unit for a second jig to which the second jig unit is coupled; a moving guide unit for a jig connected to the first moving block unit for the jig and the second moving block unit for the jig, and guiding the movement of the first moving block unit for the first jig and the second moving block unit for the jig; And it is connected to the first moving block unit for the jig and the second moving block unit for the jig, it may include a moving driving unit for the jig for moving the first moving block unit for the first jig and the second moving block unit for the jig.

The transfer unit for the laminate may include: a holding unit for holding the electrode laminate; a first axial movement part for holding the grip part and moving the grip part in the first axial direction; a second axial movement unit for gripping connected to the first axial movement unit for gripping, and configured to move the first axial movement portion for gripping in a second axial direction crossing the first axial direction; and a third axial movement for gripping which is connected to the first axial movement for gripping and coupled to the gripper, and moves the gripper in a third axial direction intersecting the first and second axial directions. may include wealth.

The stage unit for supply may include a stage moving unit for supply that supports the stage unit for supply and moves the stage unit for supply in the first axial direction.

The stage unit for discharging may include a stage moving unit for discharging that supports the stage unit for discharging and moves the stage unit for discharging in the first axial direction.

It may further include an electrode loading unit for loading the electrode stack transferred by the inspection transfer device to the stage for supply.

It may further include an electrode unloading unit for unloading the electrode stacked body loaded on the stage for discharging and transferring it to the transport device for inspection.

According to the present invention, a jig unit for a laminate having a first jig part and a second jig part for clamping the electrode laminate and moving the first jig part and the second jig part in the first axial direction, and an inspection for imaging the electrode laminate By having an imaging unit for secondary batteries, the electrode stack is inspected quickly and easily during the manufacturing process of secondary batteries made in-line to detect overhangs of electrodes to minimize the production of defective products, and to prevent the delivery of defective products to improve quality reliability. can be raised

In addition, according to the present invention, the first jig part and the second jig part are relatively moved with respect to the inspection imaging unit, so that the number of inspection imaging units can be reduced, thereby reducing manufacturing and maintenance costs. .

1 is a diagram illustrating a state in which electrodes of a secondary battery are stacked.
2 is a diagram illustrating a secondary battery manufacturing system according to an embodiment of the present invention.
FIG. 3 is a view of the inside of the overhang inspection apparatus for a secondary battery of FIG. 2 as viewed from above.
FIG. 4 is a view viewed from the front of the transfer unit for the laminate of FIG. 3 .
FIG. 5 is a front view of the stage unit for supply and the stage unit for discharge of FIG. 3 .
6 is a view of the jig unit for a laminate of FIG. 3 viewed from the front.
FIG. 7 is a view showing the first jig holding part of FIG. 6 .
FIG. 8 is a plan view of FIG. 7 .
9 is a side view of FIG. 7 ;
10 is an operation state diagram illustrating movement of the first jig unit and the second jig unit of FIG. 6 .

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings. However, in describing the present invention, descriptions of known functions or configurations will be omitted in order to clarify the gist of the present invention.

2 is a view showing a secondary battery manufacturing system according to an embodiment of the present invention, FIG. 3 is a view of the inside of the overhang inspection apparatus for a secondary battery of FIG. 2 as viewed from above, and FIG. 4 is the stack of FIG. It is a view seen from the front of the transfer unit for the sieve, FIG. 5 is a view seen from the front of the stage unit for supply and the stage unit for discharge of FIG. 3, and FIG. 6 is a view viewed from the front of the jig unit for the laminate of FIG. 7 is a view showing the first jig holding part of FIG. 6 , FIG. 8 is a plan view of FIG. 7 , FIG. 9 is a side view of FIG. 7 , and FIG. 10 is the movement of the first jig part and the second jig part of FIG. 6 This is an operation state diagram shown. In FIG. 3 , the illustration of the moving driving unit 116 for the jig is omitted for convenience of illustration.

In the drawings below, the first axis direction is indicated by 'X', the second axis direction is indicated by 'Y', and the third axis direction is indicated by 'Z'.

In the secondary battery manufacturing system according to this embodiment, as shown in FIGS. 2 to 10, a negative electrode (not shown) and a positive electrode (not shown) are alternately stacked with a separator (not shown) interposed therebetween. A stacking device for secondary batteries (SC) for generating a laminate (M), a transport device for inspection (200) for transporting the electrode stack (M) stacked in the stacking device for secondary batteries (SC), and transport for inspection An overhang inspection apparatus 100 for a secondary battery that receives the electrode stack M transferred by the device 200 and delivers an image, and transfers the imaged electrode stack M to the transfer device 200 for inspection, and 2 An external surface inspection device (SD) that inspects the outer surface of the electrode laminate (M) while receiving the electrode laminate (M) that has passed the overhang inspection device (100) for a battery, and an external surface inspection device (SD) A TAB (Tape Automated Bonding) device that receives the electrode stack (M) and attaches a film with a driving chip to the electrode stack (M), a transfer device for inspection 200 and an external surface inspection device (SD) The electrode stack (M), which is connected and passed the overhang inspection device 100 for secondary batteries, is transferred to the external surface inspection device (SD), and is connected to the external surface inspection device (SD) and the TAB device (TAB) to inspect the external surface A transfer device (SF) for transferring the electrode stack (M) that has passed through the device (SD) to the TAB device (TAB), a stacking device for secondary batteries (SC), an outer surface inspection device (SD), and the secondary The battery overhang inspection device 100, the TAB device (TAB), and the inspection transport device 200 and the transport device for delivery (SF) are connected to the secondary battery stacking device (SC), the outer surface inspection device (SD), It includes a control unit (not shown) for controlling the overhang inspection device 100 for the secondary battery, the TAB device (TAB), the transport device 200 for inspection, and the transport device for delivery (SF).

