Electric batteries vs fast reload: the bottleneck of electric cars


The last prototype electric Volkswagen to more than 100 kWh of electrical capacity

we Started to take the idea that the electric cars will have a growing role in our lives according to progress in the regulations, anti-pollution, the technique and the changes in urban policies. The models of internal combustion will be removed from the circulation of historical centres, then of the rounds, finally in the peripheries.

Many batteries = too much weight, and that is inconvenient

The future will be electric, primarily on the basis of electricity pure and simple (electric or plug-in hybrids) and by hydrogen (fuel cells). Other technologies will have a role, too, depending on how you change the rules of the game, especially the gas (LPG/CNG) or conventional hybrids do not plug-in.

manufacturers are beginning to offer the same models general practitioners who exceed the barrier of 300 miles real range, it figures that as you begin to think on long trips. There are already models that go beyond the 500 miles, and this is being done to the base to increase the capacity of the batteries each time more.


Opel Ampera-e, with a capacity of 60 kWh and 500 kilometers in the combined cycle european (NEDC)

For example, the prototype I. D. BUZZ Concept presented by Volkswagen at the Detroit motor show announces a battery capacity of 111 kWh, which is almost quadruple capacity of the first version of the Nissan Leaf or the Renault ZOE. Increased capacity means increased recharge time, unless you recharge with a lot of power.

The manufacturer says can be charged to 80% in just half an hour, yes, with a loader 150 kW of power. That number means nothing until we establish this relationship: the contracted power of three single-family villas. No one is going to have such a device in your private garage unless you’re rich, and from then we cannot forget that there are chargers that are just as quick in every corner. In addition, the fast charging reduces the life span of the batteries.

supercargadores of Tesla work to 120 kW

More locations feasible for those supercargadores will be gas stations, some restaurants, rest areas… Their installation is expensive, their exploitation also, which leads us to another section, the cost of the recharge. Today, literally, the recharge is given away at many points. The cost assumes an electric company, an administration, a sponsor… but not the client.

And a good day, the customer will have to pay for the electricity that you need. In a first phase, the “give away” to encourage the pioneers to take the leap.


The Tesla Model S P100D approvals 613 kilometers at cycle european, thanks to its 100 kWh capacity

¿You will be able to travel with electric cars in the future? of course, but we have to consider that a “chute” of 150 kW will not come out precisely free, but should cost, even in the worst of cases, less than a tank of gasoline or diesel. Tesla will start to charge some day for their supercargadores, now free for owners of the more expensive models, Model S and Model X.

have been ruled out by its low practicality the massive use of exchangers battery or trailers with a generator to increase the autonomy of these vehicles or to reduce instantly the time of recharge. Hence the vehicle fuel cell stack, gas or conventional oil will always have the stop more quickly. We will have to re-accustom to make stops, not “pit-stop” for civilians.

An electrical domestic 16-amp charging almost 3.6 kW each hour. Cast accounts…

The domestic facilities are not designed for fast charging for multiple reasons: single-phase current, inadequate wiring for high-power, etc Other reasons may scare away the customers, such as high costs of installation or maintenance, the possibility of being taxed with a tax, increase high the electric bill by higher contracted power…

Except huge revolution, recharge domestic will always be slow.


Accessory to recharge the Mitsubishi Outlander PHEV, a plug-in hybrid

let’s Not forget that as is mounted the system, the electricity is paid according to consumption (variable), and the availability (fixed). In this last section include costs not energy, as the disposal of radioactive waste from nuclear power plants, toll roads, coal extraction, compensation for the central basque that are not finished, etc, To be able to recharge quickly is to increase the contracted power: 40 kW would come out to about 140 euros per month to charge the car once, 100 times, or none.

The formula of having a combustion engine on board to stretch the autonomy is not the most suitable for the public at large. Both the electric extended-range such as plug-in hybrids exceed the 30,000 euros, and will be so for a good time, even though the battery manufacturing begins in earnest. Only Tesla thinks doubling the world production of batteries for automotive, and that doesn’t fall in the prices, but the democratizará a little.

The batteries grow in capacity, yes, but the speed of recharge is not. The system is not prepared for millions of vehicles to refill with high potency, although you can already do with millions of charging to the time of night. The range anxiety will be less, no doubt, but we have to forget the “comfort” of the current system: stop, fill in a couple of minutes, to pay and to continue traveling. Not be so. Who wants that, you have to switch to hydrogen, a technology that is too far away, yet be accessible to the average citizen.