Lug system with protection function for lithium battery

Abstract

The invention discloses a lug system with a protection function for a lithium battery. The lug system is characterized in that a lug busbar piece is arranged on a conductor plate; the lug busbar piececomprises a current main path unit and a plurality of lugs which are connected to corresponding positions on the current main path unit; and the lugs comprise plug planar units and lug current branchunits which are connected with corresponding ends of the lung planar units. By designing the appearance sizes of different parts of the busbar lugs and refining the current-carrying capabilities of small cross sections, the lug system of single lugs with self-fusion protection functions can be achieved, and in addition, the lug system is simple in structure and low in production and manufacturingcost.

Description

Technical field: [0001] The invention relates to a tab used when battery cells are connected in parallel, in particular to a tab system for lithium batteries with a protective function used when single cells are connected in parallel to form a group. Background technique: [0002] With the continuous development of new energy technology, new energy vehicles have gradually entered people's daily life, and with the continuous popularization of new energy vehicles, namely electric vehicles, the use of new energy batteries is also increasing significantly. Lithium batteries are a major product in new energy batteries and are widely used. In the existing electric vehicle manufacturing, the power supply PACK manufacturers mainly use cylindrical batteries, square shell batteries, soft pack batteries, etc., among which cylindrical batteries are mostly used, and 18650, 26650 And other main specifications as a model for mainstream use. When using cylindrical batteries as the basic b...

AI Technical Summary

Problems solved by technology

During the preparation process of the battery module or battery module, when the battery is welded to the conductive plate, such as when the lithium battery is welded to the conductive copper or the conductive nickel-plated steel sheet, the electrolyte of the lithium battery is affected by external conditions. , resulting in the instability of the current of the lithium battery, sometimes there will be an instantaneous large current, and the high current will generate high heat. Due to the instantaneous high current and high heat, it is very easy to burn out the entire battery pack or the tab system of the lithium battery pack. , and even cause the lithium battery cell to burn out, thus causing a safety hazard

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