An electrical connection structure of a new energy battery module

Abstract

The invention discloses an electrical connection structure of a new energy battery module, the structure comprising a conductive metal sheet 1 and a conductive metal sheet 2 for connecting positive and negative electrodes of the battery, wherein a hard row is connected between the conductive metal sheet 1 and the conductive metal sheet 2. The conductive metal sheet 1 and the conductive metal sheet2 are arranged, the conductive metal sheet 1 and the conductive metal sheet 2 have a function of certain size stretching, dimensional tolerance of a cell itself can be adjusted, the conductive metalsheet 1 and a conductive metal sheet 2 are bonded with a pole of the battery cell well when the battery cells are grouped, the risk of pole welding failure is effectively solved, through the structural characteristics of the conductive metal sheet 1 and the conductive metal sheet 2, the conductive overcurrent capacity can be limited in a certain range, when the current exceeds a threshold value, the structure of the conductive metal sheet 1 and the conductive metal sheet 2 are fused, that is, the power supply is cut off, the function of ''fuse'' is achieved, and the safety of the battery module is effectively improved.

Description

technical field [0001] The invention relates to the technical field of electrical connection of new energy battery modules, in particular to an electrical connection structure of new energy battery modules. Background technique [0002] The battery module is composed of multiple batteries connected in a certain series-parallel relationship. During the charge and discharge process, different batteries are connected by metal conductors to transmit current. Usually, the metal conductors and the positive and negative poles of the batteries are welded. The metal conductor is commonly known as Busbar, and the material is generally copper, aluminum or aluminum alloy, nickel, steel, etc. According to the hardness state of Busbar, it is usually divided into hard Busbar (hereinafter referred to as hard busbar) and soft Busbar (hereinafter referred to as soft busbar). [0003] The hard row is generally made by mechanical washing or stamping of the plate. This process is mature and th...

AI Technical Summary

Problems solved by technology

Due to the relative complexity of the soft row process, the high cost of parts, and the poor product consistency during the hardening process of the metal sheet, when there is oil or impurities between the foil layers, there will be inconsistent peeling force of the foil layer in the hardened area, which will affect the soft row welding. , there is welding explosion, welding is not firm, etc., affecting the welding quality of battery groups

[0005] In the square cell structure, there is generally a distance of 2~6mm between the top cover plate of the cell and the pole of the cell. When designing the module, the busbar is usually welded to the upper surface of the pole of the cell. There is no space for the height of 2~6mm. use, waste

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