Novel power battery pack box body

Abstract

The invention relates to a novel power battery pack box body. The novel power battery pack box body comprises a bottom box, side plates and positioning pipes, wherein the bottom box is of a cuboid box body structure with an open upper end and is composed of a bottom plate and four baffle plates which are vertically connected onto the edge of the bottom plate; the four side plates are arranged and have the same height; flange edges, which extend outward, are arranged at the top and the bottom of each side plate; the four side plates are fixedly connected to the outer sides of the baffle plates respectively; the lower surfaces of the side plates are leveled with the lower surface of the bottom box; the four positioning pipes are arranged and are transversely fixed to the upper ends of the inner sides of the four side plates respectively; the upper surfaces of the four positioning pipes are leveled; and the upper surfaces of the four positioning pipes are higher than the upper surfaces of the side plates. The box body is good in sealing performance and the structural strength is greatly improved.

Description

technical field [0001] The invention relates to the field of power batteries of electric vehicles, in particular to a novel power battery pack box body. Background technique [0002] In the field of electric vehicles, the power battery pack plays an irreplaceable and important role as the power source of electric vehicles. The battery pack is generally composed of a box and batteries inside the box. In order to ensure the safety of the internal batteries and electrical components, the box must be waterproof. In the existing power battery box, the same board is generally used. After cutting according to the unfolded drawing, it is then bent and welded. After the welds of the four corners of the box are welded, in order to ensure a beautiful appearance, the external welds must be polished, and often after grinding. Due to trachoma, there is a problem of water leakage in the box body. At the same time, the deformation of the flange edge of the existing box body is relatively l...

AI Technical Summary

Problems solved by technology

The battery pack is generally composed of a box and batteries inside the box. In order to ensure the safety of the internal batteries and electrical components, the box must be waterproof. In the existing power battery box, the same board is generally used. After cutting according to the unfolded drawing, it is then bent and welded. After the welds of the four corners of the box are welded, in order to ensure a beautiful appearance, the external welds must be polished, and often after grinding. Due to trachoma, there is a problem of water leakage in the box body. At the same time, the deformation of the flange edge of the existing box body is relatively large after welding, resulting in poor sealing performance; Strong vibration is generated, and the existing power battery pack box is also poor in anti-seismic effect, often due to vibration, the welding part is desoldered or cracked and water leaks

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