The secondary battery stacking device SC alternately stacks a negative electrode (not shown) and a positive electrode (not shown) with a separator (not shown) interposed therebetween to produce an electrode stack M.

This stacking device for secondary batteries supplies a device body (not shown), a positive electrode supply unit (not shown) for supplying a positive electrode (not shown), a supply unit (not shown) for supplying a negative electrode (not shown), and a separator (not shown). and a supply unit (not shown) and a movable stacking unit (not shown).

A movable stacking unit (not shown) forms a place where a positive electrode (not shown), a negative electrode (not shown) and a separator (not shown) are stacked, and such a movable stacking unit (not shown) includes a positive electrode supply unit (not shown) and a negative electrode The stacking operation is performed while moving between the supply units (not shown).

The transport device for inspection 200 transports the electrode stack M stacked in the stacking device SC for secondary batteries. The inspection transfer device 200 is connected to the secondary battery stacking device SC and the secondary battery overhang inspection device 100 to transfer the electrode stack M to the secondary battery overhang inspection device 100 .

In addition, the transport device for inspection 200 is connected to the transport device for delivery (SF) and transfers the transport device (SF) for delivery of the overhang test completed electrode stack (M).

As shown in FIGS. 2 to 3 , the inspection transfer device 200 is an electrode stacked body (M) to be imaged by an inspection imaging unit 120 to be described later of the overhang inspection device 100 for a secondary battery. A supply transfer unit 210 for transporting a, and a discharge transfer unit 220 disposed adjacent to the overhang inspection device 100 for secondary batteries and transporting the electrode stack M imaged by the inspection imaging unit 120 ) is included.

The supply transfer unit 210 includes a plurality of supply conveyor rollers (not shown) that support the electrode laminate M and transport the electrode laminate M by rotation, and a supply conveyor roller (not shown). It includes a roller frame for supply (not shown) that is rotatably coupled.

The discharging conveying unit 220 includes a plurality of discharging conveyor rollers (not shown) and discharging conveyor rollers (not shown) that support the electrode laminate M and transport the electrode laminate M by rotation. It includes a roller frame for discharge (not shown) that is rotatably coupled.

On the other hand, the overhang inspection apparatus 100 for secondary batteries receives the electrode stack M from the stacking device SC for secondary batteries. This secondary battery overhang inspection apparatus 100 images the electrode stack (M).

The overhang inspection apparatus 100 for a secondary battery of this embodiment receives the electrode stack M transferred by the supply transfer unit 210 and takes an image, so that the distal end of some electrodes (not shown) are other electrodes (not shown). Inspect the overhang area that protrudes laterally compared to the

In addition, the overhang inspection apparatus 100 for a secondary battery transfers the electrode stack M, which has been inspected by imaging, to the discharging transfer unit 220 .

As shown in detail in FIGS. 3 to 10 , the overhang inspection apparatus 100 for a secondary battery is a supply stage unit 140 having a supply stage unit 141 on which the electrode stack M is loaded. and a first jig part 111 and a second jig part 112 for clamping the electrode stack M by receiving the first jig part 111 and the second jig part 112 on the first axis. A jig unit 110 for a stacked body moving in the direction, an inspection imaging unit 120 disposed adjacent to the stacked body jig unit 110 and imaging the electrode stack M, and a stacked body jig unit 110 A stage unit 150 for discharging having a stage unit 151 for discharging which is disposed adjacent to and on which the electrode stack M imaged by the imaging unit 120 for inspection is loaded, and a jig unit for a laminate 110 ) and transfer the electrode laminate (M) from the stage unit 140 for supply to the jig unit 110 for the laminate and transfer from the jig unit 110 for the laminate to the stage unit 150 for discharge. An electrode loading unit for loading the electrode stack M transferred by the transfer unit 130 for the sieve and the transfer unit 210 for supply of the transfer device 200 for inspection onto the stage unit 141 for supply (loading) 160) and the electrode unloading unit 170 for unloading the electrode stack (M) loaded on the stage unit 151 for discharge and transferring it to the discharge transfer unit 220 of the transfer device 200 for inspection ) is included.

The electrode loading unit 160 loads the electrode stack M transferred by the transfer unit 210 for supply of the transfer device 200 for inspection onto the stage unit 141 for supply.

The electrode loading unit 160 is connected to the electrode pickup unit 161 for loading that picks up the electrode stack M supported by the transfer unit 210 for supply, and the electrode pickup unit 161 for loading. and a moving part 162 for the loading pickup for moving the electrode pickup part 161 for loading in the second axial direction.

