BATTERY FRAME STRUCTURE

A battery frame structure includes: right and left first skeleton members extending in a front-rear direction on both sides of a battery in a width direction, having a closed cross-sectional shape orthogonal to a longitudinal direction, and including a partition wall that separates an upper space and a lower space in a up-down direction; front and rear second skeleton members extending in the width direction on both sides of the battery in the front-rear direction, having a closed cross-sectional shape orthogonal to a longitudinal direction, and disposed on a vehicle front side or a vehicle rear side of the battery to be joined to a vehicle body structure; and corner retainers each including a first piece and a second piece, and fixed with the first piece put into the lower space and with the second piece put into an end portion of the second skeleton members in the longitudinal direction.