Composite rolling method for conductive composite metal sheet between battery tabs or batteries

Abstract

The invention provides a composite rolling method for a conductive composite metal sheet between battery tabs or batteries. The conductive composite metal sheet which is double-side grooved between battery tabs or batteries can be well compounded, so that the composite efficiency and the yield are improved. The method comprises the following steps: forming a groove in one side surface of each of two metal strips which have the same width and length as a base material for the conductive composite metal sheet between the battery tabs or the batteries, inlaying metal bars into the grooves in the two metal strips respectively, and cutting the metal bars corresponding to the grooves in the metal strips in equal width; painting lubricating oil on a roller which is in corresponding contact with one side surface, which is not provided with the groove, of each of the two metal strips, and then feeding the metal strips into a composite rolling mill for composite rolling; and cleaning the side surface, which is in contact with the lubricating oil, of each of the two strips, oppositely laminating the cleaned surfaces of the two strips, feeding the two strips into the rolling mill for composite rolling into one metal strip and rolling the metal strip into required thickness.

Description

technical field [0001] The invention relates to the field of battery technology, and specifically relates to a composite rolling method for battery tabs or conductive composite metal sheets between batteries. Background technique [0002] The Chinese utility model patent with the publication number CN203932178U discloses a tab inside the battery or a conductive composite metal sheet between batteries, which has better spot weldability compared with pure metal tabs or conductive composite metal sheets between batteries ,See figure 1 The schematic diagram of the structure of the conductive composite metal sheet between the tabs or batteries in , the base material of the conductive composite metal sheet between the tabs or batteries is a metal strip 1, and grooves are respectively set on the front and back sides of the metal strip 1 3. There is another metal strip 2 compounded in the groove. When processing such a tab structure or a conductive composite metal sheet structure b...

AI Technical Summary

Problems solved by technology

[0002] The Chinese utility model patent with the publication number CN203932178U discloses a tab inside the battery or a conductive composite metal sheet between batteries, which has better spot weldability compared with pure metal tabs or conductive composite metal sheets between batteries ,See figure 1 The schematic diagram of the structure of the conductive composite metal sheet between the tabs or batteries in , the base material of the conductive composite metal sheet between the tabs or batteries is a metal strip 1, and grooves are respectively set on the front and back sides of the metal strip 1 3. There is another metal strip 2 compounded in the groove. When processing such a tab structure or a conductive composite metal sheet structure between batteries, the metal strip 2 on both sides is rolled and compounded on the metal strip by rollers. However, since the front and back sides of the metal strip 1 need to be grooved and then composite rolled metal strips, the metal strip 1 and the metal strip 2 are respectively different metals, and the composite rolling between different metals It is more difficult to process. Usually, oil is often added to lubricate during rolling to improve rolling efficiency. In addition, once the organic oil penetrates into the rolling gap during compound rolling, it cannot be compounded together. Such a structure is used in compound rolling The front and back sides of the metal strip cannot be lubricated and rolled with oil during production, which makes the rolling efficiency very low, and the reliability and yield are relatively low.

Images