SAFRA and MICHELIN/SYMBIO: for a 100% French hydrogen bus offer
30 minutes of charging for 300 km of range
The bus manufacturer SAFRA and the hydrogen systems supplier SYMBIO, a subsidiary of the MICHELIN group, today announced the launch of the Businova hydrogen (see technical sheet in annex), a 100% French hydrogen electric bus that manages to reconcile two key benefits for users: a zero-emission driving and a great comfort of use – the Businova hydrogen adapts to all weather conditions, it is as efficient as a diesel bus in terms of capacity, acceleration and availability, can travel more than 300 km per day, and recharges in less than 30 minutes (compared to several hours for a single battery bus). Finally, the investment and operating costs of the associated hydrogen stations are limited, since this hydrogen bus can refuel at medium capacity facilities (less than 80 kg/day).
Such performances are the result of a studied combination of technical choices. In terms of the Businova’s architecture, first of all: the vehicle’s ingenious bi-modular chassis and its self-supporting structure provide almost unlimited flexibility and adaptability. Its electric traction chain consists of a 250 kW motor. SAFRA and MICHELIN/SYMBIO have also chosen an intelligent hybridization between a fuel cell with an output of 30 kW (application of the H2Motiv L module – see appendix) and a 132 kWh battery pack (we call it “mid-power”). This makes it possible to reduce the onboard hydrogen compared to a “Full power” solution (small battery/large battery), with an impact on the filling time and the possibility of charging at medium capacity stations.
Team collaboration at the heart of success
- The integration into the bus’s overall electrical chain: a major integration work was carried out to obtain a reduced battery weight and a very compact volume, which facilitated the integration into the vehicle.
- Optimization of hydrogen/battery hybridization.
- Operational safety: the teams worked together to ensure compliance with current regulations
- Approval phases – the implications of the different suppliers and the joint work of the teams have significantly reduced approval time.
In the end, the development time was very short (less than 2 years), which confirms the prospects announced for France in the hydrogen deployment plan.
The answer to an environmental and economic issue
In France, after the delivery of the 6 Businova hydrogen for the Artois-Gohelle agglomeration, SAFRA plans to deliver 5 hydrogen vehicles to BE Green, as well as a first at Le Mans.
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