Charging EV batteries quickly and efficiently

RaQuEl research project begins

Turck duotec GmbH, Quantum Technologies UG and Elmos Semiconductor SE have partnered with the Münster University of Applied Sciences and Leipzig University to conduct joint research on a quantum-based sensor solution for efficient battery management in the field of e-mobility. The RaQuEl research project, which is backed by €4.4 million worth of funding from the German Federal Ministry of Education and Research (Bundesministerium für Bildung und Forschung, represented by VDI/VDE), is pursuing the development of innovative current sensors for electric vehicles, as well as for energy and medical technologies.

A new dimension of measuring

The results of the RaQuEl research project improve battery management in electric vehicles (image source: Adobe Stock)

Electromobility is experiencing a dynamic upswing. According to a 2020 study by Deloitte, more than one million e-cars will be cruising German roads in the year 2030. Precise battery management makes it easier for drivers to check the battery level and enables them to determine their exact range of travel. It also controls the charging process and ensures efficient engine control. This extends the service life of the energy storage unit. The measuring range required for this extends from ten thousandths of an ampere to over one thousand amperes.

The RaQueEl project is focused on researching a new, innovative current sensor that utilises quantum physical effects. This opens up a completely new dimension in measurement technology – especially in terms of accuracy and speed while also maintaining a high level of isolation. Even low electrical currents can be measured reliably and quickly and provide information about the battery’s charge level and its level of deterioration at all times. The simplicity of installation and the galvanic separation of the quantum sensor from the current-carrying components are also significant. They make it possible for measurements to be taken directly in the battery.

Small, reliable and durable

Up to now, battery management solutions have been complicated, expensive to set up and not universally applicable for all on-board voltages. The quantum sensor that Turck duotec and Quantum Technologies are developing together uses nitrogen point defects in diamonds (high-density NV diamonds) to detect magnetic fields or currents. It measures without the use of microwaves and has a very compact design. The technology’s quantum-mechanical properties mean it is largely independent of temperature and pressure and shows no signs of deterioration. Utilising quantum effects in the new battery sensor also allows it to be used in all electric vehicles with typical voltages of 12 to > 800 volts. The laboratory samples that have been produced will be tested further in example applications. The project is also examining whether the solution can be transferred to other sectors of industry as well.

You can find more information about the project here: Project RaQuEl [...]

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