A label attachment apparatus for attaching a label to a battery case, comprising: a label support on which the label is placed; an alignment check part configured to check whether an alignment state of the label is normal or defective; and a label aligning part configured to align the label when the alignment state determined by the alignment check part is defective, wherein the alignment check part consists of: a servo robot configured to move the label support, on which the label is placed, to a corresponding position of the battery, the label being attachable to the battery at the corresponding position of the battery; two sensors configured to sense the alignment state of the label ; and an alignment determining part configured to determine, according to a combination of signals detected by the two sensors , whether the alignment state is normal or defective, wherein the two sensors comprise: a first sensor disposed to be spaced apart by a preset distance to the left with respect to the servo robot ; and a second sensor disposed to be spaced apart a preset distance to the right with respect to the servo robot , wherein the first sensor and the second sensor are disposed side by side on a straight line perpendicular to a moving direction of the servo robot . a label support on which the label is placed; an alignment check part configured to check whether an alignment state of the label is normal or defective; and a label aligning part configured to align the label when the alignment state determined by the alignment check part is defective, wherein the alignment check part consists of: a servo robot configured to move the label support, on which the label is placed, to a corresponding position of the battery, the label being attachable to the battery at the corresponding position of the battery; two sensors configured to sense the alignment state of the label ; and an alignment determining part configured to determine, according to a combination of signals detected by the two sensors , whether the alignment state is normal or defective, wherein the two sensors comprise: a first sensor disposed to be spaced apart by a preset distance to the left with respect to the servo robot ; and a second sensor disposed to be spaced apart a preset distance to the right with respect to the servo robot , wherein the first sensor and the second sensor are disposed side by side on a straight line perpendicular to a moving direction of the servo robot . a servo robot configured to move the label support, on which the label is placed, to a corresponding position of the battery, the label being attachable to the battery at the corresponding position of the battery; two sensors configured to sense the alignment state of the label ; and an alignment determining part configured to determine, according to a combination of signals detected by the two sensors , whether the alignment state is normal or defective, wherein the two sensors comprise: a first sensor disposed to be spaced apart by a preset distance to the left with respect to the servo robot ; and a second sensor disposed to be spaced apart a preset distance to the right with respect to the servo robot , wherein the first sensor and the second sensor are disposed side by side on a straight line perpendicular to a moving direction of the servo robot . a first sensor disposed to be spaced apart by a preset distance to the left with respect to the servo robot ; and a second sensor disposed to be spaced apart a preset distance to the right with respect to the servo robot , wherein the first sensor and the second sensor are disposed side by side on a straight line perpendicular to a moving direction of the servo robot . <EOS>