Recycling method for treating used batteries, in particular rechargeable batteries, and battery processing installation
AssigneeDuesenfeld GmbH
InventorChristian Hanisch
Life of this patent
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Abstract
The invention relates to a method for treating used lithium batteries (10) containing the steps: comminuting the batteries (10) such that comminuted material (24) is obtained, and (b) inactivating of the comminuted material (24) such that an inactive comminuted material (42) is obtained. According to the invention, the drying is conducted at a maximum pressure of 300 hPa and a maximum temperature of 80° C. and the deactivated comminuted material (42) is not filled into a transport container and/or said deactivated comminuted material is immediately further processed after the drying process.
Claims14
A method for treating used lithium batteries , comprising:
- receiving, into a comminuting device, used lithium batteries that include a cathode, anode, separator, and electrolyte comprising a fluorine salt and a solvent, the solvent including an organic carbonate;
- comminuting the used lithium batteries, by the comminuting device, and obtaining comminuted material as a result;
- and
- inactivating the comminuted material and obtaining inactivated comminuted material as a result, wherein the inactivating includes a drying process, comprising drying the comminuted material by removal of organic carbonate from the electrolyte by vaporizing the organic carbonate at a pressure-temperature above a boiling point of the organic carbonate, the pressure being not more than 300 hPa, and the temperature being not more than 80° C. and lower than a decomposition temperature of the fluorine salt.
Dependencies are inferred from the claim text.