Short-circuit or internal damage occurs may lead to a variety of the latest generation of lithium-ion batteries overheating phenomenon, prevalent in the electronics of this issue of the electric car could be disastrous.
It seems that the summer of 2009 is considered a milestone in the green car.
In July, located in Tokyo, Japan, Mitsubishi Motors has announced its new total of U.S. $ 48,000 electric micro-car i-MiEV to go on sale this month, an official with the market already Fuji Heavy Industries, Nissan, and BYD Electric’s automotive products to the competition.
However, even if car manufacturers are competing in the region before they show more edge and achieve a hobby, pleasant attitude of the electric car, but some technical experts are always a variety of concerns.
Before that, they pay more attention to battery life, and the mileage life recently, technical experts have also reported a series of short-circuits or internal damage occurs may lead to the latest generation of lithium - Ion batteries overheating phenomenon.
In mobile phones, laptops and other electronic products used in the battery, each battery 500-10000000 be a case of a similar situation - which means that the risk of fire.
Laptop battery is usually composed of six batteries, battery pack electric vehicle, the ability to more - probably at least 75 or 80 batteries, which is the subtext underlying - that the speed on the highway electric car , each of 60000, perhaps we will have at least one problem.
“Even if it is a low probability event, but the event, the consequences would be catastrophic.” Accelerating the amount of U.S. manufacturer well-known expert of the battery thermal equipment Tiax Brian Barnett (BrianBarnett) warned.
The problem is that the fire caused by the battery, their severity will be compared with conventional fuels at a greater risk of a burning car do?
“A big danger is that if a battery troubles, this problem will be” President transmitted to the battery and other batteries, “the United States AAB (AdvancedAutomotiveBatteries) Meinahaimu Anderman (MenahemAnderman) the concern that because the battery technology is still in its infancy, it is difficult to quantify the risk is not negligible.
Even if the battery problems will not be like a normal car on fire the fire spread so quickly, but it will be a little bit of land erosion, a key component of the organization until that He wants to see accidents.
The experts noted that such shortcomings do not appear immediately in the battery. But the thousands of electric cars are likely to encounter in a road accident in movement of the battery, even if the occupant was not injured, vehicle manufacturers have also received a great blow.
In 2006, because of problems with Sony VAIO notebook battery recall, a loss of 258 million euros. In electric vehicles, the battery costs represent 50% of the total cost, if there are problems, the loss is more painful than notebook computers.
Of course, automakers are prepared to insist that their cars are safe.
Nissan said they coat the battery uses a special material, low thermal conductivity of these materials, you can minimize the risk of overheating batteries. The leading Chinese battery technology experts has insisted that its battery iron BYD is perfectly safe.
Mitsubishi i-MiEV battery is not easy bending deformation of the rigid frame to protect them, then added a layer of impact outside the cage of the chip to control the load and continue to monitor each and condition battery.
Mitsubishi Motors President, Nishioka Bridge (OsamuMasuko) believes that these measures have greatly reduced the risks involved by the battery. In his last two years has been using a red and white i-MiEV, a full-time driver to drive for him, it seems that there has not been a big problem.
To ensure safety, the Japanese automakers to conduct tests on the active stack. For example, Nissan and Mitsubishi engineers and, in extreme hot and cold, keep the battery charge and discharge, and simulate a variety of conditions of cell damage.
However, technical experts believe that these measures can not guarantee the elimination of lost potential dangers.
“Unless you put the battery installed in the car and someone opened a few years,” the study of batteries Tokyo market analyst firm Fuji SeijiEzaki economic groups, said: “If you do not l ‘review current practice, you do not really know how to use the battery as well as in the real battery status appears to use a kind of situation. “