Apparatus for inspecting stacking of electrodes of secondary battery and inspection method thereof

1 . An inspection method for an apparatus for inspecting stacking of electrodes of a secondary battery, the method, comprising:

forming a first stacked body, which comprises:

allowing a stacking main body to rotate in a first direction of a rotary shaft to stack a first separator supplied from a separator supply device on a stacking table of the stacking main body;

stacking a first electrode plate on the first separator by a stacking jig;

allowing the stacking main body to rotate in a second direction of the rotary shaft to stack a second separator on the first electrode plate; and stacking a second electrode plate on the second separator by the stacking jig, and

performing a first inspection process, which comprises: coupling a fixing jig having an open hole configured to fix the first stacked body in a stacking direction on the first stacked body;

emitting, by a lighting device coupled to the stacking table that rotates together with the stacking main body, light having a path passing through the open hole of the fixing jig and through the first stacked body;

capturing, by a capturing unit, an image of the light that has passed through the open hole of the fixing jig and the first stacked body,

wherein the open hole is opened toward an edge area of the first stacked body,

wherein the forming the first stacked body and the performing the first inspection process are repeated a plurality of times, and the first inspection process is performed on a previously formed first stacked body among a plurality of first stacked bodies, and

wherein the emitting comprises:

emitting light toward the first stacked body that is being stacked in real time by the lighting device coupled to the stacking table while the stacking table rotates in a first direction of the rotary shaft and a second direction of the rotary shaft; and

adjusting, in real time during a repeated stacking process of the first stacked body, an emission angle of the light of the lighting device in an opening direction of the open hole of the fixing jig.

2 . The method of claim 1 , further comprising:

allowing a center of the rotary shaft to move toward an upper part and a lower part in the stacking direction of the first stacked body by a guide shaft as the stacking main body reciprocates in the first or second direction of the rotary shaft.

3 . An apparatus for inspecting stacking of electrodes of a secondary battery, the apparatus, comprising:

a stacking main body in which a separator supplied by a separator supply device is stacked on one side of a stacking table;

a fixing jig coupled to an electrode plate to fix one side of the electrode plate stacked on the separator by a stacking jig; and

a lighting device coupled to the stacking table that emits light at a determined angle in a direction that penetrates the separator and the electrode plate so that a capturing unit can capture an image of the emitted light,

wherein the stacking main body comprises a rotary shaft and is configured to allow the separator to be stacked on the stacking table in a zigzag direction as reciprocating in a direction from a first side of the rotary shaft to a second side of the rotary shaft,

wherein the stacking main body is configured to allow a first electrode plate to be stacked on a first separator in a first direction of the rotary shaft by the stacking jig, and is further configured to allow a second electrode plate to be stacked on a second separator in a second direction of the rotary shaft by the stacking jig,

wherein the stacking main body is configured to stack a plurality of first stacked bodies by a plurality of reciprocating movements in the direction from the first side of the rotary shaft to the second side of the rotary shaft, and

wherein the lighting device is configured to rotate together with the stacking table and to emit light, in real time, toward a first stacked body that is being stacked while the stacking table rotates in the first direction of the rotary shaft and the second direction of the rotary shaft, and is further configured to adjust, in real time during a repeated stacking process of the first stacked body, an emission angle of the light in an opening direction of an open hole of the fixing jig.

4 . The apparatus of claim 3 , wherein the stacking table has a receiving groove formed therein to receive the lighting device, and

wherein the receiving groove is open so as to cover a radius of an acute angle range included in the determined angle at which the light of the lighting device is emitted.

5 . The apparatus of claim 3 , wherein the stacking main body comprises a guide shaft configured to be operated to allow the stacking main body to move vertically in a direction perpendicular to a first surface of the stacking main body.

6 . The apparatus of claim 3 , wherein the lighting device comprises a lighting unit and an angle adjusting unit,

wherein the lighting unit is coupled to the angle adjusting unit to emit the light to pass the first stacked body,

wherein one end of the angle adjusting unit is coupled to the lighting unit and the other end is installed in a receiving groove in the stack table to adjust an emission range within an acute angle included in the determined angle of light emitted by the lighting unit.

7 . The apparatus of claim 6 , wherein the open hole of the fixing jig is open toward one edge of the first stacked body.