US Patent 11171380 Binding member, and battery module

A binding member includes a body part extending in stacking direction X of batteries, a supporting part extending in stacking direction X and projecting from the body part, the supporting part supporting a battery stack, and a plurality of pressing parts arranged to have a predetermined interval from the supporting part, the plurality of pressing parts being arranged in the stacking direction and projected from the body part to press the battery stack toward the supporting part. When the body part is divided into two regions that are a supporting part side region and a pressing part side region, a rigidity in the supporting part side region is smaller than a rigidity in the pressing part side region.