Auxiliary frame mounting structure and electric automobile

Abstract

The invention relates to an auxiliary frame mounting structure and an electric automobile. The auxiliary frame installation structure comprises an installation support and a connecting support which are connected with the inner side of the rear floor edge beam rear section, the installation support is further connected with the connecting support, and the installation support, the connecting support and the rear floor edge beam rear section jointly form a closed cavity from the upper side to the lower side to serve as an installation point for installing an auxiliary frame. A mounting part is arranged in the cavity in a penetrating manner, and the mounting part is used for mounting an auxiliary frame; and a reinforcing plate is arranged in the cavity to reinforce the mounting point. The invention further provides an electric automobile which comprises the auxiliary frame mounting structure. The auxiliary frame can be installed under the condition that the requirements of an electric drive and a chassis of an electric automobile are met, and a high-dynamic-stiffness installation structure can be provided for the chassis.

Description

technical field [0001] The invention relates to the technical field of automobile bodies, in particular to a sub-frame mounting structure and an electric vehicle. Background technique [0002] Lightweight technology is an important technical means to realize energy saving and emission reduction of automobiles. With the rapid development of pure electric vehicles, in order to achieve longer cruising range of electric vehicles, lightweighting is one of the key objects of its research. At the same time, since pure electric vehicles have no engine noise to cover, electric vehicles have higher requirements for NVH performance, which leads to higher requirements for electric vehicle body-related negative jog stiffness. [0003] The traditional subframe is generally directly installed on the mounting stud in the center of the rear floor side beam. The subframe has a relatively simple installation structure and a smooth force transmission path. However, for electric vehicles, due t...

AI Technical Summary

Problems solved by technology

However, for electric vehicles, due to the influence of the movement envelope of the chassis swing arm, the height difference between the front and rear of the middle section of the rear floor side beam is larger than that of other models, which is not conducive to the transmission and dispersion of the force of the rear subframe

At the same time, due to the height restriction of the mounting point of the chassis sub-frame and the limitation of the positioning hole of the production line skid, the mounting point of the sub-frame cannot be located at the center of the rear section of the rear floor side beam

Therefore, under the above-mentioned harsh conditions, the traditional sub-frame installation structure can no longer meet the installation of the sub-frame of electric vehicles, and it is also difficult to meet the requirements of electric vehicles for NVH performance and lightweight

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