The moving unit 162 for the pickup unit for loading includes a moving block unit (not shown) for the pickup unit for loading that is coupled to the electrode pick-up unit for loading 161 and moves in the second axis direction, and a moving block unit for the pickup unit for loading (not shown). ) is connected to a moving guide for the pickup for loading (not shown) to guide the movement of the moving block for the pickup for loading (not shown), and a pickup for loading connected to the moving block for the pickup for loading (not shown). It includes a moving driving unit (not shown) for the pickup unit for loading to move the moving block unit (not shown) for loading.In this embodiment, the moving driving unit for the pickup unit for loading (not shown) is a moving block unit for the pickup unit for loading (not shown). ) and a moving nut (not shown) coupled to the ball screw (not shown) to which the moving nut (not shown) is engaged, and a driving motor (not shown) for rotating the ball screw.

The stage unit 140 for supply supports the stage unit 141 for supply, on which the electrode stack M is mounted, and the stage unit 141 for supply, and moves the stage unit 141 for supply in the first axial direction. It includes a stage moving unit 142 for supply to move.

The supply stage unit 141 is provided in the shape of a flat square plate. The electrode stack M is seated on the upper surface of the stage for supply 141 . In the present embodiment, a plurality of electrode stacks M may be stacked on the stage unit 141 for supply.

The stage moving part 142 for supply supports the stage part 141 for supply, and moves the stage part 141 for supply in a 1st axial direction.

The supply stage unit 141 is connected to the supply stage moving block unit 142a that is coupled to the supply stage unit 141 and is moved in the first axial direction, and the supply stage moving block unit 142a is connected to the supply stage. A moving guide part for a supply stage (not shown) for guiding the movement of the moving block unit 142a for a supply stage, and a supply stage connected to the moving block unit 142a for the supply stage to move the moving block unit 142a for the supply stage It includes a moving driving unit (142c) for. In this embodiment, the moving driving unit 142c for the supply stage includes a moving nut (not shown) coupled to the moving block unit 142a for the supply stage, and a ball screw (not shown) to which the moving nut (not shown) is meshed, and It includes a driving motor (not shown) for rotating the ball screw (not shown).

The jig unit 110 for a laminate includes a first jig unit 111 and a second jig unit 112 for receiving and clamping the electrode laminate M, and a first jig unit to which the first jig unit 111 is coupled. The moving block unit 113 for the second jig 112 is coupled to the second moving block unit 114 for the jig, the first moving block unit 113 for the first jig and the second moving block unit for the jig ( 114) and a movement guide for a jig (not shown) for guiding the movement of the first moving block unit 113 for a jig and a second moving block unit 114 for a jig, and a moving block unit for a first jig ( 113) and a second jig moving block unit 114 and connected to a first jig moving block unit 113 and a second jig moving block unit 114 for moving the moving block unit 114 for a jig. .

In this embodiment, the first jig part 111 and the second jig part 112 may be provided in pairs and disposed in the first axial direction.

In addition, in this embodiment, the first jig part 111 and the second jig part 112 are formed to have the same structure. Accordingly, the structure of the first jig unit 111 will be described below and the structure of the second jig unit 112 will be replaced with the structure of the first jig unit 111 .

The first jig part 111 clamps the electrode stack M. As shown in detail in FIGS. 6 to 10 , the first jig part 111 is moved in a direction approaching and spaced apart from the electrode stack M to clamp the electrode stack M for clamping the stack. (111c, 111d) for the first jig holding portion (111a) having a, and the first jig holding portion (111a) is coupled to the body for a first jig coupled to the first moving block portion 113 for the jig ( 111b).

The first jig body (111b), the first jig holding portion (111a) for rotating the second axis as a rotation axis, a tilting drive unit for a laminate (not shown), and a first jig holding portion (111a) A rotation drive unit (not shown) for a laminate for rotating the three axes as a rotation axis is provided.

The electrode laminate (M) held by the clamping units 111c and 111d for the laminate by the operation of the tilting driving unit for the laminate (not shown) and the rotation driving unit for the laminate (not shown) rotates the second axis and the third axis as the axis of rotation. to be rotated so that the electrode stack M can be positioned at various angles with respect to the imaging unit 120 for inspection, and accordingly, the imaging unit 120 for inspection can image the electrode stack M in various directions. There is an advantage in that the inspection accuracy is increased.

The first jig holding part 111a is coupled to the first jig body 111b and includes a clamping movement driving part 111e for moving the laminated clamping parts 111a and 111b.

The clamping parts 111c and 111d for the stacked body are moved in a direction approaching and separated from the electrode stacked body M to clamp and unclamp the electrode stacked body M. The clamping units 111c and 111d for the laminate are spaced apart from the first holding plate unit 111c connected to the clamping movement driving unit 115 and the first holding plate unit 111c, and are provided for clamping. and a second holding plate part 111d connected to the movement driving part 111e.

The electrode stack M is disposed between the first holding plate part 111c and the second holding plate part 111d, the first holding plate part 111c and the second holding plate part ( 111d) by the movement in the mutually approaching direction and the movement in the mutually spaced direction of the first holding plate portion 111c and the second holding plate portion 111d, the electrode stack M is the first holding plate It is clamped and unclamped by being pressed and released by the portion 111c and the second holding plate portion 111d.

The clamping movement driving unit 111e is coupled to the first jig body 111b. The clamping movement driving unit 111e moves the first holding plate part 111c and the second holding plate part 111d.

