Germany's New Robots Examine Old EV Batteries and Sort Out the Usable Ones
A new robotic system developed in Germany analyzes old electric vehicle batteries, separates reusable cells, and enables the recovery of critical raw materials.
Today, most lithium-ion batteries are sent to recycling facilities after reaching the end of their lifespan. However, current recycling processes typically require batteries to be completely discharged and then shredded. While this method is considered necessary for safety, it actually leads to the waste of battery cells that are still usable. Especially as critical raw materials like lithium, nickel, and cobalt found in electric vehicle batteries become increasingly strategic, researchers are driven to develop methods that can re-evaluate these batteries as much as possible, rather than just shredding them for recycling. A new robotic system developed in Germany aims to solve precisely this problem.
Developed by the Fraunhofer IPA research team in Germany, this new system automatically analyzes old electric vehicle batteries to determine which cells can be reused, which can be refurbished and re-evaluated, and which need to be fully recycled. The project, supported by the German Federal Ministry of Education and Research (BMFTR), aims to process electric vehicle batteries much more efficiently than current recycling methods.
Robots Act According to Cell Condition
One of the most significant problems highlighted by researchers is that used electric vehicle batteries still carry a substantial amount of residual voltage. This poses serious safety risks during recycling. Therefore, in existing facilities, batteries are usually completely discharged before processing. However, this "deep discharge" process irreversibly damages cells that could still be functional. The new robotic platform developed by Fraunhofer IPA, instead of applying the same process to every battery cell, follows a different procedure based on how the cell will be utilized in the future. If a cell is to be recycled, it is fully discharged; however, cells deemed suitable for reuse or refurbishment are brought to a specific charge level in a controlled manner. According to researchers, this method could both save more battery cells and significantly reduce waste.
The system is not limited to managing battery charge status. The platform integrates automatic contact systems, real-time battery analysis, AI-supported decision-making mechanisms, and adaptive discharge technologies into a single, unified structure. The developed robotic cell system can safely disassemble battery packs down to the cell level and make cell terminals accessible for testing.
Beyond reuse, the project also plays a significant role in the more efficient recovery of critical raw materials. For batteries that need to be fully recycled, automated disassembly and cell opening technologies have been developed to make batteries suitable for water-based recycling processes. According to researchers, this method could help recover significantly more critical materials compared to traditional recycling techniques.
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