Electric car news
You may remember these shocking images of electric buses burning in the streets of Paris in 2022. Two years after these incidents which left their mark, the experts have finally delivered their conclusions. And the least we can say is that their revelations raise serious questions about the safety of large electric vehicles. Let’s dive into the details of this affair which could well have repercussions on the entire sector.
An explosive cocktail of failures
The investigation carried out by the Land Transport Accident Investigation Bureau (BEA-TT) highlighted a combination of factors leading to the fires. Contrary to popular belief, it is not electrical technology itself that is to blame, but rather a series of technical and human failures.
First shocking revelation: a production error would cause a short circuit between the battery cells. This type of fault should normally have been detected by the battery management system (BMS), but the latter failed in its task. Even more worrying, no alert was triggered to warn the driver, thus depriving passengers of a rapid evacuation which could have proved crucial.
The unsuspected limits of “safe” technology
One of the most worrying aspects revealed by this investigation concerns the very technology of the batteries used. The incriminated buses, Bluebus brand, were equipped with LMP (lithium-metal-polymer) solid electrolyte batteries. This technology was supposed to offer better safety against the risk of overheating. However, it turns out that this supposed security has led to dangerous negligence.
In fact, the fire resistance of these batteries was simply not tested, their solid electrolyte being considered non-flammable. A hypothesis that the facts have brutally denied. This revelation could have major implications for the entire electric vehicle sector, as many manufacturers are banking on this solid electrolyte technology for their future batteries.
Recommendations that sound like a warning
Faced with these alarming findings, the BEA-TT issued seven recommendations aimed at preventing future incidents. These recommendations are not limited to the manufacturer Bluebus alone, but are aimed at the entire industry:
- Improve early detection of defects that can lead to fires
- Strengthen passenger protection against high temperatures and the risk of batteries falling
- Ensure better recording and regular transmission of critical data
- Continue research into the effectiveness of means of fighting this type of fire
- Change regulations for all large electric vehicles
- Improve the training of emergency services to intervene in this type of incident
These recommendations highlight how the electric vehicle industry, despite its rapid progress, still has a way to go when it comes to safety. They also highlight the need for a more holistic approach to safety, integrating not only vehicle design, but also the training of stakeholders and the adaptation of regulations.
A salutary reminder for the entire industry
Although these incidents fortunately did not cause any casualties, they serve as wake-up call for the entire electric vehicle sector. As the transition to electromobility accelerates, with ambitious targets set by many countries, this case reminds us of the crucial importance of not sacrificing safety on the altar of innovation.
For you, future buyers or users of electric vehicles, these revelations should not be a reason for panic. Statistics show electric vehicle fires remain rarer than those of thermal vehicles. However, they emphasize the importance of remaining vigilant and choosing vehicles from manufacturers renowned for their seriousness in terms of safety.
Towards a new era of transparency?
This investigation could mark a turning point in how the industry approaches electric vehicle safety. The transparency demonstrated by the BEA-TT, by making its entire report public, could encourage other actors to be more open on these crucial issues.
For you, the consumer, this potentially means access to more detailed information about the safety of the vehicles you are considering purchasing. Do not hesitate to ask your dealer specific questions about the safety systems in place, particularly regarding battery management.
Ultimately, this case reminds us that the transition to electromobility is a complex process, which requires constant vigilance and close collaboration between manufacturers, authorities and users. It is at this price that we will be able to build a future of mobility that is both sustainable and safe.
Written by Albert Lecoq
Specialist in electric car buying guides, I am passionate about new technologies and am a strong supporter of the adoption of electric technology and sustainable mobility.
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