Voiture électrique en pleine charge

Quantum physics could revolutionize electric car technology

Humanity today faces the limit of fossil fuels. Research has been carried out to develop sources energy alternatives whose main energy vector is electricity. The world is gradually adopting new products that work with energies renewableone of the most striking being that of electric vehicles.

If traditional cars draw their energy from hydrocarbon combustionelectric vehicles store their energy in batteries. Since the energy density of batteries is lower than that of hydrocarbons, the first electric vehicles had a very low autonomy. However, battery electric technology has gradually improved, giving electric vehicles an acceptable range over gasoline-powered cars.

However, the slowness battery charging remains a problem. Currently, it takes about 10 a.m. to cars for a full charge at home and 20-40 min with the fastest station chargers.

How to solve this loading speed problem?

Scientists think they will find the solution in the field of physical quantum. According to their research, quantum technologies could offer new mechanics allowing to recharge the batteries faster. This could be done by simultaneously charging all battery cells collectively.

This idea is only possible with the batteries modern containing many cells. This advantage of collective load compared to the parallel load (conventional battery) is measured by a ratio called “quantum charge advantage”. This quantum advantage can have two sources: the “global operation” (where all the cells communicate simultaneously) and the “all-to-all coupling” (where each cell can talk with all the others independently). However, it is not known if these two sources are necessary or if there is a limit to the loading speed.

What are the answers to these last questions?

According to IBS scientists, the run-of-the-mill coupling is not not relevant in quantum stacks. The presence of joint operations is the secret ingredient of thequantum advantage. The group was able to identify the exact source of this benefit while ruling out any other possibility. He provided a explicit way to design these batteries.

The group was able to precisely quantify the charging speed can be achieved in this scheme. According to this study, quantum batteries using global operation can reach a ladder quadratic charging speed. the Loading time at home would therefore pass from 10 hours to about 3 minutes and at fast charging stations 30 minutes to seconds.

Quantum charging could be used far beyond consumer electronics. These technologies are only in research phase and cannot yet be used in everyday human life. However, the search results were very promising and can incentivize funding agencies and companies to invest in these technologies. These quantum batteries could thus revolutionize the way energy is used.


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