Electrode plate mass detection method, coating method, apparatus, device, system, and medium

An electrode plate mass detection method, wherein the method comprises:

• controlling at least one surface density gauge to scan an electrode plate along a width direction of the electrode plate and create a plurality of radiation surfaces of different shapes on the electrode plate during the scanning of the electrode plate, wherein the at least one surface density gauge comprises a collimator, the collimator comprising a shield plate and a driving mechanism, wherein the electrode plate comprises a plurality of blank regions, at least one coating region arranged along a width direction of the electrode plate, and thinned regions, the at least one coating region and the blank regions are arranged alternately, along the width direction of the electrode plate, the thinned regions are located on two sides of the at least one coating region and between the blank region and the at least one coating region;
• controlling the driving mechanism to drive the shield plate to move so as to adjust the shapes of the plurality of radiation surfaces created by the at least one surface density gauge on the electrode plate, wherein, controlling the driving mechanism to drive the shield plate further comprises:
• during the scanning of the electrode plate by the surface density gauge, controlling the driving mechanism to drive the shield plate to move, in the thinned regions, so as to adjust the at least one surface density gauge to create a first radiation surface of the plurality of radiation surfaces in the blank region of the electrode plate and a second radiation surface of the plurality of radiation surfaces in the at least one coating region of the electrode plate, wherein in the width direction of the electrode plate, a width of the first radiation surface is less than a width of the blank region, and a width of the second radiation surface is less than a width of the at least one coating region;
• obtaining surface density information corresponding to the plurality of radiation surfaces;
• and
• determining mass information of the electrode plate based on the surface density information.