Surface profile tolerance detection device

The invention relates to the field of batteries, and discloses a surface profile tolerance detection device which is used for detecting the surface profile tolerance of a battery box body, the surface profile tolerance detection device comprises a base, a first guide rail assembly, a second guide rail assembly, a detection assembly and a driving assembly, the base is used for installing the battery box body, and the first guide rail assembly is arranged on the base and comprises a first guide rail; the second guide rail assembly is arranged on the first guide rail assembly and can move in the first direction, the first guide rail assembly comprises a second guide rail, the detection assembly is arranged on the second guide rail assembly and can move in the second direction, the driving assembly is used for driving the battery box to move in the third direction, and the third direction is perpendicular to the first direction and the second direction. In the technical scheme of the embodiment of the invention, the detection assembly can perform comprehensive coverage detection on the profile tolerance of the surfaces of the battery box body in the first direction and the second direction, so that the detection convenience can be improved, the detection efficiency can be improved, the detection range can be enlarged, and the detection accuracy can be improved.