Robotics for electric vehicles battery packs disassembly towards sustainable remanufacturing

Abstract

The automotive industry is involved in a massive transformation from standard endothermic engines to electric propulsion. The core element of the Electic Vehicle (EV) is the battery pack. Battery pack production misses regulations concerning manufacturing standards and safety-related issues. In such a fragmented scenario, the increasing number of EVs in circulation is growing exponentially, opening new challenges for managing the end-of-life of their battery packs. This paper analyses the use of robotics for EVs' battery pack disassembly to enable the extraction of the battery modules preserving their integrity for further reuse or recycling. The analysis highlights that a complete automatic disassembly remains difficult, while human-robot cooperative disassembly guarantees high flexibility and productivity. The paper introduces guidelines for designing a robotic cell to disassemble a battery pack in collaboration with an operator. The design of the workcell evaluates the technological requirements for disassembly, the analysis of potentially explosive atmospheres (ATEX) of the area around the battery pack, and the design and optimisation of robotics tools in the ATEX zone. The work proposes solutions according to the current international standards.

Automated Battery Disassembly—Examination of the Product- and Process-Related Challenges for Automotive Traction Batteries

“…In most cases, the battery pack, which is usually in an unknown state of charge, can only be discharged after the housing cover has been removed. The reason for this is that the battery management controller cannot be addressed without the necessary protocols, which are usually not provided by the vehicle manufacturers [13].…”