Battery safety connecting piece

Abstract

A battery safe connection mode comprises a metal plate and a plastic plate; the metal plate is provided with a plurality of power connection single bodies which are distributed in an array, each power connection single body comprises two strip-shaped single pieces which are symmetrically arranged, and the strip-shaped single pieces are connected with a metal plate main body through narrow piece bodies located on the upper portions and the lower portions of the outer sides of the strip-shaped single pieces; a plurality of first through holes corresponding to the power connection single bodies are formed in the plastic plate; the metal plate and the strip-shaped single sheet are made of metal A, the narrow sheet body is made of metal B, and the melting point of the metal A is higher than that of the metal B. According to the invention, the metal connecting material can be fixed on the plastic material, so the thin-wall and thin-narrow structure of the metal material can be effectively protected and cannot be damaged due to the movement of the connected body; the whole connecting piece is made of nickel with a large melting point, the narrow sheet bodies of the protection part are made of aluminum with a small melting point, connection can be effectively disconnected when the battery cells are out of control, and the safety of the battery pack is greatly improved.

Description

technical field [0001] The invention relates to the technical field of battery connection, in particular to a battery safety connector. Background technique [0002] At present, the power of the power battery industry or energy storage system ranges from a few kilowatt-hours to several thousand watt-hours, and large-scale energy storage systems may even reach megawatt-hours. The number of batteries in the entire system ranges from dozens to tens of thousands. For the convenience of installation, the batteries are generally assembled through a fixed structure to form a module structure. The battery cell and the bus bar are usually welded by nickel sheets or nickel-plated steel sheets, and the distance between the cells in the module structure is generally small. Once a single cell is out of control and cannot be disconnected from the power connection, the short circuit The path will be used as an external short-circuit path by other batteries due to the parallel connection o...

AI Technical Summary

Problems solved by technology

[0004] (1) The connection of aluminum wire will require the connected body not to have a small displacement, otherwise the aluminum wire will break. In order to ensure that the connected body does not shift, it is necessary to use a complex cell fixing process, which increases the difficulty of manufacturing;

[0005] (2) Although the long and narrow nickel sheet connection process has a certain protection function, the protection effect is not ideal due to the material itself

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