The clamping movement driving unit 111e according to the present embodiment is connected to the first holding plate part 111c and the second holding plate part 111d, and the first holding plate part 111c and the second holding plate part 111c. A gripping movement guide portion 111f for guiding the movement of the plate portion 111d, the first gripping plate portion 111c and the second gripping plate portion 111d are connected to each of the first gripping plate portion ( 111c) and a pair of gripping moving bars (111g) for moving each of the second gripping plate parts 111d in mutually approaching and mutually spaced directions, and a gripping movable bar (111g) connected to for gripping and a gripping moving driving unit (not shown) for moving the moving bar 111g.

The gripping movement guide portion 111f is provided in the shape of a guide rail to guide the movement of the first gripping plate portion 111c and the second gripping plate portion 111d.

A pneumatic cylinder (not shown) which is connected to the gripping moving bar 111g to move the first gripping plate portion 111c and the second gripping plate portion 111d may be used in the gripping movement driving unit (not shown). have.

As shown in detail in FIG. 6 , the second jig part 112 is moved in a direction approaching and spaced apart from the electrode stack M to clamp the electrode stack M to clamp the stacked body clamping part (not shown). A second jig holding part (112a) having a, and a second jig holding part (112a) are coupled and includes a second jig body (112b) coupled to the first moving block part 113 for the jig. .

As described above, since the structure of the second jig part 112 is almost the same as that of the first jig part 111 , a detailed description of the structure of the second jig part 112 is described above for the description of the first jig part 111 . be replaced with

The moving driving unit 116 for the jig is connected to the first moving block unit 113 for the jig and the second moving block unit 114 for the jig, and the first moving block unit 113 for the jig and the second moving block unit for the jig. (114) is moved in the first axis direction.

The first jig part 111 and the second jig part 112 may be moved from the position of FIG. 10( a ) to the position of FIG. 10( b ) by the operation of the movement driving unit 116 for the jig. In FIG. 10 (a), the electrode stack M clamped to the second jig part 112 is imaged by the inspection imaging unit 120, and in FIG. 10 (b), the electrode stack M clamped to the first jig part 111 is The electrode stack M is imaged by the inspection imaging unit 120 .

In this embodiment, the moving driving unit 116 for the jig includes a moving nut (not shown) coupled to each of the first moving block unit 113 for the jig and the second moving block unit 114 for the jig, and a moving nut (not shown). ) includes a meshed ball screw (not shown) and a driving motor (not shown) for rotating the ball screw.

The inspection imaging unit 120 is disposed adjacent to the jig unit 110 for a laminate. The inspection imaging unit 120 images the electrode stack (M).

As shown in detail in FIG. 3 , the imaging unit 120 for inspection includes a radiation emitting unit 121 that emits radiation toward the electrode stack M, and is spaced apart from the radiation emitting unit 121 . and a radiation detection unit 123 for detecting radiation, and a radiation shielding unit 128 for shielding the radiation emission unit 121 and the radiation detection unit 123 .

In this embodiment, X-rays are used as radiation, and the radiation emitting unit 121 emits X-rays.

The radiation detector 123 is disposed to be spaced apart from the radiation emitter 121 to detect the radiation emitted from the radiation emitter 121a. The radiation detector 123 of this embodiment responds to the X-rays emitted from the radiation emitter 121a and visually displays them, so that the electrode stack M disposed between the radiation detector 123 and the radiation emitter 121 . It is possible to visually display the shape of the electrodes stacked therein, and accordingly, an overhang portion of the electrode of the electrode stack M can be visually observed.

The radiation shielding part 128 is provided in a housing structure that shields the radiation emitting part 121 and the radiation detection part 123 . The above-described radiation shielding unit 128 is provided with a through hole (K) through which the electrode loading unit 160 and the electrode unloading unit 170 pass.

The stage unit 150 for discharging is disposed adjacent to the jig unit 110 for a laminate. The stage unit 150 for discharging includes a stage unit 151 for discharging on which the electrode stack M imaged by the imaging unit 120 for inspection is mounted.

The stage unit 150 for discharge supports the stage unit 151 for discharge, on which the electrode stack M is loaded, and the stage unit 151 for discharge, and moves the stage unit 151 for discharge in the first axial direction. It includes a stage moving unit 152 for discharging to move.

The stage for discharging 151 is provided in the shape of a flat square plate. The electrode stack M is seated on the upper surface of the stage part 151 for discharging. In the present embodiment, a plurality of electrode stacks M may be stacked on the stage unit 151 for discharging.

The stage moving unit 152 for discharging supports the stage unit 151 for discharging, and moves the stage unit 151 for discharging in the first axial direction.

The discharging stage unit 151 is connected to the discharging stage unit 151 is coupled to the discharging stage moving block unit 152a that is moved in the first axial direction, and the discharging stage moving block unit 152a is connected to the discharging stage. A movement guide for the discharge stage (not shown) for guiding the movement of the moving block unit 152a for the discharge stage, and a discharge stage connected to the moving block unit 152a for the discharge stage to move the moving block unit 152a for the discharge stage It includes a moving driving unit (152c) for. In this embodiment, the moving driving unit 152c for the discharge stage includes a moving nut (not shown) coupled to the moving block unit 152a for the discharging stage, and a ball screw (not shown) to which the moving nut (not shown) is meshed; It includes a driving motor (not shown) for rotating the ball screw.

