Lightweight power battery box capable of steel and aluminum riveting

Abstract

The invention discloses a lightweight power battery box capable of steel and aluminum riveting. The lightweight power battery box comprises an inner container assembly and a bracket assembly, whereinthe inner container assembly is fixedly connected with the bracket assembly in lock riveting and adhesive bonding manners; the inner container assembly comprises a protective shell and an H-shaped installation cross beam, and the installation cross beam is connected to the interior of the protective shell by additionally installing a thread lock through a riveting technology; the bracket assemblycomprises a bottom shell hemming, and a plurality of lifting lugs bent by a metal plate or formed by stamping are arranged on the outer side face of the bottom shell hemming at intervals. The productcan realize batch production, the riveting assembling materials can be produced in parallel, the production process is short, and the efficiency is high. Most components of the product are made of aluminum alloy, and the final product can realize light weight. The lock riveting process is controllable in quality, the protective shell is free of damage, and the water prevention and dust preventionperformances are excellent. The assembling process is free of heat input, and the product is basically free of deformation. The aluminum alloy has excellent corrosion resistance, and does not need extra surface treatment, so that the environment is protected, and the aluminum alloy is also saved.

Description

technical field [0001] The invention relates to a battery box, in particular to a lightweight power battery box body riveted with steel and aluminum. 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 larg...

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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