Waste lithium ion battery charged crushing and waste heat recovery integrated system and method

Abstract

The invention discloses a waste lithium ion battery charged crushing and waste heat recovery integrated system and method. The system comprises an automatic feeding machine, a lithium battery SOC automatic detection device, a computer, a protection gas charged crushing device, a gas management device, a gas purification device and a heat exchange device. The method comprises the following steps: putting a waste lithium ion battery into a crushing device in a low-oxygen environment, and carrying out electrified crushing in a protection gas atmosphere; and feeding purified protection gas into a heat exchange device to generate hot water used as a heat source. According to the invention, the waste battery treatment process simplifies the battery recovery process, and avoids the problems that a conventional discharging method is long in time consumption and causes pollution; the waste batteries are placed in the high-flow protection gas to be directly broken and disassembled, so that the oxygen content is reduced while heat released in the disassembling process is taken away so as to avoid the risk of fire and explosion in the crushing process; and the collected energy is effectively utilized, so that the effects of energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention belongs to the field of recycling waste batteries, and relates to an integrated system and method for charged crushing and waste heat recovery of waste lithium-ion batteries. Background technique [0002] Due to the advantages of high specific energy, long life, good cycle performance, and environmental friendliness, lithium-ion batteries are widely used in the fields of electronics, communications, and new energy vehicles. my country is a big country in the production and consumption of lithium-ion batteries, and the lifespan of lithium-ion batteries is about 2 to 3 years, so the recycling market for lithium-ion batteries is huge. In terms of composition, there are a variety of heavy metal elements and organic compounds in lithium-ion batteries. If they are not recycled, they will pollute the environment and affect human health. In terms of recovery value, ternary lithium batteries contain a variety of valuable metals, such as nickel, c...

AI Technical Summary

Problems solved by technology

Physical discharge uses an external circuit to release the remaining power, but the discharge speed is slow and the efficiency is low

Chemical discharge uses salt solution to soak, a chemical reaction occurs, and electrical energy is released, but it is easy to cause electrolyte leakage and organic wastewater

Mechanical puncture is prone to fire and explosion, threatening the safety of workers and damaging equipment

While these discharge methods have their own defects, they cannot use the remaining energy in the battery, resulting in a waste of energy.

[0005] At present, in the process of crushing, sorting and recycling of lithium-ion batteries, the residual energy of the battery may cause fire and explosion, and at the same time, the residual energy is not utilized and causes waste. These problems need to be solved urgently

The commonly used discharge methods have serious defects, which limit their application in production

Images