Wire harness fixing assembly, battery pack and electric vehicle

The present invention belongs to the electric vehicle technical field and provides a wire harness fixing assembly, a battery pack and an electric vehicle. The wire harness fixing assembly includes a plurality of wire harness fixing structural components; each wire harness fixing structural component comprises a head end and a tail end which are respectively located at two ends of the wire harnessfixing structural component; the wire harness fixing structural component further comprises a first connecting portion disposed at the head end of the wire harness fixing structural component, and a second connecting portion disposed at the tail end of the structural component; and the first connecting portion of one wire harness fixing structural component can be connected with the second connecting portion of another wire harness fixing structural component, so that a wire harness fixing assembly of a corresponding length can be formed through splicing. Wire harness fixing assemblies of different lengths can be spli