Electric automobile body frame bottom structure

Abstract

The invention discloses an electric automobile body frame bottom structure. The electric automobile body frame bottom structure comprises an engine compartment assembly (1), a front floor assembly (2)and a rear floor assembly (3) which are arranged in sequence; the front floor assembly (2) comprises a front floor (45), a longitudinal floor central passage cavity (43), two central passage longitudinal beams (25), a power battery (44), two front floor longitudinal beams (24) and two threshold beams (23), wherein the longitudinal floor central passage cavity (43) is formed in the center of the floor; the two central passage longitudinal beams (25) are accommodated in the longitudinal floor central passage cavity (43) and symmetrically arranged on the two sides of a center axis of the longitudinal floor central passage cavity (43); the power battery (44) is arranged under the longitudinal floor central passage cavity (43); and the two front floor longitudinal beams (24) and the two threshold beams (23) are symmetrically arranged on the two sides of the power battery (44) and arranged in sequence from inside to outside. According to the electric automobile body frame bottom structure,the placing space demand of the large-duration power battery is satisfied, and meanwhile, the collision safety performance and continuous integrity of the automobile body frame bottom structure are also taken into account.

Description

technical field [0001] The invention relates to the technical field related to electric vehicles, in particular to an electric vehicle body frame bottom structure. Background technique [0002] At present, major automobile manufacturers follow the current trend of international technological development and vigorously develop electric vehicles, because electric vehicles are environmentally friendly and low in energy consumption. They are the best transportation products for environmental protection and air pollution purification. The ecological environment makes them physically and mentally healthy and has a beautiful living environment. The development of the electric vehicle industry just adapts to this trend, and it is a tool for sustainable social development. [0003] As a new way of travel for the public, electric vehicles have also greatly increased their acceptance. At present, the cruising range and collision safety of electric vehicles are the most concerned issu...

AI Technical Summary

Problems solved by technology

Especially for the power battery with long battery life, under the requirement of ensuring the ground clearance 41' between the power battery 44' and the ground 42', the space occupied by the power battery is bound to occupy 2' of the front floor assembly in the horizontal space and vertical direction. The cross-sectional size of the lower front floor longitudinal beam 24' and the middle channel longitudinal beam 25' has a great impact on the stability and safety of the current vehicle structure

If the cross-section of the structural parts is not changed, the space of the power battery will be occupied, resulting in a decrease in power and affecting battery life

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