A diaphragm detection method, comprising: acquiring a target image of an electrode plate to be detected , wherein the electrode plate to be detected comprises an anode electrode plate and diaphragms respectively stacked on both sides of the anode electrode plate ; performing image processing on the target image to determine a target image region in the target image ; and performing diaphragm misalignment detection on the electrode plate to be detected based on the target image region ; characterized in that the performing diaphragm misalignment detection on the electrode plate to be detected based on the target image region comprises: acquiring a number of diaphragm image sub-regions in the target image region; determining a diaphragm misalignment result of the electrode plate to be detected based on the number of diaphragm image sub-regions in the target image region, wherein the diaphragm misalignment result is configured to indicate whether the diaphragms of the electrode plate to be detected are misaligned; wherein the acquiring a number of diaphragm image sub-regions in the target image region comprises: performing grayscale image segmentation processing on the target image region to obtain a number N of diaphragm image sub-regions with different grayscales, where N is a positive integer, wherein N is the number of diaphragm image sub-regions in the target image. acquiring a target image of an electrode plate to be detected , wherein the electrode plate to be detected comprises an anode electrode plate and diaphragms respectively stacked on both sides of the anode electrode plate ; performing image processing on the target image to determine a target image region in the target image ; and performing diaphragm misalignment detection on the electrode plate to be detected based on the target image region ; characterized in that the performing diaphragm misalignment detection on the electrode plate to be detected based on the target image region comprises: acquiring a number of diaphragm image sub-regions in the target image region; determining a diaphragm misalignment result of the electrode plate to be detected based on the number of diaphragm image sub-regions in the target image region, wherein the diaphragm misalignment result is configured to indicate whether the diaphragms of the electrode plate to be detected are misaligned; wherein the acquiring a number of diaphragm image sub-regions in the target image region comprises: performing grayscale image segmentation processing on the target image region to obtain a number N of diaphragm image sub-regions with different grayscales, where N is a positive integer, wherein N is the number of diaphragm image sub-regions in the target image. acquiring a number of diaphragm image sub-regions in the target image region; determining a diaphragm misalignment result of the electrode plate to be detected based on the number of diaphragm image sub-regions in the target image region, wherein the diaphragm misalignment result is configured to indicate whether the diaphragms of the electrode plate to be detected are misaligned; wherein the acquiring a number of diaphragm image sub-regions in the target image region comprises: performing grayscale image segmentation processing on the target image region to obtain a number N of diaphragm image sub-regions with different grayscales, where N is a positive integer, wherein N is the number of diaphragm image sub-regions in the target image. performing grayscale image segmentation processing on the target image region to obtain a number N of diaphragm image sub-regions with different grayscales, where N is a positive integer, wherein N is the number of diaphragm image sub-regions in the target image. <EOS>