Lightweight composite material battery box body

Abstract

The invention discloses a lightweight composite material battery box. The lightweight composite material battery box comprises a lower box body and an upper cover; the upper cover is bolted with the lower box body; the upper cover is made of a carbon fiber material; the lower box body comprises a bottom plate; a front side wall and a rear side wall are respectively arranged at the front and rear ends of the top of the bottom plate; the left side and the right side of the top of the bottom plate are provided with a left side wall and a right side wall respectively. The first cross beam is fixedly arranged at the front end of the top of the bottom plate; three second cross beams which are distributed at intervals are arranged in the middle of the top of the bottom plate; the third cross beamis arranged at the rear end of the top of the bottom plate; the left and right ends of the rear side of the third cross beam are fixedly connected with the front side surface of the rear side wall through first longitudinal beams; the middle of the front side of the first cross beam is fixedly connected with the rear side face of the front side wall through three second longitudinal beams. The box body formed by compounding the aluminum profiles, the carbon fibers and the honeycomb aluminum plates has the advantages of safety, economy, impact resistance and light weight, so the development requirements of new energy automobiles can be met.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a lightweight composite material battery case. Background technique [0002] As the carrier of the new energy power battery, the battery system box is generally installed at the lower part of the car body, and is mainly used to protect the lithium battery from being damaged when it is impacted or squeezed by the outside world. [0003] For the traditional vehicle battery box, it is usually welded with low-carbon steel sheet metal, aluminum profiles and other materials, and then the surface is sprayed. Among them, the battery box made of steel is relatively heavy, the processing technology is complicated, and it is easy to be corroded; while the battery box made of aluminum profile is relatively light, but its carrying capacity is weak, and the energy density of its battery system is still high. The battery case accounts for a relatively large weight in the battery system. [...

AI Technical Summary

Problems solved by technology

Among them, the steel battery box is relatively heavy, the processing technology is complicated, and it is easy to be corroded; while the aluminum profile battery box is relatively light, but its carrying capacity is weak, and the energy density of its battery system is still high

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