Positioning clamp and positioning method of battery box tray

The invention relates to the technical field of tool fixtures, and discloses a positioning fixture and a positioning method of a battery box tray, the positioning fixture comprises: a mounting seat on which a positioning structure for positioning a product is arranged; the first driving part is arranged on the mounting seat and can drive the pressing mechanism to do lifting motion on the mounting seat; the pressing mechanism comprises a second driving part, a mounting sleeve and a plurality of pressing blocks, the pressing blocks are movably arranged on the mounting sleeve, the mounting sleeve is provided with an unfolding position and a folding position, and the second driving part can drive the pressing blocks to be switched between the unfolding position and the folding position; when the product is positioned and pressed on the positioning and pressing device, the mounting sleeve is arranged in the through hole in a penetrating mode, the pressing block is located at the unfolding position, and the product