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Soon cylindrical battery cells at BMW


The BMW i Vision Circular announcing the Neue Klasse. BMW

NEWS – The Neue Klasse scheduled for 2025 will inaugurate a new generation of more efficient battery cells.

It looks like a small revolution. Proof of the exceptional capacity for innovation of automobile manufacturers. In 2025, the launch of the BMW Neue Klasse, an electric compact drastically reducing the carbon footprint across the entire value chain, will be accompanied by the introduction of a sixth generation of batteries. Its characteristic? The lithium-ion cells take on a cylindrical shape to adapt in particular to the new platform. If the diameter of 46 mm is standard, the engineers of the German manufacturer have developed two different heights, depending on the needs.

BMW

Compared to the prismatic cells of the fifth generation, BMW has revised the chemical composition of the new accumulators. The nickel content of cylindrical cells is higher on the cathode side, while the cobalt content is reduced. Furthermore, the silicon content increases on the anode side. Result: the energy density of the cell improves by 20%. Another gain: the new technology will make it possible to reduce the cost of high-voltage batteries and therefore to lower the price of electric vehicles, one of the main obstacles to the development of electromobility.

In addition, the battery will operate at a voltage of 800 volts, which will ensure a reduction in recharging times of around 30% from 10 to 80%. This is not nothing: BMW has planned at the same time to increase the autonomy of its vehicles by 30% with the new battery technology.

To secure its long-term needs, the German manufacturer has already planned to build six battery production plants, each with an annual capacity of up to 20 GWh. Production sites will be split evenly between China, Europe and the United States. Cylindrical cells are only the first step on the road to innovation. At the same time, BMW is continuing to develop all-solid-state batteries. According to a spokesperson, this technology could see the light of day in series at the end of this decade.

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