Abstract: A vehicle body structure includes: a battery case that is disposed below a floor panel of a vehicle body and houses a battery; and a case-mounting frame that connects the battery case to a side sill provided on a side of the battery case in a vehicle width direction to support the battery case. The case-mounting frame includes a lower frame that straddles between the side sill and the battery case, and an upper frame that rises from the lower frame, supports the battery case, and is disposed side by side with the battery case in the vehicle width direction. The lower frame includes a fragile portion that is provided at a position located below the upper frame and is more fragile than another position other than the first position.

Abstract: A bottom structure of a vehicle is capable of preventing a floor cross member from interfering with a battery after being deformed. The bottom structure of the vehicle includes: a floor panel; a battery which is disposed below the floor panel in a vehicle up-down direction; a side sill which is disposed on an outer side of the floor panel in a vehicle width direction and extends along a vehicle front-rear direction; and a floor cross member which is connected to the side sill and extends toward an inner side in the vehicle width direction. The floor cross member includes a fragile portion, and the fragile portion is disposed further outside than the battery in the vehicle width direction and on a lower side of the floor cross member in the vehicle up-down direction.

Abstract: A battery pack including a battery and a battery case is attached under a floor of a vehicle. The battery case includes a bottom plate and side frames. Each side frame includes a protection region, a vertical rib and a deformation region arranged in this order from inside to outside. The deformation region is provided with a first plate having a first buckling point and connected to a first portion of the vertical rib, a second plate having a second buckling point at a same position as the first buckling point in a vertical direction and connected to a second portion of the vertical rib, and a third plate connected to the first buckling point and a third portion of the vertical rib and located between the first and second portions. A length between the first and third portions is shorter than a length between the second and third portions.

Abstract: A battery pack is mounted on a vehicle. The battery pack has a battery module including battery cells laminated in a first direction of a horizontal direction, and a load-bearing member extending in a second direction orthogonal to the first direction of the horizontal direction, and a battery case accommodating the battery module. The battery case includes a base plate, a frame member joined to an outer edge of the base plate and forming an outer frame of the battery case, a first fixing portion provided on the frame member at a position overlapped with the load-bearing member when viewed from the second direction and fixing a first part of the battery module to the frame member, and a second fixing portion provided on the frame member at a position different from the overlapped position and fixing a second part of the battery module to the frame member.

Abstract: A battery pack is mounted on a vehicle. The battery pack has a battery, and a battery case accommodating the battery. The battery case includes a base plate on which the battery is placed, a frame member joined to an outer edge of the base plate, and a cover covering the battery and attached to the frame member via a sealing member. The frame member includes a protection region located on an inner side with respect to the sealing member, and a deformation region located on an outer side with respect to the sealing member. The base plate is joined to the frame member in the protection region, and a tip end of the base plate extends to at least the deformation region when viewed in a cross section.

Abstract: A vehicle body lower structure includes a battery case, a side sill, and a case-mounting frame. The case-mounting frame has a frame main body portion and a battery case reception flange. The battery case reception flange extends to an inward side in a vehicle width direction from the frame main body portion and is joined to a lower surface of a bottom wall of the battery case. A battery support frame extending in a vehicle body forward-rearward direction and supporting a battery is fixed to the bottom wall of the battery case. A recessed portion protruding downward is provided between a joint portion with respect to the battery case reception flange and a joint portion with respect to the battery support frame in the bottom wall of the battery case.

Abstract: A vehicle body lower part structure includes: a side frame that connects a battery pack which is arranged below a floor panel of a vehicle to a side sill which is provided at a further outer position in a vehicle width direction than the battery pack; a lower cross member that is provided within the battery pack, is arranged between batteries, and extends in the vehicle width direction; and a connection portion that is provided within the battery pack and connects the lower cross member to the floor panel. The connection portion is provided at a further outer position in the vehicle width direction than the batteries.

Abstract: A vehicle body lower part structure includes: a side frame that connects a side sill to a battery pack that is arranged below a floor portion; and a battery frame that supports a battery within the battery pack. A first joint flange that is joined to a case bottom portion of the side frame is arranged such that a second joint flange that is joined to the case bottom portion of the battery frame overlaps an upper side in an upward-downward direction of the first joint flange.

