Battery Module

Provided is a battery module capable of suppressing failures in accurate detection of the state of battery cells due to the effects of unwanted radiation from the battery cells. A battery module includes a plurality of battery cells that are stacked and disposed and a wiring member to detect the state of the plurality of battery cells . In the wiring member , an insulating base material , a wiring layer disposed on one surface side of the base material and including a plurality of detection lines to detect the state of the plurality of battery cells , and a ground layer disposed in a position corresponding to at least the wiring layer , on the other surface side of the base material are stacked.