the BMW i7 : an electric car revealing revolutionary technology approaching

The electric revolution is at our doorstep, and the BMW i7, the flagship of the Bavarian brand, is at the forefront of revealing technological advancements worthy of science fiction. With the promise of explosive performance and new energy solutions, this sedan redefines expectations for luxury cars.

Innovative technology: solid-state batteries

Recently, road tests took place in Germany, featuring prototypes of the BMW i7 equipped with solid-state batteries. These batteries, known as ASSB (All Solid-State Batteries), are seen as the next major step in the evolution of electric vehicles. By replacing the liquid electrolyte with a solid electrolyte, this technology could revolutionize the way energy is stored.

The advantages of solid-state batteries

The new solid-state batteries bring substantial promises:

• 🔋 Increased energy density: 20 to 50% higher compared to traditional lithium-ion batteries.
• ⏱️ Reduced charging time: improvement due to optimal conductivity.
• 🛡️ Enhanced safety: absence of flammable liquid electrolyte.
• ♻️ Extended lifespan: less degradation over time.

The BMW i7 prototype: real-world testing

The BMW i7 designed for these initial experiments is not completely new, but integrates cells developed by Solid Power into an existing architecture. This allows for effective testing of the advantages of solid-state batteries without rebuilding the entire system.

Objectives of the tests

BMW engineers are focusing on several crucial aspects during these tests:

• 🌡️ Thermal stability of the cells during charging and discharging.
• ⚡ Electrical behavior under various climates.
• 🏎️ Response to power demands in real-world conditions.
• 🔧 Durability of interfaces between electrolytes and electrodes.

A strategic partnership for the future

The collaboration with Solid Power, which began in 2016, has paved the way for significant progress. This partnership allows BMW not to rely solely on one technology while investing in the internal development of key skills. Currently, BMW collaborates with over 300 partners in the battery field, contributing to its electrification and innovation strategy.

Challenges to overcome

Despite these promising advancements, several technical challenges remain:

• ⚠️ Conductivity lower at room temperature.
• 🔍 Resistance issues to volumetric changes.
• 🏭 Mass production needs to be rethought for solid-state batteries.

Towards successful commercialization

The commercialization of these solid-state batteries is expected to be gradual, with the first models anticipated by 2027-2028. BMW's goal is to develop models that can absorb the initial cost and allow later deployment in more accessible segments.

In this quest for innovation, it will be exciting to see how the BMW i7 positions itself compared to other automotive giants like Tesla, Audi, and Mercedes-Benz. The battle to dominate the electric car market is intensifying, and the BMW i7 could change the game, with promises of a future that seems indeed very electrifying!

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