Method for preparing aluminum, nickel and copper tabs for flexibly packaged or polymer lithium ion power battery

Abstract

The invention relates to a method for preparing aluminum, nickel and copper tabs for a flexibly packaged or polymer lithium ion power battery. The thickness of a metal substrate of the aluminum, nickel and copper tabs is from 0.3 to 0.5mm, and two 0.1mm tabs are compounded on the substrate. The method comprises the following steps of: 1) selecting an aluminum, nickel or copper material as a metal band; 2) cutting the metal band 1 according to the design diagram size requirement of the tabs; 3) grinding the metal band 1; 4) preprocessing the surface of the metal band 1; 5), fixing the tabs 2 and the metal band 1 on PET (Polyethylene Terephthalate) by a double-sided adhesive according to the diagram size; 6) hot-pressing the tabs: first preheating 1-5mm of silicon gel during hot pressing, then putting the laminated tabs in two sheets of silicon gel, and then hot-pressing; 7) taking out and cooling the pressed tabs at ambient temperature; and 8) cutting bits and pieces by the diagram size. Compared with the prior art, the invention has the advantages that the manufacture technology is simple, the seal effect of the aluminum film 3 with the tabs is good, the encapsulation effect is improved, and battery air-blowing and liquid leakage phenomena are greatly improved.

Description

Technical field: [0001] The invention relates to an aluminum, nickel, copper tab for a soft pack or a polymer lithium-ion power battery and a preparation method thereof. The thickness of the metal base material of the aluminum, nickel, and copper tab is 0.3-0.5 mm, and two 0.1 The mm ear glue is compounded on the base material. Background technique: [0002] Energy and the environment are extremely important material foundations for the survival and development of human society. Since the formation of energy systems based on fossil fuels such as oil, coal and natural gas, countries around the world have greatly promoted the prosperity and progress of human society. However, with the painful lessons of various unfortunate disasters encountered by countries in the world today and the continuous improvement of human scientific prediction capabilities, villagers around the world increasingly feel that they are facing a serious dilemma on the way forward: Non-renewable fossil fu...

AI Technical Summary

Problems solved by technology

[0012] 1) The width of the tab is limited by the shape of the battery, and the width cannot be expanded infinitely; after the width of the tab is increased, the surface flatness of the metal strip is not enough, the bonding force between the tab glue and the metal strip is insufficient, and the bonding strength is not enough, which may easily cause battery leakage Inflate;

[0013] 2) The thicker the tab thickness is, if it exceeds 0.2mm, the thickness difference between the aluminum-plastic film and the metal material of the tab will be large when the battery is packaged. like figure 1 and figure 2 shown

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