Waste lithium-ion power battery charged crushing combination method and device

The invention provides a waste lithium-ion power battery charged crushing combination method and device, and the method comprises the steps: putting a waste lithium-ion power battery into an inner cavity of a first crusher with an open bottom outlet through a feeding platform, and enabling the battery to be sheared, shredded and pretreated into a coarse material; then enabling the battery coarse material to rapidly fall into a corrosion-resistant water tank in butt joint with a discharge port of the first crusher, so that the battery coarse material loses efficacy under the soaking of water; and conveying coarse battery materials falling into the water tank into the belt type drying machine through a conveying belt with one end soaked in the water tank, and conveying the coarse battery materials into the second crushing machine to be further crushed into fine materials after being transferred and dried by a conveying belt arranged in a drying cavity of the belt type drying machine. The crushing safety of the