Hybrid Reconfigurable Battery Pack for All-Electric Aircraft
Synergizing High-Specific-Energy and Power Battery Types
Mayuresh Bhide (Student TU Delft)
Yawen Liang (TU Delft - DC systems, Energy conversion & Storage)
Gautham Ram Chandra Mouli (TU Delft - DC systems, Energy conversion & Storage)
Mohamad Ghaffarian Niasar (TU Delft - High Voltage Technology Group)
Pavol Bauer (TU Delft - DC systems, Energy conversion & Storage)
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Abstract
The aviation industry, responsible for over 2% of energy-related CO2 emissions in 2022, aims for Net Zero Emissions by 2050. Despite electric aircraft's environmental benefits and improved operational efficiency, the current battery technology limits their range and size. Based on the optimal system voltage and power profile of the reference all-electric aircraft, this paper presents the design of a hybrid reconfigurable battery pack. The design incorporates a combination of high-specific-energy (263 W h kg-1 at cell level) and high-specific-power (1800 W kg-1 at cell level) battery types and its performance is compared with that of a fixed configuration battery pack comprising a single battery type. Simulation results suggest a potential 900 kg (18% lighter than fixed configuration) weight savings with reconfigurable pack, translating into enhanced payload, energy savings, or range extension for 9 PAX Eviation Alice electric aircraft at just 0.4% more energy capacity loss in 500 cycles.