The transfer unit 130 for the laminate is disposed adjacent to the jig unit 110 for the laminate. The transfer unit 130 for the laminate transfers the electrode laminate M from the stage unit 140 for supply to the jig unit 110 for the laminate. In addition, the transfer unit 130 for the laminate transfers the electrode laminate (M) from the jig unit 110 for the laminate to the stage unit 150 for discharging.

In the present embodiment, the transfer unit 130 for the laminate includes a holding unit 131 for holding the electrode laminate M, and a holding unit for supporting the holding unit 131 as shown in FIGS. 3 to 4 . A first axial movement unit 133 for gripping for moving the 131 in the first axial direction, and a first axial movement portion 133 for grip connected to the first axial movement portion 133 for gripping The second axial direction moving part 135 for holding and moving in the second axial direction intersecting the first axial direction, and connected to the first axial direction moving unit 133 for holding, the holding part 131 is coupled, and the A gripping third axial direction moving part 137 for moving the holding part 131 in a third axial direction intersecting the first axial direction and the second axial direction, and a gripping third axial direction moving part 137 are supported. and a gripper rotating part 139 connected to the gripping part 131 to rotate the gripping part 131 with the second axis as a rotation axis.

The gripper 131 grips the electrode stack M. As shown in FIG. 4, the holding part 131 includes a holding module frame part 131a connected to the holding rotation part 139, and a holding fixed body part (131a) coupled to the holding module frame part (131a). 131b) and the gripping module frame portion 131a, the gripping movable body is movably coupled to the gripping fixed body portion 131b and is moved in a direction to be approached and spaced apart to grip and release the electrode stack (M). The part 131c, the holding module frame part 131a, and supported by the holding module moving guide part (not shown) for guiding the movement of the holding movable body 131c, and the holding module frame part 131a. And it is connected to the moving body part (131c) for holding and includes a moving driving unit (131d) for the holding module for moving the moving body part (131c) for holding.

The gripping movable body portion 131c is slidably coupled to the gripping module frame portion 131a. This holding movable body portion 131c is moved in a direction approaching the holding fixed body portion 131b to pressurize the electrode laminate M, thereby holding the fixed body portion 131b together with the electrode laminated body (M). ) to hold

The moving driving unit 131d for the holding module is supported by the holding module frame unit 131a. The moving driving unit 131d for the gripping module is connected to the gripping movable body 131c to move the gripping movable body 131c. The moving driving unit 131d for the gripping module according to this embodiment is made of a pneumatic or hydraulic cylinder.

A movement guide portion (not shown) for the gripping module is provided in the shape of a guide rail to guide the movement of the gripping movable body portion 131c.

The rotating part for holding 139 is connected to the holding part 131 . The rotating part 139 for holding rotates the holding part 131 with the second axis as a rotation axis.

Rotation unit 139 for gripping according to this embodiment, as shown in FIG. 4 , the rotation block portion 139a for transfer to which the grip portion 131 is coupled, and the third axis movement block portion 137a for gripping ) and includes a rotation block rotation driving unit 139b for transmission which is coupled to and rotates the rotation block unit 139a for transmission in the second axis direction (Y) as a rotation axis.

The third axial movement unit 137 for gripping is connected to the first axial movement portion 133 for gripping. In addition, the gripping part 131 is coupled to the third axial movement part 137 for gripping. The third axial movement unit 137 for holding moves the holding unit 131 in the third axial direction.

As shown in FIGS. 3 to 4 , the gripping third axial movement unit 137 according to the present embodiment is connected to the gripping portion 131 and is moved in the third axial direction for gripping in the third axis direction. A moving block portion 137a and a third axial movement guide portion for gripping connected to the third axial movement block portion 137a for gripping and guiding the movement of the gripping third axial movement block portion 137a ( and a third axial movement driving unit 137c for gripping connected to the third axial movement block portion 137a for gripping and moving the third axial movement block portion 137a for gripping.

The gripping third axis direction moving block portion 137a is coupled to the gripping rotation unit 139 and connected to the gripping portion 131 . The third axial movement block portion 137a for gripping is moved in the third axial direction to move the gripping portion 131 in the third axial direction.

The gripping third axial movement guide portion (not shown) is connected to the gripping third axial movement block portion 137a. The gripping third axial movement guide portion (not shown) guides the movement of the gripping third axial movement block portion 137a.

In this embodiment, the gripping third axial movement guide portion (not shown) is made of a guide rail (not illustrated) to which the gripping third axial movement block portion 137a is slidably coupled.

The third axial movement driving unit 137c for holding is connected to the third axial movement block unit 137a for holding. The third axial movement driving unit 137c for gripping moves the third axial movement block portion 137a for gripping.

The third axial movement driving unit 137c for gripping according to this embodiment is engaged with a movable nut (not shown) coupled to the gripping third axial movement block portion 137a, and a movable nut (not shown) It includes a ball screw (not shown) and a servomotor R connected to the ball screw (not shown) to rotate the ball screw (not shown).

The gripping first axial movement unit 133 supports the gripping portion 131 and moves the gripping portion 131 in the first axial direction.

