Basic chemistry

What is the best battery for an electric car?

Electric car batteries?

 

Electric car battery manufacturers:

Electric car battery manufacturers are listed here below.Samsung SDI has just unveiled a prototype electric car battery compatible with the fast charging system similar to that of smartphones.

Result, in 20 minutes of charging, the battery has 500 kilometers of range.

There are mainly two solutions for dealing with the problem of the range of  electric cars  :

Increasing the number of batteries or reducing the charging time in order to allow the driver to make a long trip without having to stop for a long time.

The first solution is the simplest but the less obvious because it puts a strain on the weight of the vehicle and imposes additional constraints in terms of design.

 The second option is being explored by major battery suppliers and   electric car manufacturers.

Among them is Samsung SDI, the subsidiary of the Korean giant which manufactures lithium-ion batteries and supplies BMW in particular.

Taking advantage of its presence at the North American International Auto Show held in Detroit (United States) earlier this week.

Samsung SDI unveiled a new generation of battery that will be able to offer the equivalent of 600 kilometers of range.

But above all, it will only take 20 minutes of charging to recover 80% of the capacity of the accumulator, or 500 kilometers.

Mass production of Samsung batteries to start in 2021

“This means that just 20 minutes on a highway rest area will be enough to charge the battery.

Eliminating the fear of electric vehicle drivers related to range,” says  Samsung  in its press release.

Fast chargers:

Currently, the fast chargers made available by Tesla are able to restore the equivalent of 273 kilometers of range in 30 minutes.

New Samsung battery:

The new Samsung battery could therefore almost double this figure. But its industrial production will not begin until 2021.

In addition, Samsung also presented a new cylindrical lithium-ion cell format called “2170” because it measures 21 mm in diameter and 70 mm long.

It offers the advantage of being able to accommodate 24 cells in a standard battery module against 12 currently.

This makes it possible to go from 2-3 kWh to 6-8 kWh on a module of the same dimensions.

It should be noted that Tesla, associated with Panasonic, has also adopted this 2170 format.

And started mass production in its giant Gigafactory, which has just entered service.

These batteries will be used for the new  Tesla Model 3,  which is scheduled for release in the second quarter of 2017.

TO KNOW MORE

Batteries capable of recharging your electric car in a quarter of an hour:

Electric car
Electric car batteries

The electric car seems to be gaining more and more followers. However, the question of autonomy is still an obstacle to the deployment of this type of vehicle. 

Thanks to a project led by researchers at the Federal Institute of Technology in Lausanne, Switzerland.

It may soon be possible to fill up with electricity as quickly as filling up with gasoline.

In France, registrations of electric passenger cars increased by some 62% between 2014 and 2015.

According to figures from the Association for the Future of the Electro-mobile Vehicle.

To further amplify the rise of the electric car , it will have to gain in autonomy.

All over the world, engineers and researchers are working to improve battery performance.

Those of the Federal Polytechnic School of Lausanne (EPFL), in Switzerland, chose to focus on another aspect of the problem: that of the battery charging time.

They thus offer, thanks to a so-called intermediate storage system, to charge the battery of an electric vehicle in just 15 minutes.

Batteries have undoubtedly already made significant progress in storage. A few months ago, Elon Musk, CEO of Tesla Motors.

A major manufacturer of electric cars, estimated that by 2020, the range of his vehicles could exceed 1,000 kilometers.

If such a promise could convince a good number of potential users to take the plunge, it is the electricity network which could not resist.

How will it support the simultaneous load of thousands of vehicles? This is the question that EPFL researchers asked themselves.

According to them, one of the main difficulties with electric cars is the charging time.

To get an idea of ​​the magnitude of the problem, imagine that it takes about 1.5 minutes to fill the tank of a diesel car.

A full tank which then makes it possible to drive 1,000 kilometers.

 In 1 minute 30 minutes, charging the battery of an electric car would not give it more than 6 kilometers of autonomy!

To charge faster, it’s simple – on paper at least – you have to increase the input power, at the risk of bringing down the electrical network .

Researchers at Federal polytechnic:

Intermediate storage for super-fast charging

EPFL researchers have invented an intermediate storage system. Enough to decouple the charging stations from the network while guaranteeing unparalleled speed of execution.

Concretely, this electricity storage consists of a lithium-iron battery the size of a sea container.

This battery is supplied continuously and at low power on the network.

 When an electric car arrives, it is this buffer battery that provides, on the spot and without having to call on the network, the power essential for an ultra-fast charge.

The demonstrator , built by the EPFL team and its partners, takes the form of a trailer carrying the buffer battery.

This is charged on the low voltage network and is able to supply, within a quarter of an hour,

The 20 to 30 kWh required to charge a standard electric car battery.

According to the team coordinator, there is still a good room for improvement.

With the rise of the electric vehicle, all our habits are likely to be upset. In the past, pump attendants assessed the size of their tanks based on various data.

In the future, they may need to estimate the size of their buffer storage based on traffic statistics,

Estimated number of electric vehicles, battery charging capacity, etc.

The simulations carried out by EPFL researchers thus show that a station which would ensure the rapid recharging of 200 vehicles per day would need an intermediate storage capacity of 2.2 MWh.

 It is the same order of magnitude as the energy consumed by a household … in one year! However, in volume, this corresponds “only” to some four sea containers.

Read more:

Electric vehicle battery?

Also read it:

What does a hybrid car means and how it works?

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