Discharge method of lithium batteries in energy storage stations

Why is discharge important in the recycling of retired lithium-ion batteries?

Discharge is an essential step during the recycling of retired lithium-ion batteries. However, state-of-the-art discharge methods are inefficient and/or contribute to pollution, as the reaction mechanisms underlying different discharge pathways remain poorly understood.

Do spent lithium ion batteries have residual power after discharge?

However, little attention has been paid to the voltage rebound phenomenon during the discharge pretreatment of spent LIBs. However, this phenomenon shows that spent LIBs still have some residual power after discharge, which will cause safety risks during battery disassembly and crushing.

What is the best method for discharge pretreatment of lithium ion batteries?

The safest and most effective solution is to connect resistors at both ends of the battery to consume the residual electric energy of the spent LIBs. However, due to different battery sizes, this method is not economically feasible. Based on this principle, two feasible methods have been derived for discharge pretreatment.

What is a safe discharge strategy for retired lithium-ion batteries?

As a consequence, a rapid and safe discharge strategy for retired lithium-ion batteries is developed through a reversed physical short-circuit with which the lithium-ion migration velocity achieves 610.07 mg/h and the energy consumption is reduced by 54.24% compared with traditional physical discharge.