The invention discloses an electric automobile and a lower automobile body of the electric automobile. The lower automobile body comprises two longitudinal beams, a left beam and a right beam, the battery pack comprises two longitudinal beams and a plurality of cross beams, the plurality of cross beams are sequentially arranged between the two longitudinal beams at intervals, the cross beams and the longitudinal beams are integrally formed, the two longitudinal beams and the plurality of cross beams form a battery box body, and a space defined by the battery box body is used for accommodating a battery module or a battery cell. The longitudinal beams of the battery box body and the longitudinal beams of the lower vehicle body are shared, the structural redundancy of the battery box body and the lower vehicle body is eliminated, the weight is reduced by 5-8%, meanwhile, the problem that the design technology of the torsional rigidity of the vehicle body is excessive due to the structural redundancy is avoided, and the design excess value of the torsional rigidity of the vehicle body is reduced by 20-30%.
本发明公布一种电动汽车及其车身下车体,车身下车体包括:两个左右对称设置的纵梁;以及多个横梁,多个所述横梁依次间隔设在两个所述纵梁之间,所述横梁与所述纵梁一体成型,两个所述纵梁与多个所述横梁形成电池箱体,所述电池箱体围成的空间用于容置电池模组或电芯。电池箱体的纵梁与车身下车体的纵梁共用,消除了电池箱体与车身下车体的结构冗余,减重5‑8%,同时规避了因结构冗余导致车身扭转刚度设计技术过剩的问题,降低20‑30%的车身扭转刚度设计过剩值。
Electric automobile and lower automobile body thereof
一种电动汽车及其车身下车体
2024-03-05
Patent
Electronic Resource
Chinese
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