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APPLIED TECHNOLOGY EV BATTERY SYSTEMS
POWERING THE SPIRIT OF INNOVATION
priorities. To meet the challenge, Rolls- Royce decided to create the ‘Spirit of Innovation’. This aircraft has already set two World Records, making it the world’s fastest all-electric vehicle. For the plane, Rolls-Royce partnered with aviation energy storage specialist Electroflight to help develop the battery system. The WMG team at the University of Warwick were exclusively used to test and validate the batteries used on the aircraft. Using their state-of-the-art facilities at
F
WMG’s Energy Innovation Centre, researchers at WMG supported the team through the development process, conducting extensive electrical, thermal, safety, and vibration & shock testing. This was delivered all the way from Electroflight’s initial single lithium-ion cell selection through to the battery module, and finally the battery pack for a full propulsion battery system. Testing included cell selection, fire protection
system design, module level thermal management, system testing and pack level testing, and also included sub-powertrain testing of the battery system and electric machines connected together. Individual components such as the battery
casing materials, lithium-ion cells, cell clusters and sub-modules were all examined in WMG’s battery testing laboratories, including the Battery Abuse Testing Centre. Aerospace DO-160G shock and vibration testing was performed in WMG’s battery vibration facility – the first time an aircraft propulsion battery has successfully completed DO-160G testing in the UK.
RECORD BREAKING On 16th November, the Spirit of Innovation took to the sky at the UK Ministry of Defence’s Boscombe Down experimental aircraft testing site for its record-breaking flight. Data was submitted to the Fédération Aéronautique
46 DESIGN SOLUTIONS FEBRUARY 2022
ollowing COP26, it is becoming increasingly clear that electrification is the way forward, with aviation topping the list of global
Internationale (FAI), who control and certify world aeronautical records, who confirmed that the Spirit of Innovation is the world’s fastest electric plane. The two new world records broken are: 1. The aircraft reached a top speed of 555.9km/h (345.4mph) over 3km, smashing the existing record by 213.04km/h (132mph) 2. The aircraft achieved 532.1km/h (330mph) over 15 kilometres, 292.8km/h (182mph) faster than the previous record.
Mark Amor-Segan, chief engineer from WMG,
University of Warwick commented: “We have worked closely with Electroflight and Rolls-Royce throughout this process, cementing new collaborative relationships and helping achieve world-class pioneering technology. To see it progress from literally a single cell into a full- scale battery system and a world-record breaking flight, is tribute to the incredible dedication and capability of the whole team at ACCEL. This project has played a very important part in our work in Aerospace, and we’re excited to
continue our research into electrification and the future of sustainable flight.” Douglas Campbell, technical director of
Electroflight said: “This has been a landmark project for our company and our industry – one which opens up a world of possibilities in the electrification of aviation. We’re thrilled to have played such an important part in this success and grateful to our partners at WMG for their support throughout this endeavour.” Rolls-Royce’s customer director, Matheu Parr, added: “The support we received from WMG to develop the battery technology that would power the world’s fastest all-electric aircraft was critical for the team’s record-breaking triumphs. Rolls- Royce has a long-standing relationship with WMG to ensure we are the forefront of technology and we will build on this capability to deliver propulsion and power systems for the advanced air mobility market.”
WMG, University of Warwick
https://warwick.ac.uk
FERRYING TOURISTS ACROSS LAKE BRIENZ
Built in 1954 and capable of carrying 700 passengers, the MS Jungfrau is the flagship of the BLS tourist fleet on Lake Brienz, Switzerland. The ship has, however, recently been completely modernised with the addition of a hybrid electric and diesel propulsion system. Leclanché SA has supplied the battery system for this. The Leclanché lithium-ion battery system, consisting of two sets of 12 type 16s2p modules fitted with 60Ah G/NMC cells, powers various electrical parts of the ship (engine, lighting, galley, etc.). The autonomy of the battery system is 30 minutes in 100% electric propulsion and up to 10.5 hours in hybrid operation, with the possibility to recharge during operation. The complete charging time of the batteries during the night at dockside is less than 90 minutes. Thanks to the batteries supplied by Leclanché, BLS estimates that the MS Jungfrau’s annual diesel consumption will be reduced by 12,000 litres
and that it will emit 30 tons of CO2 less, which is equivalent to the emission of 15 cars per year. In Switzerland, the company will also equip two new hybrid boats ordered by the CGN company
for cross-border transport between Switzerland and France on Lake Geneva. Leclanché's Marine Rack System, powered by the company's proprietary lithium-ion batteries, has the potential to reduce the fossil fuel consumption of ships by an average of 20% (and up to 100% for fully electric ships), and significantly reduces NOx and fine particle emissions.
Leclanché SA
www.leclanche.com
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