A first body cross-member is disposed on body mounts and fixed to the body mounts through outer brackets and mount bolts that are fastening members. A battery and a cooling blower that is a battery accessory provided on an outer side of the battery in a vehicle width direction are installed on a vehicle body, between a pair of rockers. The rockers have a closed cross-sectional structure, and a brace that is a reinforcing member is housed in a battery flanking portion of each rocker that is a portion corresponding to the cooling blower in position in a vehicle front-rear direction.