Dimension detection apparatus and detection method, and stacking device

A dimension detection method, comprising:

• an image shooting step:
• shooting images of four corner regions of a corresponding second electrode plate in a composite electrode plate by using four shooting components in each of two shooting assemblies, respectively, wherein the composite electrode plate comprises a plurality of first electrode plates, a plurality of second electrode plates, and two insulators;
• the plurality of first electrode plates are sandwiched between the two insulators and arranged continuously in parallel along an extension direction of the insulators;
• the plurality of second electrode plates are arranged alternately on outer sides of the two insulators along the extension direction of the insulators, and correspond one-to-one to the plurality of first electrode plates;
• the two shooting assemblies are disposed on two sides of the composite electrode plate respectively along a thickness direction of the composite electrode plate, and configured to photograph one of the plurality of second electrode plates on a first outer side of the outer sides of the two insulators, and another one of the plurality of second electrode plates on a second outer side of the outer sides of the two insulators that is closest to the one of the plurality of the second electrode plates on the first outer side, respectively, the first outer side being opposite to the second outer side;
• and the two shooting assemblies are arranged in a staggered manner along an extension direction of the composite electrode plate, and on a plane perpendicular to the thickness direction, a projection of the four shooting components of one of the two shooting assemblies and a projection of the four shooting components of another one of the two shooting assemblies do not overlap with each other;
• and
• a dimension calculation step:
• obtaining dimensional parameters of the composite electrode plate based on the captured images.

A dimension detection apparatus, configured to detect a composite electrode plate, wherein the composite electrode plate comprises a plurality of first electrode plates, a plurality of second electrode plates, and two insulators;

• the first electrode plates are of an opposite polarity to the second electrode plates;
• the plurality of first electrode plates are sandwiched between the two insulators and arranged continuously in parallel along an extension direction of the insulators;
• the plurality of second electrode plates are arranged alternately on outer sides of the two insulators along the extension direction of the insulators, and correspond one-to-one to the plurality of first electrode plates;
• and the dimension detection apparatus comprises:
• two shooting assemblies, disposed on two sides of the composite electrode plate respectively along a thickness direction of the composite electrode plate, and configured to photograph one of the plurality of second electrode plates on a first outer side of the outer sides of the two insulators, and another one of the plurality of second electrode plates on a second outer side of the outer sides of the two insulators that is closest to the one of the plurality of the second electrode plates on the first outer side, respectively, the first outer side being opposite to the second outer side, wherein each of the shooting assemblies comprises four shooting components configured to shoot images of four corner regions of one of the second electrode plates respectively;
• a controller, communicatively connected to the two shooting assemblies, wherein the controller is configured to obtain dimensional parameters of the composite electrode plate based on the captured images;
• and
• two light source groups disposed corresponding to the two shooting assemblies, respectively, wherein each of the light source groups comprises a first light source and a second light source of different luminous colors, the first light source and the second light source are arranged on two sides of the composite electrode plate along the thickness direction, respectively, the second light source comprises a surface light source and a line light source, a luminosity of the line light source is greater than a luminosity of the surface light source, and the line light source is disposed opposite to the first light source.