Author: Marvin Garbade

Battery Fire Protection Tests

In preparation for the final construction of battery pack and housing, we ran first experiments concerning fire protection in the unlikely case of a thermal runaway . For this purpose, first tests focused on the GRP panels placed between each block of parallel connected cells (cf. test module) while the effect of additional fire protection […]

Battery Performance Tests

After completing the first fully-functional battery module in June 2019, we could finally run different test scenarios to evaluate our preliminary design. After some additional modifications of our test module and extensive preparations for a proper testbed integration and data logging, we were provided a 100 A battery pack tester along with a climate chamber […]

Emergency Profile Battery Test Results

While the intended fully-electric profile reaches a maximum current of 19.6 A (= 6.5C) on cell-level, peak current demands are more than doubled in case of a battery pack outage in the critical starting phase. Hence, cells are temporarily operated beyond their specified maximum discharge current of 30 A which has, however, not led to […]

REX Profile Battery Test Results

In the intended hybrid-electric flight operation, cruise power demand is solely covered by the range extender while the battery serves as take-off boost and load buffer. Therefore, this test run was designed to determine the maximum achievable height with REX-assisted climbing at 3.4 m/s climb rate. The 25 kW REX contribution led to a considerable […]

Reduced Electric Profile Battery Test Results

In this test run, a more efficient climb rate of 2.4 m/s (before 3.4 m/s) was simulated by respectively decreasing power demands. The climb phase cutoff criterion (temperature > 58°C) was reached after 10.3 min, resulting in an achievable height of 1488 m. The remaining energy was sufficient for another 6.5 min cruise flight under […]

Electric Profile Battery Test Results

The fully-electric profile could be accomplished without any problems. In accordance with previous simulations, the maximum module current remained closely below 100 A. Shortly after the end of the climb phase, the maximum temperature of 56.3°C was measured at the cell/PCM surface in mid and edge regions where there is least convection to the surrounding […]

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