COATING DEVICE, AND COATING METHOD FOR NON-UNIFORM THICKNESS CURRENT COLLECTOR

Provided are a coating device and a coating method for a non-uniform thickness current collector. The coating device includes a thickness sensor, an offset correction controller, and an offset correction mechanism. The thickness sensor is configured to detect an abrupt thickness change point on the non-uniform thickness current collector and output an abrupt change point signal. The offset correction controller is configured to receive the abrupt change point signal, compare the received abrupt change point signal with a predetermined abrupt thickness change point signal, determine whether the non-uniform thickness current collector is offset and what an offset direction is, and transmit an offset correction signal. The offset correction mechanism is configured to receive the offset correction signal and perform an offset correction action in a direction opposite to the offset direction. This coating device uses the coating method and can accurately coat the coating areas.