Geely's new battery for electric vehicles is expected to last a million kilometers and offer better fire protection

The company Geely has introduced a new lithium iron phosphate battery for electric vehicles that it claims will be able to drive 1 million kilometers and that it will last as long as 50 years. In addition, it charges faster, performs better in cold environments and withstands serious loads.

The new battery has an improved membrane that improves energy density and safety. It uses multi-element doped electrodes, which significantly reduce the rate of internal chemical reactions, which the company claims is one of the main reasons this new type of battery can offer a longer lifespan.

The Chinese automaker claims it can charge the battery 3500 times, which corresponds to 1 million kilometers of driving, and it has all this “minimal impact on battery range". The extended lifespan will not only help increase the residual value of used electric vehicles, but also reduce carbon emissions by more than 80.000 tons per year, according to Geely. A cell has a capacity 192 Wh / kg and is about 40% shorter than a conventional paddle battery.

Tests conducted with short and long blade batteries of equal capacity have shown that the short blade battery charges faster. While the long blade battery charged from 10 to 80% in 26 minutes, the new short blade battery needed only 17 minutes and 4 seconds. Furthermore, at -30 °C, the performance of the long blade battery decreased to 78,96%, while the short blade battery maintained 90,54% of its capacity.

The company Geely is particularly proud of how the battery is safe. If the cell is punctured, a layer of aluminum foil automatically fuses with the battery membrane to create an insulating layer that prevents short circuits and heat loss. During testing, the battery was punctured with eight at the same time steel needles with a diameter of 5 mm and let it stand for an hour, but there were no ill effects. Geely also shot the battery with 5,8mm bullet and no thermal ignition occurred.

The testing did not end there. The new short blade battery has also been immersed in sea water, thrown into a fire, placed in a very cold environment, struck from the side, compressed with 26 tons and torn. Geely claims that the battery passed the test with flying colors thanks to all the safety features.

Geely has not announced when it will start making electric vehicles with these new batteries.

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