Innovation

Students design battery that charges in less than four minutes

Het team van InMotion laadt zijn racewagen met revolutionaire batterij op.

BYD did it for them, but now students from TU Eindhoven have also developed a car battery that charges in less than four minutes. More than that, theirs breaks the world record. Thus, charging becomes almost the same as refuelling.

TU Eindhoven’s InMotion student team works on an electric racing car every year. Each time, a new group of students takes up the challenge to further develop their car. The latest generation of budding engineers now focused on its battery and developed a next-generation battery pack (NGBP) for their race car Revolution. However, the solution could just as easily be built into any electric car.

With a charging time of 3 minutes and 56 seconds, the students also set a world record. In doing so, they trumped all car brands and charging station companies in the world. To achieve this milestone, they rethought the battery, and invented a new way of cooling it. Instead of cooling at the battery module level, they cool at the level of individual battery cells.

Lower threshold

To do this, they integrated cooling between the battery cells so that the heat generated during charging disappears faster. To do so, they developed a way to flow the coolant into the millimetres of space between the battery cells. Testing showed not only that the approach worked, but also that battery ageing – a side effect of charging and the heat generated in the process – was minimal.

The students now want to further test and validate their invention, but are confident that in the future, cars with their battery packs will be able to charge smoothly at the average highway charging station. In this way, they want to lower a barrier to electric driving, the charging time.

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This article was automatically translated from the Dutch language original to English (British).

Author: Matthieu Van Steenkiste

Source: MobilityEnergy.com

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