Waste lithium battery treatment device

The invention discloses a waste lithium battery treatment device which comprises a cutting box used for cutting charged waste lithium batteries through a cutting machine arranged in the cutting box; the conveying rail is arranged in the cutting box, penetrates through a feeding and discharging opening of the cutting box and is used for conveying the waste lithium batteries into the cutting box to be cut through a clamping device arranged on the conveying rail in a sliding mode and conveying the cut waste lithium batteries out of the cutting box; the negative pressure fan is arranged on the cutting box and used for discharging waste gas in the cutting box; one end of the waste gas pipeline is connected with the negative pressure fan; one end of the filtering mechanism is connected with the waste gas pipeline. The filtering mechanism is arranged on the cutting box, and through multi-layer filtering of the filtering mechanism, particulate matter and harmful gas in waste gas generated by cutting and combustion of