Improved method for recycling lithium batteries
The method addresses the challenges of cost, yield, and safety in lithium battery recycling by shredding and cooling batteries with a shredding liquid, separating residues, and recovering valuable metals, resulting in enhanced efficiency and safety.
JP2025516061APending Publication Date: 2025-05-26TECH LITHION INC
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Patent Information
- Application Number
- JP2024565089
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-05-02
- Filing Date
- 2023-05-02
- Publication Date
- 2025-05-26
Smart Images
Figure 2025516061000001_ABST
Abstract
The present invention relates to a method for shredding a lithium battery. In a shredding compartment chamber, the lithium battery is shredded and rapidly cooled with a shredding liquid to safely discharge the battery, generating shredded battery residues and a liquid containing organic compounds and lithium compounds. At least a part of the liquid is separated from the shredded battery residues to obtain a separated liquid containing a low flash point solvent and a high flash point solvent. By removing at least a part of the low flash point solvent in the recycled shredding liquid and / or increasing the concentration of the high flash point solvent to raise the flash point of the recycled shredding liquid compared to the shredding liquid in the shredding compartment chamber, a recycled shredding liquid is generated from the separated liquid. The recycled shredding liquid is supplied to the shredding compartment chamber to replace at least a part of the shredding liquid.
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