Towards new cheaper batteries offering 400 km of range for 10 minutes of charging






While the range does not change, the charging method has been completely revised by a team of American researchers from Pennsylvania State University. According to their research, it is possible to recharge a 40 kWh LFP battery in just 10 minutes.

The researchers have in fact developed a process to heat up the battery quickly so that it can be recharged, and to cool it just as quickly when it is no longer in use.


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Really fast charging, finally?

While the range of the latest generation electric cars is no longer really a major obstacle to purchasing, with current models able to cover 300 to 400 km on a single charge, the daily charge is still a considerable obstacle.

Between a network of charging stations that is still too disparate, compared to the number of service stations distributing fossil fuels, and a charging time that is too long for some, depending on the on-board technology, the question of recharging puts off potential buyers to spend the time. no electric. It could change quickly.

A team of American researchers has in fact designed an LFP (Lithium Iron Phosphate) type battery capable of rapidly rising to 60 ° C in order to be optimally charged, before falling in temperature just as quickly once the charge is complete. This advance would then save precious time during recharging, a process hitherto heavily impacted by the preheating of the battery which cannot be charged cold.



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A reliable battery at a lower cost?

According to the two researchers, this new process would limit the irregular deposition of lithium on the anode of the battery, which can cause failures. This twofold advance would also make it possible to make LFP-type batteries more reliable. Their longevity, already significant, could thus reach nearly 3 million kilometers.

Moreover, this prototype also for him not to involve expensive or rare technology or resources, on the contrary. One of the two researchers involved, Chao-Yang Wang, explains:


 “This battery has reduced weight, volume and cost. I am very happy that we have finally found a battery that can benefit the general public… This is how we are going to change the environment and without contributing only to luxury cars ”.


Source : The Engineer

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