Electrode surface inspection device
An electrode surface inspection device may include a transport unit configured to transport an electrode; a lighting configured to illuminate at least one side of the electrode; and a camera configured to capture a plurality of images including images of a plurality of adjacent regions along a longitudinal direction of the electrode on at least one side of the electrode, and configured to crop the images of the plurality of adjacent regions of the electrode to acquire images of the plurality of adjacent regions of the electrode.
1 . An electrode surface inspection device, comprising:
a transporter configured to transport an electrode in a longitudinal direction of the electrode;
a light source configured to illuminate at least one side of the electrode; and
a camera configured to capture a plurality of images including images of a plurality of adjacent regions along the longitudinal direction of the electrode on the at least one side of the electrode, and configured to crop the images of the plurality of adjacent regions of the electrode to acquire images of the plurality of adjacent regions of the electrode,
wherein:
the camera is configured to not capture an entire surface of the electrode as a single image;
the plurality of adjacent regions of the electrode are disposed sequentially along the longitudinal direction of the electrode; and
each of the plurality of adjacent regions of the electrode is captured as a divided image of the electrode, and
wherein:
each of the acquired images of the plurality of adjacent regions of the electrode is a gray scale image; and
a deviation of gray level between pixels is equal to or less than 5%, within the acquired images of the plurality of adjacent regions of the electrode.
2 . The electrode surface inspection device according to claim 1 , further comprising:
a mirror,
wherein when light irradiated from the light source is incident on the mirror, the incident light from the mirror reflects on the at least one side of the electrode, and
wherein the light is irradiated from the light source along the longitudinal direction of the electrode.
3 . The electrode surface inspection device according to claim 1 , further comprising:
a merger configured to form an image in which the acquired images of the plurality of adjacent regions of the electrode are joined sequentially.
4 . The electrode surface inspection device according to claim 1 ,
wherein the camera is an area scan camera.
5 . The electrode surface inspection device according to claim 1 ,
wherein the camera is configured to crop the captured images of the plurality of adjacent regions of the electrode with an adjustable region of interest function.
6 . The electrode surface inspection device according to claim 1 ,
wherein:
the light source includes a first light source and a second light source configured to illuminate a first side and a second side of the electrode, respectively; and
the camera includes a first camera configured to capture the images of the plurality of adjacent regions of the at least one side of the electrode along the longitudinal direction of the electrode, and a second camera configured to capture images of a plurality of adjacent regions of the other side opposite to the at least one side of the electrode along the longitudinal direction of the electrode.
7 . The electrode surface inspection device according to claim 2 ,
wherein:
the camera is disposed on the at least one side of the electrode;
the mirror is disposed obliquely between the electrode and the camera; and
the light source is disposed on the mirror in a region between the electrode and the camera.
8 . The electrode surface inspection device according to claim 1 ,
wherein the electrode includes an electrode sheet, an electrode tab disposed on the electrode sheet and having a region protruding from the electrode sheet, and an insulating member that covers a region of the electrode tab disposed on the electrode sheet.
9 . The electrode surface inspection device according to claim 8 ,
wherein the plurality of images captured by the camera includes images of an entire surface of the electrode, including the electrode sheet, the electrode tab, and the insulating member.
10 . The electrode surface inspection device according to claim 1 , further comprising:
a merger,
wherein the merger is configured to sequentially join the acquired images of the plurality of adjacent regions of the electrode to form a single image of the electrode.
11 . The electrode surface inspection device according to claim 1 , wherein:
the at least one side of the electrode faces the camera;
the light source does not face the at least one side of the electrode; and
light is irradiated from the light source along the longitudinal direction of the electrode.