06/07/2025
Huawei has filed a new patent that hints at big ambitions in the electric vehicle space—even though the company doesn’t make EVs itself. According to the patent, Huawei’s proposed sulfide-based solid-state battery could theoretically power an EV for up to 1,864 miles on a single charge and jump from 10% to 80% charge in under five minutes. That’s far beyond what today’s EV batteries can manage.
At the heart of the innovation is a process involving nitrogen-doped sulfide electrolytes, designed to reduce side reactions at the lithium interface—an ongoing challenge in solid-state battery design. Huawei’s battery is estimated to offer energy densities of 180–225 Wh/lb, which is significantly higher than current lithium-ion batteries.
The patent adds Huawei to a growing list of tech and auto giants—like BMW, Toyota, and CATL—pushing to bring solid-state batteries to market. These batteries promise to be lighter, safer, and faster-charging, but experts caution that most claims, including Huawei’s, are still theoretical for now.
While Huawei doesn’t make cars, it partners with automakers to supply smart systems and could play a bigger role in future EV architectures. As China leads in global EV battery patents, Huawei’s move adds another layer to the high-stakes race to reshape electric mobility.
