Huawei presented at the 56th symposium on batteries in Japan new generation of lithium ion batteries. The novelty lies in the anode, which contains graphite, making increase the speed of recharging without affecting the energy density or the useful life. One of the problems of the fast recharge is the degradation of the chemical components.
there Were two videos. In one, was loaded in two minutes a battery of 600 mAh capacity by 68%, and a 3,000-mAh fell to 48 per cent in just five minutes. Thinking big, is a breakthrough that can benefit from electric cars, but not in the day-to-day.
Although let’s increase the reload speed, there is still the bottle neck of how much energy is received. In a household outlet 16 amps the recharge rate does not vary in any regard. the difference is in The fast reload, is not within the reach of the average pocket.
In the automotive industry is more interesting the density of load (capacity vs size/weight) that the recharge rate is limited by the chargers
To about 40 kW of power, it can recharge 80% of an electric car common in a half hour. The Tesla can use supercargadores with triple the power, but not the other models on the market. In theory, the battery of Huawei may work with those charge rates so high.
Now, it is not so easy, and they are chargers not only costly, but require an electrical infrastructure that supports all that power. Do not expect to see them at any gas station, much less that they are everywhere and free. Yes, in the long term, the use of the graphite will reduce concerns about the useful life of the batteries.
According to Huawei, these batteries will represent a revolution, but more in the sense of the portable electronic consumption in the road. Today, the batteries are not the limiting the time of recharge, but the infrastructure, I explained in a previous article:
Making a simile, it is as if the gasoline tanks of cars flows may be filled to the same speed that was filled up in the Formula 1 makes a few seasons. A full tank in a matter of seconds. If they are not the suppliers faster, it does not mean something that is very useful.
electric cars will always have an energy density worse than the fed to base of oil or gas. Every kWh you need more space and more weight. Face-to-long trips, that has to be offset by a recharge more quickly, but that means investing in expensive infrastructure, and where it is technically possible to do so.
recharging time and autonomy are two factors that are very decisive to opt or not for an electric car. The engineers of the manufacturers working around the clock to resolve them. For the moment, the technology of hydrogen fuel cell is most interesting for medium and long distance, still allowing a recharge more quickly, and the autonomy is greater, the problem is the price.