Hybrid laminate structure of new energy automobile battery shell and preparation method

Abstract

The invention discloses a hybrid laminate structure of a new energy automobile battery shell and a preparation method thereof, based on the characteristics of a fiber-metal hybrid laminate structure, a hybrid laminate structure of an upper cover of the battery shell and a hybrid laminate structure of a box bottom are designed, and the mass of the battery shell is reduced. Preparation-forming integration of the battery pack is completed through a hot mold pressing process, and one-time forming of a complex structure in the shell can be achieved. While the development requirements of light weight and high strength of the battery shell are met, an integrated forming technology is adopted, the welding and riveting times and the processing procedures are reduced, and the integrity and the production efficiency of the battery shell are greatly improved.

Description

technical field [0001] The invention relates to the technical field of preparation and processing of battery shells for new energy vehicles, in particular to a hybrid laminate structure and a preparation method for battery shells of new energy vehicles. Background technique [0002] With the non-renewable consumption of traditional petrochemical energy and the sharp increase in the number of automobiles, it has promoted the development of society and economy and the improvement of human living standards, but it has also caused human beings to face severe energy shortages and environmental pollution problems. More and more countries Encourage the development of new energy vehicles, which have become the main direction of the future development of automobiles. As the carrier of the battery module, the battery case plays a key role in the safe work and protection of the battery module. Driven by national energy and manufacturing-related policies, tightening resource constraint...

AI Technical Summary

Problems solved by technology

The steel battery shell is the most primitive power battery pack shell, which is generally welded by cast steel plates. There are problems such as complicated welding process, low weld quality, poor sealing, and the surface quality of the battery shell needs anti-corrosion treatment. The battery shell made of aluminum alloy has the disadvantage of heavy weight, which does not meet the lightweight development trend of new energy vehicle battery shells; the aluminum alloy shell has the advantages of easy processing and forming, high temperature corrosion resistance, etc., but the aluminum alloy shell has low impact resistance, multiple Problems such as low efficiency of function integration, no obvious advantage of light weight, and generally high prices

In addition, the internal complex structure of the mainstream battery case on the market is mostly welded and riveted, and the number of additional components is large, which is not conducive to the lightweight of the body

Images