NOVELTY - The power battery module has a power connection unit (407) which is fixed to a substrate (401) and connected with an electrode terminal. A power connection line (4071), formed by a first sheet-like conducting unit disposed on substrate, defines a first end connected with the power connection unit and a second end. A signal collection line (4021), formed by a second sheet-like conductive unit disposed on substrate, defines a first end connected with the power connection unit and a second end. A signal collection unit (402), disposed on substrate, is connected with signal collection line.    USE - Power battery module for use as power source of electric vehicle.    ADVANTAGE - Provides a power battery module which can freely expand a number of batteries and be adapted to different connection manners of the batteries according to an actual requirement since the single power collection and power connection assembly has a simple structure and various fastening manners. Eliminates the need for wire to perform signal transmission and power connection since the power connection line and the signal collection line are formed by sheet-like conductive unit on the substrate. Improves convenience and reliability since the signal collection and power connection assembly is easily manufactured and can be wildly used in different conditions, such that, when a new kind of signal is requested to be collected during usage of the battery, it is convenient to add a corresponding signal collection unit without adjusting the whole signal collection and power connection assembly. Allows the signal collection and power connection assembly to have a small size, light weight, and low cost while allowing for easy manufacture and assembly, and allowing for automatic production since the power connection line, the signal collection line, the power connection unit, and the signal collection unit are integrated on the substrate. Eliminates the need for the buffering structure since the signal collection and power connection assembly is relative flexible. Saves manufacturing and assembly costs by eliminating the need for the buffering structure.    DESCRIPTION OF DRAWING(S) - The drawing shows a partially enlarged schematic view of the signal collection and power connection assembly of the power battery module.    Substrate (401)    Signal collection unit (402)    Power connection unit (407)    Signal collection line (4021)    Power connection line (4071)