The first axial movement unit 133 for gripping is, as shown in FIGS. 3 to 4 , the gripping first axial movement unit 137 for gripping and moving in the first axial direction is connected. A first axial movement guide for gripping connected to the axial movement block portion 133a and the first axial movement block portion 133a for gripping and guiding the movement of the first axial movement block portion 133a for gripping It includes a part (not shown) and a first axial movement driving unit 133c for gripping connected to the first axial movement block portion 133a for gripping and moving the first axial movement block portion 133a for gripping. do.

The third axial movement unit 137 for gripping is connected to the first axial movement block portion 133a for holding. The gripping first axial movement block portion 133a is moved in the first axial direction to move the gripping portion 131 in the third axial direction.

The gripping first axial movement guide portion (not shown) is connected to the gripping first axial movement block portion 133a. This gripping first axial movement guide portion (not shown) guides the movement of the gripping first axial movement block portion 133a.

In the present embodiment, the gripping first axial movement guide portion (not shown) includes a guide rail (not illustrated) to which the gripping first axial movement block portion 133a is slidably coupled.

The first axial movement driving unit 133c for gripping is connected to the first axial movement block portion 133a for gripping. The first axial movement driving unit 133c for gripping moves the first axial movement block portion 133a for gripping.

The first axial movement driving unit 133c for gripping according to the present embodiment is coupled to a movable nut (not shown) coupled to the first axial movement block portion 133a for gripping, and the movable nut (not shown) is meshed with It includes a ball screw (not shown) and a servomotor (not shown) connected to the ball screw (not shown) to rotate the ball screw (not shown).

The second axial movement unit 135 for gripping is connected to the first axial movement portion 133 for gripping. The second axial movement unit 135 for holding moves the first axial movement unit 133 for holding in the second axial direction.

As shown in FIGS. 3 to 4 , the gripping second axial movement unit 135 is connected to the gripping second axial movement unit 133 and is moved in the second axial direction. The second axial direction movement guide part for gripping is connected to the direction movement block part 135a and the second axial direction movement block part 135a for gripping and guides the movement of the second axial direction movement block part 135a for gripping. (not shown), and a second axial movement driving unit 135c for gripping connected to the second axial movement block portion 135a for gripping and moving the second axial movement block portion 135a for gripping. .

The first axial movement unit 133 for gripping is connected to the second axial movement block portion 135a for gripping. The second axial movement block unit 135a for holding is moved in the second axial direction to move the holding unit 131 in the second axial direction.

The second axial movement guide part (not shown) for gripping is connected to the second axial movement block part 135a for gripping. The second axial movement guide part (not shown) for gripping guides the movement of the second axial movement block part 135a for gripping.

In the present embodiment, the gripping second axial movement guide portion (not shown) includes a guide rail (not illustrated) to which the gripping second axial movement block portion 135a is slidably coupled.

The second axial movement driving unit 135c for gripping is connected to the second axial movement block portion 135a for gripping. The second axial movement driving unit 135c for gripping moves the second axial movement block portion 135a for gripping.

The second axial movement driving unit 135c for gripping according to this embodiment is coupled to a movable nut (not shown) coupled to the second axial movement block portion 135a for gripping, and a movable nut (not shown) that is meshed with It includes a ball screw (not shown) and a servomotor (not shown) connected to the ball screw (not shown) to rotate the ball screw (not shown).

The second axial movement unit 135 for gripping is connected to the first axial movement portion 133 for gripping. The second axial movement unit 135 for holding moves the first axial movement unit 133 for holding in the second axial direction.

On the other hand, the electrode unloading unit 170 unloads the electrode stack (M) loaded on the stage unit 151 for discharging (unloading) and is loaded on the transfer unit 210 for supply.

The electrode unloading unit 170 includes an electrode pickup unit 171 for unloading that picks up the electrode stack M supported by the stage unit 151 for discharge, and an electrode pickup unit for unloading ( 171) and includes a moving part 172 for the pickup for unloading which moves the pickup for the electrode pickup 171 for unloading in the second axial direction.

The moving unit 172 for the pickup unit for unloading includes a moving block unit (not shown) for the pickup unit for unloading that is coupled to the electrode pick-up unit 171 for unloading and is moved in the second axis direction, and the movement for the pickup unit for unloading. A moving guide unit (not shown) for the pickup unit for unloading that is connected to the block unit (not shown) and guides the movement of the moving block unit (not shown) for the pickup unit for unloading. It is connected to the moving block unit (not shown) for the pickup unit for unloading and includes a moving driving unit (not shown) for the pickup unit for unloading to move the moving block unit (not shown) for the pickup unit for unloading. In this embodiment, the moving drive unit (not shown) for the pickup unit for unloading includes a moving nut (not shown) coupled to the moving block unit (not shown) for the pickup unit for unloading, and a ball screw to which the moving nut (not shown) is meshed. (not shown) and a driving motor (not shown) for rotating the ball screw.

On the other hand, the outer surface inspection device (SD) is supplied through the transfer device (SF) for the transfer of the electrode stack (M) on which the overhang inspection process of the overhang inspection device for secondary batteries has been performed. The outer surface inspection device SD inspects the outer surface of the electrode stack M.

In this embodiment, the external surface inspection device SD is connected to a camera unit (not shown) and a camera unit (not shown) for imaging the outer surface of the electrode stack M, and the camera unit (not shown) acquires and a communication unit (not shown) for transmitting information to the control unit.

