Abstract: An electrical connection assembly includes an outer conductive shell and an inner conductive body. The outer conductive shell has an annular wall with an upper periphery and a lower periphery axially opposite each other, an elastic part connected to the upper periphery, and a connection part connected to the lower periphery. The inner conductive body is installed in the outer conductive shell and is axially clamped between the elastic part and the connection part. An outer diameter of the inner conductive body is smaller than an inner diameter of the outer conductive shell. The inner conductive body floats axially and radially relative to the outer conductive shell and maintains electrical contact with the outer conductive shell.