Novel lithium battery with silicon-carbon composite negative electrode

The utility model discloses a novel lithium battery with a silicon-carbon composite negative electrode, relates to the technical field of lithium batteries, and aims to solve the problems that enoughwelding strength is difficult to ensure and whether the battery is damaged or not cannot be observed in time when a tab of a battery cell of the conventional lithium battery with the silicon-carbon composite negative electrode is welded with a current collection foil. A nylon layer is arranged outside the lithium battery main body; a first bonding coating is arranged in the nylon layer; an aluminum foil is arranged in the first bonding coating; a conversion film layer is arranged in the aluminum foil; a second bonding coating is arranged in the conversion film layer; a polyolefin layer is arranged in the second bonding coating; wherein the polyolefin layer is internally provided with a battery cell, the two sides of the upper end of the battery cell are respectively provided with a tab, the exterior of each tab is