EV Battery Design Guidelines Target Safer, Repairable Batteries

New Battery Design Guidelines Address EV Safety

On August 13, TU Graz University of Technology announced EV battery design guidelines intended to improve safety, simplify repairs and strengthen sustainability across the battery life cycle. Developed through the E-Track project, the initiative brings together TU Graz, the University of Graz and industry partners to address weaknesses in current battery design practices. The project focuses on making battery systems safer, more sustainable and more cost-effective while supporting easier handling after accidents and improving prospects for repair and recycling.

Design Standards Could Improve Battery Handling

According to TU Graz, the absence of common battery design standards can create challenges for emergency services when damaged electric vehicle batteries must be assessed or handled. It can also make repair and recycling more difficult because battery systems are not always designed for straightforward dismantling. The researchers said better-oriented designs can improve battery safety, efficiency and recyclability. The approach is particularly relevant to Austria’s growing focus on practical battery sustainability and safer end-of-life management.

Alternative Housing Concepts Support Easier Repairs

The E-Track researchers compared the commonly used bonded battery housing with two alternative concepts. One uses replaceable covers combined with heat-dissipating pads, while the other employs liquid cooling with a sealed, screwed housing. Both alternatives are intended to make battery dismantling easier and allow individual cells to be replaced rather than requiring broader component replacement. This repair-oriented approach could help reduce waste and improve the economic value of battery systems when damaged packs can be restored instead of discarded.

Cell Reuse and Diagnostics Can Reduce Battery Risks

The study also examined whether damaged batteries could retain usable cells after an accident. Researchers found that reusing cells can improve economic and environmental performance, with repair-friendly battery designs becoming beneficial when as little as 8% of cells can be reused. The team also developed diagnostic methods to identify hidden damage, including micro-shorts that may not be immediately visible but could create a later fire risk. These methods are intended to support safer decisions about repair, reuse and battery handling.

Methods Developed for Two-Wheelers Could Scale Further

Although the guidelines were developed mainly for electric two-wheelers, the researchers said the underlying methods can also be applied to larger vehicles. This gives the E-Track findings relevance beyond the original application area and could help manufacturers consider repairability, diagnostics and recyclability earlier in battery-system development. The project’s results may also contribute to future industry standards and regulations in Austria and other markets, particularly as battery safety and resource efficiency become increasingly important considerations for electric mobility.

Project Funding and Industry Implications

The E-Track project was funded by the Austrian Research Promotion Agency, known as FFG. Its findings bring together battery safety, repairability, reuse and recycling considerations within a single design approach rather than treating them as separate end-of-life issues. For manufacturers, the work highlights how battery architecture can influence both technical safety and lifecycle economics. For emergency services and recyclers, more accessible battery construction and improved diagnostic techniques could make damaged batteries easier to assess, dismantle and process safely in Austria and beyond.

Frequently Asked Questions

What are the main benefits of the new battery design approach?
The new approach aims to make electric vehicle batteries safer to handle while improving repairability, cell reuse, recycling and lifecycle sustainability. The E-Track research compared different battery housing concepts and developed diagnostic methods for detecting hidden damage such as micro-shorts. Researchers found that repair-friendly designs can deliver economic and environmental benefits even when only 8% of cells can be reused after an accident. Although developed mainly for electric two-wheelers, the methods could also be applied to larger vehicles and potentially influence future industry standards and regulations.