Vehicle battery case

A battery case for a vehicle comprising:

• a lower panel;
• a plurality of transverse members disposed on the lower panel to increase transverse rigidity;
• at least one longitudinal member disposed on the lower panel to increase longitudinal rigidity, wherein the transverse members and the longitudinal member define a battery accommodation space therebetween;
• a sidewall member attached to an upper surface of the lower panel along an edge of the lower panel;
• an auxiliary transverse member disposed at a position spaced apart from the battery accommodation space by a predetermined distance toward a rear end of the vehicle;
• and
• at least two auxiliary longitudinal members formed between the battery accommodation space and the auxiliary transverse member and two other auxiliary longitudinal members formed between the battery accommodation space and the sidewall member,
• wherein the longitudinal member extends across the transverse members,
• wherein each of the auxiliary longitudinal members has a first end portion and a second end portion, the first end portion being connected to the battery accommodation space, and the second end portion of the at least two auxiliary longitudinal members being connected to the auxiliary transverse member and the second end portion of the two other auxiliary longitudinal members being connected to the sidewall member, and
• wherein the auxiliary longitudinal members and the auxiliary transverse member are disposed in the sidewall member.