A camera unit (not shown) captures the outer surface of the electrode stack M. Such a camera unit (not shown) inspects whether foreign substances are attached to the outer surface of the electrode stack M by imaging the outer surface of the electrode stack M and the external shape of the electrode stack M.

On the other hand, the transfer device for delivery (SF) is connected to the transfer device for inspection 200 and the outer surface inspection device (SD) to inspect the outer surface of the electrode stack (M) that has passed the overhang inspection device 100 for secondary batteries to the device (SD).

In addition, the transfer device (SF) for delivery is connected to the outer surface inspection device (SD) and the TAB device (TAB) to transfer the electrode stack (M) passing through the outer surface inspection device (SD) to the TAB device (TAB) do.

The transfer device SF for this transfer includes a plurality of conveyors (not shown) for transferring a tray (not shown) supporting the electrode stack M, and a direction changer for changing the transport direction of the tray (not shown). (not shown) and a transfer robot (not shown) for transferring the electrode stack M to a tray (not shown).

On the other hand, the control unit (not shown) according to this embodiment is a secondary battery stacking device (SC), an outer surface inspection device (SD), an overhang inspection device 100 for a secondary battery, a TAB device (TAB), a transport for inspection Electrically connected to the device 200 and the transfer device for delivery (SF), a stacking device for secondary batteries (SC), an outer surface inspection device (SD), an overhang inspection device for secondary batteries 100, a TAB device (TAB), Controls the operation of the transfer device 200 and the transfer device for delivery (SF) for inspection.

Hereinafter, the operation of the secondary battery manufacturing system according to the present embodiment will be described with reference to FIGS. 2 to 8 .

First, in the stacking device for secondary batteries (SC), the electrode stack M on which the stacking process is completed is transferred to the overhang inspection device 100 for secondary batteries through the supply transfer unit 210 .

Thereafter, the electrode loading unit 160 loads the electrode stack body M to the supply stage unit 141 . At this time, the electrode stacks M are stacked and disposed.

Next, the transfer unit 130 for the laminate transfers the electrode laminate (M) to each of the first jig unit 111 and the second jig unit 112 .

Thereafter, as shown in FIG. 10( a ), the electrode stack M clamped to the second jig unit 112 is imaged by the inspection imaging unit 120 and supported by the first jig unit 111 . The electrode stacked body M waits for inspection.

Thereafter, the first jig part 111 and the second jig part 112 are moved relative to the inspection imaging unit 120 and supported by the first jig part 111 as shown in FIG. The electrode stack M is imaged by the inspection imaging unit 120 . In this case, the transfer unit 130 for the laminate may transfer the electrode laminate M supported by the second jig unit 112 to the stage unit 150 for discharging.

Thereafter, the first jig unit 111 and the second jig unit 112 return to their original positions.

Next, the discharge stage unit 151 is moved toward the electrode unloading unit 170 .

Thereafter, the electrode unloading unit 170 unloads the electrode stack M loaded on the stage unit 151 for discharging and loads it on the discharging unit 220 .

Next, the electrode stack (M) determined to be normal as a result of the inspection is transferred to the TAB device (TAB) through the outer surface inspection device (SD) through the transfer device (SF).

As described above, the secondary battery manufacturing system according to the present embodiment includes a first jig part 111 and a second jig part 112 for clamping the electrode stack M, and includes the first jig part 111 and the second jig part 111 . 2 By providing a jig unit 110 for a laminate for moving the jig unit 112 in the first axial direction and an imaging unit 120 for inspection for imaging the electrode laminate M, manufacturing a secondary battery in-line During the process, it is possible to quickly and simply inspect the electrode stack (M) to detect overhangs of the electrodes to minimize the production of defective products and to prevent the delivery of defective products to increase quality reliability.

In addition, according to the present invention, since the first jig part 111 and the second jig part 112 are movable relative to the imaging unit 120 for inspection, the number of radiation emitting parts 121 can be reduced, and thus Accordingly, there is an advantage that can reduce manufacturing cost and maintenance cost.

Although the present embodiment has been described in detail with reference to the drawings above, the scope of the present embodiment is not limited to the drawings and description described above.

As such, the present invention is not limited to the described embodiments, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations belong to the claims of the present invention.

100: overhang inspection device for secondary battery 110: jig unit for laminate
111: first jig part 112: second jig part
113: Moving block unit for the first jig 114: Moving block unit for the second jig
116: moving driving unit for jig 120: imaging unit for inspection
130: transfer unit for a laminate 131: grip part
133: first axial movement for gripping 135: second axial movement for gripping
137: moving part in the third axis direction for holding 140: stage unit for supply
141: supply stage unit 142: supply stage moving unit
150: stage unit for discharging 151: stage unit for discharging
152: discharging stage moving unit 160: electrode loading unit
170: electrode unloading unit 200: transfer device for inspection
210: transfer unit for supply 220: transfer unit for discharge
M: electrode laminate

