Detection device and detection method for detecting appearance of battery module

A detection device for detecting the appearance of a battery module, wherein a battery module has a longitudinal direction, a transverse direction perpendicular to the longitudinal direction, and a depth direction perpendicular to the longitudinal direction and perpendicular to the transverse direction, and comprises a first end surface and a second end surface opposite to each other in the longitudinal direction, a first side surface and a second side surface opposite to each other in the depth direction, and a third side surface and a fourth side surface opposite to each other in the transverse direction,

• the detection device comprises:
• a lifting mechanism, wherein the lifting mechanism is capable of moving the battery module in a vertical direction, so that the battery module is capable of staying at a height different from an initial height;
• a flipping mechanism, wherein the flipping mechanism is capable of flipping the battery module;
• a first image acquisition mechanism, wherein the first image acquisition mechanism comprises a first end surface image acquisition apparatus configured to acquire an image of the first end surface of the battery module and a second end surface image acquisition apparatus configured to acquire an image of the second end surface of the battery module;
• a second image acquisition mechanism, wherein the second image acquisition mechanism comprises a second image acquisition apparatus configured to acquire images of the first side surface and the second side surface;
• a third image acquisition mechanism, wherein the third image acquisition mechanism comprises a third image acquisition apparatus configured to acquire images of the third side surface and the fourth side surface;
• wherein the lifting mechanism is capable of causing the battery module to stay at at least two heights different from the initial height, at a first height, the first end surface image acquisition apparatus acquires the image of the first end surface, and the second end surface image acquisition apparatus acquires the image of the second end surface;
• at a second height, the second image acquisition apparatus acquires the images of the first side surface and the second side surface, and the third image acquisition apparatus acquires the images of the third side surface and the fourth side surface;
• and
• wherein the flipping mechanism is capable of flipping the battery module, so that the first side surface or the second side surface of the battery module and the third side surface or the fourth side surface of the battery module face the second image acquisition mechanism and the third image acquisition mechanism, respectively.