Anti-short-circuit lithium battery electrode lug

Abstract

The invention discloses an anti-short-circuit lithium battery electrode lug. The anti-short-circuit lithium battery electrode lug comprises a strap-shaped flat conductor. Insulating membranes are arranged on the two sides of the strap-shaped flat conductor respectively. The lower end edge of the insulating membrane on one side is longer than the lower end edge of the insulating membrane on the other side by 1 mm or more. The portion, going beyond the lower edge of the insulating membrane on the other side, of the lower end edge of the insulating membrane on one side is located at the bent position of an outer wrapping electrode lug when the electrode lug is bent. According to the anti-short-circuit lithium battery electrode lug, the lower end edges of the two insulating membranes located on the two sides of the strap-shaped flat conductor are not aligned, the lower end edge of the insulating membrane on one side is longer than the lower end edge of the insulating membrane on the other side by 1 mm or more, the portion, going beyond the lower edge of the insulating membrane on the other side, of the lower end edge of the insulating membrane on one side is located at the bent position of the outer wrapping electrode lug when the electrode lug is bent, the situation that the conductive part is exposed after the electrode lug is bent can be avoided, short-circuit accidents are reduced, and meanwhile the bonding faces of the strap-shaped flat conductor and the insulating membranes can be enlarged so that the insulating films can be not prone to falling.

Description

technical field [0001] The invention relates to the field of lithium batteries, in particular to an anti-short circuit lithium battery tab. Background technique [0002] refer to figure 1 , Lithium battery tabs are generally composed of a strip-shaped metal 1 and insulating films 2 pasted on both sides of the strip-shaped metal 1 respectively. When the existing lithium battery tabs are produced, the insulating film 2 is generally symmetrically pasted on both sides of the strip metal 1. When the lengths of the two insulating films 2 are different, the lower ends of the two insulating films 2 are aligned and pasted on the strip metal 1. On both sides of the strip-shaped metal 1, when the tabs are bent and installed on the lithium battery, the insulating film 2 is used to protect the strip-shaped metal 1 so that it does not contact the lithium battery winding core, such as figure 2 shown to reduce the risk of short circuits. However, refer to figure 2 , because the lower ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the object of the present invention is to provide a short-circuit-proof lithium battery tab, which solves the problem that the conductive part of the lithium battery tab is exposed after being bent and installed, and is prone to short circuit.

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