With the aggravation of environmental pollution and energy shortage in the world, new energy electric vehicles, as a kind of green environmental protection vehicle driven by limited energy power supply, have gradually become the focus of research and development of automobile manufacturers in various countries. Lithium iron phosphate battery has gradually become one of the best choices for new energy electric vehicle power battery due to its advantages such as long service life, high cost performance, safe use, rapid charging and green environmental protection.

The rapid increase in the number of new energy vehicles means that the core of new energy vehicles that are about to be scrapped - power batteries are also growing rapidly. How to deal with a large number of waste power batteries properly?

New energy power lithium battery is mainly composed of positive electrode, negative electrode, separator, electrolyte and battery shell. The battery shell is generally made of stainless steel or aluminum, the negative electrode includes carbon material and metal oxide, and the positive electrode is made of lithium cobaltate, lithium manganate, lithium iron phosphate, lithium nickel cobalt aluminate and lithium nickel cobalt manganate ternary materials. Cobalt, lithium, nickel, manganese and other metals are rare metals with high recovery value. The treatment of waste power batteries is mainly focused on the recovery and utilization of valuable metals in the positive electrode materials.

Power battery recycling has both environmental protection and economic value. At present, the domestic recycling system is gradually standardized and perfected, and the recycling technology is gradually mature.