Abstract: A door beam structure for a vehicle side door includes a door beam having a hollow cross section, wherein the door beam includes: an outside portion forming a hollow flange of the door beam arranged to face a door skin, and an inside portion forming a hollow door beam body of the door beam.

Abstract: Aside door structure for a vehicle includes a door beam that has hollow sections which are open at two ends in a longitudinal direction, and a hinge reinforcement member including a bent plate body in a crank shape that is joined to one of a front end and a rear end of the door beam. The hinge reinforcement member forms the crank shape by integrally forming a middle portion that closes an opening in the one of the front end and the rear end of the door beam and is joined to a stepped vertical wall of an inner panel of a side door, an outer end portion that is joined to a stepped outer side wall of the inner panel and an outer wall of the door beam, and an inner end portion that is joined to an inner wall of the door beam.

Abstract: The disclosure provides a vehicle body capable of suppressing the occurrence of cracks in a center pillar at the time of a side collision. A center pillar stiffener forms a hollow structure with a closed cross section by including a side wall which faces the outer surface of a pillar inner, a front wall which is formed by bending from a front end of the side wall to form a first ridge with the side wall and which is joined to the outer surface of the pillar inner, and a rear wall which is formed by bending from a rear end of the side wall to form a second ridge with the side wall and which is joined to the outer surface of the pillar inner. The pillar stiffener is provided with a bead recessed toward the pillar inner and orthogonal to the first and second ridges.

Abstract: Aside door structure for a vehicle includes a door beam that has hollow sections which are open at two ends in a longitudinal direction, and a hinge reinforcement member including a bent plate body in a crank shape that is joined to one of a front end and a rear end of the door beam. The hinge reinforcement member forms the crank shape by integrally forming a middle portion that closes an opening in the one of the front end and the rear end of the door beam and is joined to a stepped vertical wall of an inner panel of a side door, an outer end portion that is joined to a stepped outer side wall of the inner panel and an outer wall of the door beam, and an inner end portion that is joined to an inner wall of the door beam.

Abstract: A door beam structure for a vehicle side door includes a door beam having a hollow cross section, wherein the door beam includes: an outside portion forming a hollow flange of the door beam arranged to face a door skin, and an inside portion forming a hollow door beam body of the door beam.

Abstract: A vehicle body lower structure includes a battery case, a side sill, and a case-mounting frame. The case-mounting frame has a frame main body portion and a battery case reception flange. The battery case reception flange extends to an inward side in a vehicle width direction from the frame main body portion and is joined to a lower surface of a bottom wall of the battery case. A battery support frame extending in a vehicle body forward-rearward direction and supporting a battery is fixed to the bottom wall of the battery case. A recessed portion protruding downward is provided between a joint portion with respect to the battery case reception flange and a joint portion with respect to the battery support frame in the bottom wall of the battery case.

Abstract: A vehicle body structure includes: a battery case that is disposed below a floor panel of a vehicle body and houses a battery; and a case-mounting frame that connects the battery case to a side sill provided on a side of the battery case in a vehicle width direction to support the battery case. The case-mounting frame includes a lower frame that straddles between the side sill and the battery case, and an upper frame that rises from the lower frame, supports the battery case, and is disposed side by side with the battery case in the vehicle width direction. The lower frame includes a fragile portion that is provided at a position located below the upper frame and is more fragile than another position other than the first position.

Abstract: The disclosure provides a vehicle body capable of suppressing the occurrence of cracks in a center pillar at the time of a side collision. A center pillar stiffener forms a hollow structure with a closed cross section by including a side wall which faces the outer surface of a pillar inner, a front wall which is formed by bending from a front end of the side wall to form a first ridge with the side wall and which is joined to the outer surface of the pillar inner, and a rear wall which is formed by bending from a rear end of the side wall to form a second ridge with the side wall and which is joined to the outer surface of the pillar inner. The pillar stiffener is provided with a bead recessed toward the pillar inner and orthogonal to the first and second ridges.