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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