Claims (15)

a stage unit for supply having a stage for supply in which an electrode stack prepared by alternately stacking a cathode and an anode with a separator interposed therebetween;
a jig unit for a laminate having a first jig unit and a second jig unit for clamping the electrode laminate by receiving it, and moving the first jig unit and the second jig unit in a first axial direction;
an inspection imaging unit disposed adjacent to the jig unit for the laminate and configured to image the electrode laminate;
a stage unit for discharging disposed adjacent to the jig unit for the laminate and having a stage for discharging on which the electrode laminate imaged by the inspection imaging unit is mounted; and
It is disposed adjacent to the jig unit for the laminate, and transfers the electrode laminate from the stage unit for supply to the jig unit for the laminate and transfers the electrode laminate from the jig unit for the laminate to the stage unit for discharging. Overhang inspection device for secondary batteries. According to claim 1,
The jig unit for the laminate is,
a moving block unit for a first jig to which the first jig unit is coupled;
a moving block unit for a second jig to which the second jig unit is coupled;
a moving guide unit for a jig connected to the first moving block unit for the jig and the second moving block unit for the jig, and guiding the movement of the first moving block unit for the first jig and the second moving block unit for the jig; and
For a secondary battery connected to the first moving block unit for the jig and the second moving block unit for the jig, and including a moving driving unit for a jig for moving the first moving block unit for the jig and the second moving block unit for the jig overhang inspection device. According to claim 1,
The transfer unit for the laminate,
a gripper for gripping the electrode stack;
a first axial movement part for holding the grip part and moving the grip part in the first axial direction;
a second axial movement unit for gripping connected to the first axial movement unit for gripping, and configured to move the first axial movement portion for gripping in a second axial direction crossing the first axial direction; and
A gripping third axial movement unit connected to the first axial movement unit for gripping and coupled to the gripping portion, and configured to move the grip portion in a third axial direction intersecting the first and second axial directions Overhang inspection device for secondary batteries, including. According to claim 1,
The stage unit for supply,
An overhang inspection apparatus for a secondary battery that supports the stage for supply and includes a stage moving part for supply that moves the stage part for supply in the first axial direction. According to claim 1,
The stage unit for discharging,
and a discharging stage moving unit supporting the discharging stage and moving the discharging stage in the first axial direction. According to claim 1,
The overhang inspection apparatus for a secondary battery further comprising an electrode loading unit for loading the electrode stack to the stage for supply. According to claim 1,
Overhang inspection apparatus for a secondary battery further comprising an electrode unloading unit for unloading the electrode stacked body loaded on the stage for discharging (unloading). According to claim 1,
The jig unit for the laminate is provided in plurality and is an overhang inspection apparatus for a secondary battery, characterized in that it is arranged to be spaced apart from each other. a stacking device for a secondary battery that alternately stacks a negative electrode and a positive electrode with a separator interposed therebetween to produce an electrode stack;
an inspection transfer device for transferring the electrode stack stacked in the secondary battery stacking device; and
and an overhang inspection device for secondary batteries that receives and captures the electrode stack transferred by the transport device for inspection, and transfers the captured electrode stack to the transport device for inspection,
The overhang inspection device for the secondary battery,
a stage unit for supply having a stage for supply on which the electrode stack is loaded;
a jig unit for a laminate having a first jig unit and a second jig unit for clamping the electrode laminate by receiving it, and moving the first jig unit and the second jig unit in a first axial direction;
an inspection imaging unit disposed adjacent to the jig unit for the laminate and configured to image the electrode laminate;
a stage unit for discharging disposed adjacent to the jig unit for the laminate and having a stage for discharging on which the electrode laminate imaged by the inspection imaging unit is mounted; and
It is disposed adjacent to the jig unit for the laminate, and transfers the electrode laminate from the stage unit for supply to the jig unit for the laminate and transfers the electrode laminate from the jig unit for the laminate to the stage unit for discharging. secondary battery manufacturing system 10. The method of claim 9,
The jig unit for the laminate is,
a moving block unit for a first jig to which the first jig unit is coupled;
a moving block unit for a second jig to which the second jig unit is coupled;
a moving guide unit for a jig connected to the first moving block unit for the jig and the second moving block unit for the jig, and guiding the movement of the first moving block unit for the first jig and the second moving block unit for the jig; and
A secondary battery connected to the first moving block unit for a jig and the second moving block unit for a jig, and including a moving driving unit for a jig for moving the first moving block unit for the jig and the second moving block unit for the jig manufacturing system. 10. The method of claim 9,
The transfer unit for the laminate,
a gripper for gripping the electrode stack;
a first axial movement part for holding the grip part and moving the grip part in the first axial direction;
a second axial movement unit for gripping connected to the first axial movement unit for gripping, and configured to move the first axial movement portion for gripping in a second axial direction crossing the first axial direction; and
A gripping third axial movement unit connected to the first axial movement unit for gripping and coupled to the gripping portion, and configured to move the grip portion in a third axial direction intersecting the first and second axial directions A secondary battery manufacturing system comprising. 10. The method of claim 9,
The stage unit for supply,
and a supply stage moving part supporting the supply stage part and moving the supply stage part in the first axial direction. 10. The method of claim 9,
The stage unit for discharging,
and a discharging stage moving unit supporting the discharging stage and moving the discharging stage in the first axial direction. 10. The method of claim 9,
The secondary battery manufacturing system further comprising an electrode loading unit for loading the electrode stack transferred by the inspection transfer device to the supply stage unit. 10. The method of claim 9,
The secondary battery manufacturing system further comprising an electrode unloading unit for unloading the electrode stack loaded on the stage for discharging and transferring it to the transport device for inspection.

Images